阅读说明：本技术 组合十字形截面柱及其的制作方法 (Combined cross-shaped section column and manufacturing method thereof ) 是由 贾穗子 于 2020-03-31 设计创作，主要内容包括：本发明公开了一种组合十字形截面柱及其的制作方法,其中,组合十字形截面柱包括带U形翼钢管混凝土核心柱、长木单元和多个竹胶板,带U形翼钢管混凝土核心柱的四个U形翼T形钢板的腹板分别焊接固定在钢管混凝土核心柱的侧面上,带U形翼钢管混凝土核心柱限定出四个咬合安装区；四个长木单元的两侧端面上分别设有企口；四个长木单元分别一一对应适配地嵌设在四个咬合安装区中,且折边分别嵌入在对应的企口中,四个长木单元与带U形翼钢管混凝土核心柱之间的界面均采用第一结构胶粘结固定；多个竹胶板采用第二竹销钉和第二结构胶分别固定在组合柱的外侧面上。本发明能够有效地对小截面木材和竹资源进行回收利用,结构简单可靠且环保性高。(The invention discloses a combined cross-shaped section column and a manufacturing method thereof, wherein the combined cross-shaped section column comprises a concrete-filled steel tube core column with U-shaped wings, a long wood unit and a plurality of bamboo veneers, webs of four T-shaped steel plates with U-shaped wings of the concrete-filled steel tube core column with U-shaped wings are respectively welded and fixed on the side surfaces of the concrete-filled steel tube core column, and the concrete-filled steel tube core column with U-shaped wings defines four occlusion mounting areas; the end surfaces of two sides of the four long wood units are respectively provided with a tongue-and-groove; the four long wood units are respectively embedded in the four occlusion mounting areas in a one-to-one corresponding and adaptive manner, the folded edges are respectively embedded in the corresponding tongue-and-groove, and the interfaces between the four long wood units and the concrete-filled steel tube core column with the U-shaped wing are bonded and fixed by first structural adhesive; and the plurality of bamboo rubber plates are respectively fixed on the outer side surfaces of the combined columns by adopting second bamboo pins and second structural glue. The invention can effectively recycle small-section wood and bamboo resources, and has simple and reliable structure and high environmental protection.)

1. The utility model provides a combination cross section post, its characterized in that, combination cross section post is for taking U-shaped wing steel pipe concrete-little short wood-bamboo plywood combination cross post, includes:

the steel tube concrete core column with the U-shaped wings comprises a steel tube concrete core column and four U-shaped wing T-shaped steel plates, webs of the four U-shaped wing T-shaped steel plates are vertically arranged and are respectively welded and fixed on the side faces of the steel tube concrete core column, the cross section of the whole body formed by the four webs and the steel tube concrete core column is approximately cross-shaped, and folded edges on wing plates of the four U-shaped wing T-shaped steel plates are respectively opposite to the corresponding webs at intervals, so that the steel tube concrete core column with the U-shaped wings defines four occlusion installation areas;

four long wood units; the cross sections of the four long wood units are approximately L-shaped, and the end surfaces of two sides of the four long wood units are respectively provided with a tongue-and-groove; the four long wood units are formed by splicing a plurality of small short woods into long wood woods with rectangular cross sections by adopting first bamboo pins and latex, and then processing the long wood woods with the rectangular cross sections according to design requirements, wherein the latex is bonded on interfaces between every two adjacent small short woods; the four long wood units are respectively embedded in the four occlusion mounting areas in a one-to-one corresponding and adaptive manner, the folded edges of the four wing plates are respectively embedded in the corresponding grooves and tongues, and interfaces between the four long wood units and the U-shaped wing steel pipe concrete core column are bonded and fixed by first structural adhesive, so that the U-shaped wing steel pipe concrete-small short wood combined column with the cross-shaped section is formed;

The plurality of bamboo rubber plates are respectively fixed on the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column by adopting second bamboo pins and second structural adhesive so as to completely coat the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column, wherein the second structural adhesive is bonded on the interface between the bamboo rubber plates and the corresponding U-shaped wing steel pipe concrete-small short wood combined column.

2. The composite cross-shaped cross-section column according to claim 1, wherein the concrete-filled steel tube core column is formed by pouring fine aggregate concrete into a rectangular steel tube, a square steel tube or a round steel tube.

3. The composite cross-shaped cross-section column according to claim 2, wherein the wall thickness of the steel tube in the concrete-filled steel tube core column is not less than 2mm, the fine crushed concrete strength grade is not less than 20MPa, and the particle size of the coarse aggregate in the fine aggregate concrete is not more than 100 mm.

4. A composite cruciform cross-section column according to claim 1, wherein said wing is a cold-bent steel plate.

5. A composite cruciform cross-section post according to claim 4 wherein said flap has a thickness of not less than 2mm and said web has a thickness of not less than 2 mm.

6. The composite cross-section column of claim 1, wherein the compressive load bearing capacity of the concrete-filled steel tube core column with U-shaped wings is not less than 50% of the overall compressive load bearing capacity of the composite cross-section column.

7. The combination cross-shaped cross-section column as claimed in claim 1, wherein the small short wood is one whose section size meets the design section requirement but whose length does not meet the height requirement of the combination cross-shaped cross-section column, or one whose section size does not meet the design section requirement and whose length does not meet the height requirement of the combination cross-shaped cross-section column.

8. The combination cross-shaped cross-section column according to claim 1, wherein the thickness of the bamboo plywood is not less than 10mm, and a butt joint angle between every two adjacent bamboo plywood plates which are perpendicularly intersected is 45 degrees.

9. A method of making a composite cross-section post according to any one of claims 1 to 8, comprising the steps of:

manufacturing the concrete-filled steel tube core column with the U-shaped wings: designing and manufacturing the concrete-filled steel tube core column and the U-shaped wing T-shaped steel plates according to performance requirements, wherein the webs of the four U-shaped wing T-shaped steel plates are vertically arranged and are respectively welded and fixed on the side surfaces of the concrete-filled steel tube core column, so that the cross section of the whole body formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, and the concrete-filled steel tube core column with the U-shaped wings defines four occlusion installation areas;

Manufacturing the long wood unit: splicing a plurality of small short wood pieces into a plurality of long wood pieces with rectangular cross sections by adopting the first bamboo pins and the latex, wherein the latex is connected to the interface between every two adjacent small short wood pieces, and then processing the plurality of long wood pieces with rectangular cross sections into the long wood units according to the design requirement, so that one part of each long wood unit can be embedded in the corresponding occlusion installation area in a matching manner;

manufacturing the U-shaped wing steel pipe concrete-small short wood combined column: after the first structural adhesive is coated on the connection interfaces of the four long wood units and the concrete-filled steel tube core column with the U-shaped wing, parts of the four long wood units are respectively embedded in the four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wing in a one-to-one corresponding and adaptive mode, and therefore the concrete-filled steel tube-small short wood combined column with the cross-shaped section is formed;

connecting the bamboo plywood with the U-shaped wing steel pipe concrete-small short wood combined column: firstly, respectively sticking a plurality of bamboo plywood plates on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, after the bonding strength meets the requirement, punching holes for the second bamboo pins to be pinned into the bamboo plywood plates and the long wood units according to the design arrangement, then coating the second latex on the surfaces of the second bamboo pins and then pinning into the holes, thereby forming the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined cross-shaped column.

10. The method for manufacturing a combined cross-section column according to claim 9, further comprising the steps of:

surface treatment: and (3) carrying out surface polishing and smoothing treatment on the exposed part of the bamboo plywood on the combined cross-shaped column of the concrete filled steel tube with the U-shaped wing, the small short wood and the bamboo plywood.

Technical Field

The invention relates to the technical field of building combined structures, in particular to a combined cross-shaped section column and a manufacturing method thereof.

Background

In villages and small towns building structures, timber framed structures have comparatively extensive application, and the timber pillar is timber framed structure's vertical component. In the wooden frame structure, the wooden columns and the wooden beams form the wooden frame through connecting nodes, and loads borne by the wooden beams are transmitted to the wooden columns through the nodes and then transmitted to the foundation through the wooden columns.

Conventional timber columns are usually made of whole logs with circular and rectangular cross sections, and the resources of whole logs with large cross sections are very scarce due to excessive forest harvesting. On the other hand, there are many stocks of waste small-section logs sawed manually in forests and residual small-section woods in wood processing plants, and because the small-section logs and the residual small-section woods are not only small in section and short in length, but also lack of corresponding recycling technology, the small-section logs and the residual small-section woods can only be treated as waste products, so that resources are wasted, and the environment is polluted. How to recycle waste small-section logs sawed off manually in forests and residual small-section woods in a wood processing plant is a key technical problem which is very concerned about and urgently needed to be solved in the engineering field.

After the small-section wood is processed into the rectangular-section wood, the long small-section rectangular wood is difficult to process, the actually processed small-section rectangular wood is different in length, how to reasonably and efficiently utilize the short wood with the different lengths is also very concerned in the engineering field.

Bamboo has strong growth ability and belongs to an ecological building material. Bamboo resources in China are abundant, bamboo types and bamboo forest areas account for 1/4 of the world, bamboo yield accounts for 1/3 of the world, and the bamboo wood occupies the top of all countries in the world. The bamboo has excellent physical and mechanical properties, the tensile strength of the bamboo is about 2 times of that of wood, and the bamboo has good elasticity and flexibility. However, the mechanical properties of the bamboo are closely related and greatly different with the water content, the bamboo stalk position, the bamboo age, the standing conditions, the bamboo species and the like, so that the wide application of the bamboo in the building is limited. The bamboo wood-based panel produced by using bamboo as a main raw material greatly changes the form and structure of the bamboo due to the structural reasonability, and improves the stability of the physical and mechanical properties of the bamboo. The bamboo plywood processed by bamboo is already applied to a large scale as a building template, the corrosion resistance, the water resistance, the fire resistance, the compression resistance, the tensile resistance, the bending resistance and the like of the bamboo plywood are all obviously better than those of a wood template, the turnover frequency is obviously more than that of the wood template, and the working stability and the safety are good.

At present, the surplus of steel productivity in China is a problem to be solved urgently in the industry how to reasonably adopt light steel in a large-scale village and town building structure.

The concrete filled steel tubular column has good compression resistance, and the concrete in the steel tube is restrained by the steel tube and is in a three-dimensional compression stress state. The compression resistance of the hollow steel pipe column is obviously higher than that of a hollow steel pipe column, and how to combine a light steel pipe concrete column, resources, abundant small short wood and bamboo plywood into a column member with good compression resistance is urgent need of engineering.

At present, latex is mainly used for bonding wood and wood or bonding wood and a bamboo plywood, the color of the latex is white, the latex is also called white latex, the latex is short for polyvinyl acetate adhesive and comprises single-component latex and double-component latex, and the modified latex has the advantages of firm bonding, good water resistance and good weather resistance. At present, structural adhesive is mainly used for bonding wood and steel or bonding bamboo plywood and steel, has high strength, peeling resistance and impact resistance, can bear larger load, is aging-resistant, fatigue-resistant and corrosion-resistant, has simple and convenient construction process, has stable performance within the expected service life of the structure, is suitable for bonding structural members, and can be used for bonding the same materials such as metal, wood and the like or bonding different materials. The price of the structural adhesive is higher than that of the latex.

Therefore, the research and development of the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined rectangular column which is economical, practical, low in manufacturing cost and simple and convenient to construct and is suitable for low-rise buildings, particularly low-rise rural houses in villages and towns, and the construction method have very important practical significance and social, economic and environmental values.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a combined cross-section column, which can effectively recycle small-section wood and bamboo resources, and has the advantages of simple and reliable structure, wide application range and high environmental protection.

According to the embodiment of the first aspect of the present invention, the combined cross-shaped cross-section column is a combined cross-shaped column with U-shaped wing, steel pipe concrete-small short wood-bamboo plywood, and includes:

the steel tube concrete core column with the U-shaped wings comprises a steel tube concrete core column and four U-shaped wing T-shaped steel plates, webs of the four U-shaped wing T-shaped steel plates are vertically arranged and are respectively welded and fixed on the side faces of the steel tube concrete core column, the cross section of the whole body formed by the four webs and the steel tube concrete core column is approximately cross-shaped, and folded edges on wing plates of the four U-shaped wing T-shaped steel plates are respectively opposite to the corresponding webs at intervals, so that the steel tube concrete core column with the U-shaped wings defines four occlusion installation areas;

four long wood units; the cross sections of the four long wood units are approximately L-shaped, and the end surfaces of two sides of the four long wood units are respectively provided with a tongue-and-groove; the four long wood units are formed by splicing a plurality of small short woods into long wood woods with rectangular cross sections by adopting first bamboo pins and latex, and then processing the long wood woods with the rectangular cross sections according to design requirements, wherein the latex is bonded on interfaces between every two adjacent small short woods; the four long wood units are respectively embedded in the four occlusion mounting areas in a one-to-one corresponding and adaptive manner, the folded edges of the four wing plates are respectively embedded in the corresponding grooves and tongues, and interfaces between the four long wood units and the U-shaped wing steel pipe concrete core column are bonded and fixed by first structural adhesive, so that the U-shaped wing steel pipe concrete-small short wood combined column with the cross-shaped section is formed;

The plurality of bamboo rubber plates are respectively fixed on the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column by adopting second bamboo pins and second structural adhesive so as to completely coat the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column, wherein the second structural adhesive is bonded on the interface between the bamboo rubber plates and the corresponding U-shaped wing steel pipe concrete-small short wood combined column.

According to the combined cross-shaped section column disclosed by the embodiment of the first aspect of the invention, the manufacturing process comprises the following steps: firstly, manufacturing a concrete-filled steel tube core column with U-shaped wings, designing and manufacturing the concrete-filled steel tube core column and the U-shaped wing T-shaped steel plates according to performance requirements, and vertically arranging webs of the four U-shaped wing T-shaped steel plates and respectively welding and fixing the webs on the side surfaces of the concrete-filled steel tube core column, so that the cross section of the whole body formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, and the concrete-filled steel tube core column with the U-shaped wings defines four occlusion installation areas; then, four long wood units are manufactured, every two adjacent small short wood units are spliced and fixed into long wood with a rectangular section through a first bamboo pin, the connecting interface between every two adjacent small short wood units is bonded and fixed by latex, then a plurality of long wood materials with rectangular cross sections are taken and processed into four long wood units according to the design requirements, secondly, manufacturing a U-shaped wing steel pipe concrete-small short wood combined column, painting first structural adhesive on the connecting interface of the four long wood units and the U-shaped wing steel pipe concrete core column, the four long wood units are respectively pushed in from one end of four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wings, so that parts of the four long wood units are respectively embedded in the four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wings in a one-to-one corresponding and adaptive manner, the small short wood is spliced in a staggered manner to form a U-shaped wing concrete filled steel tube-small short wood combined column with a cross-shaped section; and finally, connecting the bamboo plywood with the U-shaped wing steel pipe concrete-small short wood combined column, respectively sticking a plurality of bamboo plywood on the outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat the whole outer side surface of the U-shaped wing steel pipe concrete-small short wood combined column, punching holes for pinning the second bamboo pins into the bamboo plywood and the long wood unit according to the design arrangement after the bonding strength meets the requirement, and then, coating the second latex on the surface of the second bamboo pin and pinning the holes to form a double connection interface of mechanical connection of a matching interface between the long wood unit and the bamboo plywood and complementary bonding of the interface.

The combined cross-section column according to the embodiment of the first aspect of the invention has the following advantages: the method comprises the following steps that firstly, a concrete-filled steel tube core column with U-shaped wings can be automatically adjusted and designed based on the stress requirement of a combined column, and the concrete-filled steel tube core column with the U-shaped wings and good compression resistance is adopted at the core pressed part; the outer side surface of the concrete-filled steel tube core column with larger bending stress adopts a U-shaped wing T-shaped steel plate, has the functions of resisting compression and strengthening the connection between long wood units, and has the advantages of flexible design, reasonable stress and steel saving; secondly, the long wood units formed by the small short wood which are spliced in a staggered mode based on the stress requirement of the combined column are connected in a double mode through cylindrical bamboo pins and glue, the long wood units of the high-performance connecting interface which is formed by mechanical engagement between the small-section short wood and full-interface glue in a coordinated stress mode are close to the performance of the whole wood, the tensile property and the shearing resistance of the bamboo pins are remarkably better than those of wooden pins, the defect that steel screws are prone to corrosion is overcome, and the long wood units have enough strength and rigidity required by wood connection; thirdly, the outer side surface with the maximum bending resistance and the maximum shearing resistance of the combined cross-shaped section column is covered by a bamboo plywood sealing cover with the tensile strength and the compressive strength 2 times of that of wood, so that the bending rigidity, the bending resistance bearing capacity and the shearing resistance bearing capacity of the combined column are obviously improved, and the rigidity, the strength and the stability of the combined column are obviously improved compared with those of a traditional log column with the same wood and the same section; fourthly, the small-section short wood, the bamboo plywood and the steel pipe concrete core column with the U-shaped wings are organically combined, the structure is simple, the connection is reliable, the ecological environment is protected, and the recycling of forestry waste small-section logs and residual small-section wood processed in the wood industry and the comprehensive utilization of a large amount of ecological bamboo can be powerfully promoted; fifthly, the whole combined cross-shaped section column does not have an exposed steel part, namely the steel part is completely wrapped by wood and bamboo, so that the durability of the combined column is obviously improved, the combined column is very suitable for a countryside building structure with large volume and wide range, and the appearance of the combined column has the ecological sense of a traditional wood-bamboo structural column.

According to an embodiment of the first aspect of the invention, the concrete-filled steel tube core column is machined by pouring fine aggregate concrete into a rectangular steel tube, a square steel tube or a round steel tube.

According to an embodiment of the first aspect of the present invention, the wall thickness of the steel tube in the concrete filled steel tube core column is not less than 2mm, the fine crushed concrete strength grade is not less than 20MPa, and the particle size of the coarse aggregate in the fine aggregate concrete is not more than 100 mm.

According to an embodiment of the first aspect of the invention, the strake is a cold-formed steel plate.

According to an embodiment of the first aspect of the invention, the wing plate has a thickness of not less than 2mm and the web has a thickness of not less than 2 mm.

According to an embodiment of the first aspect of the present invention, the compressive bearing capacity of the concrete filled steel tube core column with U-shaped wings is not less than 50% of the overall compressive bearing capacity of the combined cross-shaped section column.

According to one embodiment of the first aspect of the present invention, the small stump is a small stump whose section size satisfies the design section requirement but whose length does not satisfy the column height requirement of the combined cross-shaped section, or the small stump is a small stump whose section size does not satisfy the design section requirement and whose length does not satisfy the column height requirement of the combined cross-shaped section.

According to one embodiment of the first aspect of the present invention, the thickness of the bamboo plywood is not less than 10mm, and the butt joint angle between every two adjacent bamboo plywood vertically intersecting is 45 degrees.

The invention also provides a method for manufacturing the combined cross-shaped section column in any one embodiment of the first aspect.

The method for manufacturing the combined cross-shaped section column according to the embodiment of the second aspect of the invention comprises the following steps:

manufacturing the concrete-filled steel tube core column with the U-shaped wings: designing and manufacturing the concrete-filled steel tube core column and the U-shaped wing T-shaped steel plates according to performance requirements, wherein the webs of the four U-shaped wing T-shaped steel plates are vertically arranged and are respectively welded and fixed on the side surfaces of the concrete-filled steel tube core column, so that the cross section of the whole body formed by the four webs and the concrete-filled steel tube core column is approximately cross-shaped, and the concrete-filled steel tube core column with the U-shaped wings defines four occlusion installation areas;

manufacturing the long wood unit: splicing a plurality of small short wood pieces into a plurality of long wood pieces with rectangular cross sections by adopting the first bamboo pins and the latex, wherein the latex is connected to the interface between every two adjacent small short wood pieces, and then processing the plurality of long wood pieces with rectangular cross sections into the long wood units according to the design requirement, so that one part of each long wood unit can be embedded in the corresponding occlusion installation area in a matching manner;

Manufacturing the U-shaped wing steel pipe concrete-small short wood combined column: after the first structural adhesive is coated on the connection interfaces of the four long wood units and the concrete-filled steel tube core column with the U-shaped wing, parts of the four long wood units are respectively embedded in the four occlusion installation areas of the concrete-filled steel tube core column with the U-shaped wing in a one-to-one corresponding and adaptive mode, and therefore the concrete-filled steel tube-small short wood combined column with the cross-shaped section is formed;

connecting the bamboo plywood with the U-shaped wing steel pipe concrete-small short wood combined column: firstly, respectively sticking a plurality of bamboo plywood plates on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, after the bonding strength meets the requirement, punching holes for the second bamboo pins to be pinned into the bamboo plywood plates and the long wood units according to the design arrangement, then coating the second latex on the surfaces of the second bamboo pins and then pinning into the holes, thereby forming the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined cross-shaped column.

According to an embodiment of the second aspect of the invention, further comprising the steps of:

Surface treatment: and (3) carrying out surface polishing and smoothing treatment on the exposed part of the bamboo plywood on the combined cross-shaped column of the concrete filled steel tube with the U-shaped wing, the small short wood and the bamboo plywood.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of an embodiment of the present invention showing one orientation of a composite cross-section column.

Fig. 2 is a schematic structural view of another orientation of a combined cross-section column according to an embodiment of the first aspect of the present invention.

Fig. 3 is a schematic structural view of a concrete-filled steel tube core column with U-shaped wings incorporating a cross-shaped cross-section column according to an embodiment of the first aspect of the present invention.

Fig. 4 is a schematic structural view of a long wooden unit combined with a cross-section column according to an embodiment of the first aspect of the present invention.

Fig. 5 is a schematic structural diagram of a bamboo plywood combined with cross-section columns according to an embodiment of the first aspect of the invention.

Reference numerals:

combined cross section column 1000

Concrete-filled steel tube core column 1 with U-shaped wings

Steel tube 111 concrete 112 of steel tube concrete core column 11

Flanged edge 1221 of flange 122 of web 121 of U-shaped wing T-shaped steel plate 12

Snap-in mounting area 13

Long wood unit 2 tongue-and-groove 21

Bamboo plywood 3

First bamboo pin 4

Second bamboo pin 5

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A composite cross-section post 1000 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1 to 5, a combined cross-section column 1000 according to an embodiment of the first aspect of the present invention, the combined cross-section column 1000 being a U-wing concrete-filled steel tube-cork-bamboo plywood combined cross-column, includes a U-wing concrete-filled steel tube core column 1, the long wood unit 2 and the bamboo veneers 3, the concrete-filled steel tube core column 1 with the U-shaped wings comprises a concrete-filled steel tube core column 11 and four T-shaped steel plates 12 with the U-shaped wings, web plates 121 of the four T-shaped steel plates 12 with the U-shaped wings are vertically arranged and are respectively welded and fixed on the side faces of the concrete-filled steel tube core column 11, the cross section of the whole formed by the four web plates 121 and the concrete-filled steel tube core column 11 is approximately cross-shaped, and folded edges 1221 on wing plates 122 of the four T-shaped steel plates 12 with the U-shaped wings are respectively opposite to the corresponding web plates 121 at intervals, so that the concrete-filled steel tube core column 1 with the U-shaped wings defines four occlusion installation areas 13; four long wood units 2 are provided; the cross sections of the four long wood units 2 are approximately L-shaped, and the end surfaces of two sides of the four long wood units 2 are respectively provided with a tongue-and-groove 21; the four long wood units 2 are formed by splicing a plurality of small short wood into long wood with a rectangular cross section by adopting first bamboo pins 4 and latex, and then processing the long wood with the rectangular cross section according to design requirements, wherein the latex is bonded on the interface between every two adjacent small short wood; the four long wood units 2 are respectively embedded in the four occlusion mounting areas 13 in a one-to-one corresponding and adaptive manner, the folded edges 1221 of the four wing plates 122 are respectively embedded in the corresponding tongue-and-groove 21, and interfaces between the four long wood units 2 and the concrete-filled steel tube core column 1 with the U-shaped wing are bonded and fixed by adopting first structural adhesive, so that the concrete-filled steel tube-small short wood combined column with the cross-shaped section and the U-shaped wing is formed; the plurality of bamboo plywood plates 3 are respectively fixed on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined columns by adopting second bamboo pins 5 and second structural glue so as to completely coat the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined columns, wherein the second structural glue is bonded on the interfaces between the bamboo plywood plates 3 and the corresponding U-shaped wing steel pipe concrete-small short wood combined columns.

Specifically, the concrete-filled steel tube core column 1 with the U-shaped wings comprises a concrete-filled steel tube core column 11 and four U-shaped wing T-shaped steel plates 12, web plates 121 of the four U-shaped wing T-shaped steel plates 12 are vertically arranged and are respectively welded and fixed on the side faces of the concrete-filled steel tube core column 11, the cross section of the whole formed by the four web plates 121 and the concrete-filled steel tube core column 11 is approximately cross-shaped, and folded edges 1221 on wing plates 122 of the four U-shaped wing T-shaped steel plates 12 are respectively opposite to the corresponding web plates 121 at intervals, so that the concrete-filled steel tube core column 1 with the U-shaped wings defines four occlusion mounting areas 13; as can be understood, the hems 1221 of the wing plates 122 of the four U-shaped wing T-shaped steel plates 12 are embedded into the four long wood units 2 to play a role of firm pulling and tying, so that the fixation is reliable; the concrete filled steel tube core column 11 and the four U-shaped wing T-shaped steel plates 12 are welded and fixed to achieve the core compression resistance effect.

Four long wood units 2 are provided; the cross sections of the four long wood units 2 are approximately L-shaped, and the end surfaces of two sides of the four first long wood units 2 are respectively provided with a tongue-and-groove 21; the four long wood units 2 are formed by splicing a plurality of small short wood into long wood with a rectangular cross section by adopting first bamboo pins 4 and latex, and then processing the long wood with the rectangular cross section according to design requirements, wherein the latex is bonded on the interface between every two adjacent small short wood; the four long wood units 2 are respectively embedded in the four occlusion mounting areas 13 in a one-to-one corresponding and adaptive manner, the folded edges 1221 of the four wing plates 122 are respectively embedded in the corresponding tongue-and-groove 21, and interfaces between the four long wood units 2 and the concrete-filled steel tube core column 1 with the U-shaped wing are bonded and fixed by adopting first structural adhesive, so that the concrete-filled steel tube-small short wood combined column with the cross-shaped section and the U-shaped wing is formed; it can be understood that the plurality of small short woods are spliced into the long wood units 2 in a staggered manner through the first bamboo pins 4 and the latex to form a double connecting interface with the mechanical connection and the complementary interface bonding between the connecting interfaces between every two adjacent small short woods, so that the mechanical biting force between the small short woods can be enhanced, the four long wood units 2 are low in cost and good in stress performance, the wood resources are fully recycled, and the waste of the wood resources is reduced; the four long wood units 2 are respectively embedded in the four occlusion mounting areas 13 in a one-to-one corresponding and adaptive manner, the folded edges 1221 of the four wing plates 122 are respectively embedded in the corresponding grooves and tongues 21, and the interfaces between the four long wood units 2 and the concrete-filled steel tube core column 1 with the U-shaped wing are bonded and fixed by the first structural adhesive, so that the mechanical connection of the matching interfaces between the four long wood units 2 and the concrete-filled steel tube core column 1 with the U-shaped wing and the complementary dual connection interface of interface bonding are realized, and the concrete-filled steel tube-small short wood combined column with the cross-shaped section and the U-shaped wing is simple and reliable in structure. In addition, the tensile property and the shearing resistance of the first bamboo pin 4 are obviously better than those of a wooden pin, so that the defect that a steel screw is easy to rust is overcome, and the first bamboo pin has enough strength and rigidity required by wood connection; the latex has the advantages of firm bonding, good water resistance and weather resistance, and can reliably bond a plurality of small short woods; the structural adhesive has the advantages of high strength, peeling resistance, impact resistance, larger load bearing capacity, aging resistance, fatigue resistance, corrosion resistance, simple and convenient construction process, stable performance within the expected service life of the structure and wide application range, and therefore, the four long wood units 2 and the concrete-filled steel tube core column 1 with the U-shaped wings can be reliably bonded.

The plurality of bamboo plywood plates 3 are respectively fixed on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined columns by adopting second bamboo pins 5 and second structural glue so as to completely coat the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined columns, wherein the second structural glue is bonded on the interfaces between the bamboo plywood plates 3 and the corresponding U-shaped wing steel pipe concrete-small short wood combined columns. It can be understood that the corrosion resistance, the water resistance, the fire resistance, the compression resistance, the tensile resistance, the bending resistance and the like of the bamboo plywood 3 are all obviously better than those of a wood template, the turnover times are also obviously more than those of the wood template, the working stability and the safety are good, the tensile strength of the bamboo plywood 3 is strong, a plurality of bamboo plywood 3 are positioned on the outer side face of the U-shaped wing steel pipe concrete-small short wood combined column with the largest bending resistance, the bending rigidity, the bending bearing capacity and the shearing bearing capacity of the combined column are obviously improved, and the stability is good; a plurality of bamboo rubber plates 3 are respectively fixed on the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined columns through second bamboo pins 5 and second structural adhesives to form a double connection interface of mechanical connection and complementary interface bonding of matching interfaces between the bamboo rubber plates 3 and the U-shaped wing steel pipe concrete-small short wood combined columns, the bamboo plywood 3 and the U-shaped wing steel pipe concrete-small short wood combined column are reliably fixed, in addition, the tensile property and the shearing resistance of the second bamboo pin 5 are obviously better than those of a wooden pin, the defect that a steel screw is easy to rust is overcome, the strength and the rigidity required by wood connection are sufficient, the structural adhesive has high strength, stripping resistance and impact resistance, can bear larger load, is aging-resistant, fatigue-resistant and corrosion-resistant, and has simple and convenient construction process, the bamboo plywood 3 can be reliably bonded with the U-shaped wing steel pipe concrete-small short wood combined column, and has stable performance and wide application range in the expected service life of the structure.

The combined cross-section column 1000 according to the embodiment of the first aspect of the present invention is manufactured by the following steps: firstly, a concrete-filled steel tube core column 1 with U-shaped wings is manufactured, a concrete-filled steel tube core column 11 and U-shaped wing T-shaped steel plates 12 are designed and manufactured according to performance requirements, and webs 121 of the four U-shaped wing T-shaped steel plates 12 are vertically arranged and are respectively welded and fixed on the side faces of the concrete-filled steel tube core column 11, so that the cross section of the whole body formed by the four webs 121 and the concrete-filled steel tube core column 11 is approximately cross-shaped, and the concrete-filled steel tube core column 1 with the U-shaped wings defines four occlusion mounting areas 13; then, four long wood units 2 are manufactured, every two adjacent small short wood are spliced and fixed into long wood with a rectangular section through a first bamboo pin 4, the connecting interface between every two adjacent small short wood is bonded and fixed by latex, then a plurality of long wood materials with rectangular cross sections are taken and processed into four long wood units 2 according to the design requirements, secondly, manufacturing a U-shaped wing steel tube concrete-small short wood combined column, painting first structural adhesive on the connection interface of the four long wood units 2 and the U-shaped wing steel tube concrete core column 1, the four long wood units 2 are respectively pushed in from one ends of four occlusion installation areas 13 of the concrete-filled steel tube core column 1 with the U-shaped wings, so that parts of the four long wood units 2 are respectively embedded in the four occlusion installation areas 13 of the concrete-filled steel tube core column 1 with the U-shaped wings in a one-to-one corresponding and adaptive manner, the small short wood is spliced in a staggered manner to form a U-shaped wing concrete filled steel tube-small short wood combined column with a cross-shaped section; finally, the bamboo plywood 3 is connected with the U-shaped wing steel pipe concrete-small short wood combined column, the plurality of bamboo plywood 3 are respectively adhered to the outer side face of the U-shaped wing steel pipe concrete-small short wood combined column through second structural adhesive to coat the whole outer side face of the U-shaped wing steel pipe concrete-small short wood combined column, holes for pinning the second bamboo pins 5 into the bamboo plywood 3 and the long wood unit 2 are punched according to design arrangement after the bonding strength meets the requirement, then the second latex is coated on the surface of the second bamboo pins 5 and is pinned into the holes, and a double connection interface of mechanical connection of a matching interface and complementary interface bonding between the long wood unit 2 and the bamboo plywood 3 is formed.

The combined cross-section column 1000 according to an embodiment of the first aspect of the present invention has the following advantages: the method comprises the following steps that firstly, a concrete-filled steel tube core column 1 with U-shaped wings can be automatically adjusted and designed based on the stress requirement of a combined column, and the concrete-filled steel tube core column 1 with the U-shaped wings, which has good compression resistance, is adopted at the core pressed part; the outer side surface of the concrete filled steel tube core column 11 with large bending stress adopts the U-shaped wing T-shaped steel plate 12, has the functions of resisting pressure and strengthening the connection between the long wood units 2, and has the advantages of flexible design, reasonable stress and steel saving; secondly, the long wood units 2 formed by the small short wood which are spliced in a staggered mode based on the stress requirement of the combined column are connected in a double mode through cylindrical bamboo pins and glue, the long wood units 2 of the high-performance connecting interface which is formed by mechanical engagement between the small-section short wood and full-interface glue in a coordinated stress mode are close to the performance of the whole wood, the tensile property and the shearing resistance of the bamboo pins are obviously better than those of wood pins, the defect that steel screws are prone to rusting is overcome, and the long wood units 2 have enough strength and rigidity required by wood connection; thirdly, the outer side surface with the maximum bending resistance stress of the combined cross-shaped section column 1000 is covered by a bamboo plywood 3 with the tensile strength and the compressive strength 2 times of that of wood, so that the bending rigidity, the bending resistance bearing capacity and the shearing resistance bearing capacity of the combined column are obviously improved, compared with the rigidity, the strength and the stability of the traditional log column with the same wood and the same cross section, the steel pipe concrete core column 11, the U-shaped wing T-shaped steel plate 12 and the long wood unit 2 formed by splicing short wood in a staggered mode are efficiently matched based on the stress requirement of the combined column, the advantages of different materials are combined, the combined column is integrally formed through firm interface connection, and the good stress performance with controllable design is difficult to achieve by the whole log rectangular column; fourthly, the small-section short wood, the bamboo plywood 3 and the steel pipe concrete core column 1 with the U-shaped wings are organically combined, the structure is simple, the connection is reliable, the ecological environment is protected, and the recycling of small-section waste logs and residual small-section wood processed in the wood industry and the comprehensive utilization of a large amount of ecological bamboo can be powerfully promoted; fifthly, the whole combined cross-shaped section column 1000 does not have an exposed steel part, namely the steel part is completely wrapped by wood and bamboo, so that the durability of the combined column is obviously improved, the combined column is very suitable for a countryside building structure with large volume and wide range, and the appearance of the combined column has the ecological sense of a traditional wood-bamboo structural column.

According to an embodiment of the first aspect of the present invention, the concrete-filled steel tube core column 11 is fabricated by pouring fine gravel concrete 112 into a rectangular steel tube 111, a square steel tube 111, or a round steel tube 111. Thus, the concrete filled steel tube core column 11 has good compression resistance.

According to an embodiment of the first aspect of the present invention, the wall thickness of the steel tube 111 in the concrete-filled steel tube core column 11 is not less than 2mm, the strength grade of the fine crushed concrete 112 is not less than 20MPa, and the particle size of the coarse aggregate in the fine gravel concrete 112 is not more than 100 mm. Therefore, the rigidity and strength of the concrete filled steel tube core column 11 can be ensured.

It should be noted that the concrete 112 may be ordinary concrete 112 or recycled concrete 112, and the coarse aggregate of the recycled concrete 112 is obtained by crushing and screening the waste concrete 112 blocks in the construction waste.

According to one embodiment of the first aspect of the present invention, the strake 122 is a cold-formed steel plate. Thus, the wing plate 122 has good rigidity, low cost, and simple molding.

According to an embodiment of the first aspect of the present invention, the thickness of the wing 122 is not less than 2mm and the thickness of the web 121 is not less than 2 mm. Like this, guaranteed the rigidity and the intensity of pterygoid lamina 122 and web 121, welded fastening between pterygoid lamina 122 and the web 121, and then guarantee that U-shaped wing T shape steel sheet 12 is good to the firm drawknot effect of first log unit 2, second log unit 2 and third log unit 2, rational in infrastructure, the design is nimble.

According to an embodiment of the first aspect of the invention, the compressive bearing capacity of the concrete-filled steel tube core column 1 with U-shaped wings is not less than 50% of the overall compressive bearing capacity of the combined cross-section column 1000. It can be understood that the concrete-filled steel tube core column 1 with the U-shaped wings can play a role in core compression resistance in the combined T-shaped column with the U-shaped wings, namely, the concrete 112, the small short wood and the bamboo plywood 3, and the compression resistance of the combined cross-shaped section column 1000 is improved.

According to an embodiment of the first aspect of the present invention, the small short wood is a small short wood having a cross-section size that meets the design cross-section requirement but does not meet the 1000 column height requirement of the combined cross-section column, or a small short wood having a cross-section size that does not meet the design cross-section requirement and does not meet the 1000 column height requirement of the combined cross-section column. Therefore, the waste small-section logs and the residual section size of the wood processing factory can meet the design section requirement but not meet the 1000-column-height requirement of the combined cross-section column, or the small short wood with the section size not meeting the design section requirement and not meeting the 1000-column-height requirement of the combined cross-section column can be recycled, and the utilization rate of the small short wood is improved.

According to an embodiment of the first aspect of the present invention, the thickness of the bamboo plywood 3 is not less than 10mm, so that the tensile strength of the bamboo plywood 3 can be ensured, and the bending rigidity, the bending bearing capacity and the shearing resistance bearing capacity of the composite column can be ensured; the butt joint angle between every two adjacent bamboo plywood 3 which are vertically intersected is 45 degrees, the structure is simple, and the every two adjacent bamboo plywood 3 can be quickly assembled and butted and conveniently bonded and fixed with the U-shaped wing steel pipe concrete-small short wood combined column.

The second aspect of the present invention also provides a method for manufacturing the combined cross-section pillar 1000 according to any one of the embodiments of the first aspect.

The method for manufacturing the combined cross-shaped section column 1000 according to the embodiment of the second aspect of the present invention includes the following steps:

manufacturing a concrete filled steel tube core column with U-shaped wings 1: designing and manufacturing a concrete-filled steel tube core column 11 and U-shaped wing T-shaped steel plates 12 according to performance requirements, vertically arranging web plates 121 of the four U-shaped wing T-shaped steel plates 12 and respectively welding and fixing the web plates on the side surfaces of the concrete-filled steel tube core column 11, so that the cross section of the whole formed by the four web plates 121 and the concrete-filled steel tube core column 11 is approximately cross-shaped, and the concrete-filled steel tube core column 1 with the U-shaped wings defines four occlusion installation areas 13;

specifically, at first according to design demand design steel pipe 111 and selection concrete 112, pour pea gravel concrete 112 in rectangle steel pipe 111, square steel pipe 111 or round steel pipe 111 form concrete filled steel core post 11, secondly, web 121 and pterygoid lamina 122 welded fastening with four U-shaped wing T shape steel sheets 12, finally, web 121 with four U-shaped wing T shape steel sheets 12 is vertical setting and adopts the mode welded fastening of two side fillet weld respectively on the side of concrete filled steel core post 11, make the holistic cross section of four webs 121 and the concrete filled steel core post 11 constitution roughly cross, thereby make take U-shaped wing concrete filled steel core post 1 to inject four interlock installing areas 13.

Manufacturing a long wood unit 2: splicing a plurality of small short wood into a plurality of long wood materials with rectangular cross sections by adopting a first bamboo pin 4 and latex, wherein the latex is connected to the interface between every two adjacent small short wood, and then processing the plurality of long wood materials with rectangular cross sections into long wood units 2 according to the design requirement, so that one part of each long wood unit 2 can be embedded in the corresponding occlusion installation area 13 in a matching manner;

specifically, two adjacent small short wood pieces are spliced and fixed to the long wood material with the rectangular cross section through the cylindrical bamboo pins, the connecting interface between every two adjacent small short wood pieces is fixed through latex bonding, and then the long wood material with the rectangular cross sections is processed into four long wood units 2 according to design requirements.

Manufacturing a U-shaped wing steel pipe concrete-small short wood combined column: after coating a first structural adhesive on the connecting interface of the four long wood units 2 and the concrete-filled steel tube core column with the U-shaped wing 1, embedding parts of the four long wood units 2 into four occlusion installation areas 13 of the concrete-filled steel tube core column with the U-shaped wing in a one-to-one corresponding and adaptive manner respectively, so as to form the concrete-filled steel tube-small short wood combined column with the cross-shaped section and the U-shaped wing;

specifically, after the first structural adhesive is coated on the connecting interface of the four long wood units 2 and the concrete-filled steel tube core column with the U-shaped wing 1, the four long wood units 2 are pushed in from one ends of the four occlusion mounting areas 13 of the concrete-filled steel tube core column with the U-shaped wing 1, so that parts of the four long wood units 2 are respectively embedded in the four occlusion mounting areas 13 of the concrete-filled steel tube core column with the U-shaped wing 1 in a one-to-one corresponding and adaptive manner, and the small short wood is spliced in a staggered manner to form the concrete-filled steel tube combination column with the U-shaped wing and the small short wood, wherein the cross section of the combination column is in a cross shape.

Connecting the bamboo plywood 3 with the U-shaped wing steel pipe concrete-small short wood combined column: firstly, a plurality of bamboo plywood 3 are respectively adhered to the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, holes for the second bamboo pins 5 to be pinned into the bamboo plywood 3 and the long wood unit 2 are punched according to design arrangement after the adhesive strength meets the requirement, and then the second latex is coated on the surface of the second bamboo pins 5 and is pinned into the holes, so that the U-shaped wing steel pipe concrete-small short wood-bamboo plywood combined cross-shaped column is formed.

Specifically, the plurality of bamboo plywood 3 are respectively adhered to the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column by using second structural adhesive to coat all the outer side surfaces of the U-shaped wing steel pipe concrete-small short wood combined column, holes for inserting the second bamboo pins 5 into the bamboo plywood 3 and the long wood units 2 are punched according to design arrangement after the adhesive strength meets the requirement, second latex is coated on the surfaces of the second bamboo pins 5 and then the second latex is inserted into the holes, and a double connection interface of mechanical connection and interface adhesion complementation of matching interfaces between the four long wood units 2 and the bamboo plywood 3 is formed.

According to an embodiment of the second aspect of the invention, further comprising the steps of:

Surface treatment: and (3) carrying out surface polishing and smoothing treatment on the exposed part of the bamboo plywood 3 on the combined cross-shaped column with the U-shaped wing steel pipe concrete, the small short wood and the bamboo plywood. Specifically, the exposed part of the bamboo plywood 3 on the combined cross-shaped column with the U-shaped wing steel pipe concrete, the small short wood and the bamboo plywood is subjected to surface polishing and smoothing treatment, when chromatic aberration treatment is needed, chromatic aberration treatment is carried out, and then, wood varnish is coated.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.