阅读说明：本技术 一种混凝土梁转换钢柱的刚接节点 (Rigid connection node of concrete beam conversion steel column ) 是由 应坚国 管际明 朱婷媛 包联进 李明 童骏 丁国 于 2021-06-25 设计创作，主要内容包括：本发明属于建筑工程技术领域的一种混凝土梁转换钢柱的刚接节点,技术方案为包括箱形钢柱或H形钢柱、水平短型钢和转换混凝土梁；箱形钢柱或H形钢柱插入十字正交的转换混凝土梁内,箱形钢柱或H形钢柱插入段下端的前后左右四侧面均连接有水平短型钢；水平短型钢预埋在转换混凝土梁内居中放置；在混凝土梁的内部设置有上部纵筋、下部纵筋、抗扭腰筋和箍筋。通过在钢柱的柱脚处周围侧面连接水平短型钢,并预埋在转换混凝土梁内,可有效地将钢柱内力传递给转换混凝土梁,实现钢结构柱脚强节点要求的精细化设计；水平短型钢仅预埋在转换混凝土梁中一小段长度范围内,避免了梁柱节点型钢、钢筋交错,降低施工难度,节约钢材用量,降低造价。(The invention belongs to a rigid connection node of a concrete beam conversion steel column in the technical field of constructional engineering, and adopts the technical scheme that the rigid connection node comprises a box-shaped steel column or an H-shaped steel column, horizontal short section steel and a conversion concrete beam; the box-shaped steel column or the H-shaped steel column is inserted into the cross orthogonal transformation concrete beam, and the front, the rear, the left and the right side surfaces of the lower end of the box-shaped steel column or the H-shaped steel column insertion section are connected with horizontal short section steel; the horizontal short section steel is pre-buried in the conversion concrete beam and placed in the middle; an upper longitudinal bar, a lower longitudinal bar, a torsion-resistant waist bar and a stirrup are arranged in the concrete beam. The horizontal short section steel is connected to the peripheral side face of the column base of the steel column and is embedded in the conversion concrete beam, so that the internal force of the steel column can be effectively transmitted to the conversion concrete beam, and the fine design of the strong joint requirement of the steel structure column base is realized; horizontal short section steel is only pre-buried in a small segment length range in the conversion concrete beam, has avoided beam column node shaped steel, reinforcing bar crisscross, reduces the construction degree of difficulty, practices thrift the steel quantity, reduces the cost.)

1. The utility model provides a rigid connection node of concrete beam conversion steel column which characterized in that: the steel beam comprises a box-shaped steel column (1), horizontal short section steel (2) and a conversion concrete beam (4); the box-shaped steel column (1) is inserted into the cross-shaped orthogonal conversion concrete beam (4), and the front, rear, left and right side surfaces of the lower end of the insertion section of the box-shaped steel column (1) are connected with the horizontal short section steel (2); the horizontal short section steel (2) is pre-buried in the conversion concrete beam (4); horizontal inner partition plates (5) are arranged in the inner cavity of the box-shaped steel column (1) and at positions corresponding to upper and lower flanges of the horizontal short section steel (2) and upper longitudinal ribs (10) of the conversion concrete beam (4), and holes are formed in the centers of the horizontal inner partition plates (5) and used for pouring concrete (6).

2. The utility model provides a rigid connection node of concrete beam conversion steel column which characterized in that: the system comprises an H-shaped steel column (7), horizontal short section steel (2) and a conversion concrete beam (4); the H-shaped steel columns (7) are inserted into the cross-shaped orthogonal conversion concrete beam (4), and the front, rear, left and right side surfaces of the lower ends of the insertion sections of the H-shaped steel columns (7) are connected with the horizontal short section steel (2); the horizontal short section steel (2) is pre-buried in the conversion concrete beam (4); horizontal partition plates (8) are arranged between column flanges of the H-shaped steel columns (7) and at positions corresponding to upper and lower flanges of the horizontal short steel sections (2) and upper longitudinal ribs (10) of the conversion concrete beam (4).

3. The rigid connection node for a concrete beam conversion steel column according to claim 1 or 2, wherein: the conversion concrete beam (4) is internally provided with an upper longitudinal bar (10), a lower longitudinal bar (11) and an anti-torsion waist bar (12), and a beam rectangular stirrup (13) and a diamond stirrup (14) are sleeved between the upper longitudinal bar (10) and the lower longitudinal bar (11).

4. The rigid connection node for a concrete beam conversion steel column according to claim 1 or 2, wherein: the horizontal short section steel (2) is H-shaped in section; a plurality of pegs (3) are welded to the upper surface of an upper flange, the lower surface of a lower flange and two sides of a web plate of the horizontal short section steel (2), and the pegs (3) are evenly distributed along the length direction of the horizontal short section steel (2).

5. The rigid connection node for a concrete beam conversion steel column according to claim 1 or 2, wherein: horizontal short steel (2) are pre-buried place placed in the middle in conversion concrete roof beam (4), horizontal short steel (2) distance conversion concrete roof beam (4) roof beam top and beam-bottom are not less than 250 millimeters respectively, horizontal short steel (2) distance conversion concrete roof beam (4) beam side is not less than 150 millimeters respectively.

6. The rigid connection node for a concrete beam conversion steel column according to claim 1, wherein: the length of the horizontal short section steel (2) extending out of the side edge of the box-shaped steel column (1) is not less than 2 times of the height of the section of the box-shaped steel column (1) in the same direction, the height of the section of the horizontal short section steel (2) is not less than the height of the section of the box-shaped steel column (1) in the same direction, and the thickness of the upper flange and the lower flange of the horizontal short section steel (2) is not less than the thickness of the wall plate of the connected box-shaped steel column (1).

7. The rigid connection node for the concrete beam conversion steel column according to claim 2, wherein: the length of the horizontal short section steel (2) extending out of the side edge of the H-shaped steel column (7) is not less than 2 times of the height of the section of the H-shaped steel column (7) in the same direction, the height of the section of the horizontal short section steel (2) is not less than the height of the section of the H-shaped steel column (7) in the same direction, and the thickness of the upper flange and the lower flange of the horizontal short section steel (2) is not less than the thickness of the flange of the H-shaped steel column (7).

8. The rigid connection node for a concrete beam conversion steel column according to claim 1, wherein: the upper longitudinal ribs (10) are connected and fixed to the wall plate of the box-shaped steel column (1) through sleeves (9).

9. The rigid connection node for the concrete beam conversion steel column according to claim 2, wherein: in the weak axis direction of the H-shaped steel column (7), the upper longitudinal rib (10) is fixedly connected to a column flange of the H-shaped steel column (7) through a sleeve (9); and in the strong axial direction of the H-shaped steel column (7), the upper longitudinal rib (10) is fixedly connected to the H-shaped steel column (7) through the horizontal partition plate (8).

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a rigid connection node for a concrete beam conversion steel column.

Background

The prefabricated building has been widely applied to buildings such as public buildings and houses due to the advantages of factory processing, fast field construction, environmental protection and the like. The steel structure is one of main structural forms, and has the characteristics of prefabricated assembly, and the steel structure adopted in the ground building has become one of the main trends of domestic building structure development. The steel structure has obvious advantages when being used for an overground building, but is limited by underground moist corrosive environment, and the basement still mainly adopts a reinforced concrete structure, so that the overground structure adopting the steel structure and the basement adopting the reinforced concrete structure are more common.

Influenced by the difference of the functions of the buildings above ground and underground and the difference of the column nets, the steel columns of the overground part often cannot fall to the foundation bottom plate, and the basement top plate needs to be converted through the reinforced concrete beam.

The overground steel structure building bears loads such as vertical gravity load, horizontal wind load, earthquake action and the like, and transmits the loads to the lower foundation through the pillars. The safety and reliability of the column base node are the premise of ensuring the safety of the upper structure, and the existing structural design specification meets the requirement of the steel structure column base on the column base node under medium and large earthquakes and cannot damage the column body before.

In order to meet the requirement of a strong joint of a steel structure column base, a steel reinforced concrete beam is adopted for conversion in the structural design of an overground conversion steel column, namely, the whole steel reinforced concrete beam is communicated. The method has the construction problems that the beam column node profile steel and the reinforcing steel bar are staggered, the weight of the embedded profile steel is large, the hoisting difficulty is large and the like except that the steel consumption is overlarge and the design is not fine enough, and the engineering cost and the construction difficulty are increased.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a rigid connection node of a concrete beam conversion steel column according to theoretical analysis and full-scale test verification. The method can reduce the steel consumption, facilitate construction, save construction period, break through the existing technical bottleneck and has simple form.

The technical scheme of the invention is as follows:

the first technical scheme is as follows: a rigid connection node of a concrete beam conversion steel column comprises a box-shaped steel column, horizontal short section steel and a conversion concrete beam; the box-shaped steel column is inserted into the cross-shaped orthogonal transformation concrete beam, and the front, rear, left and right side surfaces of the lower end of the inserted section of the box-shaped steel column are connected with horizontal short section steel; the horizontal short section steel is pre-embedded in the conversion concrete beam; and horizontal inner partition plates are arranged in the inner cavity of the box-shaped steel column and at positions corresponding to the upper and lower flanges of the horizontal short section steel and the upper longitudinal bars of the conversion concrete beam, and the center of each horizontal inner partition plate is provided with a hole for pouring concrete.

The second technical scheme is as follows: a rigid connection node of a concrete beam conversion steel column comprises an H-shaped steel column, horizontal short section steel and a conversion concrete beam; the H-shaped steel column is inserted into the cross-shaped orthogonal transformation concrete beam, and the front, rear, left and right side surfaces of the lower end of the insertion section of the H-shaped steel column are connected with horizontal short section steel; the horizontal short section steel is pre-embedded in the conversion concrete beam; horizontal partition plates are arranged between the column flanges of the H-shaped steel columns and at positions corresponding to the upper and lower flanges of the horizontal short section steel and the upper longitudinal bars of the conversion concrete beam.

Based on the technical characteristics: an upper longitudinal bar, a lower longitudinal bar and an anti-torsion waist bar are arranged in the conversion concrete beam, and a beam rectangular stirrup and a diamond stirrup are sleeved between the upper longitudinal bar and the lower longitudinal bar.

Based on the technical characteristics: the horizontal short section steel has an H-shaped section; a plurality of pegs are welded on the upper surface of the upper flange, the lower surface of the lower flange and two sides of the web plate of the horizontal short section steel and are uniformly arranged along the length direction of the horizontal short section steel.

Based on the technical characteristics: the horizontal short steel is pre-buried and placed in the middle in the conversion concrete beam, and horizontal short steel is not less than 250 millimeters apart from conversion concrete beam roof and beam bottom respectively, and horizontal short steel is not less than 150 millimeters apart from conversion concrete beam roof side respectively.

Based on the technical characteristics: the length of the horizontal short section steel extending out of the side edge of the box-shaped steel column is not less than 2 times of the height of the section of the box-shaped steel column in the same direction, the height of the section of the horizontal short section steel is not less than the height of the section of the box-shaped steel column in the same direction, and the thickness of the upper flange and the lower flange of the horizontal short section steel is not less than the thickness of a wall plate of the connected box-shaped steel column.

Based on the technical characteristics: the length of the horizontal short section steel extending out of the side edge of the H-shaped steel column is not less than 2 times of the height of the section of the H-shaped steel column in the same direction, the height of the section of the horizontal short section steel is not less than the height of the section of the H-shaped steel column in the same direction, and the thickness of the upper flange and the lower flange of the horizontal short section steel is not less than the thickness of the flange of the H-shaped steel column.

Based on the technical characteristics: and the upper longitudinal ribs are connected and fixed on the wall plate of the box-shaped steel column through the sleeves.

Based on the technical characteristics: in the weak axis direction of the H-shaped steel column, the upper longitudinal rib is connected and fixed to a column flange of the H-shaped steel column through a sleeve; and in the strong axial direction of the H-shaped steel column, the upper longitudinal ribs are connected and fixed to the H-shaped steel column through the horizontal partition plate.

Compared with the prior art, the invention has the following beneficial effects:

1. the technology is advanced. The horizontal short section steel is connected to the side face of the periphery of the column base of the steel column and is embedded in the conversion concrete beam, so that the internal force of the steel column can be effectively transmitted to the conversion concrete beam, the fine design of the strong node requirement of the steel column base is realized, and the column base node can not be damaged before a column body under medium and large earthquakes.

2. And construction convenience. Horizontal short section steel is only pre-buried in a small segment length range in the conversion concrete beam, has avoided beam column node shaped steel, reinforcing bar crisscross, reduces the construction degree of difficulty, is favorable to engineering quality's control. Meanwhile, the weight of the short steel sections pre-embedded and connected in the transfer beam is very small, and the transfer beam is relatively favorable for transportation and hoisting.

3. And (4) engineering economy. The rigid connection node of the concrete beam conversion steel column provided by the invention cancels the through section steel in the conversion concrete beam, so that the steel consumption can be saved, and the construction cost can be reduced.

Drawings

Fig. 1 is a schematic elevation view of a first embodiment of the present invention.

Fig. 2 is a schematic top view of a first embodiment of the invention.

FIG. 3 is a schematic cross-sectional view taken along line I-I of FIG. 1 according to an embodiment of the present invention.

FIG. 4 is a schematic sectional view II-II of FIG. 1 according to an embodiment of the present invention.

Fig. 5 is a schematic top view of a second embodiment of the invention.

Fig. 6 is a schematic elevation view of a third embodiment of the present invention.

Fig. 7 is a schematic top view of a third embodiment of the present invention.

FIG. 8 is a schematic cross-sectional view III-III of FIG. 6 according to another embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view IV-IV of fig. 6 according to another embodiment of the present invention.

Fig. 10 is a schematic top view of a fourth embodiment of the present invention.

Description of part numbers

1 box-shaped steel column

2 horizontal short section steel

3 stud

4 conversion concrete beam

5 horizontal inner partition board

6 concrete

7H-shaped steel column

8 horizontal clapboard

9 Sleeve

10 upper longitudinal ribs

11 lower longitudinal rib

12 antitorque waist muscle

13 rectangular stirrup

14 diamond stirrup

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Example one

As shown in fig. 1 to 4, the rigid connection node for the concrete beam conversion steel column comprises a box-shaped steel column 1, a horizontal short section steel 2 and a conversion concrete beam 4; the box-shaped steel column 1 is inserted into the cross-shaped orthogonal transformation concrete beam 4, and the front, rear, left and right side surfaces of the lower end of the insertion section of the box-shaped steel column 1 are connected with horizontal short section steel 2; the horizontal short section steel 2 is pre-embedded in the conversion concrete beam 4; an upper longitudinal bar 10 is arranged on the upper side inside the concrete beam 4, a lower longitudinal bar 11 is arranged on the lower side inside the concrete beam 4, an anti-torsion waist bar 12 is arranged on the side inside the concrete beam 4, and a beam rectangular stirrup 13 and a diamond stirrup 14 are sleeved between the upper longitudinal bar 10 and the lower longitudinal bar 11; horizontal inner partition plates 5 are arranged in the inner cavity of the box-shaped steel column 1 and at positions corresponding to the upper flange, the lower flange and the upper longitudinal rib 10 of the horizontal short section steel 2, and a hole in the center of each horizontal inner partition plate 5 is used for pouring concrete 6.

The horizontal short section steel 2 is H-shaped in cross section, a plurality of pegs 3 are welded to the upper surface of the upper flange, the lower surface of the lower flange and the two sides of the web plate, and the pegs 3 are evenly distributed on the horizontal short section steel 2 along the length direction.

Horizontal short section steel 2 is pre-buried and is placed in the middle in conversion concrete beam 4, and horizontal short section steel 2 is not less than 250 millimeters respectively apart from 4 roof beam tops of conversion concrete beam and breast, and horizontal short section steel 2 is not less than 150 millimeters respectively apart from 4 roof beam sides of conversion concrete beam, can avoid conversion concrete beam 4 can not receive shaped steel extrusion and die-cut and take place to destroy in the upper and lower flange of a wing position department of horizontal short section steel 2 to satisfy the construction requirement.

The length of the horizontal short section steel 2 extending out of the side edge of the box-shaped steel column 1 is not less than 2 times of the height of the section of the box-shaped steel column 1 in the same direction, the height of the section of the horizontal short section steel 2 is not less than the height of the section of the box-shaped steel column 1 in the same direction, and the thickness of the upper flange and the lower flange of the horizontal short section steel 2 is not less than the thickness of a wall plate of the connected box-shaped steel column 1. According to theoretical analysis and full-scale test verification, the length and section parameters of the horizontal short steel 2 can meet the requirements on reliable column base embedding rigidity and bearing capacity of the upper box-shaped steel column 1, and the internal force of the box-shaped steel column 1 can be effectively transmitted to the conversion concrete beam 4. According to the experimental result data, the theoretical punching surface that the corner of the horizontal short section steel 2 is parallel to the diamond stirrup 14 shows that the crack is remarkably developed; and no obvious crack appears in the theoretical punching section of the intersection of the corner part of the horizontal short steel 2 and the diamond-shaped stirrup 14, which indicates that the crack resistance of the diamond-shaped stirrup 14 is obvious.

The upper longitudinal ribs 10 are connected and fixed to the wall plate of the box-shaped steel column 1 through sleeves 9.

Example two

The structural form of the present embodiment is substantially the same as that of the first embodiment, and the difference from the first embodiment is that:

as shown in fig. 5, when the converted concrete beam 4 meets the bearing condition, the distance requirement of the horizontal short steel 2 from the edge of the converted concrete beam 4 is met by locally haunching the embedded section of the horizontal short steel 2 in the beam width direction.

EXAMPLE III

As shown in fig. 6 to 9, a rigid connection node for a novel concrete beam conversion steel column comprises an H-shaped steel column 7, a horizontal short section steel 2 and a conversion concrete beam 4; the method is characterized in that: the H-shaped steel column 7 is inserted into the cross orthogonal transformation concrete beam 4, and the front, rear, left and right side surfaces of the lower end of the insertion section of the H-shaped steel column 7 are connected with the horizontal short section steel 2; the horizontal short section steel 2 is pre-embedded in the conversion concrete beam 4; an upper longitudinal bar 10 is arranged on the upper side inside the concrete beam 4, a lower longitudinal bar 11 is arranged on the lower side inside the concrete beam 4, an anti-torsion waist bar 12 is arranged on the side inside the concrete beam 4, and a beam rectangular stirrup 13 and a diamond stirrup 14 are sleeved between the upper longitudinal bar 10 and the lower longitudinal bar 11; and a horizontal clapboard 8 is arranged between the column flanges of the H-shaped steel column 7 and at the position corresponding to the upper and lower flanges and the upper longitudinal rib 10 of the horizontal short steel 2.

The horizontal short section steel 2 is H-shaped in cross section, a plurality of pegs 3 are welded to the upper surface of the upper flange, the lower surface of the lower flange and the two sides of the web plate, and the pegs 3 are evenly distributed on the horizontal short section steel 2 along the length direction.

Horizontal short section steel 2 is pre-buried and is placed in the middle in conversion concrete beam 4, and horizontal short section steel 2 is not less than 250 millimeters respectively apart from 4 roof beam tops of conversion concrete beam and breast, and horizontal short section steel 2 is not less than 150 millimeters respectively apart from 4 roof beam sides of conversion concrete beam, can avoid conversion concrete beam 4 can not receive shaped steel extrusion and die-cut and take place to destroy in the upper and lower flange of a wing position department of horizontal short section steel 2 to satisfy the construction requirement.

The length of the horizontal short section steel 2 extending out of the side edge of the H-shaped steel column 7 is not less than 2 times of the height of the section of the H-shaped steel column 7 in the same direction, the height of the section of the horizontal short section steel 2 is not less than the height of the section of the H-shaped steel column 7 in the same direction, and the thickness of the upper flange and the lower flange of the horizontal short section steel 2 is not less than the thickness of the flange of the H-shaped steel column 7. According to theoretical analysis and full-scale test verification, the length and section parameters of the horizontal short steel 2 can meet the requirements on reliable column base embedding rigidity and bearing capacity of the upper H-shaped steel column 7, and the internal force of the H-shaped steel column 7 can be effectively transmitted to the conversion concrete beam 4. According to the experimental result data, the theoretical punching surface that the corner of the horizontal short section steel 2 is parallel to the diamond stirrup 14 shows that the crack is remarkably developed; and no obvious crack appears in the theoretical punching section of the intersection of the corner part of the horizontal short steel 2 and the diamond-shaped stirrup 14, which indicates that the crack resistance of the diamond-shaped stirrup 14 is obvious.

In the weak axis direction of the H-shaped steel column 7, an upper longitudinal rib 10 is fixedly connected to a column flange of the H-shaped steel column 7 through a sleeve 9; in the strong axial direction of the H-shaped steel column 7, the longitudinal ribs 10 are fixedly connected to the H-shaped steel column 7 through the horizontal partition plate 8.

Example four

The structural form of the present embodiment is basically the same as that of the third embodiment, and the difference from the third embodiment is that:

as shown in fig. 10, when the converted concrete beam 4 meets the load bearing condition, the distance requirement of the horizontal short steel 2 from the edge of the converted concrete beam 4 is met by locally haunching the embedded section of the horizontal short steel 2 in the beam width direction.

The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.