阅读说明：本技术 一种钢绞线约束竹管混凝土组合竹柱 (Steel strand wires restraint bamboo pipe concrete combination bamboo post ) 是由 何文辉 万义昆 李俞谕 杨锦泉 邓建良 于 2019-07-30 设计创作，主要内容包括：本发明涉及一种钢绞线约束竹管混凝土组合竹柱,包括贯通竹管群、自密实混凝土、用于捆绑贯通竹管群形成柱形的受力整体的钢绞线；贯通竹管群包括内部打通竹节形成连续贯通的空腔的竹管；自密实混凝土填充在竹管的空腔内。属于土木工程建筑结构技术领域。解决了因天然竹材因截面尺寸有限而承载不足的问题,可大幅度提高截面承载力；并且施工方便、成本低廉、外形美观,具有显著经济价值和社会效益。(The invention relates to a steel strand constrained bamboo tube concrete combined bamboo column, which comprises a through bamboo tube group, self-compacting concrete and steel strands, wherein the steel strands are used for binding the through bamboo tube group to form a cylindrical stressed whole; the run-through bamboo pipe group comprises bamboo pipes, the interior of which is provided with bamboo joints to form a continuous run-through cavity; the self-compacting concrete is filled in the cavity of the bamboo tube. Belongs to the technical field of civil engineering building structures. The problem of insufficient bearing due to limited section size of the natural bamboo is solved, and the section bearing capacity can be greatly improved; and the construction is convenient, the cost is low, the appearance is beautiful, and the economic value and the social benefit are obvious.)

1. The utility model provides a steel strand wires restraint bamboo pipe concrete combination bamboo post which characterized in that: the self-compacting concrete self-binding through bamboo pipe group comprises a through bamboo pipe group, self-compacting concrete and steel strands for binding the through bamboo pipe group to form a cylindrical stressed whole; the run-through bamboo pipe group comprises bamboo pipes, the interior of which is provided with bamboo joints to form a continuous run-through cavity; the self-compacting concrete is filled in the cavity of the bamboo tube.

2. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the steel stranded wires at least comprise two steel stranded wires which are respectively arranged at the head end and the tail end of the through bamboo pipe group; the steel strands are sequentially arranged from the head end to the tail end of the through bamboo pipe group, and the interval between every two adjacent steel strands is less than or equal to 1 m.

3. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the through bamboo pipe group comprises 3 bamboo pipes which are closely bound according to a triangle or 4 bamboo pipes which are closely bound according to a square or 7 bamboo pipes which are closely bound according to a hexagon; when 7 bamboo tubes are bound next to each other in a hexagon, 6 bamboo tubes surround 1 bamboo tube in the center.

4. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 2, is characterized in that: the through bamboo pipe group comprises 4 bamboo pipes which are closely bound in a square shape; each steel strand comprises a forming steel strand for binding, forming and fixing after being wound for at least one circle on each bamboo tube, and a binding steel strand for binding two bamboo tubes positioned at opposite angles together after being wound for one circle; wherein the binding steel strand is crossed between the two bound bamboo tubes; different binding steel strands are wound, bound and knotted at the intersection position of the middle.

5. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the steel pipe and the through bamboo pipe group form a stressed whole together so as to improve the bearing capacity of the component; self-compacting concrete is filled in the steel pipe; the steel stranded wires simultaneously bind the steel pipes and the through bamboo pipe group.

6. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the through bamboo pipe group is made of bamboo materials subjected to antiseptic treatment; the bamboo subjected to antiseptic treatment is bamboo soaked by oil-soluble copper naphthenate or zinc naphthenate.

7. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the bamboo tube is mature and flawless bamboo growing naturally for 3 years or more than 3 years; the wall thickness of the bamboo tube is more than or equal to 5mm, the inner diameter of the bamboo tube is more than or equal to 45mm, and the water content range of the bamboo tube is 10-15%.

8. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the aggregate grain diameter of the self-compacting concrete is less than 25mm and less than one fourth of the inner diameter of the bamboo pipe.

9. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the expansion rate of the self-compacting concrete after being filled within 28 days is more than or equal to 0.0002.

10. The steel strand confined bamboo tube concrete combined bamboo column as claimed in claim 1, is characterized in that: the type of the steel strand is 2-3 phi 5.

Technical Field

The invention relates to the technical field of civil engineering building structures, in particular to a steel strand constrained bamboo pipe concrete combined bamboo column.

Background

The bamboo material has a series of advantages of light weight, high strength, good ductility, excellent earthquake resistance and the like, and can be widely applied to soil-wood engineering. Moreover, the bamboo needs to consume a large amount of carbon dioxide in the growth process, so that the energy consumption of the bamboo in the processing and manufacturing process is low, the bamboo can be automatically degraded after being discarded, and the environment is not damaged. The bamboo material also has excellent heat and sound insulation performance. In conclusion, bamboo is an excellent building material suitable for popularization.

in engineering practice, the building development concept of replacing steel with bamboo and replacing wood with bamboo is vigorous, the current shortage situation of building materials and fiber materials can be effectively relieved, and the ecological development is greatly promoted. However, the natural bamboo material has limited application in engineering due to the defects of limited section size, low bearing capacity and rigidity and poor fireproof performance.

Although widely used in engineering structures, concrete has the disadvantages of heavy weight, low tensile strength, easy cracking and the like. In addition, extra templates are often needed for manufacturing concrete members, and the manufacturing of the templates requires great manpower and material resources.

The connection of traditional lattice type bamboo tube combined column lacing materials is not well solved, and the problems that holes need to be drilled on the bamboo tubes, the cross sections are weakened, and stress concentration is easy to generate are solved. Because the section size and the bearing capacity of the natural bamboo wood are limited, the instability problem is easily caused when the limb distance is too large.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to: the steel strand confined bamboo tube concrete combined bamboo column solves the problem of insufficient bearing due to limited section size of natural bamboo, and can greatly improve section bearing capacity so as to facilitate popularization of bamboo application in engineering.

In order to achieve the purpose, the invention adopts the following technical scheme:

A steel strand constrained bamboo tube concrete combined bamboo column comprises a through bamboo tube group, self-compacting concrete and steel strands for binding the through bamboo tube group to form a cylindrical stressed whole; the run-through bamboo pipe group comprises bamboo pipes, the interior of which is provided with bamboo joints to form a continuous run-through cavity; the self-compacting concrete is filled in the cavity of the bamboo tube. After the structure is adopted, the through bamboo pipe groups are connected through the steel stranded wires, and the reinforcing effect of the self-compacting concrete is added, so that the problem of insufficient bearing capacity caused by limited size of natural bamboo materials is effectively solved; meanwhile, the through bamboo pipe group can be used as a template for filling the self-compacting concrete and can also provide circumferential restraint for the self-compacting concrete, so that the self-compacting concrete becomes a three-dimensional compressed state and the stress performance of the self-compacting concrete is improved; the construction is convenient, the cost is low, the bearing capacity is high, and the vertical stress member can be widely applied to bridges and houses.

Preferably, the steel strands at least comprise two steel strands which are respectively arranged at the head end and the tail end of the through bamboo pipe group; the steel strands are sequentially arranged from the head end to the tail end of the through bamboo pipe group, and the interval between every two adjacent steel strands is less than or equal to 1 m. After the structure is adopted, the through bamboo pipe groups are fixedly connected into a stressed whole, the calculation length under pressure is reduced, and the integral instability is avoided.

On the premise of not influencing the original appearance and stability of the bamboo wood, the bamboo tubes with different numbers and the combination modes with different shapes can be designed, so that the bamboo wood composite material is suitable for different building forms and different bearing capacity requirements. Preferably, the through bamboo pipe group comprises 3 bamboo pipes which are closely bound in a triangular manner or 4 bamboo pipes which are closely bound in a square manner or 7 bamboo pipes which are closely bound in a hexagonal manner; when 7 bamboo tubes are bound next to each other in a hexagon, 6 bamboo tubes surround 1 bamboo tube in the center.

Preferably, the through bamboo pipe group comprises 4 bamboo pipes which are bound next to each other in a square shape; each steel strand comprises a forming steel strand for binding, forming and fixing after being wound for at least one circle on each bamboo tube, and a binding steel strand for binding two bamboo tubes positioned at diagonal positions together after being wound for one circle; wherein the binding steel strand is crossed between the two bound bamboo tubes; different binding steel strands are wound, bound and knotted at the intersection position of the middle. After the structure is adopted, the through bamboo pipe groups are effectively fixedly connected into a stressed whole, the stressed calculated length is reduced, and the integral instability is avoided.

Preferably, the steel strand confined bamboo tube concrete combined bamboo column further comprises a steel tube which forms a stressed whole together with the through bamboo tube group so as to improve the bearing capacity of the member; self-compacting concrete is filled in the steel pipe; the steel stranded wires simultaneously bind the steel pipes and the through bamboo pipe group. After the structure is adopted, part of bamboo pipes are replaced by steel pipes on the premise of not damaging the appearance and the stability, so that the bearing capacity of the component is improved.

Preferably, the through bamboo pipe group is made of bamboo materials subjected to antiseptic treatment; the bamboo subjected to antiseptic treatment is bamboo soaked by oil-soluble copper naphthenate or zinc naphthenate. Is beneficial to improving the durability of the component and is safer and more environment-friendly.

Preferably, the bamboo tube is mature and flawless bamboo growing naturally for 3 years or more than 3 years; the wall thickness of the bamboo tube is more than or equal to 5mm, the inner diameter of the bamboo tube is more than or equal to 45mm, and the water content range of the bamboo tube is 10-15% (including 10% and 15%); helping to ensure the bearing capacity requirement.

preferably, the aggregate particle size of the self-compacting concrete is less than 25mm and less than one fourth of the inner diameter of the bamboo tube. The self-compacting concrete in the pipe can be guaranteed to be compact.

Preferably, the self-compacting concrete requires an expansion rate of 0.0002 or more within 28 days after filling. The self-compacting concrete in the pipe is guaranteed.

Preferably, the steel strand is 2-3 phi 5 in size, which helps to ensure the flexibility required for binding and fixing the bamboo tubes.

In summary, the present invention has the following advantages:

(1) The invention conforms to the concept of sustainable development in China, fully utilizes bamboo resources with rich storage capacity, exerts the advantage of good toughness and ductility of bamboo, has low carbon and environmental protection in the manufacturing process, saves energy, reduces emission, and greatly expands the application range of bamboo in the field of civil engineering.

(2) the bamboo tube with the continuous through cavity formed by the bamboo joints can be used as a template for self-compacting concrete pouring, so that the process flows of formwork support and formwork removal during the pouring of the traditional concrete member are omitted, the complex structural member processing technology is simplified, the construction is greatly simplified, and the cost is reduced. Meanwhile, the bamboo tube can also provide circumferential restraint for the self-compacting concrete, so that the self-compacting concrete is in a three-dimensional stress state, and the stress performance of the self-compacting concrete is improved.

(3) The bamboo tube is bound and fixed by the steel strand, and compared with the traditional screw fixation, the cross section does not need to be weakened, and the processing is more convenient. The steel strand can also play the role of reducing the vertical compression calculation height and improving the overall stability.

(4) In order to adapt to different building forms and different bearing capacity requirements, on the premise of not influencing the original appearance and stability of bamboo wood, the invention provides a combination mode of different numbers of bamboo tubes and different shapes, and a part of bamboo tubes can be replaced by steel tubes.

(5) The bamboo-wood composite bamboo pipe is designed to ensure the natural appearance of bamboo wood as much as possible, and the combination form among the bamboo pipes is concise and symmetrical as much as possible, so that the aesthetic feeling of the design is ensured.

(6) Compared with the original bamboo structure, the invention solves the problem of insufficient bearing caused by limited section size of the natural bamboo, and can greatly improve the section bearing capacity; the bamboo column has the advantages of convenient construction, low cost, beautiful appearance and obvious economic value and social benefit.

Drawings

Fig. 1 is a schematic cross-sectional view of a steel strand confined bamboo tube concrete composite bamboo column in the second embodiment;

FIG. 2 is a schematic longitudinal sectional view of a steel strand confined concrete filled bamboo tube composite bamboo column according to the second embodiment;

Fig. 3 is an overall structural schematic view of a steel strand confined bamboo tube concrete combined bamboo column in the second embodiment;

Fig. 4 is a schematic cross-sectional view of a steel strand confined bamboo tube concrete composite bamboo column in the first embodiment;

Fig. 5 is a schematic cross-sectional view of a steel strand confined bamboo tube concrete composite bamboo column in the third embodiment;

Fig. 6 is a schematic cross-sectional view of a steel strand confined concrete filled bamboo tube composite bamboo column according to the fourth embodiment;

Shown in the figure: 1 is a through bamboo pipe group, 2 is self-compacting concrete, 3 is a steel strand, 4 is a cavity, 5 is a bamboo joint, and 6 is a steel pipe.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments.