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CN-122013884-A - Engineering bamboo composite column and construction method thereof

CN122013884ACN 122013884 ACN122013884 ACN 122013884ACN-122013884-A

Abstract

The application discloses an engineering bamboo combined column, which comprises an engineering bamboo column body, wherein steel connecting pieces corresponding to the joints of all floors are arranged at two ends of the engineering bamboo column body, an anchoring structure is arranged on each steel connecting piece, a prestress tensioning piece is arranged on the outer side of the engineering bamboo column body and is connected with the anchoring structure in an adaptive mode, a prestress adjusting piece is arranged on the prestress tensioning piece, and axial precompression is applied to the engineering bamboo column body through adjustment of the prestress adjusting piece, so that the engineering bamboo column body is precompressed. The axial precompression is applied to the engineering bamboo column body through the prestress tensioning piece, precompression is completed, precompression stress is established in advance, bending resistance, compressive strength and overall rigidity of the engineering bamboo column are remarkably improved, residual deformation of the engineering bamboo after being pressed is effectively reduced, structural deviation and uneven node stress caused by overlarge deformation are avoided, application limitation of the existing engineering bamboo column is broken through, and building requirements of higher layers and larger load can be met.

Inventors

  • XU QIUHUA
  • ZHU ZHIGANG
  • XIONG JINGANG
  • CHENG JINLONG
  • HU JIANG
  • ZHANG JUNLI
  • ZHANG HUIZHEN
  • WANG YUNKAI

Assignees

  • 江西省筑木建筑科技有限公司
  • 江西福银建筑技术有限公司

Dates

Publication Date
20260512
Application Date
20260304

Claims (10)

  1. 1. The utility model provides an engineering bamboo composite column, includes engineering bamboo post body (1), engineering bamboo post body (1) both ends are equipped with steel connecting piece (2) corresponding to each floor junction, a serial communication port, be provided with anchor structure (3) on steel connecting piece (2), prestressing force tensioning member (4) have been laid in the outside of engineering bamboo post body (1), prestressing force tensioning member (4) with anchor structure (3) adaptation is connected, prestressing force adjusting part has been configured on prestressing force tensioning member (4), prestressing force tensioning member (4) are through prestressing force adjusting part's regulation is to engineering bamboo post body (1) is exerted axial precompression, makes engineering bamboo post body (1) accomplish precompression.
  2. 2. The engineered bamboo composite column according to claim 1, wherein the prestress tensioning members (4) are uniformly arranged along the circumferential direction of the engineered bamboo column body (1), and the number of the prestress tensioning members (4) is eight.
  3. 3. The engineered bamboo composite column of claim 1, wherein the anchoring structure (3) is an anchoring perforated support, and the prestress tensioning member (4) is arranged through the anchoring perforated support; one end of the prestress tensioning piece (4) is provided with a threaded section, the other end of the prestress tensioning piece is provided with a perforated limit head with the diameter larger than that of the anchoring perforated support, the threaded section is in threaded fit with the prestress adjusting piece, and the limit head and the prestress adjusting piece are respectively positioned on the opposite sides of the two anchoring perforated supports; or the two ends of the prestress tensioning piece (4) are respectively provided with a thread section, each thread section is respectively in threaded fit with one prestress adjusting piece, and the two prestress adjusting pieces are respectively positioned on the opposite sides of the two anchoring perforation supports.
  4. 4. The engineered bamboo composite pole of claim 1, wherein the pre-compression of the engineered bamboo pole body (1) is no less than 1% of its axial height.
  5. 5. The engineered bamboo composite column of claim 1, wherein the prestressed tensioning member (4) is a prestressed reinforcement or a prestressed bundle, and the prestressed bundle is formed by twisting a plurality of steel strands.
  6. 6. The engineering bamboo composite post according to any one of claims 1-5, wherein a disassembly-free mold shell (5) is sleeved on the periphery of the engineering bamboo post body (1), a cavity is reserved between the disassembly-free mold shell (5) and the engineering bamboo post body (1), and the prestress tensioning piece (4) and the anchoring structure (3) are both positioned in the cavity.
  7. 7. The engineering bamboo composite column according to claim 6, wherein the disassembly-free formwork (5) is made of one of bamboo fiber reinforced concrete, cement fiber composite board or foaming ceramic board; And/or, the disassembly-free die shell (5) is fixedly connected with the engineering bamboo column body (1) through stainless steel self-tapping screws and/or temporary buckles, and the stainless steel self-tapping screws and the temporary buckles are distributed along the circumferential direction and the vertical interval of the disassembly-free die shell (5).
  8. 8. The engineering bamboo composite column according to claim 6, wherein self-compaction foam concrete (6) is poured in the cavity, and the self-compaction foam concrete (6) fills and coats the exposed parts of the prestress tensioning member (4), the anchoring structure (3) and the steel connecting member (2); and/or the outer surface of the disassembly-free mold shell (5) is provided with a decorative coating (7), and the decorative coating (7) is one of elastic coating, real stone paint, flexible surface brick layer or bamboo pattern-imitating coating.
  9. 9. A method of constructing an engineered bamboo composite column of any one of claims 1-8, comprising the steps of: prefabricating an engineering bamboo column body (1), fixedly arranging steel connectors (2) on the engineering bamboo column body (1) at the positions corresponding to the floors, and installing an anchoring structure (3) on the steel connectors (2); A prestress tensioning member (4) is arranged on the outer side of the engineering bamboo column body (1), the prestress tensioning member (4) is connected with the anchoring structure (3) in an adapting mode, and a prestress adjusting member is arranged on the prestress tensioning member (4); Operating the prestress adjusting piece to enable the prestress tensioning piece (4) to apply axial prestress to the engineering bamboo column body (1) so as to enable the engineering bamboo column body (1) to finish precompression; Hoisting the pre-compressed engineering bamboo column body (1) to a construction station, completing the connection between the engineering bamboo column body (1) and an external building component, and if the engineering bamboo column body (1) is a multi-section engineering bamboo column body (1), splicing the upper engineering bamboo column body (1) and the lower engineering bamboo column body, and correspondingly connecting the pre-stress tensioning pieces (4) of the upper section and the lower section to form an integral engineering bamboo combined column.
  10. 10. The construction method of the engineered bamboo composite column according to claim 9, wherein in the shop prefabrication stage, after the pre-compression of the engineered bamboo column body (1) is completed, further comprising the steps of: The method comprises the steps that a disassembling-free mould shell (5) is arranged on the periphery of an engineering bamboo column body (1) subjected to precompression, a cavity is reserved between the disassembling-free mould shell (5) and the engineering bamboo column body (1), and a prestress tensioning piece (4) and an anchoring structure (3) are located in the cavity; And pouring concrete into the cavity to form a reinforced concrete enclosure, wherein the disassembly-free mold shell (5) is used as a disassembly-free outer mold plate of the reinforced concrete enclosure, and the exposed parts of the prestress tensioning member (4), the anchoring structure (3) and the steel connecting member (2) are completely coated after the concrete is solidified.

Description

Engineering bamboo composite column and construction method thereof Technical Field The application relates to the technical field of building components, in particular to an engineering bamboo combined column and a construction method thereof. Background Bamboo is used as a renewable low-carbon biomass material, has the characteristics of high strength-weight ratio, light weight, shock resistance, excellent heat preservation and heat insulation performance and mechanical mass production, and is made into glued bamboo, recombined bamboo and other engineering bamboo profiles through cutting, drying, gluing and other processes, so that the defect of round bamboo materials and dimensional variability are overcome, the bamboo becomes one of core structural materials of an assembled green building, and an engineering bamboo column is a key vertical bearing member in an engineering bamboo structural building. In the prior art, the engineering bamboo column is mainly prefabricated in factories and assembled on site, steel connectors are arranged at corresponding positions of floors of the engineering bamboo column body, and standardized and efficient connection of nodes is realized through bolt connection of the steel connectors and engineering bamboo beams, shear walls and other components, so that the construction bamboo column is suitable for development requirements of building industrialization. The existing engineering bamboo column has a plurality of technical bottlenecks in practical engineering application, and is difficult to meet the building structure requirements of higher layers and larger load, firstly, the strength and rigidity of the engineering bamboo column have inherent limitations, and the existing engineering bamboo column does not adopt additional structure strengthening measures, is easy to generate excessive compression deformation under the action of larger load, and causes the reduction of structural stability; secondly, the engineering bamboo material shows obvious nonlinear mechanical behavior when being pressed, and the residual deformation is large after being pressed, so that the problems of structural dimension deviation, uneven stress of nodes and the like easily occur in engineering application of the engineering bamboo column, and the engineering application scene of the engineering bamboo column is severely limited. Disclosure of Invention The embodiment of the invention aims to provide an engineering bamboo combined column and a construction method thereof, which can solve the problems in the related art. In order to achieve the above purpose, the application adopts the following technical scheme: On the one hand, an engineering bamboo composite column is provided, which comprises an engineering bamboo column body, the engineering bamboo column body has set firmly the steel connecting piece that corresponds each floor junction, be provided with anchor structure on the steel connecting piece, the prestressing force tensioning member has been laid to the outside of engineering bamboo column body, prestressing force tensioning member with anchor structure adaptation is connected, the last prestressing force regulating part that has configured of prestressing force tensioning member, prestressing force tensioning member passes through prestressing force regulating part's regulation to the axial precompression is exerted to engineering bamboo column body, makes engineering bamboo column body accomplishes precompression. Optionally, the prestress tensioning members are uniformly arranged along the circumferential direction of the engineering bamboo column body, and the number of the prestress tensioning members is eight. Optionally, the anchoring structure is an anchoring perforated support, and the prestress tensioning member is arranged on the anchoring perforated support in a penetrating manner; One end of the prestress tensioning piece is provided with a threaded section, the other end of the prestress tensioning piece is provided with a perforated limit head with the diameter larger than that of the anchoring perforated support, the threaded section is in threaded fit with the prestress adjusting piece, and the limit head and the prestress adjusting piece are respectively positioned on the opposite sides of the two anchoring perforated supports; Or the two ends of the prestress tensioning piece are respectively provided with a threaded section, each threaded section is respectively in threaded fit with one prestress adjusting piece, and the two prestress adjusting pieces are respectively positioned on the opposite sides of the two anchoring perforation supports. Optionally, the precompression amount of the engineering bamboo column body is not less than 1% of the axial height of the engineering bamboo column body. Optionally, the prestress tensioning member is a prestress steel bar or a prestress bundle, and the prestress bundle is formed by twisting a plurality of steel strand