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Bamboo glued box beam

A box girder and bamboo technology, applied in joists, girders, trusses and other directions, can solve the problems of poor deformation performance, low bearing capacity of original bamboo beams and heavy bamboo beams, and poor ductility, etc. Light weight and good ductility

Pending Publication Date: 2018-07-27
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object to be solved by the present invention is to overcome the shortcomings of the existing original bamboo beams and heavy bamboo beams such as low bearing capacity, poor ductility and poor deformation performance, and to provide a bamboo bamboo beam with good mechanical properties, low cost, simple structure, energy saving and environmental protection. Glued box beams are used to replace the original bamboo beams and heavy bamboo beams, and can be used as floor beams and roof beams in wood structure buildings, bamboo structure buildings and bamboo-wood composite structures

Method used

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  • Bamboo glued box beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: get 9mm thick, 230mm high bamboo plywood as web, get 40mm high, 60mm wide bamboo laminated wood as flange, get 90mm wide, 15mm thick, 150mm high bamboo plywood as stiffener, web The nail spacing between the plate and the upper flange, and between the web and the lower flange is 200mm. The web and the flange are bonded with adhesive and reinforced with nails, and the web and the stiffener are connected with nails. The height of the finished box girder is 240mm high and 2440mm long.

Embodiment 2

[0030] Embodiment 2: Get 12mm thick, 290mm high bamboo plywood as web, get 40mm high, 80mm wide bamboo laminated wood as flange, get 90mm wide, 15mm thick, 210mm high bamboo plywood as stiffener, web The nail spacing between the plate and the upper flange, and between the web and the lower flange is 150mm. The web and the flange are bonded with adhesive and reinforced with nails, and the web and the stiffener are connected with nails. The height of the finished box girder is 300mm high and the length is 3660mm.

Embodiment 3

[0031] Embodiment 3: get 15mm thick, 340mm high bamboo plywood as web, get 60mm high, 120mm wide bamboo laminated wood as flange, get 90mm wide, 15mm thick, 220mm high bamboo plywood as stiffener, web The nail spacing between the plate and the upper flange, and between the web and the lower flange is 100mm. The web and the flange are bonded with adhesive and reinforced with nails, and the web and the stiffener are connected with nails. The height of the finished box girder is 350mm high and the length is 4880mm.

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Abstract

The invention provides a bamboo glued box beam. The bamboo glued box beam mainly comprises an upper flange (1), a lower flange (2), webs (3), stiffening ribs (4), an adhesive (5), nails (6) and waterproof coating (7) together forming the bamboo glued box beam, wherein the webs (3) are located at the side surfaces of the upper flange (1) and the lower flange (2) and bears the shear stress, the upper flange is located at the top surface of the box beam and bears the compressive stress, and the lower flange is located at the bottom surface of the box beam and bears the tensile stress; and the webs (3), the upper flange (1) and the lower flange (2) are connected by the adhesive. The stiffening ribs (4) are arranged at the end of the box beam, tightly abut against the lower flange (2), are closely adhered to the webs (3), and are connected by the nails (6) to improve the local instability of the webs (3). The waterproof coating (7) is applied to the surface of the box beam to take on the function of moisture and corrosion protection. The bamboo glued box beam fully utilizes the characteristics of six kinds of materials, greatly improves the cross sectional moment of inertia of beam members, has the characteristics of light weight, high strength, high rigidity, good durability and good ductility, and can replace traditional original bamboo beams, heavy bamboo beams and wooden beams to be applied to bent members in the fields of wood structure, bamboo structure and composite structure.

Description

technical field [0001] The invention belongs to the field of civil building structures, and in particular relates to a bamboo glued box beam member used in modern bamboo structure houses, wood structure houses and bamboo-wood structure houses. Background technique [0002] The problem of environmental pollution in our country is very prominent. With the enhancement of public awareness of environmental protection, green, ecological and low-carbon new building materials will definitely be a trend in the development of civil engineering technology. Masonry structures and reinforced concrete structures use a lot of traditional building materials such as clay, steel and cement, which consume a lot of energy and non-renewable resources, release a lot of greenhouse gases and toxic gases, and generate a lot of waste water, waste and waste residue . The development of the construction industry is largely realized at the cost of excessive consumption of energy and resources and envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/14E04B1/26
CPCE04B1/26E04C3/14
Inventor 陈国李祥李海涛
Owner NANJING FORESTRY UNIV
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