Integral prefabricated cross-laminated timber (CLT) wooden plate girder bridge based on steel side stiffening

A prefabricated, steel edge technology, applied to bridges, bridge parts, bridge materials, etc., can solve the problems of wooden bridges being easily corroded by moisture and other natural factors, poor coordination ability, and difficulty in on-site construction, so as to achieve reasonable stress , Solve the effect of poor coordination ability and short construction period

Inactive Publication Date: 2011-04-13
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an integral prefabricated CLT plank girder bridge based on steel edge reinforcement, which is light and environmentally friendly, simple in structure, reasonable in force, easy in construction, and compatible with the surrounding environment. The coordination is good, which can effectively solve many problems existing in the existing bridges, such as the poor coordination between the bridge structure and the surrounding environment, the wooden structure bridge is vulnerable to moisture and other natural factors, and the construction site is difficult.

Method used

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  • Integral prefabricated cross-laminated timber (CLT) wooden plate girder bridge based on steel side stiffening
  • Integral prefabricated cross-laminated timber (CLT) wooden plate girder bridge based on steel side stiffening
  • Integral prefabricated cross-laminated timber (CLT) wooden plate girder bridge based on steel side stiffening

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Effect test

Embodiment 1

[0032] Such as figure 1 , figure 2 and image 3 As shown, the present invention includes a bridge superstructure and a bridge substructure integrally supporting the bridge superstructure, and the bridge superstructure is made of a plurality of CLT (cross-laminated timber, cross-laminated timber) wooden beams 1 Assembled girder bridge load-bearing girder with girder bridge deck on the upper part, the CLT wooden beam plate 1 is in the shape of a cuboid, and multiple pieces of the CLT wooden beam plate 1 are laid on the same level.

[0033] The CLT wooden beam 1 includes a cuboid-shaped beam structure made of multi-layer wooden laminates glued together, and the fastening buckles are installed on the upper and lower corners of the front and rear ends of the beam structure, and the corners are integrally reinforced The number of the wooden laminates is at least three layers, and the wooden laminates of multiple layers are stacked together from top to bottom, and the wooden lamin...

Embodiment 2

[0041] In this embodiment, the difference from Embodiment 1 is that in this embodiment, the number of multi-layer wooden laminates in the CLT wooden beam 1 is four layers, and the CLT wooden beam 1 is a four-layer structure CLT The wooden beam 1, all the square timbers in the adjacent two layers of wooden laminates (that is, the second and third wooden laminates from top to bottom) located in the middle of the CLT wooden beam 1 are arranged in parallel, and the upper beam All the square timbers in the adjacent two layers of wooden laminates (that is, the first and second wooden laminates from top to bottom) are arranged orthogonally, and the lower beams (that is, the third and fourth floors from top to bottom) All the square timbers in the adjacent two-layer wooden laminates in one layer of wooden laminates are arranged orthogonally. In this embodiment, the structure, installation method and installation process of the remaining parts are the same as those in Embodiment 1.

Embodiment 3

[0043] In this embodiment, the difference from Embodiment 1 is that in this embodiment, the number of multi-layer wooden laminates in the CLT wooden beam plate 1 is five layers, and the CLT wooden beam plate 1 is a five-layer structure CLT In the wooden beam slab 1, all the square timbers in the two adjacent wooden laminates are arranged orthogonally. In this embodiment, the structure, installation method and installation process of the remaining parts are the same as those in Embodiment 1.

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Abstract

The invention discloses an integral prefabricated cross-laminated timber (CLT) wooden plate girder bridge based on steel side stiffening, which comprises a bridge superstructure and a bridge substructure, wherein the bridge superstructure is spliced from a plurality of CLT wooden girder plates, and the upper part is provided with girder bridge spandrel girders of a girder bridge deck; each CLT wooden girder plate comprises a girder body structure and corner armor steel sides, the girder body structure is glued from at least three layers of wooden veneer sheets, and the corner armor steel sides are buckled on the upper and lower edges on the front and back ends of the girder body structure and used for stiffening the integral body; and the upper and lower edges on the front and back ends of the girder body structure are correspondingly provided with mounting notches of which the structures and dimensions correspond to those of the corner armor steel sides. The invention has the advantages of light weight, environment friendliness, simple structure, reasonable stressing and good compatibility with surrounding environment, is simple to construct, and can solve the problems of poor compatibility with surrounding environment, easy corrosion from moisture and other natural factors, on-site construction difficulty and the like in the existing bridge.

Description

technical field [0001] The invention belongs to the technical field of bridge construction engineering, in particular to an integral prefabricated CLT plank girder bridge based on steel edge reinforcement. Background technique [0002] The traditional wood structure bridges mainly use sawn wood, screw laminated wood, etc. The integrity of the structure is poor, it is easy to crack under natural conditions, and the connection failure is obvious under long-term loads, and the traditional wood structure bridges are mostly on-site Construction requires a lot of manpower and material resources, and the construction quality is not easy to guarantee. In addition, because the traditional wooden bridge deck (beam) is directly installed on the abutment or abutment support, moisture can easily penetrate into the wood, causing corrosion at the end of the beam after a long time, eventually leading to the destruction of the entire structure. In the current actual use process, the problem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D1/00E01D19/00E01D101/10
Inventor 刘永健刘士林姚晓荣姚文奇傅梅珍
Owner CHANGAN UNIV
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