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A self-adaptive multi-directional displacement composite structure telescopic device for highway bridges

A composite structure and expansion device technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as damage to expansion joints, achieve comfortable driving, simplify construction methods and technical requirements, and facilitate installation and replacement

Active Publication Date: 2017-05-10
吴昊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to avoid the shortcomings of the existing telescopic device technology, the present invention provides a self-adaptive multi-directional displacement compound structure telescopic device for road bridges, which uses different material properties and structural components to make the telescopic device not only ensure structural rigidity, but also With good flexibility, it is hoped that it can well solve the problem of expansion joint damage and durability caused by multi-directional deformation and displacement of expansion joints

Method used

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  • A self-adaptive multi-directional displacement composite structure telescopic device for highway bridges
  • A self-adaptive multi-directional displacement composite structure telescopic device for highway bridges
  • A self-adaptive multi-directional displacement composite structure telescopic device for highway bridges

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Get raw materials by weight:

[0041] Ultra-high molecular weight polyethylene UHMWPE is 95 parts,

[0042] 2.5 parts of carbon black, 1 part of carbon fiber, and 1.5 parts of mica powder;

[0043] All the raw materials are fully stirred and mixed evenly, and hot-pressed and formed respectively as the bottom layer of the surface layer, and the elastic polymer adhesive, metal anchor bolt fasteners and the steel plate cushion layer are superimposed and assembled in layers.

Embodiment 2

[0045] Get raw materials by weight:

[0046] Ultra-high molecular weight polyethylene UHMWPE is 90 parts,

[0047] High-density polyethylene HDPE is 3 parts,

[0048] Polyethylene glycol PEG is 2 parts,

[0049] 2 parts of carbon black, 3 parts of glass fiber;

[0050] All raw materials are fully mixed and hot-pressed as the surface layer; the bottom layer is made of cast polyurea products;

[0051] Firstly, the elastic polymer adhesive and metal anchor bolt fasteners are used to superimpose the surface layer and the steel plate cushion layer in layers to form a composite body, and then the raw materials of the bottom surface layer and the composite body are cast and compounded.

Embodiment 3

[0053] Get raw materials by weight:

[0054] Ultra-high molecular weight polyethylene UHMWPE is 90 parts,

[0055] High-density polyethylene HDPE is 4 parts,

[0056] 2 parts of polypropylene PP, 1 part of carbon black, 2 parts of glass fiber and 1 part of quartz powder;

[0057] All raw materials are fully mixed and hot-pressed as the surface layer, and the bottom layer is made of cast polyurethane products;

[0058] Firstly, the elastic polymer adhesive and metal anchor bolt fasteners are used to superimpose the surface layer and the steel plate cushion in layers to form a composite body, and then the raw materials of the bottom surface layer and the composite body are cast and compounded.

[0059] The invention is adapted to multi-directional deformation and high weather resistance and high wear resistance by virtue of the material properties of high molecular polymer. In addition to having the vertical stiffness and compression deformation of ordinary expansion joints, ...

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Abstract

The invention discloses a highway bridge self-adaptation multidirection deformation displacement composite structure retractor device. The highway bridge self-adaptation multidirection deformation displacement composite structure retractor device is characterized in that the composite structure is a two-layer composite structure or a three-layer composite structure; the surface layer of the two-layer composite structure is made from high-molecular polymers, the cushion layer of the two-layer composite structure is steel plates, and the cushion layer is located at the bottom of the surface layer and serves as a bottom layer; the surface layer of the three-layer composite structure is made from high-molecular polymers, the cushion layer of the three-layer composite structure is steel plates, the cushion layer is the interlayer, and a bottom surface layer made from high-molecular polymers is arranged at the bottom of the cushion layer. According to the highway bridge self-adaptation multidirection deformation displacement composite structure retractor device, the damage and durability problems of an expansion joint due to multidirectional deformation and displacement of the expansion joint can be well solved.

Description

technical field [0001] The invention relates to a self-adaptive multi-directional displacement compound structure expansion device for traffic road bridges, specifically a polymer composite structure system for expansion joints of road bridges, which can be prefabricated in a factory modular form and installed on the road surface at the construction site. seam position. Background technique [0002] Highway bridge expansion device is a freely deformable gap-spanning device installed between the connection ends of highway bridge structures. Its function is to make bridge structures respond to factors such as temperature changes, concrete or steel shrinkage, creep displacement, and dynamic loads. Under the action of the bridge, it can maintain free multi-dimensional expansion and contraction to adapt to various deformations of the highway bridge structure. It is an indispensable structural device to ensure the normal operation of the highway bridge. [0003] In addition to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/06B32B15/085B32B15/08B32B15/095
Inventor 桂永全吴昊高柱
Owner 吴昊
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