Novel bridge structure without expansion joints

A technology of expansion joints and bridges, which is applied in bridges, bridge parts, bridge construction, etc., can solve problems such as unsuitable design and construction, high technical requirements, cracks in main girders, abutment pile foundations, etc., so as to reduce construction maintenance costs and improve Comfort, the effect of reducing vehicle impact and jumping

Inactive Publication Date: 2014-12-17
陈从春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment method requires high technical requirements, and it is not suitable for design and construction, and it is easy to cause a large number of cracks in the main girder, bridge abutment and pile foundation.

Method used

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  • Novel bridge structure without expansion joints
  • Novel bridge structure without expansion joints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1. Such as figure 1 , the main girder (1) is supported on the bridge abutment (2) through the bridge deck or the cast-in-place layer on it, and is connected with the strap (3) through the steel bar (4), and the strap (3) is connected with the road base ( 5) Connection, the top surface and the bottom surface of the board (3) are provided with several transverse joints (7) of a certain depth; the main beam (1) and the board (3) are laid with asphalt concrete (6).

Embodiment 2

[0013] Example 2. Such as figure 2 , the main girder (1) is supported on the bridge abutment (2) through the span of the bridge deck or the cast-in-place layer on it, and is connected with the strap (3) through the steel bar (4), and the strap (3) is divided into two parts, It is provided with corbel (8,) butting plate (3) and pavement base (5) to connect, and the top surface and bottom surface of butting plate (3) are provided with several roads transverse seams (7) of certain depth; Main girder (1), Asphalt concrete pavement (6) is laid above the board (3).

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PUM

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Abstract

The invention discloses a novel bridge structure without expansion joints. The novel bridge structure comprises a main beam (1), a bridge abutment (2) and a butt strap (3) which is also called an approach flap or a settlement plate. The main beam (1) is supported on the bridge abutment (2) through a bridge deck slab or case-in-place layer joint seams on the main beam and is connected with the butt strap (3) through steel bars (4), the top face and the bottom face of the butt strap (3) are respectively provided with a plurality of cross seams (7) at a certain depth, the butt strap (3) is connected with breaking joints of a pavement base (5), and asphalt concrete mat formations or asphalt concrete surface layers (6) are laid on the main beam (1) and the butt strap (3). The expansion joints between the end of the beam and the bridge abutment can be eliminated, bumping at a bridge head and impact of vehicles an be relieved, rain water and dust can be prevented from entering the beam, design and construction are easy and convenient to carry out and daily maintenance is needless.

Description

technical field [0001] The invention relates to a structure for expansion and deformation of a bridge, in particular to a structure for expansion and deformation of a bridge without a bridge deck expansion joint device. Background technique [0002] In order to meet the needs of deformation, the bridge structure generally sets separation joints at both ends of the beam body, between the beam end and the abutment, also known as expansion joints. In order to make the driving smooth, expansion joints are provided between expansion joints; Set up slabs of 5m to 8m, which are generally cast-in-place as a whole without joints; the slabs are placed on the back wall of the abutment or on the corbels, and kept separate from the main girder. The expansion joint device needs to be replaced and maintained frequently due to the long-term impact, wear and debris blockage of the vehicle. [0003] Some small and medium-sized bridges will adopt integral (or semi-integral) seamless bridges t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D1/00E01D19/12
Inventor 陈从春
Owner 陈从春
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