Bridge deck pavement structure based on high-performance rubber concrete

A rubber concrete and bridge deck pavement technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of reduced service life of structures, increased maintenance costs, fatigue damage, etc., to achieve extended service life, high flexural strength, Effect of improving fatigue resistance

Pending Publication Date: 2021-09-17
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Cement concrete bridge deck pavement is a traditional structural form. It was widely used due to its advantages of high rigidity, high strength and low cost. However, under the long-term action of vehicle loads, the problems of cement concrete pavement are gradually exposed. , easy to crack, fatigue damage, water seepage and other diseases lead to increased maintenance costs and reduced service life of the structure

Method used

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  • Bridge deck pavement structure based on high-performance rubber concrete

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, a bridge deck pavement structure based on high-performance rubber concrete, including rubber cement concrete cast-in-place layer 1 laid on the bridge surface from bottom to top, SBR modified emulsified asphalt waterproof layer 2 and asphalt concrete surface layer 3 , the rubber cement concrete cast-in-place layer 1 is preset with a single-layer two-way steel mesh 4 in the tension zone, and the rubber cement concrete cast-in-place layer 1 on the bridge surface, the SBR modified emulsified asphalt waterproof layer 2 and the asphalt concrete surface layer 3 are total The thickness is 16.3cm;

[0036] Among them, the asphalt concrete surface layer 3 adopts SMA-13 ​​gradation, the porosity is 3.5%, and the thickness is 8.0cm;

[0037] The dosage of SBR modified emulsified asphalt in SBR modified emulsified asphalt waterproof layer 2 is 0.5kg / m 2 ;

[0038] Rubber cement concrete cast-in-place layer 1 uses rubber particles with a particle size of...

Embodiment 2

[0041] Such as figure 1 As shown, a bridge deck pavement structure based on high-performance rubber concrete, including rubber cement concrete cast-in-place layer 1 laid on the bridge surface from bottom to top, SBR modified emulsified asphalt waterproof layer 2 and asphalt concrete surface layer 3 , the rubber cement concrete cast-in-place layer 1 is preset with a single-layer two-way steel mesh 4 in the tension zone, and the rubber cement concrete cast-in-place layer 1 on the bridge surface, the SBR modified emulsified asphalt waterproof layer 2 and the asphalt concrete surface layer 3 are total The thickness is 18.3cm;

[0042] Among them, the asphalt concrete surface layer 3 adopts SMA-16 gradation, the porosity is 4.5%, and the thickness is 10.0cm;

[0043] The dosage of SBR modified emulsified asphalt waterproof layer 2 is 0.6kg / m 2 ;

[0044] Rubber cement concrete cast-in-place layer 1 uses rubber particles with a particle size of 1-2mm, and the mixing method is to ...

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Abstract

The invention relates to a bridge deck pavement structure based on the high-performance rubber concrete, which comprises a rubber cement concrete cast-in-place layer, an SBR modified emulsified asphalt waterproof layer and an asphalt concrete surface layer which are laid on a bridge deck from bottom to top, and a single-layer two-way reinforcing mesh is preset in a tension region of the rubber cement concrete cast-in-place layer. The bridge deck pavement structure has the beneficial effects that the bridge deck pavement structure has good anti-seepage and anti-cracking performance, proper strength and good economic and technical benefits, when the bridge deck pavement structure is applied to engineering, the deformation resistance and the driving comfort can be improved, a beam body is protected against the rain erosion frost heaving effect, the service life of the bridge deck pavement structure is prolonged, and the maintenance and later maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a bridge deck pavement structure based on high-performance rubber concrete. Background technique [0002] With the rapid development of my country's national economy, road traffic construction, especially road bridge construction has made remarkable achievements. Bridge deck pavement is a protective layer directly laid on the bridge deck (main girder). It is an important part of the bridge superstructure. It is worn and weathered under the repeated action of the bridge, and is also constrained by the superstructure of the bridge, which plays the role of protecting the main body of the bridge and providing a comfortable and safe road surface for driving. Therefore, the bridge deck pavement not only needs to have the ability to resist external loads and bridge deformation, but also needs to have the characteristics of smoothness, anti-skid and wear resistance. [0003] ...

Claims

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Application Information

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IPC IPC(8): E01D19/08
CPCE01D19/083
Inventor 康俊涛刘焱烁陈旭丁楚志
Owner WUHAN UNIV OF TECH
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