Pavement structure of steel bridge deck and construction method thereof

A technology of steel bridge deck and pavement structure, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of lack of pathological characteristics, poor tolerance, poor stability, etc., and achieve the effect of convenient construction and high efficiency

Pending Publication Date: 2019-04-09
广州珠江黄埔大桥建设有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the inconsistency of the mechanical analysis, calculation theory and method of the orthotropic steel deck pavement system, the difference in the material properties of the mixture used in the pavement, and the comprehensive influence of load, construction and environmental conditions, the design theory is not perfect
Lack of design methods for research on pathological characteristics cannot prescribe the right medicine
[0004] In the construction of steel bridge deck pavement, there are the following problems: epoxy asphalt concrete is mostly used in China at this stage, and epoxy asphalt adhesives and binders required for waterproof adhesive layers and surface

Method used

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  • Pavement structure of steel bridge deck and construction method thereof
  • Pavement structure of steel bridge deck and construction method thereof
  • Pavement structure of steel bridge deck and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This example focuses on the main causes of steel bridge deck pavement damage, such as incomplete design considerations, improper construction management and control, and poor operating environment, through the analysis of pathological characteristics of steel bridge deck pavement damage and problems in pavement structure design, construction, and maintenance. According to research, a steel bridge deck pavement structure is provided. The pavement structure is to sequentially lay the first waterproof adhesive layer 102, the modified epoxy asphalt macadam layer 103, and the second waterproof layer on the steel plate surface of the steel bridge deck 101. Adhesive layer 104, ultra-high performance structural layer 105. The combined pavement structure has the characteristics of clear structural function, stable and durable material performance, excellent performance, convenient construction and maintenance conditions, and obvious advantages in economic and technical indicators...

Embodiment 2

[0099] The present embodiment provides a construction method of a pavement structure of a steel bridge deck, the construction method comprising the following steps:

[0100] 1. Construction of the first waterproof bonding layer and modified epoxy asphalt macadam layer

[0101] (1) The surface of the steel plate on the steel bridge deck is sandblasted and shot blasted to Sa2.5, dust removed, dry, and pollution-free. The first waterproof bonding layer (modified epoxy resin 1, curing agent quality) shall be constructed within 4 hours after the above steel plate is treated. The ratio is 45-55:55-45) to ensure air isolation.

[0102] The construction methods of the first waterproof adhesive layer include mechanical spraying or brushing with a roller brush at 1.5kg / m 2 .

[0103] (2) After the modified epoxy resin 1 (modified epoxy resin main agent component and the curing agent component used in conjunction with the mass ratio is 45-55:55-45) is sprayed, the obtained first waterp...

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Abstract

The invention provides a pavement structure of a steel bridge deck and a construction method thereof. the pavement structure of the steel bridge deck comprises a first waterproof bonding layer, a modified epoxy asphalt macadam layer, a second waterproof bonding layer and an ultra-high performance structural layer which are sequentially paved on the surface of a steel plate of the steel bridge deck; the ultra-high performance structural layer is a pavement structural layer taking polymer modified asphalt as an adhesive, or comprises a pavement structural layer taking the polymer modified asphalt as the adhesive and a third waterproof bonding layer; the second waterproof bonding layer and the third waterproof bonding layer are the layers formed by at least one material of epoxy emulsified asphalt, polymer modified asphalt and polymer modified emulsified asphalt. The pavvement structure of the steel bridge deck provided by the invention has better resistance and stability.

Description

technical field [0001] The invention belongs to the technical field of steel bridge deck design, construction, maintenance and repair, and in particular relates to a pavement structure of a steel bridge deck and a construction method thereof. Background technique [0002] The main girder structure of the long-span cable load-bearing structure bridges built in my country basically adopts orthotropic steel panels and thin-layer pavement to form the bridge traffic system structure. The orthotropic steel deck structure has the problems of different elastic properties in the horizontal and vertical directions, and differences in the stiffness of the deck at different positions in the same direction, which affects the stiffness and deformation of the steel deck deck. higher requirements. Moreover, in our country, due to improper use conditions or problems in design and construction, the steel bridge deck pavement has cracks, oil spills, wrapping, rutting, looseness, shifting, del...

Claims

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Application Information

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IPC IPC(8): E01D19/12E01D21/00
CPCE01D19/125E01D21/00
Inventor 张少锦刘先淼邓志华王勇
Owner 广州珠江黄埔大桥建设有限公司
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