Asphalt concrete steel bridge pavement structure and pavement method thereof

A technology for asphalt concrete and steel bridge decks, which is applied in bridges, bridge parts, bridge construction, etc. It can solve the problems of insufficient shear resistance of concrete, low viscosity of ordinary modified asphalt, and easy shifting, etc., to solve the problem of interlayer bonding problems, reduce pavement damage, and dry quickly

Active Publication Date: 2013-04-03
SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of interlayer bonding between ordinary SMA concrete and steel plates cannot be ideally solved. Ordinary modified asphalt has a low viscosity, resulting in insufficient shear resistance of concrete and prone to shifting.
SMA concrete needs vibration rolling at the same time, and it is very easy to cause insufficient compaction under the condition of bridge deck resonance, which will cause early diseases.

Method used

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  • Asphalt concrete steel bridge pavement structure and pavement method thereof
  • Asphalt concrete steel bridge pavement structure and pavement method thereof
  • Asphalt concrete steel bridge pavement structure and pavement method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] The preparation method of the modifier is as follows: 50% to 60% by weight of styrene-butadiene-styrene triblock copolymer, 12% to 41% by weight of petroleum resin, 0% to 26% Diatomaceous earth roasted products in weight percentage and 0-3% weight percentage of auxiliary agents are mixed evenly in a high-speed mixing equipment, and then mixed with 8%-37 weight percentage of aromatic oil, and extruded through a screw extruder , Cut into pellets, control the extrusion temperature at 120-200°C, and make it after cooling.

[0057] The aggregate consists of coarse aggregate and fine aggregate.

[0058] In the aggregate, the coarse aggregate (referring to the aggregate retained above the 4.75mm square hole sieve) is diabase, basalt or limestone; the fine aggregate (referring to the aggregate that can pass through the 4.75mm square hole ) is limestone;

[0059] The filler is limestone powder.

[0060] In the high-viscosity asphalt embedded compact graded concrete with a nom...

Embodiment

[0074] Steel bridge deck asphalt concrete pavement, consisting of bottom-up steel deck derusted by sandblasting 7, epoxy zinc-rich paint anti-corrosion layer 6, epoxy asphalt waterproof bonding layer 5, stone chip layer 4, nominal maximum The lower layer 3 of high-viscosity asphalt embedded densely graded concrete with a particle size of 16mm, the emulsified asphalt adhesive layer oil 2, and the upper layer 1 of high-viscosity asphalt embedded densely graded concrete with a nominal maximum particle size of 13.2mm. Epoxy asphalt waterproof bonding layer 5 is 0.8-1.0mm thick, high-viscosity asphalt embedded densely graded concrete lower layer 3 is 50mm thick, emulsified asphalt adhesive layer oil 2 is thick 0.8-1.0mm, high-viscosity asphalt embedded compacted graded compounding Congeal the above soil 1 thick 40mm.

[0075] The lower layer of high-viscosity asphalt compacted compacted graded concrete with a nominal maximum particle size of 16 mm (abbreviated as PRAC-16, the same ...

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Abstract

The invention discloses an asphalt concrete steel bridge pavement structure comprising a steel bridge (7) derusted by sandblast, an anticorrosive coating (6), a binding layer (5), high-viscosity asphalt embedded compact granular composition concrete bottom layer (3), an oil sticking layer (2) and a high-viscosity asphalt embedded and compact granular composition concrete top layer (1) which are arranged from bottom to top; and furthermore, the invention also provides a pavement method of the asphalt concrete steel bridge pavement structure. According to the asphalt concrete steel bridge pavement structure, the high-viscosity asphalt embedded compact granular composition concrete layers are used as main pavement layers, so that concrete has favorable interlayer binding force and deformation following performance, the generation of cracks can be restrained, so that the whole steel bridge pavement structure has the advantages of favorable track resistance and water seepage resistance.

Description

technical field [0001] The invention belongs to the field of road and bridge engineering, in particular, the invention relates to an asphalt concrete steel bridge deck pavement structure and a pavement method thereof. Background technique [0002] Steel box girders are widely used due to their unique advantages such as large span, light weight and convenient construction. Compared with ordinary road pavement and cement concrete bridge deck pavement, steel bridge deck pavement has more severe service conditions, so it also puts forward higher requirements: first, the pavement layer should have good road performance, high and low temperature Stability and water stability and water resistance, etc.; in addition, the steel plate has good heat transfer, and it is easy to deform and generate shear force during construction at high temperature. It is required that the pavement layer has good flexibility and deformation tracking ability. Repeated deformation requires higher adhesio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/12E01D21/00
Inventor 赫振华闫国杰刘钢徐韵淳李交胡睿夏庆宇邱轶
Owner SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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