Deck installation structure of big-span steel bridge

A bridge deck pavement, large-span technology, used in bridges, bridge parts, bridge construction, etc., can solve problems such as insufficient service life, increase abrasion resistance, reduce vertical and horizontal horizontal deformation, and reduce cracking dangerous effect

Inactive Publication Date: 2010-11-03
SHENZHEN OCEANPOWER ENG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem of insufficient service life of the existing bridge deck pavement, the present invention provides a pavement structure, which can not only be constructed with ordinary road pavement equipment, but also can improve the quality of the bridge deck pavement layer, prolong its service life

Method used

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  • Deck installation structure of big-span steel bridge
  • Deck installation structure of big-span steel bridge
  • Deck installation structure of big-span steel bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0027] 1. Use sandblasting to remove oil and rust and thermal spray zinc on the surface of the steel bridge deck 3, and draw lines for the positioning position of the welding stud 4 according to a 30×30cm square.

[0028] 2. Weld the welding studs 4 with a specification of Φ1×5cm on the steel bridge deck 3 with a welding torch at a distance of 30×30cm along the vertical and horizontal directions.

[0029] 3. Spray waterproof adhesive layer 5

[0030] The entire steel bridge deck surface was sprayed with an acrylic-based paint finish in three coats.

[0031]

Cement kg

Finely ground slag powder kg

Light aggregate kg

polymer kg

Mixing water kg

First group

180

350

1050

100

182

Second Group

180

350

1080

80

185

The third group

180

350

1120

60

190

Fourth group

200

350

1110

45

196

fifth group

220

350

1110

...

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PUM

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Abstract

The invention relates to a floor laying structure of large-span steel bridge, wherein it comprises: panel, waterproof adhesive layer, transition layer, waterproof adhesive layer and pitch laying layer; said transition layer uses polymer cement concrete; the pitch laying layer uses polymer modified pitch concrete; the transition layer is irrigated on the panel with welding nails; the surface of transition layer near to the pitch laying layer has longitudinal and transverse anti-slide grooves; the transition layer can reduce the flexible modulus difference interlayer, to reduce the steering stress and improve the adhesive strength between layers; the welding nails and the anti-slide grooves can improve the friction resistances of laying layer, reduce the horizontal deformation of maximum stress area, and avoid horizontal displacement.

Description

【Technical field】 [0001] The invention relates to a road pavement structure, in particular to a bridge deck pavement structure. 【Background technique】 [0002] At present, the bridge deck pavement structure of long-span steel bridges is formed by laying a waterproof adhesive layer and asphalt concrete pavement layer on the steel bridge. The pavement layer generally adopts SMA (asphalt horseshoe grease) and The three methods of epoxy asphalt and pouring, the main disadvantages are that the service life is not long and it is not suitable for heavy loads, etc. The main disease characteristics are vertical and horizontal movement and cracking. In order to increase the crack resistance of the pavement itself, in addition to the development of asphalt concrete materials with good performance, polymer fibers are often mixed into asphalt concrete. Due to the large deformation and deflection of the long-span steel bridge deck structure under load, the existing bridge deck pavement s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12
Inventor 何唯平张起森汤惠工王卉王辉蔡长峰李雪莲
Owner SHENZHEN OCEANPOWER ENG TECH
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