Structure of felting bridge floor made from steel box girder in large span

A bridge deck pavement and steel box girder technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems that endanger the safety of high-speed driving and affect the service life of steel bridge decks, achieve small overall modulus, and improve high temperature stability Good performance and anti-fatigue performance, strong deformation adaptability

Inactive Publication Date: 2005-01-12
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Premature high-temperature rutting, lateral pushing, cracking and other diseases of the steel bridge deck pavement not only enda...

Method used

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  • Structure of felting bridge floor made from steel box girder in large span
  • Structure of felting bridge floor made from steel box girder in large span

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Epoxy asphalt binder:

[0024] Epoxy asphalt binder consists of component A (epoxy resin) and component B v (asphalt) consists of two parts. The technical requirements of the two components are as follows.

[0025] technical indicators

skills requirement

experiment method

Viscosity (25℃) / cP

100～160

ASTM D 445

Epoxy Equivalent (grams of material containing 1 gram of epoxy)

185～192

ASTM D 1652

Color / Gardner (Gardner)

≤4

ASTM D 1544

Moisture content / %

≤0.05

ASTM D 1744

Flash point / °C

≥200

ASTM D92

specific gravity

1.16～1.17

ASTM D 1475

Exterior

transparent amber

visually

[0026] technical indicators

skills requirement

experiment method

Acid value (KOH per gram) / mg

40～60

ASTM D664

Flash point (Cleveland open cup) / ℃

≥200

ASTM D92

Moisture content / %

≤0.05

ASTM D95

...

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PUM

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Abstract

This invention is a structure of long span steel beam and its pave method. It is especially use to pave the bridge directly with the different nature steel plate on the bridge surface. This structure is: the higher layer is epoxy pitch cement, lower layer is pouring pitch cement, on the steel beam bridge surface is water-proof layer, on the layer is lower binding layer, on the lower binding layer is pouring pitch cement layer, on the layer, is higher binding layer, on the layer is epoxy pitch cement. The steps of pavement are: a) Sprinkling water-proof layer on the cleaned and anti-corroded steel bridge surface plate; b) Sprinkling lower binding layer; c) Spread out the mixture pitch materials on; d) Sprinkling higher binding layer; e) Spread out higher layer of epoxy pitch cement; f) When the degree of solidify intensity of epoxy pitch cement reach to 85%, the natural maintained for the steel bridge surface sprinkling are finished.

Description

technical field [0001] The invention relates to a long-span steel box girder bridge deck pavement structure, in particular to a bridge deck pavement structure directly laid on orthotropic steel plates, belonging to the technical field of transportation engineering. Background technique [0002] With the rapid growth of my country's economy, a number of long-span highway bridges across rivers and seas have started construction one after another, and have been completed and opened to traffic one after another. In the history of bridge construction in my country, there has been an unprecedented upsurge in the construction of long-span bridges. Among them, the orthotropic steel bridge deck system has been more and more used due to its light weight and economy. [0003] Researches at home and abroad show that the stiffened steel box girder is one of the effective main girder structures, and it is an ideal structural system in terms of its strength and we...

Claims

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Application Information

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IPC IPC(8): E01D19/12
Inventor 黄卫程刚杨军王晓王建伟钱振东陈先华张磊
Owner SOUTHEAST UNIV
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