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A Composite Rubber Asphalt Concrete Steel Bridge Deck Pavement Structure

An asphalt concrete and compound rubber technology, applied in bridges, bridge construction, bridge parts, etc., can solve problems such as longitudinal cracking and high temperature shifting, and achieve the effects of extended life, low engineering cost and outstanding durability.

Active Publication Date: 2016-01-13
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a composite rubber asphalt concrete steel bridge deck pavement structure, which can be applied to orthotropic steel plate steel box girder bridge deck pavement, the pavement structure can solve the high temperature stability of the asphalt concrete pavement system, The contradiction between the anti-fatigue longitudinal cracking ability and deformation coordination, avoiding the problems of high temperature movement and longitudinal cracking that are prone to occur in orthotropic steel plate asphalt concrete pavement

Method used

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  • A Composite Rubber Asphalt Concrete Steel Bridge Deck Pavement Structure
  • A Composite Rubber Asphalt Concrete Steel Bridge Deck Pavement Structure
  • A Composite Rubber Asphalt Concrete Steel Bridge Deck Pavement Structure

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Embodiment 1

[0039]A steel box girder bridge deck pavement project in Guangdong Province is an orthotropic steel box girder bridge. It was first built in 1987. The thickness of the orthotropic steel plate is only 12mm. Compared with the newly built steel bridges in recent years, the thickness The thickness of the bridge deck is 4mm thinner, resulting in greater flexibility of the bridge deck, and greater stress unevenness of the asphalt concrete pavement layer on the deck. The project has an average daily natural traffic volume of 45,000, which belongs to the heavy traffic and tropical marine type. The daily average maximum temperature is 30.7 degrees, and the average minimum temperature is 10.8 degrees. The extreme maximum temperature in the past 50 years is 38.7 degrees, and the extreme minimum temperature is -1.0 degrees, the daily maximum The rainfall is 503.3mm, and the relative humidity is about 85%. From the perspective of climatic conditions, the local temperature and humidity are ...

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Abstract

The invention relates to a composite rubber asphalt concrete steel bridge surface pavement structure which sequentially consists of the following structure layers from a steel bridge to a surface layer: an adhesive waterproof layer and fine particle type dense composite rubber asphalt concrete, wherein the total pavement thickness of the adhesive waterproof layer and the fine particle type dense composite rubber asphalt concrete is 6-7cm. According to the optimized design of structure combination, the balance of sliding resistance, bending resistance and high-temperature shearing resistance are mainly considered on the surface layer, the surface layer is made of a medium particle type material, the compaction, the high-temperature shearing resistance and deformation compliance are mainly considered on a lower layer, and the lower layer is made of a fine particle type material. According to the technical scheme, the composite rubber asphalt concrete steel bridge surface pavement structure has a high high-temperature property, high crack resistance and the compaction, the adhesive waterproof layer has high pull strength, and the shear translation damage to a asphalt concrete layer under the action of the vehicle load can be effectively avoided.

Description

technical field [0001] The invention is mainly applied to the pavement structure of the steel box girder bridge deck, and is specially designed to alleviate the longitudinal cracking and high-temperature moving damage of the orthotropic steel plate asphalt pavement of the steel bridge deck, and belongs to the field of transportation engineering. Background technique [0002] The design of bridge deck pavement structure and materials is an interdisciplinary engineering application technology research between bridge structural engineering and pavement structural engineering. Orthotropic steel plate steel box girder bridge is widely used in bridge construction due to its light weight, high strength, reasonable bending stress diagram and small shear stress. my country has built Sutong Bridge, Hangzhou Bay Bridge and other large bridges All adopt this structure, but the use of orthotropic steel plates makes the asphalt concrete pavement paved on it have more complex stress and def...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/12
Inventor 王旭东周兴业张蕾曾峰肖倩张晨晨张宇贾磊
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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