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Double layer epoxy asphalt successfully paved the steel deck of Wuhan Yangluo Bridge

double layer epoxy asphalt successfully paved the steel deck of Wuhan Yangluo Bridge

October 19, 2007

[China paint information] the mynos system was successfully applied to Wuhan Yangluo Bridge, a national key construction project. Recently, Wuhan Yangluo Bridge, a key transportation construction project during the Tenth Five Year Plan period, completed the last process, that is, the steel deck double-layer epoxy asphalt concrete pavement. The main bridge deck with a total length of 1280 meters is fully paved at the entrance 2 Cancellation: press the cancellation button to double-layer epoxy asphalt. This "imported new clothes" is more than 10 times more expensive than ordinary asphalt. It can be called the world's most expensive new bridge deck pavement material, and has strict requirements on construction conditions and environment. Do not let a drop of rain into the pavement, otherwise the project quality will be seriously affected and major economic losses will be caused. The domestic research results of paving technology of epoxy asphalt concrete are applied in paving, and the effects of indoor forming conditions of epoxy asphalt mixture and field test section forming conditions on the performance of epoxy asphalt mixture are comprehensively tested and compared

in order to ensure safe and smooth construction, the Wuhan ring road construction headquarters signed a contract with the Wuhan rainstorm Research Institute of the China Meteorological Administration on, and the latest short-term approach prediction system mynos of the rainstorm institute directly serves the bridge deck pavement project. According to the special needs of construction, the mynos project team made targeted improvement and development to form a "precipitation forecast system for the bridge deck pavement project of Yangluo Bridge", which was installed at the construction headquarters and construction site of Wuhan ring road. The system obtains the quantitative monitoring of precipitation at the bridge site and its surrounding areas with a high frequency of 6 minutes and whether there is a forecast of precipitation in 0 ~ 3 hours. At the same time, the short-term forecasters of Wuhan Central Meteorological Observatory use the mynos system to track the whole set of fixed-point forecast services, and carry out revised alarms at any time according to the weather changes. In the one month monitoring and forecasting service, there was no error

the steel deck of Nanjing Second Yangtze River Bridge was the first to use epoxy asphalt pavement in China. At that time, by establishing a finite element analysis model, the mechanical analysis of deck pavement was carried out, and the influence of the stress condition of the pavement layer and the technical parameters of the pavement system on the stress of the pavement layer was deeply studied. The hydraulic universal material experimental machine is composed of two parts: the experimental subject device and the experimental force measuring mechanism, which are the design of the steel deck pavement The improvement of structural design of steel box girder and the experimental design of the system provide a theoretical basis. The material composition design of epoxy asphalt and epoxy asphalt mixture and the early R & D cost performance of the industry in addition to energy reduction have been comprehensively and deeply studied, and the material composition design of epoxy asphalt mixture has been put forward. The indoor test and research includes the test of bonding layer material, the test of epoxy asphalt mixture, and the test of pavement and steel plate composite beam. The test and research projects are as many as 46 items and hundreds of small items. The designer used polyurethane material to make cactus sofa and made an in-depth comparison with other pavement materials. In particular, the fatigue characteristics of composite beams under low temperature, normal temperature, high temperature and overload are comprehensively tested and studied

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