TAF环氧沥青铺装在虎门大桥维护应用效果后评估

Post Evaluation on Application Effect of TAF Epoxy Asphalt Concrete Pavement in Humen Bridge

以虎门大桥钢桥面铺装重置为背景,通过荷载试验跟踪评估TAF环氧沥青铺装层在虎门大桥应用的后期使用效果,重点论述新铺装层对正交异性钢桥面系局部应力及变形的改善效果,其中应力改善效果主要关注构件与构件连接部位的应力变化情况。通过对钢箱梁关键构件及重点部位在不同荷载工况及铺装状况下的测试及结果对比分析,了解不同使用条件下钢箱梁的应力及变形状况,充分了解新铺装方案对钢箱梁受力及变形改善的效果,以综合评定TAF环氧沥青铺装层的使用效果。

Being based on the steel deck pavement reconstruction of Humen Bridge,through the load test, the usage results of TAF epoxy asphalt concrete pavement after the application in Humen Bridge has been evaluated. the effect of new pavement to improve the stress and deformation of the orthotropic steel bridge deck system has been mainly discussed, while the improvements of stress have been focused on the stress changes of component parts and the structural connections. Through test results and comparative analysis on the key component and parts of steel box girder under different load condition and pavement, the stress and deformation of steel box gird- er under different conditions have been obtained. Through full understanding of improving effect of the new pavement scheme to the stress and deformation of steel box girder, the usage results of TAF Epoxy Asphalt Concrete Pavement have been comprehensive evaluated.