论文部分内容阅读
随着我国交通运输业的发展,公路交通运输量大幅度增长,行车密度及车辆载重越来越大,使得相当一部分现有公路桥梁,特别是20世纪80年代以前修建的桥梁已不能满足使用上的要求。而且,20世纪80年代以后修建的桥梁,随着运营年限的增加,也已经进入维修期。加强对公路桥梁的养护、维修、加固和改造工作,提高旧桥的承载能力和行车性能,延长其服务年限,
With the development of the transportation industry in our country, the traffic volume of the highway has increased greatly. The traffic density and the load of the vehicles have been increasing. As a result, a considerable part of the existing highways and bridges, especially the ones built before the 1980s, are no longer satisfactory Request. Moreover, bridges built after the 1980s have also entered the maintenance phase as operating age increases. Strengthen the maintenance of bridges and bridges, maintenance, reinforcement and transformation work to improve the carrying capacity of old bridges and driving performance, to extend their service life,