随着社会经济和交通运输事业的快速发展,一些年代久远的桥梁,在沉重的交通荷载及繁重的交通量的作用下,在寒冬酷暑、暴雨烈日、洪水冲刷、车船撞击的多年影响下,发生了各种大大小小的病害,有的已经威胁着过往人车的安全而成为危桥,如何加固与维修这些旧桥,提高旧桥的承载能力,确保交通运输的安全是目前和今后面临的主要任务。 With the rapid development of the socio-economic and transport industries, some old bridges, under heavy traffic load and heavy traffic, have taken place under the influence of many years of cold winter heat, torrential rains, floods and traffic shocks A variety of large and small diseases have been threatened. Some have already threatened the safety of people and vehicles in the past and become dangerous bridges. How to reinforce and repair these old bridges and enhance the carrying capacity of the old bridges so as to ensure the safety of transportation is now and in the future main mission.