我国建筑石拱桥历史悠久、为数很多,不论在结构型式上,或在设计技巧上,均有其独特的优点。江南一带的旧石拱桥更以其结构轻巧、造型美观而闻名。近年来,在我国公路桥梁建设中本着就地取材,因地制宜的原则,修建了大量的圬工拱桥,为国家节约了大批钢材。同时还改造、利用了不少旧石拱桥;在旧桥利用的过程中,发现拱圈单薄的旧拱桥,其安全通过能力大大超过用现行设计方法所求得的吨位。为了探明实腹拱桥承载潜力的所在,以便改进设计方 China’s stone arch bridge has a long history, a large number, both in the type of structure, or in the design skills, have their own unique advantages. The old stone arch bridge in the south of Yangtze River is famous for its compact structure and beautiful appearance. In recent years, in our country highway bridge construction in line with local materials, according to local conditions, built a large number of artificial Gongqiao, saving a large number of steel for the country. At the same time also transform, use a lot of old stone arch bridge; in the process of using the old bridge, found the arch arch thin old arch bridge, its safety through capacity greatly exceeds the tonnage obtained by the current design method. In order to ascertain the load carrying capacity of the actual abdominal arch bridge, in order to improve the design side