在村镇规划建设特别是山丘区的村镇建设中,连接道路的桥涵较多,为便于就地取材,节省大量的钢材和水泥,有利于群众自筹自办,一般情况下桥涵多采用拱桥型式。 拱桥是一种主要承受压力的超静定结构,它的各部尺寸计算往往比较麻烦,而大多数村镇建设助理员 In the construction of villages and towns, especially in the construction of hills and villages, there are many bridges and culverts connecting the roads. In order to facilitate local use and save a lot of steel and cement, it is good for the masses to help themselves. Generally, . The arch bridge is a kind of statically indeterminate structure that is mainly under pressure. It is often troublesome to calculate the dimensions of various departments. However, most of the township construction assistants