一、前言拼装式预应力钢筋混凝土薄壁桥墩是成昆铁路修建中广大工人、战士、干部、技术人员在党的领导下,自行设计、施工的一种轻便化的新型墩台结构,经过三座不同形式大桥的实践,具有结构简单、构件类型少,可标准化预制,保证质量;模板多次倒用,材料强度利用系数高,可减少圬工60％,节约木材50％;构件预制与拼装机械化,可加快施工进度,改善 I. Introduction Prefabricated prestressed reinforced concrete thin-walled piers are a lightweight new type of piers designed and constructed by the vast majority of workers, soldiers, cadres and technicians under the leadership of the party in the construction of Cheng-Kun Railway. After three Block different forms of bridge practice, with a simple structure, a small number of types of components can be standardized prefabricated, to ensure quality; template inverted many times, the material strength utilization factor is high, can reduce labor 60%, save wood 50%; Prefabrication and assembly components Mechanization, can speed up the construction progress, improve