甬江斜拉桥索塔锚固区应力分析  

Stress Analysis of Anchorage Zone of Pylon for Yongjiang Cable-stayed Bridge

作　　者：王存国[1] 刘兆丰[1] 赵人达[1] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031

出　　处：《公路工程》2009年第6期135-139,152,共6页Highway Engineering

摘　　要：大跨度斜拉桥索塔常采用预应力混凝土结构,在强大拉索力和预应力共同作用下,索塔锚固区受力十分复杂。针对索塔锚固区的受力研究,对优化锚固区构造及优化预应力钢束布置有重要意义。运用有限元方法对索塔锚固区进行了空间应力分析,总结了锚固区受力特点,为设计和施工提供了依据。Prestressed concrete pylons are usually used in Long span cable -stayed bridges. Under the cable forces and prestress, the mechanical conditions in the cable anchorage zone are extremely complicated. Theoretical study on the force of the anchorage zone of pylon is important for optimation of the structure and the arrangement of prestressed tendons in the anchorage zone. The spatial stress distribution of the cable anchorage zone is analysed by finite element method. The forcing behaviors of the anchorage zone are summarized. The results can be referenced to design and construction.

关 键 词：桥塔锚固区 预应力钢束 局部应力分析 有限元仿真 

分 类 号：TU311.1[建筑科学—结构工程]