杨家坝大跨度简支预应力渡槽徐变效应分析  

Creep Effect Analysis of Yangjiaba Longspan Simply-supported Prestressed Aqueduct

作　　者：李柯[1] 段亚辉[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《水电能源科学》2011年第9期107-109,96,共4页Water Resources and Power

摘　　要：针对杨家坝大跨度简支预应力渡槽在长期荷载作用下单跨结构稳定、挠度是关系到渡槽安全与正常运行的问题,采用有效模量法借助有限元软件ANSYS建模,计算了渡槽槽身在假定荷载保持不变条件下由徐变引起的应力和挠度,分析了渡槽的安全稳定性。结果表明,该渡槽徐变应力和挠度均满足现行规范要求,为工程设计提供了重要参考。In view of the situation that single span structure stability and deflection is related to safety and normal operation of Yangjiaba longspan simply-supported prestressed aqueduct,effective modulus method is applied to calculate the creep deflection and stresses change of the aqueduct under the given load by using finite element analysis software ANSYS.At the same time,it analyzes the safety and stability of the aqueduct.The results show that the creep stresses and deflection of the aqueduct meet requirements of current specification,which provides important reference for engineering design.

关 键 词：渡槽 有效模量法 徐变分析 应力 挠度 

分 类 号：TV314[水利工程—水工结构工程] TV672.3