角木塘水电站预应力闸墩三维有限元分析与配筋方案研究  

3D Finite Element Analysis and Reinforcement Design on Prestressed Piers of the Jiaomutang Hydropower Project

作　　者：王竞[1] 何蕴龙[1] 白新革 

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,武汉430072

出　　处：《中国农村水利水电》2017年第8期170-176,共7页China Rural Water and Hydropower

摘　　要：采用三维有限元数值分析方法,对多种荷载组合作用下墩体结构的受力特性进行数值模拟,得到典型工况下中墩的结构变形、预应力锚固区应力、锚块应力、预留平孔周边应力变形规律,以及拉应力分布区随工况荷载条件的变化规律,并针对预应力闸墩中的薄弱部位研究合理的初始配筋方案。研究结果表明预应力闸墩预应力效果良好,锚索布置合理,在各种荷载组合效应下整个墩体的应力和变形分布满足设计要求。研究成果不仅对优化预应力混凝土闸墩的结构设计和锚索布置方案具有重要作用,也可为同类工程的设计和安全性评价提供重要参考。Three-dimensional finite element numerical analysis method is used to simulate the mechanical behavior of the pier structure under the combined action of multiple loads. The structural deformation of the middle pier,prestressed anchorage zone stress,the law of stress and deformation around the flat hole and the change rule of the tensile stress distribution condition with the load condition are studied. The reasonable initial reinforcement scheme is studied according to the weak position of the prestressed pier. The results show that prestressed concrete piers have a good effect and the cable arrangement is reasonable. The stress and deformation distribution of the whole pier meet the design requirements under various load combination effects. The research results of this paper not only play an important role in the optimization of the structure design of prestressed concrete pier and the layout scheme of cables,but also provide an important reference for similar engineering design and safety evaluation.

关 键 词：角木塘水电站工程 预应力闸墩 应力变形分析 配筋方案 

分 类 号：TV314[水利工程—水工结构工程]