溢流表孔预应力闸墩结构三维有限元分析  

3D Finite Element Analysis of Prestressed Pier Structure on Surface Spillway

作　　者：姚倩[1] 任旭华[1] 张继勋[1] 杨安玉[1] 刘益锋[1] 

机构地区：[1]河海大学水利水电学院,南京210098

出　　处：《三峡大学学报（自然科学版）》2013年第1期38-42,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家科技支撑计划(2012BAB03B02);国家自然科学基金面上项目(50978083)

摘　　要：对溢流表孔闸墩结构应力分布和变形性态的了解与把握是设计中应解决的关键技术问题之一.为确保整个预应力结构在施工和运行中的安全,运用ANSYS有限元分析软件,对某水电站大坝溢流表孔预应力闸墩进行较为全面的应力、变形分析,得到了典型工况下结构的应力应变分布规律.根据计算结果,对闸墩混凝土结构的预应力效果进行评价,分析了结构重要部位的应力规律,并就预应力体系的两种不同拉锚系数设计方案进行对比分析,优化预应力体系设计.全部有限元计算结果为溢流表孔预应力闸墩结构的设计和优化提供了依据.It is a key problem to understand the stress distribution and deformation performance of prestressed pier structure on surface spillway. To ensure safety of the whole structure in construction and operation, analysis of prestressed pier structure on surface spillway of a hydropower station is carried out by using ANSYS software. Then the distribution regularity of deformation and stress on the whole structure at typical operation condition was obtained. According to the results, concrete structure＇s prestressed effect is evaluated; and the two schemes of prestressed system of different pull-anchor coefficients were compared and discussed. The results provide a scientific basis for the design and optimization of pier structure.

关 键 词：预应力闸墩 锚块 三维有限元 应力 

分 类 号：TV652[水利工程—水利水电工程]