弹性理论法计算Hardfill坝坝体应力  

Stress analysis of Hardfill Dam body by elasticity theory

作　　者：肖兰[1] 何蕴龙[1] 李平[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：《武汉大学学报（工学版）》2009年第1期38-41,45,共5页Engineering Journal of Wuhan University

基　　金：国家自然科学基金资助项目(编号:50679058)

摘　　要：为清楚地描述Hardfill坝的坝体应力分布情况,运用弹性理论法推导了Hardfill坝在自重、上游水压力及扬压力等主要荷载作用下的坝体应力计算公式.基于无限楔体的标准解,利用圣维南原理和迭加法推导出Hardfill坝在自重及水压力下的应力计算公式;并在辛克维兹所解决的三角形渗透压力所引起的坝体应力问题的基础上,推导Hardfill坝在渗透压力作用下的应力计算方法.通过与有限元法计算结果的比较,验证了弹性理论公式对Hard-fill坝坝体应力分布描述的可靠性.In order to clearly describe the stress distribution of the Hardfill Dam body, the stress calculation expressions of dam body are ascertained under the main loads such as gravity, upstream water pressure, uplift pressure by the elasticity theory. The calculation expressions under gravitation, upstream water pressure are obtained by the Saint-Venant principle and the method of superposition based on the standard unlimited wedge solution; according to the derivation follows that given by Zienkiewicz in solving the case of triangular distribution, the calculation method is deduced under the seepage pressure. The precision of the stress distribution of the Hardfill Dam is assured by comparing with the FEM solution.

关 键 词：HARDFILL坝 坝体应力 弹性理论 渗透压力 

分 类 号：TV64[水利工程—水利水电工程]