一种新的求解坝面动水压力的半解析方法  

A new semi-analytical method for solving hydrodynamic pressure on dams

作　　者：杜建国[1] 林皋[2] 谢清粮[1] 

机构地区：[1]总参工程兵科研三所,洛阳471023 [2]大连理工大学土木水利学院,大连116024

出　　处：《振动与冲击》2009年第3期31-34,45,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金资助项目(重点项目90510018)

摘　　要：基于比例边界有限元理论,推导了综合考虑库水可压缩性和库底边界吸收的坝面动水压力方程,提出了一种新的求解坝面动水压力的半解析方法,并通过算例验证了这种方法的精度和效率。结果表明,与传统方法相比,这种方法具有精度高、计算工作量小的优点。Based on the Scaled Boundary Finite Element Method(SBFEM),an equation for calculating hydrodynamic pressure on dams was derived,it could consider effects of compressibility of water and reservoir bottom absorption.A new semi-analytical method for calculating hydrodynamic pressure was proposed.Numerical examples of a two-dimensional gravity dam were provided.It was shown that this approach is superior to conventional methods in computational efforts and accuracy.

关 键 词：动水压力 比例边界有限元法 半解析法 水的可压缩性 库底边界吸收 

分 类 号：TV312[水利工程—水工结构工程]