摘要
本文提出了地震作用下有横缝高拱坝的动接触模型， 并对这一强非线性模型进行数值计算． 该动态接触模型是基于有伸缩横缝拱坝在地震作用下其响应所呈现的非线性摩擦接触特性， 应用接触力学分析方法建立的， 能够充分地反映高拱坝横缝的张开闭合摩擦力学过程的分析模型． 结果表明， 采用本模型的计算效率较高、收敛性有保证， 结果合理、可靠．
Based on the method of contact mechanic,a dynamic contact model for high arch dams with contraction joints under earthquake excitation is estabilished and the corresponding numerical solution of penalty for the method is proposed.In this model the opening and closing of joints as well as their frictional reaction are modeled by contacting boundary surfaces and the rigrous contact constraints are considered so that this model can describe the dynamic response of joints precisely.The explicit integration and penalty method,which is compatible with the explicit operators,is adopted.The applicability of the algorithm is illustrated by numerical calculations of two expales.
出处
《水利学报》
EI
CSCD
北大核心
1999年第12期17-22,共6页
Journal of Hydraulic Engineering
关键词
高拱坝
横缝
动态接触模型
数值计算
high arch dam,vertical contraction joint,dynamic contact model,penalty method,explicit operators.
