重力坝应力的临界能量误差限自适应有限元分析  

Analysis of critical global energy error limit of gravity dam stresses using adaptive finite element method

作　　者：张建涛[1] 李俊杰[1] 李留强[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116023

出　　处：《中国科技论文在线》2008年第7期503-510,共8页

摘　　要：本文应用自适应有限元法对重力坝应力的能量误差限进行了研究。通过对不同坝高,不同上游、下游坡比等多种形状重力坝坝体的应力分析,得出在重力坝应力分析过程中存在临界能量误差限,该误差限对不同坝体外形会有微小变化。该结果将会有助于重力坝坝体有限元应力分析和建立重力坝有限元分析标准。In this paper, the research on energy error limit of gravity dam stress analysis using adaptive finite element method （FEM） has been carried out. Through the stress analyses in many types of gravity dams with different dam height and its downstream and upstream slops the conclusion has been made that there exists a critical global energy error limit （CGEEL） in the course of dam stress analysis. Although variation of its value is slightly for various geometry of dam, the variation is small enough so that it does not affect CGEEL. It will be helpful for FEM analysis of gravity dam.

关 键 词：水工结构 能量误差限 自适应有限元 重力坝 应力分析 

分 类 号：TV31[水利工程—水工结构工程]