摘要
以往混凝土防渗墙的应力分析中，大多采用结构力学方法或有限元计算方法，前者与原型观测有较大差异，甚至出现相反的结论；后者虽有所改进，但结果却偏大，因而只可作定性分析。分析表明，混凝土防渗墙是处在受压状态，最大应力发生在墙深１／２～１／３处；坝体及坝基存在着拱效应，减小了墙的荷载。在此基础上提出了计算模型与假定。
The structural mechanics and finite element methods have been generally used in the stress analysis of concrete diaphragm wall. The results from the former could be a big difference from that of actual observation on prototype, or even gain a complete opposite conclusions. Although the latter method has been improved, the analysis results would be a little big than actual observations so that it could be only for qualitative analysis. It is shown that the concrete diaphragm wall is in pressured state; the maximum stress happens between one-second and one -third of wall depth and dam body and darn foundation exist arch effect which will reduce the load of wall. Model and assumption were put forward on these basses.
出处
《水力发电》
北大核心
1995年第7期18-22,共5页
Water Power
关键词
混凝土
防渗墙
有限元
应力特性
拱效应
Concrete diapragm wall, finite element analysis, stress characteristics, arch effect
