%0 Journal Article
%T Back Analysis on the Material Parameters of the Second Stage Cofferdam in the Three Gorges Project<br>三峡二期围堰填料参数的反分析
%A Zhang Xiaoping
%A Bao Chenggang
%A Shi Bin
%A <br>张小平
%A 包承纲
%A 施斌
%J 岩石力学与工程学报
%D 2001
%I 
%X The second stage cofferdam is one of the most important engineerings of the water conservancy construction in the Three Gorges Project. On the basis of the monitoring data, the sensitivity of material parameters of cofferdam is analyzed. The sensitive parameter to displacement of the cutoff wall can be selected as the parameters for back analysis. According to the tests, the ranges of parameter are confirmed. By use of optimum theory and finite element method, the back analysis program is developed, and the optimum parameter is found. Then, the stress and displacement of the cofferdam are computed and analyzed with the parameters. The results show that the cofferdam is safe in running state, and the computed results accord with monitoring data very well.
%K the second stage cofferdam in the Three Gorges Projects
%K sensitivity of parameter
%K optimum theory
%K back analysis<br>三峡二期围堰
%K 参数灵敏性
%K 复形法
%K 反分析
%K 填料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=C9E19856F6B3106A&yid=14E7EF987E4155E6&vid=A04140E723CB732E&iid=94C357A881DFC066&sid=507521DBC725630F&eid=8CC50269EED5BB47&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=0&reference_num=8