位移反分析有限元网格划分范围的研究  

STUDY ON RANGE OF MESH ABOUT FINITE ELEMENT FOR BACK ANALYSIS OF DISPLACEMENT

作　　者：吕爱钟[1] 蒋斌松[1] 尤春安[1] 

机构地区：[1]山东矿业学院

出　　处：《土木工程学报》1999年第1期26-30,共5页China Civil Engineering Journal

基　　金：煤炭高校跨世纪学术带头人培养基金

摘　　要：在初始地应力和岩石性质参数已知的情况下，利用平面弹性复变方法获得了深埋地下洞室的位移解析解。在使用有限单元法进行位移反分析时，将此位移视作为“实测位移”。给定不同大小的有限元网格划分范围，可以反算出不同的初始地应力和岩石性质参数，将此结果与给定的已知值进行比较，即可确定满足精度要求的有限元网格划分范围。As the in - situ stress and Young's modulus and Poisson ratio of rock are known, the analytic solution of displacement for nuderground tunnel is obtained by means of plane elastic complex variable method. This displacement is regarded as the 'measured displacement' for back analysis. If the given range of mesh about finite element for each example is different, the in situ stress and Young's modulus and Poisson ratio obtained by back analysis for each example is also different. The calculated results are then compared with the given known values, thus the range of mesh can be determined to meet the requirement of precision.

关 键 词：位移反分析 地下洞室 位移 有限元 网格划分范围 

分 类 号：TU457[建筑科学—岩土工程]