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《Chinese Journal of Underground Space and Engineering》 2007-06
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Application of the Theory of Optimization Back Analysis in Back Analysis of Tunnel Surrounding Rock Parameters

WU Hao,ZHANG Zi-xin,XU Ying(Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University,Shanghai 200092,P.R.China)  
Optimization back analysis is a method,which combines the method of parametric back Analysis with optimization technique,making this method more efficient.It obtains the parameters of surrounding rock by establishing an analysis process to minimize the difference between the results of numerical calculation and on-site measuring displacements,then the parameters are considered for the results of this back analysis.The whole process of parameter back analysis becomes more flexible,simple and convenient because the current optimization modules of Finite Element are transferred by the user program compiled by APDL,and the parametric models of the tunnel are also established by this user program for optimization analysis.
【CateGory Index】: U451.2
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