土体双曲线本构模型的参数反演  

Parameter back-analysis of hyperbolic constitutive model in soils

作　　者：谭昌明[1] 徐日庆[1] 龚晓南[1] 

机构地区：[1]浙江大学岩土工程研究所,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2001年第1期57-61,共5页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金重点资助项目! (5 973816 0 )

摘　　要：采用直接反分析法对土体双曲线本构模型参数 K、c、φ的反演进行了研究 ,确定实现这些参数反演时所要满足的条件 .通过一填土算例分析探讨了观测信息对参数反演结果的影响 ,并实现了双层地基上Parameter back-analysis of Duncan-Chang hyperbolic constitutive model was studied by direct analysis method. After parameter back analysis is made for single parameter and double parameters respectively, some conditions required in back analysis were proposed in order to guarantee the stability of the solutions. The effects of measurement data on back-analysis parameters are analyzed from case study of an embankment filled. The validity of proposed procedure is verified by back-analysis six parameters of double-layer ground in the case. The results demonstrate that different measured information are required for different parameters to be back analyzed, the precision of measured information and the arrangement of measured points affect the results of back analysis.

关 键 词：双曲线本构模型 直接反分析法 参数反演 

分 类 号：TU433[建筑科学—岩土工程]