Estimation of Undrained Bearing Capacity for Offshore Soft Foundations with Cyclic Load  

作　　者：Wang, JH Liu, YF Xing, Y Di, HM 

机构地区：[1]Tianjin Univ, Civil Sch, Geotech Engn Inst, Tianjin 300072, Peoples R China [2]Offshore Oil Engn Design Corp China, Beijing, Peoples R China

出　　处：《China Ocean Engineering》1998年第2期213-222,共10页中国海洋工程（英文版）

基　　金：This project was financially supported by the National Natural Science Foundation of China(No.59679018)

摘　　要：The degradation strength of soils under cyclic loading is studied and a method for determining the cyclic degradation strength with cyclic triaxial tests is given in the paper. Furthermore, a dum my static method for estimating the undrained bearing capacity for offshore soft foundation under wave loads is developed. It can consider the effect of the difference of cyclic stress for different parts of the foundation on both the degradation strength of the foundation soil and the bearing capacity so that the estimated result can better reflect the real condition of foundation under cyclic loading. The method can be applied to plane and space problem.The degradation strength of soils under cyclic loading is studied and a method for determining the cyclic degradation strength with cyclic triaxial tests is given in the paper. Furthermore, a dum my static method for estimating the undrained bearing capacity for offshore soft foundation under wave loads is developed. It can consider the effect of the difference of cyclic stress for different parts of the foundation on both the degradation strength of the foundation soil and the bearing capacity so that the estimated result can better reflect the real condition of foundation under cyclic loading. The method can be applied to plane and space problem.

关 键 词：offshore engineering soft foundation soil dynamics bearing capacity cyclic load 

分 类 号：P754[天文地球—海洋科学]