Dynamic Behaviour of a Caisson Quaywall Under Strong Earthquake

作     者：Liu, HL Dai, HC Iai, S 

作者机构：Hohai Univ Geotech Engn Res Inst Nanjing 210098 Peoples R China China Yangtze Three Gorges Project Dev Corp Yichang 443002 Peoples R China Minist Transport Port & Harbour Res Inst Nagase 239 Japan 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：1999年第14卷第1期

页      面：47-62页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：National Natural Science Foundation of China 

主　　题：caisson quaywall effective stress analysis lique faction residual deformation 

摘      要：Effective stress analysis is performed to evaluate the residual displacement of a caisson quaywall during 1994 Hokkaido- Toho- Oki Earthquake and 1993 Kushiro- Oki Earthquake. The constitutive model used in this study is a multiple shear mechanism type defined in strain space and can take into account the effect of rotation of principal stress axis. The earthquake accelerations recorded at the outcropping rock during the earthquake are used as input bedrock motion. The results of finite element analysis are in good agreement with the observed behaviour of the quaywall. The analysis also indicates that liquefaction and high excess porewater pressure have a significant effect on the deformation of the caisson. Soil improvement is speculated as the most reliable measures against liquefaction. The influence of soil improvement and the reasonable improved area are discussed in the paper.