循环荷载作用下软粘土的累积变形特性的研究  

Research on accumulative deformation behavior of soft clay under cyclic loads

作　　者：刘振纹[1] 秦崇仁[1] 王建华[1] 

机构地区：[1]天津大学建筑工程学院,天津300072

出　　处：《水利水电技术》2004年第11期14-17,共4页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金资助项目(50079015).

摘　　要：　研究了海洋原状软粘土的不固结、不排水动力特性,依据循环三轴试验结果,分析得出了一种描述海洋软粘土受到循环荷载作用时的累积变形的简便表达式,把软粘土的循环累积变形与其受到的静应力、循环应力以及循环次数的关系统一表示出来,为研究海洋软粘土的地基变形和承载力提供了便于应用的研究结果.The unconsolidated undrained dynamic behaviour of soft clay was studied. On the basis of cyclic triaxial tests, a reasonable means describing the accumulative deformation of soft clay under cyclic loads was suggested. By this means, the relationship of the accumulative deformation and physical parameters such as static stress, cyclic stress, number of load cycles had been expressed in an unified way. All this has furnished feasible data for researching the deformation behaviour of marine soft clay foundation and its bearing capacity.

关 键 词：海洋软粘土 累积变形 循环强度 

分 类 号：TV447[水利工程—水工结构工程]