水道港口2016，Vol.37Issue(3)：298-305,8.
循环荷载下滨海软粘土累积塑性应变试验研究
Experimental research on cumulative plastic strain of littoral soft clay under cyclic loading
摘要
Abstract
Under the cyclic loading such as waves, the excessive settlement and deformation of soft clay affects the stability of the upper structure. Cyclic triaxial tests on muddy clay from Yantai Port were performed, and then the cumulative plastic strain variation of littoral soft clay under multiple factors, such as confining pressures, devia⁃tor stresses, dynamic stresses and cycle times, have been studied. It has been found that the cumulative plastic strain increases with the increase of cycle times, and it′s fast at the beginning, then slows down, finally achieves sta⁃bility. The cumulative plastic strain is not influenced by the confining pressures obviously, but with a larger deviator stress ratio and a larger dynamic stress ratio, its initial growth is larger, and its final stable value is larger. Accord⁃ing to the test results, a hyperbolic model of the cumulative plastic strain under multiple factors, such as confining pressures, deviator stresses, dynamic stresses and cycle times, has been put forward. Then the model was applied in⁃to Yantai Port engineering, and the results consisted with the engineering.关键词
软粘土/循环荷载/累积塑性应变Key words
soft clay/cyclic loading/cumulative plastic strain分类
建筑与水利引用本文复制引用
王元战,胡珅榕,杨攀博..循环荷载下滨海软粘土累积塑性应变试验研究[J].水道港口,2016,37(3):298-305,8.基金项目
国家自然科学基金（51279128）；国家自然科学基金创新研究群体科学基金（51321065）；交通运输部交通建设科技项目 （）
