防灾减灾工程学报2013，Vol.33Issue(1)：18-22,5.
饱和砂土的渐近状态力学特性试验研究
Experimental Study on Asymptotic State Property of Saturated Sand
摘要
Abstract
Through GDS Multifunctional Static Triaxial Apparatus, partial drained triaxial tests on saturated sand are carried out by controlling the strain increment ratio of soil samples. Through analyzing the experimental results of excess pore pressure, effective stress paths and stress-strain relation, asymptotic properties of saturated sand are studied. Research indicates; when sand is loaded on ordinary triaxial conditions by keeping constant strain increment ratio, effective stress ratio of saturated sand also tends to be a constant and forms a asymptotic state. At the same time, the asymptotic stress ratio decreases with strain increment ratio increasing. Based on dilatancy property of soil, physics mechanisms of forming the asymptotic states are presented. Test results of asymptotic stress ratio of Beijing saturated sand under part drainage condition are given.关键词
饱和砂土/部分排水/渐近状态/应变增量比Key words
saturated sand/part drainage/asymptotic states/strain increment ratio分类
建筑与水利引用本文复制引用
路德春,程星磊,杜修力..饱和砂土的渐近状态力学特性试验研究[J].防灾减灾工程学报,2013,33(1):18-22,5.基金项目
国家973计划项目(2011CB013600)、教育部博士点基金项目(20101103110011)资助 （2011CB013600）
