EPS颗粒混合轻质土动强度特性对比研究  

Comparative researches on dynamic strength properties of lightweight clay-EPS beads soil

作　　者：周云东[1,2] 何奇宝[1,2] 丰土根[1,2] 陆睿 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学岩土工程科学研究所,江苏南京210098 [3]南京环力建设工程有限公司,江苏南京210036

出　　处：《河海大学学报（自然科学版）》2008年第6期810-813,共4页Journal of Hohai University(Natural Sciences)

基　　金：国家自然科学基金(50479020);教育部留学回国人员科研启动基金(2007599912)

摘　　要：通过室内动三轴试验对黏土和黏土与EPS颗粒混合轻质土(LCES)在动荷载作用下的强度特性进行了对比研究.试验结果表明:LCES的动强度随着水泥质量分数的增大而增大,随着EPS颗粒质量分数的增大而减小,当水泥质量分数达到10%以上时,其动强度就超过黏土;EPS颗粒质量分数越大,水泥对LCES的动强度的影响越小;LCES和黏土的动强度都随着围压的增大而增大,但黏土的增幅比LCES略大.Through the laboratory dynamic triaxial tests the comparative researches were performed on the dynamic strength characteristics of soft clay and lightweight clay-EPS beads soil（LCES） under dynamic loads. The test results indicate that the dynamic strength of LCES increases with the increase of the cement content, and it decreases with the increase of EPS content and is larger than that of the soft clay when the cement content exceeds 10%. The larger the EPS content, the smaller influence of cement content on the dynamic strength. The dynamic strengths of the soft clay and LCES both increase with the increase of the confining pressures, but the strength increment of the former is a bit larger than that of the latter.

关 键 词：黏土 EPS颗粒 轻质土 动强度特性 

分 类 号：TU441.3[建筑科学—岩土工程]