绍兴重塑粉质黏土抗剪强度特性的试验研究  

Experimental Study on Shear Strength of Remolded Silty Clay in Shaoxing

作　　者：吴瑞潜 汤有志 林群仙[2] 李少和[2] 张少龙 WU Ruiqian;TANG Youzhi;LIN Qunxian;LI Shaohe;ZHANG Shaolong(School of Civil Engineering,Shaoxing University,Shaoxing,Zhejiang 312000;Zhejiang Institute of Industrial Technology,Shaoxing,Zhejiang 312000)

机构地区：[1]绍兴文理学院土木工程学院,浙江绍兴312000 [2]浙江工业职业技术学院,浙江绍兴312000

出　　处：《绍兴文理学院学报》2020年第2期9-14,共6页Journal of Shaoxing University

基　　金：国家青年基金项目“砂土非极限位移状态动土形成机理及拟动力计算研究”(51708354);浙江省教育厅项目“非饱和土抗剪强度的预测与实验研究”(Y201839206).

摘　　要：在室内试验基础上,以绍兴重塑粉质黏土作为研究对象,通过固结快剪试验研究了黏粒含量和干密度对抗剪强度及其指标的影响.结果表明:随着黏粒含量的增加,重塑粉质黏土的抗剪强度减小,内摩擦角减小,黏聚力增大,且干密度的增加会削弱黏粒含量对土体黏聚力和内摩擦角的影响;重塑粉质黏土的抗剪强度、内摩擦角以及黏聚力均随干密度的增加而增大,但是随着黏粒含量的增加,干密度对土体黏聚力和内摩擦角的影响并不明显.On the basis of laboratory test,and taking Shaoxing remolded silty clay as the research object,the present paper studies the effect of clay content and dry density on shear strength parameters through Consolidated-Undrained Triaxial Test.Several conclusions were drawn from the test.First,the shear strength and the internal friction angle of remolded silty clay decrease,but its cohesion increases with the increase of clay content.Second,the influence of clay content on cohesion and internal friction angle are weakened with the increase of dry density.The third,the shear strength,internal friction angle and cohesion of remolded silty clay increase with higher dry density,but the effect of dry density on cohesion and internal friction angle is not obvious with the increase of clay content.

关 键 词：重塑粉质黏土 固结快剪 黏粒含量 干密度 黏聚力 内摩擦角 

分 类 号：TU442[建筑科学—岩土工程]