文献类型：期刊文献

中文题名：土与混凝土接触面反向剪切单剪试验

英文题名：Negative shear test on soil-concrete interface using simple shear apparatus

作者：王伟[1,2];卢廷浩[2];宰金珉[3];孙斌祥[1]

机构：[1]绍兴文理学院土木工程系,浙江绍兴312000;[2]河海大学岩土所,南京210098;[3]南京工业大学岩土所,南京210009

年份：2009

期号：5

起止页码：1303

中文期刊名：岩土力学

外文期刊名：Rock and Soil Mechanics

收录：CSTPCD、、ESCI(收录号：WOS:000410408600019)、EI(收录号：20092212102257)、Scopus(收录号：2-s2.0-65749096101)、CSCD2011_2012、北大核心2008、WOS、北大核心、CSCD

基金：国家自然科学基金项目(No.50478005和No.40672183);浙江省自然科学基金项目(No.Y1080839);浙江省高校优秀青年教师资助计划(浙教办高科2008-176号);浙江省教育厅科研项目(No.20061161)

语种：中文

中文关键词：土与混凝土接触面;剪切试验;反向剪切;含水率;摩擦角;黏聚力

外文关键词：soil-concrete interface; shear test; negative shear; water content; friction angle; cohesion force

中文摘要：土与混凝土接触面的力学行为是土与结构共同作用研究中的一个主要课题。进行了17%、20%、24%共3组含水率的土与混凝土接触面正反向单剪试验,每组试验分别考虑5个法向应力和4个正向剪切比。试验结果表明,在正向剪切比和含水率一定时,接触面反向剪切破坏仍遵循摩尔-库仑破坏准则。当正向剪切比为0.50、0.75、1.00时,对应反向剪切强度分别为各自正向初始强度的90%、75%、55%,对应的反向剪切黏聚力约为初始正向剪切黏聚力的95%、80%、54%,反向剪切摩擦角约为初始正向剪切摩擦角的90%、76%、57%。试验结果可供相关工程数值分析参考。

外文摘要：Mechanical behavior of soil-concrete interface is essential to soil-structure interaction; and it is necessary to understand it properly during numerical simulation. Negative shear tests using laboratory simple shear apparatus are performed on soil-concrete interfaces with three water contents, namely 17 %, 20 %, and 24 %. Five normal stresses and four previous shear ratios are taken into accounted in each water content. Experimental data show that while water content and previous shear ratio are fixed, failure of negative sheared interfaces still satisfy the Mohr-Coulomb criterion. After experiencing shear with 0.5, 0.75 and 1.0 previous shear ratio, shear strengths of the negative sheared interfaces become 90 %, 75 % and 55 % of those of original interfaces respectively. At the same time, cohesion forces of the negative sheared interfaces become 95 %, 80 % and 54 % of those of original interfaces, and friction angles of the negative sheared interfaces become 90 %, 76 % and 57 % of those of original interfaces respectively. This experimental research is useful for relative engineering numerical simulation.