取土卸荷形成的似超固结度对强度的影响  

The Influence on Strength by QOCR Due to Soil Unloading

作　　者：李家平[1] 李永盛[1] 高大钊[1] 

机构地区：[1]同济大学地下建筑与工程系,上海市200092

出　　处：《勘察科学技术》2005年第1期6-9,共4页Site Investigation Science and Technology

摘　　要：该文分析了取土卸荷过程的应力路径及该过程引起土样的似超固结度对测试强度的影响,从理论上推导了根据室内试验数据确定原位土天然强度的公式,给出了理论公式中参数的获取方法,并对该参数进行了敏感性分析。Stress path and influence on strength by QOCR induced during soil unloading were analyzed in this paper. Based on relative theory, an equation is deduced to determine original strength by using laboratory experiment. Methods of how to get the parameter of the equation are given. Sensitivity of the parameter is also discussed.

关 键 词：卸荷 固结度 天然强度 应力路径 土样 室内试验 理论公式 取土 敏感性分析 

分 类 号：TU41[建筑科学—岩土工程]