基于CEL方法对T-bar测试浅层软土强度系数修正的讨论  

Discusses on the strength coefficient correction with T-bar test for shallow soft soil based on the CEL method

作　　者：魏子钧 张蓉 徐唯强 杨宇[1] WEI Zi-jun;ZHANG Rong;XU Wei-qiang;YANG Yu

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130021

出　　处：《东北水利水电》2020年第3期52-54,I0002,共4页Water Resources & Hydropower of Northeast China

摘　　要：软土强度测试是室内土工试验和现场原位测试的重要组成部分,T-bar贯入仪是一种能够简便准确得到软土不排水抗剪强度沿深度连续分布包络线的测试手段。文中基于CEL大变形计算结果,在与其他学者应用T-bar测试结果对比的基础上,验证了计算方法的可靠性;根据计算得到的T-bar系数随贯入深度的分布特点,提出了简便的修正方法,可用于T-bar测试浅层软土强度的修正。Soft soil strength test is an important part of indoor geotechnical test and in-situ test.T-bar penetrator is a simple and accurate test method to obtain the envelope of continuous distribution of undrained shear strength along the depth of soft soil.Based on the CEL large deformation calculation results,the reliability of the calculation method is verified by comparing with other scholars't-bar test results.According to the distribution characteristics of t-bar coefficient with penetration depth,a simple correction method is proposed,which can be used to test the strength correction of shallow soft soil by t-bar.

关 键 词：T-bar 浅层软土强度 系数修正 CEL方法 

分 类 号：TV221[水利工程—水工结构工程]