卸荷对高应力下粘土力学性质的影响  

TESTING STUDY ON THE CLAY SOIL′S UNLOADING PROPERTIES UNDER HIGH STRESS

作　　者：刘明[1] 黄茂松[1] 马金荣[2] 

机构地区：[1]同济大学地下建筑与工程系,上海200092 [2]中国矿业大学建筑与工程学院,徐州221008

出　　处：《工业建筑》2005年第8期71-74,共4页Industrial Construction

摘　　要：随着地下工程建设规模的深入与扩大,高应力下土体在卸荷状态下的力学特性研究具有越来越重要的意义。通过对重塑粘土试样进行一系列的K0固结后卸除围压或轴压剪切试验,探讨并总结了关于卸荷应力路径下粘性土变形过程与强度变化关系,为工程建设提供可靠依据。With the development of underground engineering, it＇s more and more important to the research on soils＇ unloading mechanical properties under high stress. On the basis of plenty of shear tests with clays unloading confining pressure or axial compression after consolidation, the conclusions of the relationship between clay deformation process and the change in strength under unloading stress path are drawn and explored, which provides a reliable basis for projects.

关 键 词：高应力 粘性土 卸荷 应力路径 土力学性质 卸荷状态 建设规模 地下工程 特性研究 剪切试验 

分 类 号：TU442[建筑科学—岩土工程]