侧向减载土体变形的平面应变试验  

TEST STUDY OF REAL THREE AXLE ON CROSSRANGE UNLOADING DEFORMATION OF CLAY

作　　者：史萍[1] 何世秀[1] 范东凯[1] 

机构地区：[1]山东理工大学建筑工程学院,山东淄博255049

出　　处：《工业建筑》2009年第6期88-91,104,共5页Industrial Construction

基　　金：湖北省自然科学基金项目(编号:2002AB001);湖北省教育厅项目(编号:2002A00015)

摘　　要：卸荷工程在实际中经常遇到,保持大主应力不变,减小小主应力是实际工程中可能存在的一种应力路径。针对武汉地区具有代表性的粉质黏土进行了真三轴试验,在分析大量试验数据的基础上,对其平面应变条件下的应力-应变关系、体应变-轴应变关系及反映侧向变形的泊松比进行了研究,完善了实用性强的适合于减P路径的饱和黏性土变形理论,为寻求开挖工程研究对实体工程的实用性奠定了基础。Unloading engineering is often met as a matter of fact, and the path of keep major stress-strain invariant and minor stress-strain reduced exist indeed in all the sress pathes. A series of experimental researches on the deformation character were made about typical clay in Wuhan and on the base of analysis of a great number of experiments the study were made on the relation of stress-strain, volume strain-axle strain and parameter of reflecting deformation of side. This study improve the pratical deformation theory of saturated clay appropriate for the P-decreasing path and lay the foundations of seeking practice of excavation study.

关 键 词：基坑 卸荷 应力应变 试验研究 

分 类 号：TU411[建筑科学—岩土工程] TU473.1[建筑科学—土工工程]