真空排水预压下土体变形的应力路径分析  

ANALYSIS OF STRESS PATH SOIL′S DEFORMATION UNDER THE VACUUM DRAINAGE PRELOADING

作　　者：李丽慧[1] 王清[1] 王剑平[2] 王年香[2] 

机构地区：[1]长春科技大学环境与建设工程学院,长春130026 [2]南京水利科学研究院,南京210024

出　　处：《工程地质学报》2001年第2期170-173,共4页Journal of Engineering Geology

基　　金：国家自然科学基金!资助 (编号 :49972 0 89)资助

摘　　要：通过室内试验 ,对真空排水预压下土体变形特性进行了应力路径分析 ,测定软土地基在真空预压加固后应力路径的改变对沉降量的影响 ,论证真空排水预压加固软土地基不能消除其剪应力引起的剪切变形 ,结合实例 ,计算其后期沉降量与固结沉降量的比值 ,并推算软土地基在真空预压下其最终沉降量计算公式的修正系数。The properties of soil deformation under vacuum drainage preloading are analyzed through the stress path in the paper , then the influences of the stress path change on the settlement is induced when the soil foundation is used after its consolidation by vacuum preloading. It also calculated the value of the residual settlement compared to the consolidation settlement. Finally, a formula for evaluating the final settlement is given.

关 键 词：真空排水预压 土体变形 应力路径 空内试验 沉降量 软土地基 剪应力 

分 类 号：TU435[建筑科学—岩土工程]