饱和过湿土含水量控制的室内模型试验  

Model Test of Water Content Control of Saturated Over-Wet Soil

作　　者：胡启军[1] 文华[2] 龚成[3] 王天恒[2] 

机构地区：[1]西南交通大学力学博士后流动站,四川成都610031 [2]西南科技大学土木工程与建筑学院,四川绵阳621010 [3]四川蜀渝石油建筑安装工程有限责任公司,四川成都610017

出　　处：《西南交通大学学报》2011年第4期558-563,共6页Journal of Southwest Jiaotong University

基　　金：国家973计划资助项目(2008CB425801);四川省教育厅科研基金资助项目(09ZC108);西南科技大学博士研究基金资助项目(09zx7105)

摘　　要：为探讨降低潮湿多雨地区饱和过湿土含水量的方法及效果,通过室内模型试验,对真空预压排水法和电渗排水法的降水效果进行了对比分析.试验结果表明:2种方法都能有效降低饱和过湿土的含水量,达到排水固结效果,但土样中含水量降低程度的空间分布都存在不均匀性;采用真空预压法时,上下各层的含水量变化不大,固结效果相对较均匀.In order to probe into the approaches and effects of reducing the water content in saturated over-wet soils in moist and rainy areas,the water drainage effects of the vacuum preloading method and electro-osmosis method were compared via indoor model tests.The result indicates that the both methods can effectively reduce water contents in saturated over-wet soils and obtain the desired effects of drainage and consolidation,but there exists inhomogeneity in the spatial distribution of water-reducing content when they are used.When the vacuum preloading method is adopted,water contents in top and bottom soil layers do not change significantly,and consolidation effect is relatively homogenous.

关 键 词：过湿土 含水量 模型试验 真空预压 电渗 

分 类 号：TU411[建筑科学—岩土工程]