吹填土快速固结方法试验研究  

Study on Rapid Consolidation Method for Dredger Fill

作　　者：丁贞东[1] 武亚军[1] 

机构地区：[1]上海大学土木工程系,上海200072

出　　处：《建筑科学》2012年第11期58-61,共4页Building Science

基　　金：上海高校选拔培养优秀青年教师科研专项基金(编号A.07-0118-07-002)

摘　　要：针对吹填淤泥质土渗透性差和含水量较高带来的处理时间长,难度大等突出特点,设计室内模型试验,采用真空井点降水并结合低能强夯对吹填土进行处理,在试验过程中对土体真空度、孔隙水压力等进行了测量记录分析,总结吹填淤泥质土中真空度和排水量在试验过程中变化规律。通过数值计算软件模拟室内模型试验,进一步分析本次试验过程,得出真空井点降水结合低能强夯方法对吹填淤泥土有较好的加固作用。Taking the outstanding traits of low permeability and high water content for dredger fill into account,it will cost much time and much effort on foundation consolidation improvement.In indoor model test,the vacuum dewatering and low-energy dynamic compaction on dredger fill are applied,the soil vacuum degree and pore water pressure in experiment process are record,and the rules on the dredger fill are summarized,the numerical calculation software is used to simulate the indoor model test,further analysis of the test is made on some parameters such as vacuum degree,settlement,and pore water pressure,moreover,the corresponding changing principles are investigated.Through the test,this method can be used for the dredger fill.

关 键 词：真空井点降水 低能强夯 模型试验 数值计算 

分 类 号：TU363[建筑科学—结构工程] TU41