基于模型试验的群桩沉桩后超孔隙水压力分析  

Anslysis on excess pore water pressure in pile group based on model test

作　　者：孙世光[1] 张凤亮[2] 

机构地区：[1]天津市房产住宅科学研究所 [2]天津市房屋鉴定勘察设计院

出　　处：《山西建筑》2010年第19期121-122,共2页Shanxi Architecture

摘　　要：基于静压群桩模型试验,运用孔压计分别量测了单桩、群桩沉桩后的超孔隙水压力,通过量测结果表明:单桩时,随着径向距离的增加,超孔隙水压力是不断减小的;群桩压入后,超孔隙水压力在桩身范围内是随着深度的增加而不断增加的;由于压桩顺序的影响,当桩压入与测点较近时,则该测点处的超孔压值会猛然上升。This paper is based on jacked pile group model test.Devices for measuring excess pore water pressure were used when the single pile and pile group penetrated into the soil.According to the test,a conclusion is obtained that the excess pore water pressure decreased as the radial direction distance increased when the single pile was penetrated into the soil,the excess pore water pressure increased as the depth increased around the pile area when the pile group were penetrated into the soil.The excess pore water pressure increased suddenly when the driving pile was close to the measure point because the driving order effect.

关 键 词：群桩 挤土效应 模型试验 超孔隙水压力 

分 类 号：TU413[建筑科学—岩土工程]