PHC管桩施工对周围土体的影响分析  

Analysis of the Pipe Pile Construction Impact on the Surrounding Soil

作　　者：李明 蒋健 顾春光 朱庆锋 

机构地区：[1]上海港湾工程质量检测有限公司,上海200032

出　　处：《工程质量》2009年第7期37-39,共3页Construction Quality

摘　　要：管桩在沉桩过程中产生的挤土效应,会使周围土体发生一定量的变形,并使土体内的孔隙水压力增加,从而对施工周边环境造成影响,甚至发生重大事故。针对此问题,结合京沪高速铁路正线路基PHC管桩沉桩过程的监测成果,分析了管桩在沉桩过程中周围土体变形和孔隙水压力的变化规律,并得出对类似工程具有指导意义的结论。The soil squeezing effect in pile-sinking will bring a certain amount soil deformation and increase pore water pressure in soil. So this will have impact on the construction surrounding environment, even lead to a major accident. This paper based on this problem and combining with monitoring results of PHC pile-sinking process in Beijing-Shanghai high-speed railway lines, analysed change law of surrounding soil deformation and pore water pressure in the pile-sinking process.And come to the conclusions that have guiding significance on similar projects.

关 键 词：PHC管桩 挤土效应 搅拌桩 深层土体位移 超孔隙水压力 

分 类 号：TU753.3[建筑科学—建筑技术科学]