深厚软土地区预制群桩施工挤土位移分析  

Analysis on Soil Squeezing Displacement During Prefabricated Pile Group Construction in Deep and Thick Soft Soil Area

作　　者：周晓峰 ZHOU Xiaofeng(China Railway 22nd Bureau Group Rail Engineering Co.,Ltd.,Beijing 100040,China)

机构地区：[1]中铁二十二局集团轨道工程有限公司,北京100040

出　　处：《工程技术研究》2024年第13期43-45,共3页Engineering and Technological Research

摘　　要：深厚软土地区群桩贯入引起的挤土效应是施工中需要重点关注的问题。文章通过原位试验研究了深厚软土条件下预制群桩的挤土特性,通过不同位置的土体位移监测数据,分析了桩基贯入后的土体变形特性,阐述了单桩和群桩条件下桩基挤土变形规律,得到了桩基贯入引起的水平挤土范围,并对群桩贯入后的土体多方向水平挤土位移规律进行了量化分析。The soil squeezing effect caused by pile group penetration in deep and thick soft soil area is a problem that needs to be paid attention to in construction.The soil squeezing characteristics of prefabricated pile group under deep and thick soft soil conditions are studied by in-situ test.The soil deformation characteristics after pile foundation penetration are analyzed by soil displacement monitoring data at diff erent positions.The soil squeezing deformation law of pile foundation under single pile and pile group conditions is expounded.The horizontal soil squeezing range caused by pile foundation penetration is obtained,and the multi-directional horizontal soil squeezing displacement law of soil after pile group penetration is quantitatively analyzed.

关 键 词：深厚软土地区 预制桩 挤土效应 土体位移 

分 类 号：TU753[建筑科学—建筑技术科学]