临近静压PHC群桩扰动下软土路基受力变形计算分析  

Calculation and Analysis of Stress and Deformation of Soft Soil Subgrade Under the Disturbance of PHC Pile Group Near Static Pressure

作　　者：袁继奎 任宏图 郑伟 Yuan Jikui;Ren Hongtu;Zheng Wei(Shandong Road&Bridge Group Co.,Ltd.,Jinan 250014,China)

机构地区：[1]山东省路桥集团有限公司,济南市250014

出　　处：《北方交通》2025年第4期66-69,共4页Northern Communications

摘　　要：预应力混凝土管桩具有成桩快、质量好等优点,但其挤土效应较强,临时建筑物施工需重点关注挤土引起的水平位移。文章基于圆孔扩张理论,建立了群桩挤土位移解答方程。该方程可对预应力管桩群桩施工过程中产生的周边土体位移进行求解,通过计算获取土体位移,从而为设计和施工安全控制提供支持。The prestressed concrete pipe pile has the advantages like fast pile formation,good quality and so on,but the soil squeezing effect is strong.It is necessary to pay special attention to the horizontal displacement caused by soil squeezing during the construction of temporary buildings.Based on the theory of circular hole expansion,the equation for solving the displacement of pile group during soil squeezing is established.The equation can solve the displacement of the surrounding soil generated during the construction process of prestressed pipe pile group,and obtain the soil displacement through calculation,so as to provide support for design and construction safety control.

关 键 词：PHC 软土路基 挤土效应 圆孔扩张理论 

分 类 号：U416.1[交通运输工程—道路与铁道工程]