软土地基中预应力管桩荷载-沉降曲线计算  

Calculation of load settlement curve of prestressed pipe pile in soft soil foundation

作　　者：李文勇 张浩 关宏信[2] 李文静 LI Wen-yong;ZHANG Hao;GUAN Hong-xin;LI Wen-jing(Hunan Provincial Communications Planning Survey&Design Institute Co.,Ltd.,Changsha 410200,China;School of Traffic and Transportation Engineering,Changsha University of Science&Technology,Changsha 410114,China;Hunan Communications Research Institute,Co.,Ltd.,Changsha 410015,China)

机构地区：[1]湖南省交通规划勘察设计院有限公司,湖南长沙410200 [2]长沙理工大学交通运输工程学院,湖南长沙410114 [3]湖南省交通科学研究院有限公司,湖南长沙410015

出　　处：《交通科学与工程》2021年第3期17-21,共5页Journal of Transport Science and Engineering

摘　　要：为研究预应力管桩单桩极限承载力,采用指数函数模型计算和分析预应力管桩桩周摩阻力-沉降关系、桩端阻力-沉降关系。以安慈高速预应力管桩单桩极限承载力为例,进行指数函数模型计算和静载试验,并对计算结果和试验结果进行对比分析。研究结果表明:指数函数模型的计算结果与静载试验的结果较为相近,该模型可以有效预测软土中预应力管桩单桩极限承载力,可为类似工程估算桩土沉降提供指导。In order to investigate the ultimate bearing capacity of single prestressed pipe pile,the exponential model method was used to describe the relationship between frictional resistance and settlement,and the relationship between the pile tip resistance and settlement.The ultimate bearing capacity of single prestressed pipe pile was calculated using the exponential function model.Which was then compared with the value measured from the statics test at the Anci Highway.The research showed that the result of load settlement theoretical calculation is close to that of static load test.The bearing capacity of single prestressed pipe pile in soft soil can be predicted effectively using the exponential function model.Therefore,this study can provide guidance for similar project to estimate the pile-soil settlement.

关 键 词：荷载传递法 指数模型 静载试验 荷载-沉降曲线 

分 类 号：TU471.8[建筑科学—结构工程]