Field test and numerical simulation of squeezing effect of pipe pile

LEI Hua-yang; LI Xiao; LU Pei-yi; HUO Hai-feng

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Field test and numerical simulation of squeezing effect of pipe pile

更新时间：2026-06-25

- Field test and numerical simulation of squeezing effect of pipe pile
- Vol. 33, Issue 4, (2012)
- 作者机构：
  
  1. 天津大学建筑工程学院土木工程系,天津,300072
  2. 天津大学滨海土木工程结构与安全教育部重点实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU441+.7
- Online First：26 April 2012，
  
  Published：2012
- 稿件说明：
移动端阅览
LEI Hua-yang, LI Xiao, LU Pei-yi, et al. Field test and numerical simulation of squeezing effect of pipe pile[J]. 2012, 33(4).
DOI：

LEI Hua-yang, LI Xiao, LU Pei-yi, et al. Field test and numerical simulation of squeezing effect of pipe pile[J]. 2012, 33(4). DOI：

摘要

以PHC管桩加固某物流加工二期标准仓库、厂房项目为依托，进行了吹填土地区PHC管桩的挤土效应研究。利用预先埋设的孔压计和测斜计，借助沉桩过程的现场测试手段，研究了PHC管桩在沉桩过程中桩周孔压变化和土体位移分布特征，发现沉桩过程中超孔隙水压力随距桩心距离的增加而近似呈线性规律衰减，影响范围约为10倍桩径，土体水平位移不仅与地基土性质有关，而且其分布特征也与深度有很大关系，表现为0.2～0.4倍桩长处土体水平位移较大。采用数值模拟有效地模拟了现场测试结果，进而将结果推广，得到了沉桩引起的桩周土体位移随深度和距桩心距离的变化规律。数值模拟结果表明：桩-土界面摩擦特性和桩径对土体位移场的影响较大。

Abstract

Based on a logistics processing warehouse of phase II and plant project reinforced by PHC pipe pile

the compaction effect of PHC pipe pile in dredger fill ground is analyzed. The changes of pore pressure around pipe and the displacement distribution characteristics of soil during pile-sinking are studied by piezometers and clinometers embedded in advance and with the aid of field test means. It is found that the excess pore water pressure decreases linearly with the increase of the distance to the pile and the area of effect is about 10 times of pile diameter. The maximum soil horizontal displacement occurs at a depth of 0.2-0.4 times of pile length

which is related to the subsoil properties and the depth of the soil. By simulating the field test results effectively with numerical simulation and then promoting the results

the law of the displacement of soil with depth and the radial distance during pile-sinking is got. The numerical simulation results show that the soil displacement field is greatly influenced by the friction feature of pipe-soil interface and the pile diameter.

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