Study on soil-compacting effects induced by pipe jacking construction

WEI Gang; WEI Xin-jiang; XU Ri-qing

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Study on soil-compacting effects induced by pipe jacking construction

更新时间：2026-06-25

- Study on soil-compacting effects induced by pipe jacking construction
- Vol. 27, Issue 5, (2006)
- 作者机构：
  
  1. 浙江大学城市学院,杭州,310015
  2. 浙江大学建筑工程学院,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU431
- Online First：05 November 2013，
  
  Published：2006
- 稿件说明：
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WEI Gang, WEI Xin-jiang, XU Ri-qing. Study on soil-compacting effects induced by pipe jacking construction[J]. 2006, 27(5).
DOI：

WEI Gang, WEI Xin-jiang, XU Ri-qing. Study on soil-compacting effects induced by pipe jacking construction[J]. 2006, 27(5). DOI：

摘要

顶管施工过程中过大的支护压力、掘进机偏斜、掘进机与土体的摩阻力，以及过大的注浆压力都会引起挤土效应，挤土过程会减小施工结束时的沉降值和沉降槽宽度。考虑土体的初始应力场，假定土体是均匀线弹性材料，通过向掘进机周围土体施加向外侧的椭圆形径向位移来模拟挤土过程，在小应变假定情况下，推导了半无限空间中土体位移场的近似解析解。考虑空间效应，给出了修正的计算公式。将该公式计算得到的结果与实测值进行了比较，结果表明：地面隆起的最高点位于轴线两侧，由于地面硬壳层的存在，使计算值稍大于实测值，硬壳层以下则非常吻合。

Abstract

It is shown that the excessive support pressure

deflexion of shield

the friction between shield and soil，and the big grouting pressure will induce the compacting effects during pipe jacking construction. In addition

the heaving process will reduce the total magnitude and widths of the surface settlement troughs after the construction completion. The soil is assumed as a uniform line elasticity material and the initial stress field of the soil is considered. Through the simulation of soil-compacting process by applying an outward elliptic radial displacement to the surrounding soil of shield

the approximate analytical solution of soil displacement fields in half space is obtained in small strains. Considering the spatial effects

the modified calculation formula is also presented. Furthermore

the calculation results from the modified formula are compared with field data. The maximum of surface upheaval is at both sides of axes. The calculated values are a little bigger due to hard surface of ground; while under the hard surface

they are in accordance with the measured values.

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Related Author

WEI Gang

ZHU Kui

Related Institution

Department of Civil Engineering, Zhejiang University City College

Institute of Geotechnical Engineering, Zhejiang University

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