Mechanical response analysis of pipe jacking construction to new composite assembly supporting work shaft

XIA Yang-yang; FANG Hong-yuan; ZHANG Chao; PAN Yan-hui; ZHAI Wen-bo; SHI Ming-sheng

doi:10.16285/j.rsm.2021.2118

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Mechanical response analysis of pipe jacking construction to new composite assembly supporting work shaft

更新时间：2026-06-25

- Mechanical response analysis of pipe jacking construction to new composite assembly supporting work shaft
- Vol. 43, Issue 10, Pages: 2799-2808(2022)
- 作者机构：
  
  1. 郑州大学水利科学与工程学院,河南,郑州,450001
  2. 郑州大学重大基础设施检测修复技术国家地方联合工程实验室,河南,郑州,450001
  3. 郑州大学地下工程灾变防控省部共建协同创新中心,河南,郑州,450001
  4. 黄淮学院建筑工程学院,河南,驻马店,463000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2021.2118
  CLC： TU990.3
- Online First：18 October 2022，
  
  Published：2022
- 稿件说明：
移动端阅览
XIA Yang-yang, FANG Hong-yuan, ZHANG Chao, et al. Mechanical response analysis of pipe jacking construction to new composite assembly supporting work shaft[J]. 2022, 43(10): 2799-2808.
DOI：

XIA Yang-yang, FANG Hong-yuan, ZHANG Chao, et al. Mechanical response analysis of pipe jacking construction to new composite assembly supporting work shaft[J]. 2022, 43(10): 2799-2808. DOI： 10.16285/j.rsm.2021.2118.

摘要

由于传统的支护结构在顶管施工中会出现难以预留顶管施工孔洞、沉井倾斜及支护结构承载力不足等问题，严重影响顶管施工的效率和安全性。针对此类问题，提出了一种适用于顶管工作井的新型型钢−高聚物复合装配式支护结构。通过实际工程现场试验和有限元数值模拟相结合的方法，对顶管施工过程中工作井周围的土体沉降变形和支护结构的力学响应进行了分析，并验证了新型支护结构用于顶管施工的可靠性，最后通过正交模拟试验得到了影响工作井支护结构力学性能的主控因素。结果表明，支护桩桩间距是影响新型支护结构力学性能的主控因素，且在短距离顶管过程中，工作井周围土体均有不同程度的沉降，且顶进方向地表沉降最大，侧墙方向地表沉降最小，且对地表沉降的影响范围约为顶进距离的2.7倍。并且，支护桩的应力随管−土界面摩阻力的增大而增大，入洞口位置支护桩的应力最大。在长距离顶管施工中，顶管前期，顶进面应力较大，随着顶进距离的增大，侧墙和后背墙应力增大，高于顶进面。该研究成果可为顶管工作井新型支护结构的优化设计提供有利的建议。

Abstract

Due to some problems such as difficulty in reserving pipe jacking construction holes

the inclination of open caisson and the insufficient bearing capacity of the support structure in the traditional support structure during pipe jacking construction

the efficiency and safety of pipe jacking construction will be seriously affected. To address these problems

a new type of profile steel- polymer composite fabricated support structure suitable for pipe jacking work shaft is developed. Through the combination of actual engineering field test and finite element numerical simulation

the soil settlement deformation around the work shaft and the mechanical response of the support structure during pipe jacking construction are analyzed

and the reliability of the new support structure for pipe jacking construction is verified. Finally

the main controlling factors affecting the mechanical properties of the support structure of the work shaft are obtained through an orthogonal simulation test. The results show that the spacing of support piles is the main controlling factor affecting the mechanical properties of the new support structure

and in the process of short-distance pipe jacking

the soil around the work shaft has different degrees of settlement

and the surface settlement in the jacking direction is the largest

and the surface settlement in the sidewall direction is the smallest

and the influence range on the surface settlement is about 2.7 times of the jacking distance. Moreover

the stress of supporting pile increases with the increase of pipe-soil interface friction

and the stress of supporting pile at the entrance is the largest. In the long-distance pipe jacking construction

the stress of the jacking surface is large in the early stage of pipe jacking. With the increase of the jacking distance

the stress of the sidewall and back wall increases

which is higher than that of the jacking surface. The research results can provide favorable suggestions for the optimal design of a new support structure of pipe jacking work shaft.

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