顶管施工对新型复合装配式支护工作井的
力学响应分析

doi:10.16285/j.rsm.2021.2118

岩土力学 ›› 2022, Vol. 43 ›› Issue (10): 2799-2808.doi: 10.16285/j.rsm.2021.2118

顶管施工对新型复合装配式支护工作井的力学响应分析

夏洋洋^{1, 2, 3}，方宏远^{1, 2, 3}，张超^{1, 2, 3}，潘艳辉⁴，翟文博^{1, 2, 3}，石明生^{1, 2, 3}

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

收稿日期:2021-12-15 修回日期:2022-06-22 出版日期:2022-10-19 发布日期:2022-10-18
通讯作者: 张超，男，1984年生，博士，副教授，博士生导师，主要从事工程修复材料的宏微观物理力学性能研究。E-mail: chao.zhang.zzu@outlook.com E-mail: xiayy0726@126.com
作者简介:夏洋洋，男，1993年生，博士研究生，主要从事城市埋地管道非开挖修复材料、技术和理论研究。
基金资助:
国家自然科学基金（No. 51909242，No. 51978630，No. 52178368）；河南省高校科技创新团队支持计划（No. 23IRTSTHN004）；河南省高校科技创新人才支持计划（No. 23HASTIT007）。

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

XIA Yang-yang^{1, 2, 3}, FANG Hong-yuan^{1, 2, 3}, ZHANG Chao^{1, 2, 3}, PAN Yan-hui⁴, ZHAI Wen-bo^{1, 2, 3}, SHI Ming-sheng^{1, 2, 3}

1. School of Water Conservancy Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China; 2. National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou University, Zhengzhou, Henan 450001, China; 3. Collaborative Innovation Center for Disaster Prevention and Control of Underground Engineering Jointly Built by Provinces and Ministries, Zhengzhou University, Zhengzhou, Henan 450001, China; 4. School of Architectural Engineering, Huanghuai University, Zhumadian, Henan 463000, China

Received:2021-12-15 Revised:2022-06-22 Online:2022-10-19 Published:2022-10-18
Supported by:
This work was supported by the National Natural Science Foundation of China (51909242, 51978630, 52178368), the Program for Science and Technology Innovation Teams in Universities of Henan Province (23IRTSTHN004) and the Program for Science and Technology Innovation Talents in Universities of Henan Province (23HASTIT007).

摘要/Abstract

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。

关键词: 顶管工作井, 装配式结构, 型钢?高聚物, 现场试验, 有限元模拟, 力学响应

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.

Key words: pipe jacking work shaft, assembled structure, profile steel-polymer, field test, finite element simulation, mechanical response

中图分类号:

TU 990.3

夏洋洋, 方宏远, 张超, 潘艳辉, 翟文博, 石明生, . 顶管施工对新型复合装配式支护工作井的力学响应分析[J]. 岩土力学, 2022, 43(10): 2799-2808.

XIA Yang-yang, FANG Hong-yuan, ZHANG Chao, PAN Yan-hui, ZHAI Wen-bo, SHI Ming-sheng, . Mechanical response analysis of pipe jacking construction to new composite assembly supporting work shaft[J]. Rock and Soil Mechanics, 2022, 43(10): 2799-2808.

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顶管施工对新型复合装配式支护工作井的力学响应分析

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

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顶管施工对新型复合装配式支护工作井的 力学响应分析

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

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顶管施工对新型复合装配式支护工作井的力学响应分析