竖向小曲率半径曲线顶管掘进管节-土体相互作用

doi:10.16183/j.cnki.jsjtu.2023.S1.02

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (S1): 69-79.doi: 10.16183/j.cnki.jsjtu.2023.S1.02

竖向小曲率半径曲线顶管掘进管节-土体相互作用

李登¹, 庄欠伟³, 黄昕¹^,²(), 周东荣⁴, 朱小东⁴, 张弛³, 魏良孟⁴

1.同济大学地下建筑与工程系,上海 200092
2.新疆大学建筑工程学院,乌鲁木齐 830047
3.上海隧道工程有限公司,上海 200032
4.交通运输部上海打捞局,上海 200090

收稿日期:2022-07-07 修回日期:2022-07-25 接受日期:2022-08-22 出版日期:2023-10-28 发布日期:2023-11-10
通讯作者: 黄昕 E-mail:xhuang@tongji.edu.cn.
作者简介:李登(1998-),硕士生,从事隧道及地下工程方面的研究.
基金资助:
上海市科委社发领域重大项目(21DZ1201103);国家自然科学基金(52278407)

Pipe-Ground Interaction During Curved Pipe Jacking Process with a Small Radius of Vertical Curvature

LI Deng¹, ZHUANG Qianwei³, HUANG Xin¹^,²(), ZHOU Dongrong⁴, ZHU Xiaodong⁴, ZHANG Chi³, WEI Liangmeng⁴

1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China
2. College of Civil Engineering and Architecture, Xinjiang University, Urumuchi 830047, China
3. Shanghai Tunnel Engineering Co., Ltd., Shanghai 200032, China
4. Shanghai Salvage Ministry of Transport, Shanghai 200090, China

Received:2022-07-07 Revised:2022-07-25 Accepted:2022-08-22 Online:2023-10-28 Published:2023-11-10
Contact: HUANG Xin E-mail:xhuang@tongji.edu.cn.

摘要/Abstract

摘要：

“长江口二号”古沉船采用国际首创的曲线顶管底幕法进行打捞,其顶管机的机械设计及管节的结构设计需明确顶管管节与地层的相互作用并建立合理的顶推力计算模型.在厘清顶管掘进过程中管节-地层相互作用因素的基础上,基于极限平衡理论,推导竖向小曲率半径曲线顶管掘进顶推力计算方法.采用耦合欧拉-拉格朗日(CEL)方法对单根管节的动态掘进过程进行数值模拟分析,获得小曲率半径矩形曲线顶管掘进过程中地层应力和地表变形的动态变化规律,并通过与模型试验、现场施工监测数据和理论计算结果的对比分析,明确竖向小曲率半径曲线顶管动态掘进过程中顶推力的动态变化特征及控制因素.研究成果可为类似“长江口二号”打捞工程的实施提供重要的理论依据和技术指导.

关键词: 曲线顶管底幕法, 沉船打捞, 顶推力, 耦合欧拉-拉格朗日方法, 地层变形

Abstract:

The salvage of “Yangtze River Estuary II” ancient wreck adopted the world’s first curved pipe based method. The mechanical design of the pipe jacking machine and the structure design of curved pipe relied on the understanding of the pipe-ground interaction mechanism and establishment of a reasonable model for calculating the driving force. Based on the understanding of the major factors contributing to the pipe-ground interaction, a theoretical model for calculating the driving force of curved pipe jacking machine with a small radius of vertical curvature was derived through equilibrium analysis. The dynamic jacking process of a single pipe was simulated using the coupled Eulerian Lagrangian (CEL) method, from which the evolution processes of ground stress and ground surface settlement during the curved pipe jacking process with a small radius of vertical curvature were obtained. The simulation results were compared with model test data, on-site monitoring data, and theoretical calculation results, whereby the characteristics of driven force evolution and its controlling factors were obtained. The research outcome can provide theoretical basis and technical support for future wreck salvage project similar to “Yangtze River Estuary II”.

Key words: curved pipe based method, wreck salvage, driving force, coupled Eulerian Lagrangian (CEL) method, ground settlement

中图分类号:

TU94

李登, 庄欠伟, 黄昕, 周东荣, 朱小东, 张弛, 魏良孟. 竖向小曲率半径曲线顶管掘进管节-土体相互作用[J]. 上海交通大学学报, 2023, 57(S1): 69-79.

LI Deng, ZHUANG Qianwei, HUANG Xin, ZHOU Dongrong, ZHU Xiaodong, ZHANG Chi, WEI Liangmeng. Pipe-Ground Interaction During Curved Pipe Jacking Process with a Small Radius of Vertical Curvature[J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 69-79.

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竖向小曲率半径曲线顶管掘进管节-土体相互作用

Pipe-Ground Interaction During Curved Pipe Jacking Process with a Small Radius of Vertical Curvature

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