隧道开挖对邻近非连续接口地埋管线的影响分析

张陈蓉; 俞剑; 黄茂松

隧道开挖对邻近非连续接口地埋管线的影响分析 English Version

张陈蓉^{1, 2},
俞剑^{1, 2},
黄茂松^{1, 2}

1. 同济大学地下建筑与工程系，上海 200092; 2. 同济大学岩土及地下工程教育部重点实验室，上海 200092

基金项目: 国家杰出青年科学基金项目（50825803）；上海市科委重点科技项目（08201200902）

详细信息

作者简介:
张陈蓉(1982- )，女，讲师，主要从事岩土工程教学和科研工作。E-mail: zcrong33@tongji.edu.cn。

中图分类号: TU433
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出版历程
- 收稿日期: 2012-07-22
- 发布日期: 2013-06-19

Responses of adjacent underground jointed pipelines induced by tunneling

ZHANG Chen-rong^{1, 2},
YU Jian^{1, 2},
HUANG Mao-song^{1, 2}

1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China

摘要

摘要: 隧道开挖引起的地面沉降会引起邻近区域地埋管线的附加受力和变形，甚至会引起管线的开裂破坏。将隧道开挖引起的地面沉降效应作为外界条件施加于地埋管线上，基于改进的Winkler地基模型，并采用虚拟节点以考虑管线接口处的力学特性，提出了刚度非连续接口管线在隧道开挖条件下响应的简化理论分析方法。通过与弹性理论法、离心机试验和实际工程对比，验证了该方法的合理性。并通过与层状弹性理论解的对比，得到了该方法在非均质地基中的适用性。参数分析认为忽略管线接口存在的连续管线假设在分析接口地埋管线有不合理处。
- 隧道开挖 /
- 接口管线 /
- Winkler地基模型 /
- 简化分析方法
Abstract: The excavation-induced soil settlement will induce extra deformation and bending moment on nearby buried pipelines, even damage. The soil movement by tunnel excavation is imposed to the buried pipeline directly. Based on the Winkler subgrade model and fictitious nodes to consider the mechanical property of joints of discontinuous pipelines, a simplified theoretical method is proposed to analyze the behavior of discontinuous buried pipelines under tunnel excavation. Through comparisons of the results of elastic analysis, centrifuge tests and a case study, the rationality of the proposed method is proved. Then the applicability of the proposed method in non-homogeneous soil is discussed by comparing the results with the solutions of the layered elastic theoretical method. Based on parametric studies, it is found that treating discontinuous pipelines as continuous ones is not rational.
- tunneling /
- jointed pipeline /
- Winkler subgrade model /
- simplified method

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参考文献(18)

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