软土深基坑围堰及基础施工对既有下穿管线的影响及 保护措施研究

张玉成; 杨光华; 胡海英; 刘鹏; 钟志辉

软土深基坑围堰及基础施工对既有下穿管线的影响及保护措施研究 English Version

张玉成^1,2,
杨光华^1,2,3,
胡海英⁴,
刘鹏⁵,
钟志辉³

(1.广东省水利水电科学研究院，广东广州 510610；2. 广东省岩土工程技术研究中心，广东广州 510610；3. 武汉大学土木建筑工程学院，湖北武汉 430072；4. 珠江水利科学研究院，广东广州 510611；5. 广州市水务规划勘测设计研究院，广东广州 510640)

详细信息

作者简介:
张玉成(1975– )，男，内蒙古武川县人，博士后，副研究员/高级工程师，从事岩土工程方面的咨询、设计和研究工作。

中图分类号: TU473
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出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Effect of construction of deep excavation cofferdams and foundationin soft soils on underneath pipelines and protective measures

(1. Guangdong Research Institute of Water Resources and Hydropower, Guangzhou 510610, China; 2. The Geotechnical Engineering Technology Center of Guangdong Province, Guangzhou 510610, China; 3. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China; 4. Pearl River Water Resources Scientific Research Institute, Guangzhou 510611, China; 5. Guangzhou Institute of Water Plan Investigation ＆ Design , Guangzhou, 510640, China)

摘要

摘要: 以软土地基管线上基坑围堰和泵站基础施工为工程背景，研究了软土地基深基坑围堰及基础施工对既有下穿管线的影响及保护措施，管线就在围堰下面和泵站基础底板内，基坑围堰及基础施工对管线的影响成为该工程的关键之一。为此，从管线安全控制标准、建立数值模型分析了开挖围堰施工及加固对管线的影响，结果表明，围堰施工对管线具有显著的垂直方向加载作用，不可避免地引起管线顶部土体发生变位，带动土体中的管线产生位移，同时管线的应力状态也有所改变，但是采用合理的加固措施，施工期间管线的安全能够得到保证。本文成果可为优化设计和施工提供了有益的参考，为类似工程提供借鉴。
- 基坑 /
- 管线 /
- 围堰 /
- 保护措施 /
- 数值仿真
Abstract: Based on the construction of excavation cofferdams and pumping station foundation underneath pipelines in soft soils, the effect of the construction of excavation cofferdams and foundation on the pipelines and their protective measures are studied. The effect of the construction of the cofferdams and foundation on the pipelines is the key consideration because they are under the cofferdams and in the floor of the pumping station foundation. Therefore, based on the safety control standards, numerical models are establised to analyze the effect of the construction on them. The results show that the cofferdam construction has considerable vertical loading impact on the pipelines, inevitably creating the deformation of the upper soil and causing the displacement of pipelines in soils. At the same time, the stress state changes as well. However, using the appropriate reinforcement measures, the safety of the pipelines can be guaranteed during the construction. The present results can be used to optimize the design and construction and provide reference for other similar projects.
- excavation /
- pipeline /
- cofferdam /
- protective measure /
- numerical simulation

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参考文献(11)

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文章访问数: 903
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软土深基坑围堰及基础施工对既有下穿管线的影响及 保护措施研究 English Version

作者简介: 张玉成(1975– )，男，内蒙古武川县人，博士后，副研究员/高级工程师，从事岩土工程方面的咨询、设计和研究工作。

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出版历程

Effect of construction of deep excavation cofferdams and foundationin soft soils on underneath pipelines and protective measures

计量

出版历程

目录

软土深基坑围堰及基础施工对既有下穿管线的影响及保护措施研究 English Version

作者简介:
张玉成(1975– )，男，内蒙古武川县人，博士后，副研究员/高级工程师，从事岩土工程方面的咨询、设计和研究工作。