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[1]高丙丽,蔡智云.地铁隧道施工对邻近垂直于地铁线路管线的 变形影响规律研究 ）[J].中国安全生产科学技术,2015,11(12):59-64.[doi:10.11731/j.issn.1673-193x.2015.12.009]
　GAO Bing-li,CAI Zhi-yun.Study on influence law of deformation for adjacent pipelines perpendicular to the metro line due to construction of metro tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2015,11(12):59-64.[doi:10.11731/j.issn.1673-193x.2015.12.009]
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地铁隧道施工对邻近垂直于地铁线路管线的 变形影响规律研究 ）
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
11
期数:
2015年12期
页码:
59-64
栏目:
学术论著
出版日期:
2015-12-30

文章信息/Info

Title:
Study on influence law of deformation for adjacent pipelines perpendicular to the metro line due to construction of metro tunnel
文章编号:
1673-193X(2015)-12-0059-06
作者:
高丙丽1; 蔡智云2
（1.西安科技大学 建筑与土木工程学院，陕西 西安 710054； 2.中国电建集团西北勘测设计研究院有限公司, 陕西 西安 710065 ）
Author(s):
GAO Bing-li1;  CAI Zhi-yun2
(1. College of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an Shaanxi 710054, China; 2. Northwest Engineering Corporation Limited of Power China, Xi'an Shaanxi 710065, China)
关键词:
盾构施工; 管线变形; FLAC模拟; 现场监测
Keywords:
shield construction;  deformation of pipelines;  FLAC simulation;  field monitoring
分类号:
X959
DOI:
10.11731/j.issn.1673-193x.2015.12.009
文献标志码:
A
摘要:
地铁隧道施工对周围管线的影响已成为地铁工程中的重点和难点。研究地铁隧道盾构施工对周围邻近管线的变形影响规律，并据此对管线进行合理保护是地铁等隧道建设中面临的普遍任务。以西安地铁3号线为研究背景，通过FLAC数值模拟，得到了多种工况下地铁隧道盾构施工对邻近垂直于地铁线路的管线变形影响规律。研究表明，地铁盾构施工时，对周围环境的影响大小是不一样的，管线的沉降最大值处均位于隧道轴线正上方，且随着管隧距离的缩短，管线沉降最大值不断增大，因隧道盾构施工而对管线的变形影响范围逐渐减小，沉降曲线的沉降槽宽度逐渐减小；管线在距隧道轴线±1.6倍洞径范围内随管隧距离的减小沉降值逐渐增大，反之，其变形减小；随着土仓压力的增大，地下管线的变形越来越小，甚至可能产生向上隆起。工程实践表明，预测结果和监测结果基本一致。
Abstract:
The influence on adjacent existing pipelines due to metro tunnel construction has become the key and difficult problems of metro engineering. Studying on the influence law of deformation for surrounding adjacent pipelines due to shield construction of metro tunnel, and accordingly to conduct reasonable protection on pipelines are the common tasks faced in the construction of metro tunnel. Taking the Line 3 in Xi'an Metro as the research background, the influence law of deformation for adjacent pipelines perpendicular to the metro line due to shield construction of metro tunnel under multi engineering conditions was obtained by using of FLAC numerical simulation. The results showed that the influence on surrounding environment due to metro shield construction is different. The maximum value of pipeline settlement is located just above the tunnel axis line, and with the decrease of distance between pipeline and tunnel, the maximum value of pipeline settlement increases, the influence scope of deformation for the pipeline due to shield construction of metro tunnel decreases gradually, and the width of settling tank in settlement curve reduces. The settlement of pipeline increases gradually with the reduced distance between pipeline and tunnel in the range of ±1.6 times tunnel diameter from tunnel axis, conversely, the deformation of pipeline decreases. With the increasing pressure of soil chamber, the deformation of underground pipeline decreases, and even lead to upward uplift. The engineering practice showed that the prediction results were basically consistent with the monitoring results.

参考文献/References:

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备注/Memo

备注/Memo:
国家自然科学基金项目（41572287）
更新日期/Last Update: 2016-01-25