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浙江大学学报(工学版)  2017, Vol. 51 Issue (7): 1269-1277    DOI: 10.3785/j.issn.1008-973X.2017.07.001
土木工程     
大型地下通道开挖对下卧地铁隧道上浮影响
陈仁朋1,2,3, 叶跃鸿1,2, 王诚杰1,2, 孟凡衍1,2
1. 浙江大学 软弱土与环境土工教育部重点实验室, 浙江 杭州 310058;
2. 浙江大学 岩土工程研究所, 浙江 杭州 310058;
3. 湖南大学 土木工程学院, 湖南 长沙 410082
Influence of open-cut tunneling on uplift behavior of underlying metro tunnel
CHEN Ren-peng1,2,3, YE Yue-hong1,2, WANG Cheng-jie1,2, MENG Fan-yan1,2
1. MOE Key Laboratory of Soft Soil and Environmental Soil Engineering, Zhejiang University, Hangzhou 310058, China;
2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
3. College of Civil Engineering, Hunan University, Changsha 410082, China
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摘要:

为了研究地下通道明挖施工对地铁隧道上浮的影响,基于地铁隧道上浮变形实测数据,分析地下通道开挖过程中下卧地铁隧道上浮变形的统计规律.采用小应变硬化土模型,开展二维有限元数值模拟,研究地下通道开挖过程中下卧隧道的上浮规律.结果表明,在地下通道基坑的开挖过程中,下卧地铁隧道的上浮变形与卸载率近似呈线性关系;基底不同水平位置隧道上浮变形连成的包线随着卸载率的增加,由直线型发展为抛物线型,最终呈双峰线型.

Abstract:

The statistical law of uplift of the metro tunnel during excavating was analyzed based on the measured results in order to analyze the influence of open-cut tunneling on uplift behavior of the underlying metro tunnel. The two-dimensional numerical analysis considering the small strain of soil was conducted in order to investigate the law of uplift of the underlying metro tunnel during the excavation of underground passage. The calculation results indicated that the uplift displacement of the underlying metro tunnel during extra long excavating was approximately linear with the unloading ratio. The envelope curve connected with the uplift displacements of metro tunnel at different horizontal positions of excavation basement developed from straight type to parabolic type, and finally bimodal type with the increase of the unloading ratio.

收稿日期: 2017-01-09 出版日期: 2017-07-08
CLC:  TU47  
基金资助:

国家重点研发计划资助项目(2016YFC0800207);深圳市交通公用设施建设中心资助项目(20151118003B);国家自然科学基金资助项目(41472244)

作者简介: 陈仁朋(1972—),男,教授,从事岩土工程的研究.ORCID:0000-0001-6968-4955.E-mail:chenrp@zju.edu.cn
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引用本文:

陈仁朋, 叶跃鸿, 王诚杰, 孟凡衍. 大型地下通道开挖对下卧地铁隧道上浮影响[J]. 浙江大学学报(工学版), 2017, 51(7): 1269-1277.

CHEN Ren-peng, YE Yue-hong, WANG Cheng-jie, MENG Fan-yan. Influence of open-cut tunneling on uplift behavior of underlying metro tunnel. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(7): 1269-1277.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2017.07.001        http://www.zjujournals.com/eng/CN/Y2017/V51/I7/1269

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