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隧道建设(中英文) ›› 2010, Vol. 30 ›› Issue (S1): 138-144.

• 研究与探索 • 上一篇    下一篇

杭州地铁交叉重叠隧道盾构施工地表沉降三维数值分析

赵军1,李元海2   

  1. 1.中铁隧道集团三处有限公司,广东 深圳518052; 2.中国矿业大学力学与建筑工程学院 北京100083
  • 收稿日期:2009-12-14 修回日期:2010-04-26 出版日期:2010-08-14 发布日期:2010-08-25
  • 作者简介:赵军(1977—),男,河北徐水人,2007年毕业于西南交通大学铁道工程专业,本科,工程师,现从事地铁施工方面的工作。

3D Numerical Analysis on Ground Surface Settlement Induced
by Shield Boring of Overlapping Tunnels: Case Study on WenGen
 Running Tunnel on Line 1 of Hangzhou Metro

 DIAO  Jun1, LI  Yuan-Hai2   

  1. 1. The 3rd Engineering Co., Ltd. of China Railway Tunnel Group; Shenzhen 518052, Guangdong;
    2.The School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083
  • Received:2009-12-14 Revised:2010-04-26 Online:2010-08-14 Published:2010-08-25

摘要:

以杭州地铁1号线文艮盾构区间的左、右线交叉重叠区间隧道为研究对象,采用有限差分软件FLAC3D模拟先上后下和先下后上2种施工工况引起的地表沉降和隧道上浮下沉情况,通过分析比较2种施工工况对地表沉降横向影响范围、地表沉降的极值、先上后下施工上部隧道最终下沉量和先下后上施工下部隧道的最终上浮量,确定交叉重叠隧道先下后上的施工工况。

关键词: 交叉重叠隧道, 盾构法, 三维数值分析, FLAC3D, 地表沉降

Abstract:

WenGen running tunnel on line 1 of Hangzhou Metro is an overlapping tunnel. The ground surface settlement and the uplift/settlement of the tunnel induced by the tunnel construction (including two options, i.e., option 1: boring the upper tube first; option 2: boring the lower tube first) are simulated by FLAC software. The transverse influence scope of the ground surface settlement, the limit values of the ground surface settlement, the final settlement value of the upper tube in case of option 1 and the final uplift value of the lower tube in case of option 2 are analyzed. In the end, option 2 is adopted in accordance with the study results.

Key words: overlapping tunnel, shield tunneling method, 3D numerical analysis, FLAC3D, ground surface settlement