Design of Qiansanmen Tunnel of Beijing Underground Rail Transit Line  Crossing above Existing Metro Connection Gallery and Existing Power Tunnel

doi:10.3973/j.issn.1672-741X.2014.02.010

Tunnel Construction ›› 2014, Vol. 34 ›› Issue (2): 147-152.DOI: 10.3973/j.issn.1672-741X.2014.02.010

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Design of Qiansanmen Tunnel of Beijing Underground Rail Transit Line  Crossing above Existing Metro Connection Gallery and Existing Power Tunnel

GUO Jianyong

(The Third Railway Survey & Design Institute Group Corporation, Tianjin 300251, China)

Received:2013-11-22 Revised:2014-01-10 Online:2014-02-10 Published:2014-02-27

Abstract

Abstract:

Qiansanmen tunnel of Beijing Underground Rail Transit Line crosses above existing Metro connection gallery and existing power tunnel. The design scheme of “isolating pile protection and sequence excavation” is proposed for the tunnel. The sequence excavation of the tunnel is simulated, and the displacement of the existing Metro connection gallery during tunnel construction is calculated, so as to guarantee the safety of the existing structures in the urban area. Conclusions drawn are as follows: The scheme of isolating pile protection and sequence excavation adopted is feasible and that the safety of the existing Metro connection gallery and the existing power tunnel can be guaranteed.

Key words: Beijing Underground Rail Transit Line, Metro connection gallery, power tunnel, temporary road pavement support, isolating pile protection, structural safety, numerical simulation

GUO Jianyong. Design of Qiansanmen Tunnel of Beijing Underground Rail Transit Line  Crossing above Existing Metro Connection Gallery and Existing Power Tunnel[J]. Tunnel Construction, 2014, 34(2): 147-152.

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Design of Qiansanmen Tunnel of Beijing Underground Rail Transit Line  Crossing above Existing Metro Connection Gallery and Existing Power Tunnel

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