Safe Construction Technologies for Newlybuilt Metro Station Foundation  Pit Closely Crossing underneath Adjacent Operation Metro Station

doi:10.3973/j.issn.2096-4498.2018.11.012

Tunnel Construction ›› 2018, Vol. 38 ›› Issue (11): 1836-1845.DOI: 10.3973/j.issn.2096-4498.2018.11.012

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Safe Construction Technologies for Newlybuilt Metro Station Foundation  Pit Closely Crossing underneath Adjacent Operation Metro Station

WANG Huaidong¹, LIU Fangming¹, PENG Hongxia²

(1. China Railway Liuyuan Group Co., Ltd., Tianjin 300308, China;  2. Nanjing Metro Co., Ltd., Nanjing 210036, Jiangsu, China)

Received:2018-04-27 Revised:2018-09-14 Online:2018-11-20 Published:2018-12-02

Abstract

Abstract:

It is very important to study the influences of different construction methods on adjacent existing metro station and propose feasible control measures. Hence, the risk control measures for newlybuilt station foundation pit on Nanjing Metro Line No. 5 closely crossing underneath adjacent station on Line No. 2 are studied. The conclusions are drawn as follows: (1) The existing metro station is divided into 2 foundation pits by separation pile, which can guarantee the normal operation and structural safety of the existing metro station. (2) Tenstepped heading excavation method and zerocovered support system are used for mined section of transfer node, which can effectively control the sinking of the existing metro station to guarantee its safety.

Key words: operation metro station, newlybuilt metro station, foundation pit, closely underneath crossing, mined transfer node

CLC Number:

U 455

WANG Huaidong, LIU Fangming, PENG Hongxia. Safe Construction Technologies for Newlybuilt Metro Station Foundation  Pit Closely Crossing underneath Adjacent Operation Metro Station[J]. Tunnel Construction, 2018, 38(11): 1836-1845.

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Safe Construction Technologies for Newlybuilt Metro Station Foundation  Pit Closely Crossing underneath Adjacent Operation Metro Station

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