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Author:

Li, Jidong (Li, Jidong.) | Tao, Lianjin (Tao, Lianjin.) (Scholars:陶连金) | An, Junhai (An, Junhai.) | Wu, Binglin (Wu, Binglin.)

Indexed by:

EI Scopus

Abstract:

This paper presents a case analysis of the settlement value of the existing Subway Station during the construction of a new subway station close-attached undercrossing in Beijing, China. A micro-distortion excavation control method is proposed, that is the flat-top straight wall Cross Diaphragm (CRD) + multiple pre-top bracing concealed excavation construction methods. Furthermore, a numerical analysis using a finite difference program, FLAC3D, was conducted to analyze the settlement value of the existing Subway Station. .The results show that the maximum accumulated settlement value distribution was a shape of 'W'; the largest settlement value is 2.96 mm, occurred above 5 drift; The accumulative deformation of the existing station was largest when the excavation of 1-drift and 2-drift was completed; Jacks plays an important role in the active controlling the settlement value of the existing station. The excavation of 1-drift destroys original crustal stress equilibrium, the plastic zone is formed; The plastic zone scope of soil above excavation section is largest, the thickness is about 12.5m. © 2014 ejge.

Keyword:

Excavation Railroads Subway stations Jacks

Author Community:

  • [ 1 ] [Li, Jidong]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 2 ] [Li, Jidong]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China
  • [ 3 ] [Tao, Lianjin]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 4 ] [Tao, Lianjin]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China
  • [ 5 ] [An, Junhai]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 6 ] [An, Junhai]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China
  • [ 7 ] [Wu, Binglin]Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
  • [ 8 ] [Wu, Binglin]Dept. of Civil Engineering, Beijing University of Technology, Beijng, China

Reprint Author's Address:

  • [li, jidong]dept. of civil engineering, beijing university of technology, beijng, china;;[li, jidong]key laboratory of urban security and disaster engineering, ministry of education, beijing university of technology, beijing, china

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Source :

Electronic Journal of Geotechnical Engineering

Year: 2014

Issue: T

Volume: 19

Page: 5785-5792

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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