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Author:

Cao, L. (Cao, L..) | Chen, X. (Chen, X..) | Lu, D. (Lu, D..) | Zhang, D. (Zhang, D..) | Su, D. (Su, D..)

Indexed by:

EI Scopus SCIE

Abstract:

This paper conducts a theoretical analysis of ground settlements due to shield tunneling in multi-layered soils which are usually encountered in urban areas. The proposed theoretical solution which is based on the general form of the Mindlin's solution and Loganathan-Poulos formula can comprehensively consider the in-process tunneling parameters including: unbalanced face pressure, shield-soil friction, unbalanced tail grouting pressure, unbalanced secondary grouting pressure, overloading during tunneling and the ground volume loss. The method is verified by comparing with the field data from the Qinghuayuan Tunnel Project in terms of the ground surface settlements along the longitudinal and transverse direction. Due to the local settlement or heave caused by the certain tunneling parameters, the ground surface settlements calculated using current solution along the longitudinal direction presents an irregular S-shaped curve instead of the traditional S-shaped curve. Results also find that the effect of the unbalanced secondary grouting pressure and the overloading during tunneling cannot be ignored. © 2023 Tongji University

Keyword:

Ground settlements Shield Tunneling Urban areas Multi-layered soils Qinghuayuan Tunnel Theoretical analysis

Author Community:

  • [ 1 ] [Cao L.]Institute of Geotechnical and Underground Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Cao L.]Underground Polis Academy, Shenzhen University, Shenzhen, 518060, China
  • [ 3 ] [Cao L.]Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China
  • [ 4 ] [Chen X.]Underground Polis Academy, Shenzhen University, Shenzhen, 518060, China
  • [ 5 ] [Chen X.]Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), Shenzhen University, Shenzhen, 518060, China
  • [ 6 ] [Lu D.]Institute of Geotechnical and Underground Engineering, Beijing University of Technology, Beijing, 100124, China
  • [ 7 ] [Zhang D.]Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing, 100044, China
  • [ 8 ] [Su D.]Underground Polis Academy, Shenzhen University, Shenzhen, 518060, China
  • [ 9 ] [Su D.]Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE), Shenzhen University, Shenzhen, 518060, China

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Source :

Underground Space (new)

ISSN: 2096-2754

Year: 2024

Volume: 16

Page: 29-43

6 . 4 0 0

JCR@2022

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 13

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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