ISSN 2096-4498

   CN 44-1745/U

二维码
  • Home
  • Solicit Contributions
  • Writing Requirements
  • Editorial Board
  • Council Members
  • Publication Ethics
  • Open Access
  • Advertising
  • Contact Us
  • 中文

Tunnel Construction >

2021 , Vol. 41 >Issue 7: 1206 - 1217

DOI: https://doi.org/10.3973/j.issn.2096-4498.2021.07.015

Construction Risk Control of a Metro Shield Tunnel in a Curved Receiving Section Obliquely Crossing an Adjacent Existing Station: a Case Study on Nanning Rail Transit Line 5 Crossing underneath Guangxi University Station on Existing Line 1 

  • SUN Huiliang ,
  • HU Shengbin ,
  • XIAO Pengfei ,
  • HU Min
Expand

  • (1. Nanning Rail Transit Co., Ltd., Nanning 530029, Guangxi, China; 2. School of Civil Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, China)

Online published: 2021-07-29

Fold

Abstract

To control the risk of an earth pressure balance shield obliquely tunneling underneath an adjacent existing metro station in a curved receiving section and a waterrich gravel stratum, a case study is conducted on the Nanning rail transit line 5 crossing beneath the Guangxi University station of the existing line 1, and the construction risks of the existing station structure are analyzed using the methods of current situation investigation, numerical simulation, and field measurement. Subsequently, a finite element software MIDAS GTS NX is used to establish a threedimensional numerical model to predict the influence of stress and deformation on the existing station and entrance. The early warning control value is proposed combining automatic and manual monitoring, and the shield construction parameters are dynamically adjusted through relevant technical schemes and measures, such as plain pile reinforcement, stratum reinforcement, pile wall cutting, chamber opening and cutter changing, and well group dewatering. Finally, successful shield crossing underneath the existing station is achieved, thereby ensuring the safe operation of the existing line.

Key words： shield tunnel; obliquely crossing; existing station; numerical simulation; structural deformation; monitoring

Cite this article

SUN Huiliang , HU Shengbin , XIAO Pengfei , HU Min .

Construction Risk Control of a Metro Shield Tunnel in a Curved Receiving Section Obliquely Crossing an Adjacent Existing Station: a Case Study on Nanning Rail Transit Line 5 Crossing underneath Guangxi University Station on Existing Line 1 

[J]. Tunnel Construction, 2021 , 41(7) : 1206 -1217 . DOI: 10.3973/j.issn.2096-4498.2021.07.015

Options
Outlines

/

〈 〉

Support by Beijing Magtech Co.ltd support@magtech.com.cn