Influence Research on Pit Excavation Close to Existing Shield Tunnel-Reference-Cited by-同舟云学术

Influence Research on Pit Excavation Close to Existing Shield Tunnel

Published:2013-03 Issue: Volume:671-674 Page:54-59
ISSN:1662-8985
Container-title:Advanced Materials Research
language:
Short-container-title:AMR

Author:

Liu Lin¹,Ge Peng Fei¹,Wei Gang²,Ying Zhi Jie³,Luo Can Fang⁴,Fei Xia Ting³

Affiliation:

1. Hangzhou Urban Infrastructure Construction Development Center

2. Zhejiang University City College

3. China Southwest Geotechnical Investigation & Design Institute

4. China Southwest Geotechnical Investigation and Design Institute

Abstract

Pit excavation has a negative impact on the existing shield tunnel close to it. The deformation mechanism of the existing tunnel during the pit excavation was analyzed. Theoretical analysis results shows: excavation unloading decreases the pressure in horizontal direction of the tunnel, which causes tunnel taking the horizontal displacement to the pit side; convergent deformation keeps in horizontal stretching, vertical compression, but the deformation is aggravated; tunnel vertical uplift or settlement is determined by the pit excavation depth; precipitation would make tunnel sinking. Five domestic pit excavation engineering instance was collected, and the reliability of the analysis in this article is proved by the statistical analysis of the measured data.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Link

https://www.scientific.net/AMR.671-674.54.pdf

Reference11 articles.

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