Influence of Deep Excavations on Nearby Existing Tunnels

被引：243

作者：

Huang, Xu ^{[1
,2
]}

Schweiger, Helmut F. ^{[3
]}

Huang, Hongwei ^{[1
,2
]}

机构：

[1] Tongji Univ, Key Lab Geotech & Underground Engn, Minist Educ, Shanghai 200092, Peoples R China

[2] Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China

[3] Graz Univ Technol, Computat Geotech Grp, Inst Soil Mech & Fdn Engn, A-8010 Graz, Austria

来源：

INTERNATIONAL JOURNAL OF GEOMECHANICS | 2013年 / 13卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Finite-element method; Excavation; Soil stiffness; Tunnels; ADJACENT;

D O I：

10.1061/(ASCE)GM.1943-5622.0000188

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

In Shanghai, a number of new underground passages are being constructed, often requiring deep excavations. When the excavations are in the vicinity of existing tunnels, it is necessary to assess the influence of these excavations on existing tunnels such as displacements of the lining and additional loads on the lining. This paper presents a finite-element parametric study of tunnel behavior caused by nearby deep excavation. This study investigates the effects of several parameters that may affect the tunnel response. These parameters are: Relative position of the tunnel with respect to the excavation, tunnel diameter, excavation dimensions, and tunnel protection measures. The results reveal that the influence of the excavation on the underlying tunnel is significant in a range of similar to 5 x excavation width measured along the tunnel axis; unloading further than 10 m away from the axis of the tunnel has little effect on the tunnel structure. Based on the study in this paper a better understanding of the interaction between deep excavations and tunnels will be obtained. (C) 2013 American Society of Civil Engineers.

引用

页码：170 / 180

页数：11

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