the effect of the ratio of depth to width on tunnel stability

fanjunli; zhuzheming

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the effect of the ratio of depth to width on tunnel stability

更新时间：2023-11-14

- the effect of the ratio of depth to width on tunnel stability
- Advanced Engineering Sciences Vol. 47, Issue Z1, Pages: 76-83(2015)
- 作者机构：
  
  四川大学建筑与环境学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2015，
  
  Published Online：19 November 2014，
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范君黎,朱哲明.高宽比对隧道围岩稳定性的影响[J].工程科学与技术,2015,47(Z1):76-83.

fanjunli, zhuzheming. the effect of the ratio of depth to width on tunnel stability. [J]. Advanced Engineering Sciences 47(Z1):76-83(2015)
范君黎,朱哲明.高宽比对隧道围岩稳定性的影响[J].工程科学与技术,2015,47(Z1):76-83. DOI：

fanjunli, zhuzheming. the effect of the ratio of depth to width on tunnel stability. [J]. Advanced Engineering Sciences 47(Z1):76-83(2015) DOI：

摘要

中文摘要: 为了研究隧道截面形式对隧道围岩的影响，本文采用模型实验和数值模拟方法结合研究了高宽比K变化时马蹄形隧道的围岩稳定性以及损伤破坏规律，考虑了隧道周边无宏观裂纹和含有单一裂纹两种情况；数值模拟采用ABAQUS混凝土塑性损伤模型，计算出隧道周边的应力，对含有裂纹的情况还利用J积分计算出裂纹尖端的应力强度因子，利用ABAQUS中XFEM（extended finite element method）扩展有限元技术模拟高宽比为0.9时裂纹的发展路径和应力分布，与模型实验吻合较好。结果表明，隧道围岩的稳定性和损伤破坏情况随隧道高宽比K的变化而变化，对无裂纹模型，模型试件抗压强度在K=1.5时最大，当K=1.0时最小；对有裂纹隧道模型，模型试件抗压强度在K=1.7时最大，当K=0.7时最小。

Abstract

Abstract:In order to investigate the effect of depth-width ratio of tunnel on the tunnel stability

experiment in combination with numerical studies were adopted. For the case of a tunnel containing a crack was also considered. Stresses around the tunnel were calculated by using concrete damaged plasticity model in ABAQUS code，and for the tunnel with crack the stress intensity factors were calculated with J integral method，and for depth-width ratio 0.9 case

XFEM(extended finite element method) in ABAQUS code was adopted to simulate the crack development path

and the results are in good agreement with the experimental results. The results showed that

tunnel stability varies with depth-width ratio K varying

for non-crack tunnel model

the compressive strength comes to the largest with K=1.5 and comes to the lowest with K=1.0; for tunnel model with one crack

the compressive strength comes to the largest with K=1.7 and comes to the lowest with K=0.7.

关键词

高宽比隧道数值模拟应力强度因子隧道稳定

Keywords

depth-width ratiotunnelnumerical simulationstress intensity factortunnel stability

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Related Author

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Related Institution

State Key Lab. of Hydraulics and Mountain River Eng., Sichuan Univ.

College of Water Resource & Hydropower, Sichuan Univ.

Lab. of Deep Underground Sci.and Eng., for Minisity of Education, Sichuan Univ., Chengdu

四川大学

School of Civil Eng., Central South Univ.

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