[1]余振兴,俞缙,张建智,等.改进H-B准则的层状岩体隧洞塑性区半径与应力场分析[J].华侨大学学报(自然科学版),2018,39(2):192-197.[doi:10.11830/ISSN.1000-5013.201707052]
　YU Zhenxing,YU Jin,ZHANG Jianzhi,et al.Plastic Zone Radius and Stress Analysis of Tunnel in Layered Rock Based on Improved H-B Criterion[J].Journal of Huaqiao University(Natural Science),2018,39(2):192-197.[doi:10.11830/ISSN.1000-5013.201707052]
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改进H-B准则的层状岩体隧洞塑性区半径与应力场分析()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第39卷
期数:
2018年第2期
页码:
192-197
栏目:
出版日期:
2018-03-20

文章信息/Info

Title:
Plastic Zone Radius and Stress Analysis of Tunnel in Layered Rock Based on Improved H-B Criterion
文章编号:
1000-5013(2018)02-0192-06
作者:
余振兴1;  俞缙1;  张建智2;  刘士雨1;  张玉3;  张大山1
1. 华侨大学 福建省隧道与城市地下空间工程技术研究中心, 福建 厦门 361021;2. 重庆大学 土木工程学院, 重庆 400044;3. 中国石油大学(华东)储运与建筑工程学院, 山东 青岛 266580
Author(s):
YU Zhenxing1;  YU Jin1;  ZHANG Jianzhi2;  LIU Shiyu1;  ZHANG Yu3;  ZHANG Dashan1
1. Fujian Research Center for Tunneling and Urban Underground Space Engineering, Huaqiao University, Xiamen 361021, China; 2. School of Civil Engineering, Chongqing University, Chongqing 400044, China; 3. College of Pipeline and Civil Engineering, China University of Petroleum(East China), Qingdao 266580, China
关键词:
层状岩体;  Hoek-Brown准则;  隧洞塑性区;  片麻岩;  解析解
Keywords:
layered rock mass;  Hoek-Brown criterion;  plastic zone of tunnel;  gneiss;  analytical solution
分类号:
TU452
DOI:
10.11830/ISSN.1000-5013.201707052
文献标志码:
A
摘要:
基于改进的各向异性Hoek-Brown(H-B)强度准则,推导得到层状岩体隧洞围岩塑性区应力场表达式,获得围岩塑性应力分布和塑性区半径解析解.与横观各向同性应力解对比,论述应力分布计算式的正确性与优越性,并分析层理面与最大主应力方向夹角β,地应力p0,围岩单轴抗压强度,以及H-B强度准则经验参数mi对塑性区半径的影响规律.以片麻岩体隧洞为例,重点讨论文中解对β的敏感性.结果表明:当β=90°时,应力随着隧洞半径r增大而增大的速度最快;β对塑性区半径Rp的大小有重要影响.
Abstract:
A stress field expression for plastic zones of layered rock was derived based on improved anisotropic Hoek-Brown(H-B)failure criterion. An analytic solution for the rock plastic stress distribution and plastic zone radius was obtained and the validity and superiority of the formulas was discussed by contrasting with the transversely isotropic stress solution. The effects of various factors on the radius of plastic zone were analyzed, such as the angle β between the bedding plane and the maximum principal stress direction, Geostress, uniaxial compressive strength and H-B strength criterion empirical parameters mi. Taking the gneiss tunnel as an example, the sensitivity of this solution to β is mainly discussed. When β=90°, the stress increases fastest with the increase of the radius of tunnel, and β value influences significantly the radius of the plastic zone.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2017-07-20
通信作者: 俞缙(1978-),男,教授,博士,主要从事岩土力学与地下工程的研究.E-mail:bugyu0717@163.com.
基金项目: 国家自然科学基金资助项目(51679093, 51774147); 福建省自然科学基金资助项目(2017J01094); 福建省自然科学基金面上项目(2015J01210); 福建省高校新世纪优秀人才支持计划基金资助项目(2015年度); 福建省高校杰出青年科研人才培育计划项目(2016年度); 华侨大学研究生科研创新能力培育计划基金资助项目(1611404015)http://www.hdxb.hqu.edu.cn
更新日期/Last Update: 2018-03-20