[1]孙雁军,阳军生,杨峰,等.对向施工隧道贯通前开挖面稳定性上限有限元分析[J].哈尔滨工程大学学报,2019,40(07):1290-1296.[doi:10.11990/jheu.201805086]
 SUN Yanjun,YANG Junsheng,YANG Feng,et al.Upper bound finite element analysis of the stability of tunnel faces on the opposite side before penetration[J].hebgcdxxb,2019,40(07):1290-1296.[doi:10.11990/jheu.201805086]
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对向施工隧道贯通前开挖面稳定性上限有限元分析(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2019年07期
页码:
1290-1296
栏目:
出版日期:
2019-07-05

文章信息/Info

Title:
Upper bound finite element analysis of the stability of tunnel faces on the opposite side before penetration
作者:
孙雁军12 阳军生13 杨峰13 罗静静1
1. 中南大学 土木工程学院, 湖南 长沙 410075;
2. 湖南省高速公路建设开发有限公司, 湖南 长沙 410001;
3. 中南大学 重载铁路工程结构教育部重点实验室, 湖南 长沙 410075
Author(s):
SUN Yanjun12 YANG Junsheng13 YANG Feng13 LUO Jingjing1
1. School of Civil Engineering, Central South University, Changsha 410075, China;
2. Hu’nan Expressway Construction and Development Co., Ltd., Changsha 410001, China;
3. Key Laboratory of Engineering Structure of Heavy Railway, Ministry of Education, Central South University, Changsha 410075, China
关键词:
对向施工开挖面稳定性上限有限元刚体平动运动单元稳定性系数破坏模式隧道
分类号:
U452
DOI:
10.11990/jheu.201805086
文献标志码:
A
摘要:
为探讨对向施工隧道贯通前开挖面存在的相互影响对地层稳定性的变化规律,本文将该问题假定为沿隧道纵向中线剖开的二维平面应变模型,采用刚体平动运动单元上限有限元法开展计算分析,获得了土体自重作用下地层临界失稳状态对应的隧道开挖面稳定性系数Ncr和有效间断线网破坏模式,以单元速度云图和速度矢量图形式呈现了典型破坏模式下速度场分布的特征。研究发现:对向开挖面间距比S/D对稳定性系数Ncr有显著影响,隧道埋深比H/D和土体内摩擦角φ对其亦有影响。在转换间距比Str/D附近,稳定系数Ncr值差别不大,但破坏模式形态和范围差异明显。本研究为对向施工隧道贯通前的稳定性评价、选取合理预加固方案等工作提供理论支撑。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-05-20。
基金项目:国家自然科学基金项目(51878669).
作者简介:孙雁军,男,博士研究生;阳军生,男,教授,博士生导师;杨峰,男,副教授.
通讯作者:杨峰,E-mail:yf5754@126.com
更新日期/Last Update: 2019-07-04