中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2011, Vol. 30 ›› Issue (2): 217-220.DOI: 10.3969/j.issn.1674-0696.2011.02.08

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车行横洞与隧道主洞交叉段局部失稳数值分析

刘山洪,陈寅春,李刚   

  1. 重庆交通大学土木建筑学院, 重庆400074
  • 收稿日期:2010-12-28 修回日期:2011-03-02 出版日期:2011-04-15 发布日期:2015-03-12
  • 作者简介:刘山洪(1968 — ),男,重庆垫江人,副教授,博士后,主要从事桥梁隧道的稳定性分析及智能桥梁研究工作。E-mail:shanghongliu@hotmai.lcom。

Numerical Analysis of Local Stability at Intersection Parts of Tunnel

LIU Shanhong, CHEN Yinchun, LI Gang   

  1. School of Civil Engineering&Architecture, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2010-12-28 Revised:2011-03-02 Online:2011-04-15 Published:2015-03-12

摘要: 以重庆涪陵聚云山隧道车行横洞与主洞交叉段施工出现裂缝为工程背景,对隧道内结构受力行为复杂的交 叉段,采用数值分析方法建立三维有限元模型,分析该处结构的变形及应力分布状态。分析结果表明:地应力和结 构应力集中是导致局部开裂并影响交叉段稳定性的两大关键因素,通过对交叉段实施加固措施可有效地保证结构 的稳定性,同时给出提高交叉段稳定性在设计和施工方面的建议。

关键词: 隧道交叉段, 稳定性, 应力集中, 屈服破坏

Abstract: A case study was carried out in intersection parts between them a in tunnel and the transverse tunnel for truck of Juyunshan Tunnel in Fuling, Chongqing. Distributions of deformation and stresses in these parts caused by complex forces were presented; numerical analysis method with 3D finite element model was employed. The analys is results indicated that earth gravity of tunnel and structural loads were mainly responsible for local cracking and stability of ntersection parts. Safety of the structure and stab ility could be guaranteed by streng then ingm eans in the parts; seve ra l proposa ls of improv ing the stability o f intersection parts both in design ing and constructing we re presented.

Key words: intersection parts of tunnel stability, stress concentration, yield failure

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