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) ›› 2008, Vol. 27 ›› Issue (2): 225-227,289.

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长冲隧道进口段开挖方法的优化分析

范小伟, 徐林生   

  1. 重庆交通大学 土木建筑学院, 重庆 400074
  • 收稿日期:2007-06-20 修回日期:2007-08-06 出版日期:2008-04-20 发布日期:2016-11-14
  • 作者简介:范小伟(1981-),男,河北唐山人,硕士研究生,主要从事隧道工程方面研究。E-mial:zmjfxw@163.com;手机:13658367045。

Optimal Analysis on Entrance Construction Scheme for Changchong Tunnel

FAN Xiao-wei, XU Lin-sheng   

  1. School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2007-06-20 Revised:2007-08-06 Online:2008-04-20 Published:2016-11-14

摘要: 根据隧址区工程地质特征,建立了长冲隧道进口段的有限元模型;模拟了台阶分部法和CD工法开挖隧道的过程,通过对围岩的位移和应力特征、屈服接近度和支护结构受力特征的分析,从施工工序和施工力学角度对两种开挖方法进行了比较,结果表明设计推荐采用的CD工法较台阶分部法没有明显的优势。

关键词: 长冲隧道, 台阶分部法, CD工法, 数值模拟

Abstract: Based on engineering geological feature of tunnel setting, a finite element of entrance of Changchong tunnel is established, which can simulate the construction process under the bench method and CD method. Displacement, stress, characteristics of yield degree of surrounding rock and the force of supports structure are analyzed. Construction process and stress of these two methods are compared so as to optimize the practical construction scheme. The result indicates that bench method is better than CD method.

Key words: Changchong tunnel, bench method, CD method, numerical modeling

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