隧道特征线法的修正与发展

doi:10.13722/j.cnki.jrme.2013.1453

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摘要传统的特征线法将初衬作为弹性构件，而实际隧道工程初衬变形远大于弹性变形，必然会进入塑性阶段。为此将初衬视作弹塑性材料对传统特征线法进行修正，并应用数值极限分析方法求解隧道围岩的安全系数，由此可获得严格力学计算下修正的围岩和初衬的特征曲线及其围岩压力。提出的基于强度折减数值极限分析的修正特征线法完全可以定量地解决隧道工程设计计算问题，为隧道设计提供理论基础和计算方法。

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关键词 ：隧道工程, 数值极限分析法, 有限元强度折减法, 隧道特征线法, 围岩安全系数, 初衬

Abstract：The traditional characteristic line method takes the preliminary lining as elastic component. But infact so the deformation of preliminary lining in practical tunnel engineering is much bigger than elastic deformation and the preliminary lining would be in the plastic state. Preliminary lining is considered as elastic-plastic materials to correct the traditional characteristic line method and numerical limit analysis is conducted to work out the safety factor of tunnel surrounding rock. Thus the corrected characteristic curve of surrounding rock and the pressure on the surrounding rock and preliminary lining can be obtained through strict mechanic calculation. The corrected characteristic line method through numerical limit analysis based on FEM strength reduction can solve the problem of design and calculation of tunnel engineering quantitatively，which provides theoretical basis and calculation method for the tunnel design.

Key words： tunnelling engineering numerical limit analysis method FEM strength reduction method of characteristic line safety factor of surrounding rock preliminary lining

引用本文:

阿比尔的1，2，郑颖人2，冯夏庭1，向钰周2. 隧道特征线法的修正与发展[J]. 岩石力学与工程学报, 2015, 34(s1): 3067-3073.
ABI Erdi1，2，ZHENG Yingren2，FENG Xiating1，XIANG Yuzhou2. MODIFICATION AND DEVELOPMENT OF CHARACTERISTIC LINE METHOD OF TUNNEL. , 2015, 34(s1): 3067-3073.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2013.1453 或 http://www.rockmech.org/CN/Y2015/V34/Is1/3067

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