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首页> 外文期刊>Tunnelling and underground space technology >Ground reaction curves for tunnels excavated in different quality rock masses showing several types of post-failure behaviour
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Ground reaction curves for tunnels excavated in different quality rock masses showing several types of post-failure behaviour

机译：在不同质量岩体中开挖的隧道的地面反应曲线显示出几种类型的破坏后行为

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摘要

Rock mass behaviour model selection and, in particular, rock mass post-failure behaviour are key issues in analysing tunnel stability, in particular in terms of the correct application of design techniques such as the convergence-confinement method and also numerical modelling. Three different quality rock masses (good, average and poor) were defined in which simulated standard tunnels were excavated. Different behaviours - including elastic perfectly plastic, elastic brittle and three strain softening behaviours -were modelled for each type of rock mass and increasingly realistic parameters were calculated, along with the corresponding ground reaction curves. The results obtained demonstrate the importance of adequate post-failure behaviour model selection for tunnel analysis. Also assessed are the effects of the standard support and reinforcement.
机译：岩体行为模型的选择，尤其是岩体破坏后的行为，是分析隧道稳定性的关键问题，尤其是在正确运用设计技术（例如收敛约束方法和数值建模）方面。定义了三种不同质量的岩体（好，中，差），其中开挖了模拟标准隧道。对每种岩体建模了不同的行为，包括弹性完全塑性，弹性脆性和三种应变软化行为，并计算了越来越逼真的参数以及相应的地面反应曲线。获得的结果证明了适当的失效后行为模型选择对于隧道分析的重要性。还评估了标准支撑和加固的效果。

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  • 来源
    《Tunnelling and underground space technology》 |2009年第6期|689-705|共17页
  • 作者

    L.R. Alejano; A. Rodriguez-Dono; E. Alonso; G. Fdez.-Manin;

  • 作者单位

    Department of Natural Resources and Environmental Engineering, ETSI Minas. Campus Lagoas-Marcosende s, University of Vigo, 36280 Vigo, Spain;

    Department of Natural Resources and Environmental Engineering, ETSI Minas. Campus Lagoas-Marcosende s, University of Vigo, 36280 Vigo, Spain;

    Department of Natural Resources and Environmental Engineering, ETSI Minas. Campus Lagoas-Marcosende s, University of Vigo, 36280 Vigo, Spain;

    Applied Maths II Department, Campus Lagoas-Marcosende s, University of Vigo, 36280 Vigo, Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ground reactions curves; post-failure behaviour; strain softening;

    机译：地面反应曲线;故障后的行为;应变软化;

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