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首页> 外文期刊>Key Engineering Materials >Finite Element Analysis of Dongjusi Railway Tunnel within Hard Rock Mass Based on the Unified Rock Mass Strength Criterion
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Finite Element Analysis of Dongjusi Railway Tunnel within Hard Rock Mass Based on the Unified Rock Mass Strength Criterion

机译：基于统一岩体强度判据的东si寺铁路硬岩隧道有限元分析

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摘要

The twin shear strength criterion has been proposed to consider the intermediate principal stress effect on the rock mass strength. The unified rock mass strength criterion could consider the intermediate principal stress effect on the rock mass strength. The unified rock mass elasto-plastic material model is implemented in ABAQUS user interface. As a case for study, the stability analysis of Dongjusi railway tunnel within hard rock mass is studied using the unified rock mass strength material. For comparison, the Hoek-Brown empirical strength criterion is also chosen for the rock mass material modeling. The computation results show that the plastic zone calculated using the unified rock mass strength criterion is smaller than that using the Hoek-Brown empirical strength criterion. The railway tunnel lining structure is designed according to the unified rock mass strength criterion and greatly makes use of the rock mass potential strength, which decreases engineering cost.
机译：提出了双剪切强度准则，以考虑中间主应力对岩体强度的影响。统一的岩体强度准则可以考虑中间主应力对岩体强度的影响。统一的岩体弹塑性材料模型在ABAQUS用户界面中实现。作为研究案例，采用统一的岩体强度材料对东ju寺铁路隧道在硬岩体内的稳定性进行了研究。为了进行比较，还选择了Hoek-Brown经验强度准则进行岩体材料建模。计算结果表明，采用统一岩体强度准则计算的塑性区小于采用Hoek-Brown经验强度准则计算的塑性区。铁路隧道衬砌结构是按照统一的岩体强度标准设计的，并充分利用了岩体的潜在强度，降低了工程造价。

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