【摘要】 模拟分析黄土隧洞围岩稳定性对了解黄土隧洞变形破坏机理,对黄土隧洞设计施工理论具有重要意义。采用粘弹塑性模型对黄土隧道围岩进行有限元分析,研究围岩的变形规律,探讨围岩位移场分布,并同真实试验黄土隧道的侧面无衬砌和半衬砌两种工况各 3 种状态的变形破坏结果进行比较,发现用有限元方法模拟的结果与真实隧道的变形破坏过程基本吻合,此结果可为类似的黄土隧道工程的设计施工提供参考。更多还原

【Abstract】 It is important to analyze the stability of surrounding loess of tunnel for understanding its failure mechanism and for its design and construction. The stability of surrounding loess of tunnel using visoelasto-plastic constitutive model has been studied on its deformation distribution. Compared with the experimental description of deformation of surrounding loess of tunnel for a variety of geometry configuration in situ, The calculated results are coincident with the experimental results so as to help the design and construction of loess tunnels.更多还原