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Three dimensional finite element analysis of the influence of the umbrella arch on the settlements induced by shallow tunneling

机译:伞拱对浅埋隧道诱发沉降影响的三维有限元分析

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This paper presents an analysis of the influence of the umbrella arch on the settlements induced by shallow tunneling, based on three-dimensional finite element simulations using CESAR-LCPC. The approach takes into account the actual geometry of the umbrella arch and the lining, and the various aspects of staged construction, notably the cycle of installation of the pipes. The results show that the influence of the umbrella arch on the settlements remains modest, at least for the range of parameters adopted in this study. Also, the results show that the numerical analysis can be carried out with a simplified geometry.
机译:基于CESAR-LCPC的三维有限元模拟,本文分析了伞形拱对浅埋隧道诱发沉降的影响。该方法考虑了伞形拱和衬砌的实际几何形状以及分阶段施工的各个方面,特别是管道的安装周期。结果表明,至少在本研究采用的参数范围内,伞形拱对定居点的影响仍然很小。而且,结果表明可以用简化的几何形状进行数值分析。

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