A 3D finite element simulation model for TBM tunnelling in soft ground
A 3D finite element simulation model for TBM tunnelling in soft ground
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DOI：
10.1002/nag.395
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发表时间：
2004-12
影响因子：
4
通讯作者：
T. Kasper;G. Meschke
中科院分区：
文献类型：
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作者：
T. Kasper;G. Meschke
建立了盾构法隧道开挖的三维有限元仿真模型。该模型考虑了施工过程的所有相关组成部分（土壤和地下水、与土壤摩擦接触的隧道掘进机、液压千斤顶、隧道衬砌和尾部空隙灌浆）。本文详细介绍了模型的组成和模拟施工过程的分步步骤。使用双场有限元公式将土壤和灌浆材料建模为饱和多孔介质。这允许考虑地下水、灌浆压力以及切割面处土壤和泥浆之间以及尾部空隙周围土壤和灌浆之间的流体相互作用。使用Cam‐Clay塑性模型描述粘性土的材料特性。尾部空隙中的水泥灌浆材料被建模为具有随时间变化的刚度和渗透性的老化弹性材料。为了允许自动计算任意长的曲线驾驶路径与合适的有限元网格，模拟过程已经完全自动化。地下水位以下的软粘性土中的隧道推进的模拟，并与从文献中采取的测量结果进行比较。版权所有© 2004年约翰威利父子有限公司。
A three‐dimensional finite element simulation model for shield‐driven tunnel excavation is presented. The model takes into account all relevant components of the construction process (the soil and the ground water, the tunnel boring machine with frictional contact to the soil, the hydraulic jacks, the tunnel lining and the tail void grouting). The paper gives a detailed description of the model components and the stepwise procedure to simulate the construction process. The soil and the grout material are modelled as saturated porous media using a two‐field finite element formulation. This allows to take into account the groundwater, the grouting pressure and the fluid interaction between the soil and slurry at the cutting face and between the soil and grout around the tail void. A Cam‐Clay plasticity model is used to describe the material behaviour of cohesive soils. The cementitious grouting material in the tail void is modelled as an ageing elastic material with time‐dependent stiffness and permeability. To allow for an automated computation of arbitrarily long and also curvilinear driving paths with suitable finite element meshes, the simulation procedure has been fully automated. The simulation of a tunnel advance in soft cohesive soil below the ground water table is presented and the results are compared with measurements taken from the literature. Copyright © 2004 John Wiley & Sons, Ltd.