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在复杂的隧道施工的现代设计中,利用三维有限元分析(3D FEA)是最好的做法,其主要优点是能够了解实际施工过程的影响和十分重要的三维效果,三维效果是指在建隧道与相邻的既有结构之间的相互作用以及非均质地层的影响。另一方面,二维有限元分析(2D FEA)可以作为简化模型进行计算,只要设计者认识到二维有限元模型的假定和局限性,计算表明,它可以用来校正、补充三维模型,甚至在某些情况下取代三维模型。
In the modern design of complex tunnel construction, the use of 3D FEA is the best practice. Its main advantage is that it can understand the impact of the actual construction process and the very important three-dimensional effect. The three-dimensional effect refers to the tunnel under construction The interaction with adjacent existing structures and the influence of heterogeneous formations. On the other hand, two-dimensional finite element analysis (2D FEA) can be calculated as a simplified model. As long as the designer realizes the assumptions and limitations of the two-dimensional finite element model, calculations show that it can be used to correct and supplement three-dimensional models, In some cases replace the three-dimensional model.