Analysis on Underground Caves for 2D and 3D Model
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摘要: 地下复杂洞室群的分析与计算是一个三维问题,但受计算机容量、三维网格剖分的复杂性、软件的计算能力等因素制约,实际计算时常常采用平面应变模型代替复杂的三维模型。两种模型计算得到的塑性区范围是不同的。从理论上通过Drucker-Prager屈服准则比较证明了这两种模型的差异,得到平面应变模型塑性区比三维模型塑性区大的结论。Abstract: The analysis and calculation on underground caves is absolutely a 3D problem, but a 2D model is usually applied to substitute for the 3D model. This paper discusses the difference of the two models on the basis of Drucker-Prager Rule and a conclusion is achieved that the plastic region of 2D model is bigger than 3D model.
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Key words:
- underground caves /
- plane strain /
- 3D FEM
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