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为了解土壤极限承载能力与其相关破坏机制,以研发之有限元分析程序同时考虑多段式无厚度界面元,其界面力学行为遵循莫尔–库仑破坏准则,并配合极限分析理论,模拟土壤破坏滑移面力学行为与各种不同几何之破坏机制,进而应用于土壤浅基础和边坡浅基础之极限承载力计算。经由分析结果显示,使用有限元配合多段式无厚度界面元之分析模式,可藉由网格优化程序进行土壤极限分析与破坏机制之模拟,不仅可以了解土壤之渐进破坏行为,亦能计算出土壤极限承载力之最小上限值,且有限元分析计算结果与极限分析上限值相互符合。
In order to understand the ultimate bearing capacity of soil and its related failure mechanism, the finite element analysis program of R & D was used to consider the multi-stage interfaceless element. The interface mechanical behavior followed the Mohr-Coulomb failure criterion and combined with the limit analysis theory, Surface mechanics behavior and various kinds of geometric damage mechanism, and then applied to the shallow foundation of soil and shallow foundation of the ultimate bearing capacity calculation. The results of the analysis show that using finite element analysis model with multi-stage non-thickness interface elements can simulate the soil limit analysis and failure mechanism by using the mesh optimization program. It can not only understand the gradual destructive behavior of soil, but also calculate the soil The minimum upper limit of ultimate bearing capacity, and the results of finite element analysis and upper limit of limit analysis are consistent with each other.