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首页> 外文期刊>International Journal of Advances in Engineering Sciences and Applied Mathematics >Application of a kinematic-cyclic plasticity model in simulating sand liquefaction
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Application of a kinematic-cyclic plasticity model in simulating sand liquefaction

机译：运动循环可塑性模型在砂土液化模拟中的应用

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The mechanical behavior of saturated soil is mainly governed by the interaction between the soil skeleton and the pore fluid, and this interaction may lead to significant loss of strength known as liquefaction under seismic loading conditions. The main objective of this paper is to implement a cyclic constitutive model based on fuzzy set plasticity theory, which is capable of modeling soil dilatancy during earthquake excitation. A numerical study of sand liquefaction was performed and compared with centrifuge-based experimental results. The proposed formulation is capable of capturing the features of pore water pressure buildup and strength loss in granular soil deposit under cyclic loading. The numerical model was verified by the centrifuge tests. The good match of the numerical results and the centrifuge experimental data shows that the fuzzy set model is an effective tool for assessing liquefaction potential and liquefaction-related motions.
机译：饱和土壤的力学行为主要受土壤骨架与孔隙流体之间的相互作用支配，这种相互作用可能导致在地震载荷条件下显着的强度损失，即液化。本文的主要目的是实现基于模糊集可塑性理论的循环本构模型，该模型能够对地震激发过程中的土壤膨胀进行建模。进行了砂土液化的数值研究，并与基于离心机的实验结果进行了比较。所提出的配方能够在循环荷载下捕捉粒状土壤沉积物中孔隙水压力建立和强度损失的特征。通过离心试验验证了数值模型。数值结果与离心机实验数据的良好匹配表明，模糊集模型是评估液化潜力和液化相关运动的有效工具。

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