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首页> 外文会议>International symposium on deformation characteristics of geomaterials;IS-Seoul 2011 >Modelling the stress versus displacement behavior of shallow foundations in unsaturated coarse-grained soils
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Modelling the stress versus displacement behavior of shallow foundations in unsaturated coarse-grained soils

机译：非饱和粗粒土中浅层基础应力与位移关系模型

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Oh and Vanapalli (2010) proposed a simple methodology to simulate the stress versus displacement (SVD) behavior of model footings in unsaturated sands extending finite element analysis (FEA) using elastic-perfectly plastic model. The analyses were performed assuming soil as a single layer with average matric suction value (i.e. constant total cohesion and elastic modulus with respect to depth). In the present study, the proposed methodology has been extended successfully to simulate the SVD behaviors of in-situ footing (B × L = 1m × 1m) load tests in unsaturated sand. In addition, details of how to estimate the variation of total cohesion and elastic modulus with respect to matric suction, which are two key factors that influence the SVD behavior of plate load tests in unsaturated sands, are discussed.
机译：Oh和Vanapalli（2010）提出了一种简单的方法来模拟非饱和砂中模型基础的应力与位移（SVD）行为，并使用弹性完美塑性模型扩展了有限元分析（FEA）。假设土壤为具有平均基质吸力值（即相对于深度恒定的总内聚力和弹性模量）的单层土壤，进行分析。在本研究中，所提出的方法已成功地扩展，以模拟非饱和砂土中现场立足（B×L = 1m×1m）载荷试验的SVD行为。此外，还讨论了如何估算相对于基质吸力的总内聚力和弹性模量的变化的细节，这是影响非饱和砂中板载荷试验的SVD行为的两个关键因素。

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