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Bearing response of shallow foundations on structured soils

机译:浅层基础在结构性土壤上的承载响应

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The influence of soil structure on the bearing response of circular footings has been investigated using the Structured Cam Clay model. It was found that under drained conditions, failure of the soil beneath the footing occurs as a punching shear failure and under undrained conditions, failure occurs as a local shear failure. A parametric study has been carried out by varying the parameters which characterise the structural features of the soil. A method was presented to obtain the relationship between the bearing pressure and footing displacement for a circular footing resting on a structured soil deposit, provided the response of the same soil in the reconstituted state, is known. Application of the new method to a practical problem has been demonstrated. The bilinear bearing pressure curves predicted using the new method shows very good agreement with the finite element simulations.
机译:使用结构化凸轮粘土模型研究了土壤结构对圆形地基承载响应的影响。已经发现,在排水条件下,立足下面的土壤破坏以冲切剪切破坏的形式发生,而在不排水条件下,破坏以局部剪切破坏的形式发生。通过改变表征土壤结构特征的参数进行了参数研究。提出了一种方法,该方法可获取搁置在结构化土壤沉积物上的圆形立脚的支座压力与立脚位移之间的关系,前提是已知重建状态下相同土壤的响应。已经证明了该新方法在实际问题中的应用。用这种新方法预测的双线性轴承压力曲线与有限元模拟结果非常吻合。

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