Ultimate bearing capacity of shallow foundations under inclined and eccentric loads. I: Purely cohesive soil
Ultimate bearing capacity of shallow foundations under inclined and eccentric loads. I: Purely cohesive soil
复制标题
浅基础在倾斜和偏心荷载作用下的极限承载力。
DOI：
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发表时间：
1995
影响因子：
4.1
通讯作者：
A. Pecker
中科院分区：
文献类型：
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作者：
J. Salençon;A. Pecker
在屈服设计理论的框架内，根据Tresca的强度准则，假定土壤是纯粘性的，解决了位于均匀半空间表面上并承受倾斜偏心荷载的条形基础承载力的确定问题。根据相应的强度准则，土与地基的接触面也是粘性的。屈服设计理论的静力学和运动学方法都用来推导极限承载力的上下限。对于倾斜的中心荷载，推导出了一个几乎精确的解;对于荷载偏心率的增加值，极限承载力只能用括号表示，但从工程的角度看，在足够的精度范围内必须确定极限承载力。在一个配套文件中，同样的问题是解决了土壤和界面的张力截止。这两个解代表了纯粘性土抗拉强度的极限情况，可以用来计算承载力随土抗拉强度的变化
The problem of determining the bearing capacity of a strip footing resting on the surface of a homogeneous half space and subjected to an inclined, eccentric load is solved within the framework of the yield design theory, assuming the soil to be purely cohesive according to Tresca's strength criterion. The soil foundation interface is also cohesive, in terms of the homologous strength criterion. Both the static and kinematic approaches of the yield design theory are used to derive lower and upper bounds for the ultimate bearing capacity. For an inclined centered load, an almost exact solution is derved; for increasing values of the load eccentricities, the ultimate bearing capacity can only be bracketed but neverthless determined within a sufficient degree of accuracy from an engineering standpoint. In a companion paper, the same problem is solved for a soil and an interface with a tension cut-off. These two solutions represent extreme conditons for the tensile resistance of the purely cohesive soil and could be used to bracket the variations of the bearing capacity as a function of the soil tensile strength