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作者遗过对镇海淤泥质粘土的室内三轴试验和现场十字板试验得到粘性土的各向异性主要表现在粘聚力上,而摩擦角的各向异性是不明显的,粘聚力随着深度呈线性变化。利用塑性原理推导了一组适用于各向异性、非匀质性的刚—塑性材料的双曲线型微分方程。根据这些方程,利用数值方法可以计算条形基础的极限承载力。结果表明土的抗剪强度的各向异性和非匀质性对条形基础的极限承载力和应力特征线有较大的影响。
The authors have relied on indoor triaxial tests and cross-slab experiments on Zhenhai silty clay to obtain the anisotropy of cohesive soil mainly manifested in the cohesion force, but the anisotropy of the friction angle is not obvious, and the cohesion The depth changes linearly. Using the plastic principle, a set of hyperbolic differential equations for anisotropic and inhomogeneous rigid-plastic materials is deduced. Based on these equations, the ultimate bearing capacity of a strip foundation can be calculated using numerical methods. The results show that the anisotropy and inhomogeneity of the shear strength of soil have a great influence on the ultimate bearing capacity and stress characteristics of the strip foundation.