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将土的各向异性不排水剪强度应用到滑移线场理论中,得出不等向团结(K_0固结)粘土地基极限承载力系数的理论解.对不同试验条件下的极限承载力系数及其与K_O或(?)(有效内摩擦角)的关系进行分析,得到一些有益的结果.通过模型试验的计算结果与实测值的比较,证明本文理论的合理性和有效性.理论分析及计算结果表明,对于K_0固结粘土,实践中通常使用的极限承载力系数N_(cu)=5.14,如不经修正是不适宜的.最后通过现场载荷试验和工程实例对本文方法和常规各向同性方法进行了比较分析.
Applying the anisotropic and undrained shear strength of soil to the slip line field theory, the theoretical solution of the ultimate bearing capacity coefficient for an unequal solidarity (K_0 consolidated) clay foundation is obtained. The ultimate bearing capacity coefficient under different test conditions is obtained. And its relationship with K_O or (?)(effective internal friction angle) is analyzed to obtain some beneficial results. The comparison between the calculated results of the model test and the measured values proves the rationality and effectiveness of the theory. The calculation results show that for the K_0 consolidated clay, the ultimate bearing capacity coefficient N_(cu) commonly used in practice is 5.14, which is unsuitable if it is not modified. Finally, the method and conventional an Same-sex methods were compared and analyzed.