【摘要】 基于Mohr-Coulomb本构模型,针对吸力式斜壁桶形基础建立了三维有限元数值计算模型,并通过模型试验数据进行了验证。在此基础上,细致地进行了数值计算与分析,探讨了长径比、桶壁斜率等相关影响因素与饱和软黏土中斜壁桶形基础承载力之间的依赖关系。同时以Vesic经验公式为基础,考虑桶体与相接触土体之间的黏结作用,提出了一个针对斜壁单桶基础的竖向承载力公式,公式结果与有限元结果吻合较好。更多还原

【Abstract】 A numerical model of 3D FEM for suction tapered bucket foundations is established based on the Mohr-Coulomb constitutive criterion,and is also verified by model tests.On this basis,the analysis and computation are carried out,and the dependency relationship between the factors of aspect ratio and bucket slop and the bearing capacity of tapered bucket foundation in saturated soft clay is studied.Based on the empirical expression by Vesic,a vertical bearing formula for tapered single bucket foundations,with the action that the bucket is cohered with the contacted clay,is presented.A comparison shows that the calculated results of this formula is consistent with those of FEM.更多还原