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基于极限平衡法和极限分析法理论,建立了一个新的能考虑坡后土体坡度影响的斜坡地基承载力计算模式,推导出一个上限解公式,并与有限元方法和其他上限解计算结果进行了比较分析。分析结果表明,所得结果与斜坡地基极限承载力的真实解较为接近,能较好地反映实际的斜坡地基的承载力。此外,编制斜坡地基坡后土体发挥系数的计算程序,分析了斜坡地基内摩擦角、基础下侧土体坡度、基础上侧土体坡度、相对坡顶距及基础相对埋深等因素对斜坡地基极限承载力上限解的影响,得到了不同情况下斜坡地基的承载力系数和坡后土体的发挥系数。研究成果可用于斜坡地基的理论分析,为斜坡地基的设计提供依据。
Based on the theory of limit equilibrium method and limit analysis method, a new calculation model for bearing capacity of slope foundation considering slope effect of soil after slope is established. A formula of upper bound solution is deduced and compared with the results of finite element method and other upper bound solutions A comparative analysis. The analysis results show that the obtained results are close to the true solution of the ultimate bearing capacity of the slope foundation, which can well reflect the actual bearing capacity of the slope foundation. In addition, the calculating program of the coefficient of soil play after slope foundation slope slope slope slope slope is compiled, and the influence factors such as the friction angle of the slope foundation, the soil slope under the foundation, the slope of the soil foundation at the top side, the relative top pitch, The influence of the upper limit solution of the ultimate bearing capacity of the foundation is obtained, and the bearing capacity coefficient of the slope foundation and the play coefficient of the sloping soil under different conditions are obtained. The research results can be used in the theoretical analysis of slope foundation to provide the basis for the design of slope foundation.