【摘要】 根据刚塑性体的静力平衡条件,在方形和条形浅基础地基极限承载力理论解的基础上,分别求出考虑黏聚力c、超载q和土的重度γ的地基极限承载力的理论表达式,叠加后推导了矩形浅基础地基极限承载力的理论解公式,从而得到了一种浅基础地基极限承载力通用解析解,并与Vesic、Hansen、Meyerhof等半经验修正方法进行了分析对比,得到了不同长宽比下,系数Nq,Nc,Nr与土的内摩擦角的变化关系以及不同内摩擦角情况下,系数Nq,Nc,Nr与矩形浅基础长宽比的变化关系曲线。结果表明曲线变化趋势基本相同,且与Vesic半经验公式解非常接近,从而证明了本文理论解的正确性。更多还原

【Abstract】 Considering the influences of three factors: cohesion c,over loading q,and density of the soil,a new universal analytical solution of shallow foundation is presented based on the static equilibrium of rigid-plasticity body with the theoretical solution of shallow square foundation and strip foundation.The variation tendency of curves are similar to that of semi-empiric Vesic,Hansen and Meyerhof solutions,and the curves among Nq,Nc,Nr and internal friction angle of soil and ratio of length and width of rectangle foundation are gained.The results of this solution agree with the semi-empiric Vesic solution.更多还原