2.1 Introduction(前言) Ultimate bearing capacity (q)is defined as the pressure which would cause shear failure of the supporting soil immediately below and adjacent to a foundation. 压力增大到极限承载力时，地基出现剪切破坏) A foundation must satisfy two fundamental requirements: 计基础要两足两个婆求) the factor of safety Fs against shear failure of the supporting soil must be adequate,a value between 2 通 and3 normally being specified(地基达到剪切破坏的 全系数F。要适当， 般在2至3乙间 超2.1 Introduction (前言) ▪ Ultimate bearing capacity (qu ) is defined as the pressure which would cause shear failure of the supporting soil immediately below and adjacent to a foundation. (当基底 压力增大到极限承载力时,地基出现剪切破坏) ▪ A foundation must satisfy two fundamental requirements: (设计基础要满足两个要求 ) ▪ the factor of safety Fs against shear failure of the supporting soil must be adequate, a value between 2 and 3 normally being specified (地基达到剪切破坏的 安全糸数 Fs要适当,一般在2至3之间 )