计算基础承载力一般采用的公式有以下几种: 1.由朗肯土压力理论推得的朗肯公式; 2.赖斯纳承载力公式; 3.考虑凝聚力时采用卡科承载力公式。 另外,在计算地面条形基脚地基极限承载力时有以下公式: 1.普朗特尔公式; 2.太沙基公式。 现介绍上述五个公式中的四个公式,即 a.朗肯公式 The formulas for calculating the basic bearing capacity are as follows: 1. Rankine’s formula derived from Rankine’s earth pressure theory; 2. The formula of Ryerson’s bearing capacity; 3. The formula of bearing capacity of Carko when considering cohesion. In addition, there are the following formulas in calculating the ultimate bearing capacity of ground-based footing: 1. Plantel’s formula; 2. Beshaw formula. Now introduce four of the above five formulas, that is, a. Rankine formula