软弱下卧层上天然地基底面积验算的简便方法

The Reduced Calculation Method of the Foundation Area above soft Sub-base

在天然地基浅基础设计验算地基承载力时,如果存在软弱下卧层,须验算软弱下卧层承载力。根据《建筑地基基础设计规范》中的相关规定,导出了可以直接满足软弱下卧层承载力要求的基础底面积计算的简便方法。

Ground beating capacity should be calculated before the design for the natural shallow foundation. If there is soft sub-base beneath,beating capacity of the sub-base should be checked. According to the rules in Foundation Design Standand of Building Ground, a reduced calculation method which can directly figure out the demanded foundation area is introduced.