有软弱下卧层时确定天然地基上基础底面积的简便方法

Handy Way to Determination of Foundation Footing Area on Natural Ground When Existing Weak Sub Layer

在进行天然地基上浅基础的设计时,必须验算地基承载力。如果存在软弱下卧层,还必须进行软弱下卧层承载力验算。

As designing the shallow foundation on natural ground, it＇s indispensable to check computation of beating capacity of ground. If the weak sub layer exists, the cheking computation of bearing capacity of the sub layer is still necessary. Based on stipulations correlative to calculation of ground bearing capacity and checking com- putaion of weak sublayer in＂ Design Specification for Ground Foundation Building＂, the paper derives a simple and convenient method of calculation ,which might directly and accurately figure out the foundation footing area meeting the requirements without needing repeated checking computation.