The direct calculation formulas of the rectangular foundation containing weak underlying stratum are induced and a computer program is developed.
推导出具有软弱下卧层土矩形基础的直接计算公式，编制了相应的计算机程序。
When there is weak underlying stratum bellowed the soil which is not be reinforced, the weak underlying stratum should be taken checking computations.
当桩端未加固土层以下有软弱下卧层时，应对其进行软弱下卧层验算；
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