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；
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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