The direct earth pressure should be calculated by analysis of minor principal stress arch while the indirect earth pressure by analysis of major principal stress arch.
可用小主应力拱应力分析计算直接土压力，用大主应力拱应力分析计算间接土压力。
The direct earth pressure should be calculated by analysis of minor principal stress arch while the indirect earth pressure by analysis of major principal stress arch.
可用小主应力拱应力分析计算直接土压力，用大主应力拱应力分析计算间接土压力。
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