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由均布面超载作用引起的主动土压力增加值为:
其中:
p
-
竖向均布超载值
Ka
主动土压力系数
由作用于地表的竖向均布压力 p 引起的整个结构上主动土压力的恒定增量如下图所示:
由作用于地表的竖向均布面超载引起的主动土压力增量