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当计算完全饱和粘性土的被动土压力时,通常土体是不固结的(不排水条件下),此时水平正应力 σx 由下式确定:
其中:
σx
-
总水平正应力
σz
总竖向正应力
Kuc
土压力系数
cu
土体不排水抗剪强度
土压力系数 Kuc 由下式计算:
au
结构与土体间的总粘结力