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【单选题】
有 一墙背垂直、光滑的挡土墙,墙高 H = 8m ,墙后水平填土的有效内摩擦角 φ ʹ=30° ,黏聚力 c ʹ=13kPa ,土的 18.0kN/m 3 ,当墙静止时作用在墙背上的总静止土压力为()。A.
288.1 kN/m
B.
288.1 kPa
C.
72 kN/m
D.
72 kPa
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