题目内容

有一墙背直立的重力式挡土墙,墙后填土由上下两层土组成,如图所示,γ、c、φ、平分别表示土的重度,内聚力及内摩擦角,如果C1≈0,C2>0,问只有在下列()种情况下用郎肯土压力理论计算得到的墙后主动土压力分布才有可能从上而下为一条连续的直线。

A. γ1>γ2,φ1>φ2
B. γ1>γ2,φ1φ2
C. γ1

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