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[单选题]
垂线平均流速计算,当采用三点法时,取相对水深()处的平均值。
A.0.2,0.6,0.8
B.0.2,0.4,0.6
C.0.4,0.5,0.6
D.0.4,0.6,0.8
查看答案
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A.0.2,0.6,0.8
B.0.2,0.4,0.6
C.0.4,0.5,0.6
D.0.4,0.6,0.8
A.当距径比不大于6时,桩基沉降计算应采用等效作用分层总和法
B.等效作用面应取桩端平面,其面积为桩群外包洛线围成的面积
C.附加应力应近似取承台底平均附加压力
D.应力计算应采用角点法,沉降计算应采用分层总和法