天津市土建造价员建筑工程预算基价第二章1
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挖土工程量计算训练例题4
挖深H=1.70+0.40-0.45=1.65m
1.65>1.40应计算放坡
如采用机械挖土,则放坡系数1:0.72
可采用公式:V=H/3[S上+S下+(S上×S下)1/2]
S下=A×B=30.88×14.38=444.0544m2
S上=a×b=(30.88+1.188×2)×(14.38+1.188×2)=557.2375m2
H=1.70+0.40-0.45=1.65m
V=H/3[S上+S下+(S上*S下)1/2]
=1.65÷3×[557.2375+444.0544+(557.2375×444.0544)1/2]
=0.55×[557.2375+444.0544+497.4372]
=824.30m3
注:a=2KH+A(K=0.72H=1.65)
b=2KH+B(K=0.72H=1.65)
运用其他计算公式计算
V=A×B×H+(A+B)×K×H2+4/3K2H3
=30.88×14.38×1.65+(30.88+14.38)×0.72×1.65×1.65+4/3×0.722×1.653
=732.6898+88.7187+3.1050
=824.51m3
V=H/6(S上+S下+4S中)
=1.65÷6×(557.2375+444.0544+4×499.2346)
=824.51m3
挖土工程量计算训练例题4
挖深H=1.70+0.40-0.45=1.65m
1.65>1.40应计算放坡
如采用机械挖土,则放坡系数1:0.72
可采用公式:V=H/3[S上+S下+(S上×S下)1/2]
S下=A×B=30.88×14.38=444.0544m2
S上=a×b=(30.88+1.188×2)×(14.38+1.188×2)=557.2375m2
H=1.70+0.40-0.45=1.65m
V=H/3[S上+S下+(S上*S下)1/2]
=1.65÷3×[557.2375+444.0544+(557.2375×444.0544)1/2]
=0.55×[557.2375+444.0544+497.4372]
=824.30m3
注:a=2KH+A(K=0.72H=1.65)
b=2KH+B(K=0.72H=1.65)
运用其他计算公式计算
V=A×B×H+(A+B)×K×H2+4/3K2H3
=30.88×14.38×1.65+(30.88+14.38)×0.72×1.65×1.65+4/3×0.722×1.653
=732.6898+88.7187+3.1050
=824.51m3
V=H/6(S上+S下+4S中)
=1.65÷6×(557.2375+444.0544+4×499.2346)
=824.51m3
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