土木工程概预算 计算题

14.解：建筑面积S=15.18×9.18×7=975.47m22021/5/9115.

解:S地下室=（12.3+0.24）×(10+0.24)=128.41m2S出入口=2.1×0.8+6×2=13.68m2S=S地下室+S出入口=128.41+13.68=142.09m22021/5/9218.

解:S楼层=（27+0.24）×(15+0.24)×3/2=622.71m2S回廊=3.0×（27+0.24）×2+1.0×(15.0-0.24-3.0×2)×2=180.96m2

S=S楼层+S回廊=622.71+180.96=803.67m22021/5/9322.

解:S挑阳台=3.3×1×1/2=1.65m2S凹阳台=2.7×1.2×1/2=1.62m2S半挑半凹阳台=(3×1+2.52×1.2)×1/2=3.01m22021/5/9430.

解：(1)计算带形基础的计算长度外墙基础LW1=(9.00+4.80)×2=27.6m内墙基础Ln2=4.80-1.00=3.8mL=LW1+Ln2=27.6+3.8=31.4m(2)计算带形基础的断面积F=b×h=1.00×0.30=0.30㎡（3）计算带形基础的体积V=L×F=31.4×0.30=9.42m32021/5/9531.

(1)计算带形基础的计算长度外墙基础LW1=(21.00+13.50)×2=69M

内墙基础Ln2=(5.50-1.10-0.8)×12+(21.00-2.2)×2=43.20+37.6=80.8m2021/5/96(2)计算带基的断面积外墙基础f11=b1×h1=2.20×0.30=0.66㎡f12=1/2×(b1+b2)×h2=1/2×(2.20+0.6)×0.15=0.21㎡f13=b2×h3=0.6×0.4=0.24㎡f1=f11+f12+f13=0.66+0.21+0.24=1.11㎡内墙基础f21=1.60×0.3=0.48㎡f22=1/2×(1.60+0.46)×0.15=0.1545㎡f23=0.46×0.4=0.184㎡f2=f21+f22+f23=0.48+0.1545+0.184=0.8185㎡(3)Vt的计算

Vt1（内墙与外墙搭接）共16个根据图示已知：B=1.60m,b=0.46m,LD=0.8m,h2=0.15m,h3=0.4mVt1=LD×[b×h3+h2(2b+B)/6]=0.8×[0.46×0.4+0.15×(2×0.46+1.6)/6]=0.8×(0.184+0.063)=0.198㎡Vt2（内墙与内墙搭接）共12个根据图示已知：LD=0.57m,其它数据与Vt1相同。

Vt2=0.57×(0.184+0.063)=0.141m3Vt=0.198×16+0.141×12=3.168+1.692=4.86m32021/5/97（4）计算带基的体积

1）外墙基的体积VW1=LW1×fw1=69×1.11=76.59m32）内墙基的体积Vn2=ln2×fn2+Vt=80.8×0.8185+Vt=66.13+4.86=70.99m33)该工程内外墙混凝土带形基础总体积计算

V=VW1+Vn2=76.59+70.99=147.58m32021/5/9832.

2021/5/9932.解：外墙中心线：L中＝(3.3×3+5.1+1.5+3.3)×2＝39.6m构造柱可在外墙长度中扣除：L中＝39.6—0.24×11＝36.96m内墙净长线：L净＝(1.5+3.3-0.24)×2+3.3—0.24＝12.18m外墙高(扣圈梁)：H外＝3.9-0.3-0.2＝3.4m内墙高(扣圈梁)：H内＝0.9+1.8＝2.7m应扣门窗洞面积，取门窗表中的数据：F门窗＝7.2+16.2+7.56＝30.96m2则内外墙体工程量：V墙＝(L中×H外+L净×H内-F门窗)×0.24-VGL =(36.30×3.4+12.0×2.7-30.96)×0.24-0.24

＝29.73m32021/5/91034.2021/5/91134.解：（1）列项目：A4-22换C30现浇混凝土矩形柱；A4-40换C30现浇混凝土有梁板（定额中的混凝土强度等级为C20，故需换算）（2）计算预算工程量1)现浇柱KZ1：砼工程量=（8.6+1.85-0.35-0.4）×0.4×0.4×6=9.7×0.4×0.4×6=9.31m32)现浇砼有梁板砼量:KL1砼工程量=(6.0-0.4)×0.3×(0.4-0.1)×3=1.51m3KL2砼工程量=(9.0-0.4×2)×0.3×(0.4-0.1)×2=1.48m3KL3砼工程量=(9.0-0.3×2)×0.25×(0.3-0.1)×1=0.42m3现浇板砼量=(6.0+0.3)×(9.0+0.3)×0.1=5.86m3合计得现浇砼有梁板砼量:1.51+1.48+0.42+5.86=9.27m32021/5/91236.解：(1)φ12@150单根长度=3.0-2×0.035+6.25×2×0.012=3.01m

根数=(2.8-2×0.035)÷0.15+1=19根总长=3.01×19=57.19m

重量=57.19×0.888×20=1015.69Kg=1.015t(1)φ10@150单根长度=2.8-2×0.035+6.25×2×0.010=2.855m

根数=(3.0-2×0.035)÷0.15+1=21根总长=2.855×21=59.96m

重量=59.96×0.617×20=739.91Kg=0.740t2021/5/91337.2021/5/91437.解:基础内钢筋保护层厚度为35mm,钢筋搭接长度为35d(1)受力钢筋φ12@200:

单根长度=1.3-2×0.035+6.25×2×0.012=1.383m

纵向根数=[(9+1.3-2×0.035)÷0.2+1]×2=104根横向根数=[(6+1.3-2×0.035)÷0.2+1]×4=148根总长度=1.383×(104+148)=348.52m重量=348.52×0.888=309.49Kg=0.309t(2)分布钢筋φ6@200:纵向单根长度=3-1.3+2×(0.035+35×0.006)=2.19m横向单根长度=6-1.3+2×(0.035+35×0.006)=5.19m单根总长度=2.19×6+5.19×4=33.9m

根数=(1.3-2×0.035)÷0.2+1=7根总长度=33.9×7=237.3m重量=237.3×0.222=52.68Kg=0.053t2021/5/91538.解（1)桩内纵向钢筋6Φ20:单根长度=12.0+0.25-2×0.035+6.25×2×0.02=12.43m

总长=12.43×6=74.58m

重量=74.58×2.468=184.06Kg=0.184t

（2)箍筋Φ10@200:单根长度=3.14×(0.6-2×0.0