施工组织设计下载简介
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地基处理设计与施工方案n=[(ƒsp,k╱αβƒka)-1]╱m+1
=[(322.8╱1.1×0.9×160)-1]╱0.039+1
σp=nαβƒka=27.6×1.1×0.9×160=4371.8kpa
⑶桩体强度(混凝土:C20):
DLT 345-2019 带电设备紫外诊断技术应用导则.pdf13.4N/mm2>3×4371.8╱103=13.1N/mm2(可)
式中:ƒck——混凝土轴心抗压强度标准值。
Pp=nαβƒkaAp
=27.6×1.1×0.9×160×0.126=550.9kpa
ι′=(Pp-qpAp)╱upqs
=(550.9-400×0.126)╱1.26×40
=9.93<17.0m(可)
A=AP╱m=0.126╱0.039=3.23m2
四边形排列:S=1.13√A=1.13×√3.23=1.80m(可)
六褥垫层虚铺厚度计算:
H′=H╱λ=200╱0.88=230mm
式中:H′——褥垫层虚铺厚度
λ——夯填度,一般取0.87~0.9
A座基础最终沉降量计算
1.桩长范围内各分层土的压缩模量:
6.6Mpa、8.5Mpa、15.0Mpa、9.5Mpa、35.0Mpa、10.3Mpaa
2.桩长范围内各分层土的厚度:
2.35m、4.57m、1.40m、4.94m、3.10m、13.64m
ζ=α[1+m(n-1)]
=1×[1+0.1×(25.9-1)]
三分层计算各层土的压缩量:
1.粉质粘土④层:该层顶面及底面各位于基础底面下Z=0及Z1=2.35m处。
A/B=50/25=2.0Z0/B=0查表C0=0.25
Z1/B=2.35/25=0.1查表C1=0.2499
ΔS1=P0/ES1ζ(C1Z1-C0Z0)
=0.55/6.6×3.49(0.2499×235-0.25×0)
=0.0239×58.73=1.40cm
2.粉质粘土⑤层:该层顶面及底面各位于基础底面下Z2=2.35m及Z3=6.92m处。
A/B=2.0Z4/B=6.92/25=0.28查表C4=0.2473
ΔS1=P0/ES1ζ(C3Z3-C2Z2)
=0.55/8.5×3.49(0.2473×692-0.2499×235)
=0.01854×112.4
3.砂质粉土—粉细砂⑥层:该层顶面及底面各位于基础底面下Z4=6.92m及Z5=8.32m处。
A/B=2Z4/B=8.32/25=0.33查表C4=0.248
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.55/15×3.49(0.248×832-0.2473×692)
=0.0105×35.2
4.粉细砂⑦层:该层顶面及底面各位于基础底面下Z5=8.32m及Z6=13.26m处。
A/B=2Z4/B=13.26/25=0.53查表C4=0.2442
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.55/9.5×3.49(0.2442×1326-0.248×832)
=0.01689×117.47
5.中砂⑧层:该层顶面及底面各位于基础底面下Z7=13.26m及Z8=16.36m处。
A/B=2Z4/B=16.36/25=0.65查表C4=0.2428
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.55/35×3.49(0.2428×1636-0.2442×1326)
=0.0045×73.41
6.粘土⑨层:该层顶面及底面各位于基础底面下Z7=16.36m及Z8=32.0m处。
A/B=2Z4/B=32/25=1.28查表C4=0.2237
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.55/10.3×3.49(0.2237×3200-0.2428×1636)
=0.0153×318.62
首先计算在深度Z=32m处向上取计算层厚为1.0m的土层压缩量△Sn′:
A/B=1.52Z′/B=31/25=1.24查表C′=0.2253
ΔSn′=P0/ES1ζ(C4Z4-C3Z3)
=0.55/10.3×3.49(0.2237×3200-0.2253×3100
=0.0153×17.41=0.266cm
ΔSn′/∑△Sί′=0.266/(1.40+2.08+0.37+1.95+0.33+4.88)=0.2944/11.01=0.0242
∵ΔSn′/∑ΔSί′=0.024<0.025
∴基础底面下32.0m即为压缩层厚度
1.压缩层范围内各土层压缩模量加权平均值:
ESP=(23.03×2.35+29.67×4.57+52.35×1.4+33.16
×4.94+122.15×3.1+35.95×15.64)/32
∵ESP=42.74Mpa>20.0Mpa
∴ΨS=0.2(1.40+2.08+0.37+1.95+0.33+4.88)
BCD座基础最终沉降量计算
1.基底压缩厚度范围内各分层土的压缩模量:
7.0Mpa、6.6Mpa、8.5Mpa、15.0Mpa、9.5Mpa、35.0Mpa、10.3Mpa
2.基底压缩厚度范围内各分层土的厚度:
2.17m、2.35m、4.57m、1.40m、4.94m、3.10m、1.27m
ζ=α[1+m(n-1)]
=1×[1+0.049×(25.6-1)]
三分层计算各层土的压缩量:
1.砂质粉土—粉细砂③层:该层顶面及底面各位于基础底面下Z=0及Z1=2.17m处。
A/B=34.0/16=2.1Z0/B=0查表C0=0.25
Z1/B=2.17/16=0.14查表C1=0.2498
ΔS1=P0/ES1ζ(C1Z1-C0Z0)
=0.33/7×2.21(0.2498×217-0.25×0)
=0.0213×54.2=1.16cm
2.粉质粘土④层:该层顶面及底面各位于基础底面下Z2=2.17m及Z3=4.52m处。
A/B=2.1Z4/B=4.52/16=0.3查表C4=0.2491
ΔS1=P0/ES1ζ(C3Z3-C2Z2)
=0.33/6.6×2.21(0.2491×452-0.2498×217)
=0.0226×58.39
3.粉质粘土⑤层:该层顶面及底面各位于基础底面下Z4=4.52m及Z5=9.09m处。
A/B=2.1Z4/B=9.09/16=0.57查表C4=0.2425
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.33/8.5×2.21(0.2425×909-0.2491×452)
=0.0176×107.84
4.砂质粉土—粉细砂⑥层:该层顶面及底面各位于基础底面下Z5=9.09m及Z6=10.49m处。
A/B=2.1Z4/B=10.49/16=0.66查表C4=0.2423
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.33/15×2.21(0.2423×1049-0.2425×909)
=0.01×33.74
5.粉细砂⑦层:该层顶面及底面各位于基础底面下Z7=10.49m及Z8=15.43m处。
A/B=2.1Z4/B=15.43/16=0.96查表C4=0.234
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.33/9.5×2.21(0.234×1543-0.2423×1049)
=0.0157×106.89
6.中砂⑧层:该层顶面及底面各位于基础底面下Z7=15.43m及Z8=18.52m处。
A/B=2.1Z4/B=18.52/16=1.16查表C4=0.2282
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.33/35×2.21(0.2282×1852-0.234×1543)
=0.0043×61.56
7.粘土⑨层:该层顶面及底面各位于基础底面下Z7=18.52m及Z8=28.0m处。
A/B=2.1Z4/B=25/16=1.75查表C4=0.2054
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.33/10.3×2.21(0.2054×2800-0.2282×1852)
=0.0145×152.49
首先计算在深度Z=28.0m处向上取计算层厚为1.0m的土层压缩量△Sn′:
A/B=2.1Z′/B=27/16=1.69查表C′=0.2077
ΔSn′=P0/ES1ζ(C4Z4-C3Z3)
=0.33/10.3×2.21(0.2054×2800-0.2077×2700)
=0.0145×14.33=0.208cm
ΔSn′/∑△Sί′=0.2469/(1.16+1.32+1.90+0.34+1.68+0.27+2.21)=0.208/8.88=0.023
∵ΔSn′/∑ΔSί′=0.023<0.025
∴基础底面下28.0m即为压缩层厚度
1.压缩层范围内各土层压缩模量加权平均值:
ESP=(15.47×2.17+14.59×2.35+18.79×4.57+33.15
×1.4+21.0×4.94+77.35×3.1+22.76×9.48)/28
∵ESP=27.1Mpa>20.0Mpa
∴ΨS=0.2(1.16+1.32+1.90+0.34+1.68+0.27+2.21)
EF座基础最终沉降量计算
1.基底压缩厚度范围内各分层土的压缩模量:
7.0Mpa、6.6Mpa、8.5Mpa、15Mpa、9.5Mpa、35Mpa、10.3Mpa
2.基底压缩厚度范围内各分层土的厚度:
2.17m、2.35m、4.57m、1.40m、4.94m、3.10m、1.27m
ζ=α[1+m(n-1)]
=1×[1+0.039×(27.6-1)]
三分层计算各层土的压缩量:
1.砂质粉土—粉细砂③层:该层顶面及底面各位于基础底面下Z=0及Z1=2.17m处。
A/B=34.0/16=2.1Z0/B=0查表C0=0.25
Z1/B=2.17/16=0.14查表C1=0.2498
ΔS1=P0/ES1ζ(C1Z1-C0Z0)
=0.26/7×2.04(0.2498×217-0.25×0)
=0.018×54.2=0.98cm
2.粉质粘土④层:该层顶面及底面各位于基础底面下Z2=2.17m及Z3=4.52m处。
A/B=2.1Z4/B=4.52/16=0.3查表C4=0.2491
ΔS1=P0/ES1ζ(C3Z3-C2Z2)
=0.26/6.6×2.04(0.2491×452-0.2498×217)
=0.019×58.39
3.粉质粘土⑤层:该层顶面及底面各位于基础底面下Z4=4.52m及Z5=9.09m处。
A/B=2.1Z4/B=9.09/16=0.57查表C4=0.2425
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.26/8.5×2.04(0.2425×909-0.2491×452)
=0.015×107.84
4.砂质粉土—粉细砂⑥层:该层顶面及底面各位于基础底面下Z5=9.09m及Z6=10.49m处。
A/B=2.1Z4/B=10.49/16=0.66查表C4=0.2423
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.26/15×2.04(0.2423×1049-0.2425×909)
=0.0084×33.74
5.粉细砂⑦层:该层顶面及底面各位于基础底面下Z7=10.49m及Z8=15.43m处。
A/B=2.1Z4/B=15.43/16=0.96查表C4=0.239
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.26/9.5×2.06(0.239×1543-0.2423×1049)
=0.013×114.6
6.中砂⑧层:该层顶面及底面各位于基础底面下Z7=15.43m及Z8=17.72m处。
A/B=2.1Z4/B=17.72/16=1.1查表C4=0.23
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.26/35×2.04(0.23×1772-0.234×1543)
=0.0036×46.5
7.粘土⑨层:该层顶面及底面各位于基础底面下Z7=17.72m及Z8=25.0m处。
A/B=2.1Z4/B=25/16=1.56查表C4=0.2129
ΔS1=P0/ES1ζ(C4Z4-C3Z3)
=0.26/10.3×2.04(0.2129×2500-0.2282×1772)
=0.012×127.88
首先计算在深度Z=25.0m处向上取计算层厚为1.0m的土层压缩量△Sn′:
A/B=2.1Z′/B=24/16=1.5查表C′=0.2152
ΔSn′=P0/ES1ζ(C4Z4-C3Z3)
=0.26/10.3×2.06(0.2129×2500-0.2152×2400)
=0.012×15.77=0.189cm
ΔSn′/∑△Sί′=0.189/(0.98+1.11+1.62+0.28+1.49+0.17+1.54)=0.189/7.19=0.025
∵ΔSn′/∑ΔSί′=0.025=0.025
∴基础底面下25.0m即为压缩层厚度
T/CBCA 007-2021标准下载1.压缩层范围内各土层压缩模量加权平均值:
ESP=(14.42×2.17+13.6×2.35+17.51×4.57+30.9
×1.4+19.57×4.94+71.4×2.29+21.22×7.28)/25
∵ESP=24.1Mpa>20.0Mpa
∴ΨS=0.2(0.98+1.11+1.62+0.28+1.49+0.17+1.54)
GB/T 26752-2020 聚丙烯腈基碳纤维CFG桩复合地基设计结果一览表