400桩CFG复合地基承载力计算

400

侧摩阻9472961109811098间距S=端阻4.38Xd=周长1752

土层号土层厚度51.9.771.381.195.7100.2110.8桩长=15.72.置换率等边三角形布桩m=0.0473正方形布桩m=0.0408矩形布桩1.13s1=1750m=0.0409置换率

0.0408

m=

底面积单桩承载力特征值24001.25660.12572088.281.05

1.13

s2=1750

3.桩身强度校核

试块抗压强度平均值 fcu＝Ra=2088.283Ra/Ap=498fcu/(3Ra/Ap)=0.50143实际单桩承载力取值1047.197.复合地基承载力特征值fak=fsk=β=Ra=Ap=fspk=

25

1601600.75

1047.19760.1257

mRa/Ap+β(1-m)fsk=

(0.75~0.9

5)

455.29

5.复合土层压缩模量Es=14.0367压缩模量比值ζ=复合土层压缩模量

Esp=6.主体部分沉降计算土层号5--156--1fspk/fak=ζ Es=

2.8455339.9418

土层厚度原土Esi处理后Esi07.0520.061.910.6230.2208.5024.19p。Zi01.91.9Zi-1001.9ai0.25000.24990.2499ai-10.25000.25000.2499ψssi0.0004.0220.000s6710114.71.31.15.70.20.817.6011.5121.209.8625.2014.7950.0832.7560.3328.0671.7142.093206.67.9914.714.915.71.96.67.9914.714.90.24910.24860.24820.24350.24350.24260.24990.24910.24860.24820.24350.24350.25.9772.5001.14512.2780.1741.09927.196