CFG复合地基承载力计算表格

1.单桩承载力的计算

2.置换率

等边三角形布桩 1.05m=0.0473正方形布桩 1.13

m=0.0408

矩形布桩

1.13s1=1750s2=1750

m=0.0921置换率m=0.0408

3.桩身强度校核

25

Ra=3358.613Ra/Ap=356360.70153782356.19454.复合地基承载力特征值 fak=160fsk=160β=0.75(0.75~0.95)

Ra=2356.1945Ap=0.2827

fspk=455.29

5.复合土层压缩模量Es=14.0367 2.8455339.9418

6.主体部分沉降计算 mRa/Ap+β(1-m)fsk=压缩模量比值ζ=fspk/fak=

复合土层压缩模量Esp=ζ Es=

试块抗压强度平均值 fcu ＝fcu/(3Ra/Ap)=实际单桩承载力取值＝