桩偏心弯矩计算
11-12
根据浙江省标准《建筑地基基础设计规范》(DB33/1001-2003)中公式
Ra=qpa A p +up Σq sia l i
2#车间 取Z10孔:
Ra=qpa A p +up Σq sia l i
=3.14*0.4*0.4*0.25*1000*0.9+3.14*0.4*
(0.9*6+0.7*5+2.7*12+4.9*14+4.2*10+3*12+2.3*4+1.02*23)
=0.1256*1000*0.9+1.256*220.56
=390KN 取值Ra=390KN
1#车间 取Z12孔:
Ra=qpa A p +up Σq sia l i
=3.14*0.4*0.4*0.25*1000*0.9+3.14*0.4*
(0.7*6+2.6*5+1.9*12+3.4*14+4.5*10+2.1*12+2.8*4+
1. 2*23)
=0.1256*1000*0.9+1.256*196.6
=359.9KN 取值Ra=350KN
考虑偏心竖向力作用;
Qik=FK/n +GK/n+Mxk*Yi/Σyi2
Qik
边柱:
Qik=408+0.8*2.4*1*26+0.24*2.8*4.5+0.3*0.6*8*26+8
0)/2+235/2/0.8
=290+146
=436KN > 0.85*350=297KN 不符合 中柱:
Qik=(680+0.8*2.4*1*26+0.3*0.65*8*26+80
/2+232/2/0.8
=280+145
=425KN