%钢管混凝土柱承载力计算

Pi＝3.14159265Pi=3.14159265fc＝15(N/mm2)fcfy＝245(N/mm2)fyl0＝3.200(m)l0dc＝500(mm)dct＝10(mm)tφ＝0.822φ=IF(l0/dc4,1-0.115*sqrt(l0/dc-4),1)Aa＝15707.96(mm2)Aa=Pi*dc*tAc＝196349.54(mm2)Ac=Pi*dc^2/4θ＝1.31θ=(Aa*fy)/(Ac*fc)Nu＝7.954E+06(N/mm2)Nu=φ*fc*Ac*(1+2*sqrt(θ))钢管混凝土柱承载力计算