弹簧刚度计算
特征EC b h D d B H t1t2Hc
宽(mm)长(mm)(mm)(mm)(mm)(mm)(mm)(mm)柱高(mm)混凝土柱3060080013000圆管柱2013513356800 H型钢柱201250500686800
Ic1Ic2
t1*(H-2t2)*(H-2t2)*(H-2t2)/12B*t2*t2*t2/12+(H-t2)/2*(H-t2)/2*B*t2
56689952121042666.7
Ic K
bh3/123EcIc/Hc3
25600000000 1.048702777Π*(D*D*D*D-d*d*d*d)/64
126779255.30.243130123
298775285.30.572974433