Copyright @ 2001~2006 famousbuild.com. All rights reserved. 圆钢拉弯、压弯构件 [参数输入] 钢材: Q235钢Q345钢Q390钢Q420钢 d = mm (圆钢管外半径) t = mm (壁厚) N = kN (轴心力设计值,拉为正,压为负) M = kN*m (弯矩设计值)