计算工字形截面牛腿与钢柱连接的对接焊缝强度。F=550KN（设计值），偏心距e=300mm。钢材Q235B，焊条为E43型，手工焊。焊缝为三级检验标准，上、下翼缘加引弧板和灭弧板施焊。注: ({f)_(t)}^2=185N/m(m)^2 。({f)_(c)}^w=215N/m(m)^2,-|||-({f)_(v)}^w=125N/m(m)^2 注: ({f)_(t)}^2=185N/m(m)^2 。({f)_(c)}^w=215N/m(m)^2,-|||-({f)_(v)}^w=125N/m(m)^2