料重:
K4=0.6×2200×10=13.2KN
每根工字钢所承担总重设计值为:
K =(K1+ K2+ K3+ K4)×1.5(安全系数)
=(6.7+3.18+2.7+13.2)×1.5
=38.67KN
2)计算简图确定:
38. 7KN
3)内力计算:
M 图:
69. 7KN/m
Mmax=PL=38.7×1.8=69.7KN/m
Q 图:
Qmax=38.7KN