提问人:贾志鹏 2024-11-11 13:36:24 浏览:4202
1.6~8为梯段板斜板的自重,计算方法:
a.荷载标准值:
可变荷载:q = 3.50kn/m2 面层荷载:qm = 1.70kn/m2
栏杆荷载:qf = 0.20kn/m
b. 楼梯几何参数:
踏步高度:h = 0.1438 m
梯板厚: t = 100 mm
踏步宽度:b = 0.3000 m
计算跨度:l0 = l1+l3+(b1+b2)/2 = 2.10+1.00+(0.20+0.20)/2 = 3.30 m
梯段板与水平方向夹角余弦值:cosα = 0.902
c. 荷载计算( 取 b = 1m 宽板带):
(1) 梯段板:
面层:gkm = (b+b*h/b)*qm = (1+1*0.14/0.30)*1.70 = 2.51 kn/m
自重:gkt = rc*b*(t/cosα+h/2) = 25*1*(0.10/0.902+0.14/2) = 4.57 kn/m
抹灰:gks = rs*b*c/cosα = 20*1*0.02/0.902 = 0.44 kn/m
恒荷标准值:pk = gkm+gkt+gks+qf = 2.51+4.57+0.44+0.20 = 7.73 kn/m
2.将换算后的梯板面荷载(6~8)+楼梯活荷载 按照单、双向板的分配原则换算到梁上,得到梁上线荷载.