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檩条
工程名称:
考虑风吸力作用下檩条的稳定计算
[材料条件]
檩条钢材:
Q235
Q345
选用檩条:
C60X2.5
C60X3.0
C80X2.0
C100X2.5
C100X2.5
C100X3.0
C120X2.5
C120X3.0
C140X2.0
C140X2.2
C140X2.5
C160X2.0
C160X2.2
C160X2.5
C180X2.0
C180X2.2
C180X2.5
C200X2.0
C200X2.2
C200X2.5
C220X2.0
C220X2.2
C220X2.5
C250X2.0
C250X2.2
C250X2.5
Z140X2.0
Z140X2.2
Z140X2.5
Z160X2.0
Z160X2.2
Z160X2.5
Z180X2.0
Z180X2.2
Z180X2.5
Z200X2.0
Z200X2.2
Z200X2.5
Z220X2.0
Z220X2.2
Z220X2.5
Z250X2.0
Z250X2.2
Z250X2.5
[几何尺寸]
L
=
m
檩条跨度
s
=
m
坡向檩条间距
a
=
度
屋面坡度
[受力条件]
Gk
=
kN/m
2
屋面恒荷载标准值
Qk
=
kN/m
2
屋面可变荷载标准值
檩条受力:
按简支计算
按连续计算
拉条根数:
一根
两根
[考虑风吸力作用]
W
0
=
kN/m
2
风荷载标准值
檩条位置:
边缘带
中间区
面板跨数:
单跨屋面板
多跨屋面板
[构造措施]
I
1
=
mm
4
/m
每米宽度屋面板的有效截面惯性矩
n
=
个
每米长度上檩条与面板连接的紧固件数目[面板每个肋不得多于1个])
C
100
=
当b为100mm时面板与檩条连接的抗扭系数，
每个波均连接时取2600，隔一个波连接时取1700
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