拌合站料仓大棚桁架验算

雨篷桁架结构验算

1)施工活荷载：

建筑屋面活荷载为水平投影面上荷载值，其均布活荷载的取值与屋面的使用性质、使用功能有关，按照《荷载规范》4.3.1查用

按不上人屋顶考虑，施工活荷载标准值取0.5KN/m2,折合到梁上均布荷载为0.5*6=3KN/m；

按照《钢结构设计规范》可知作用在结构上的雪荷载为0.3 KN/m2；不考虑二者同时出现，取较大者只考虑施工活荷载。

2)风荷载

按照荷载规范要求，该结构矢跨比3.6/20=0.18，风压高度系数1.0，风振系数1.2，结构体形系数0.8。基本风压0.35 KN/m2计算风荷载标准值0.336 KN/ m2，折合到梁上均布荷载为0.336*6=2KN/m；

3)恒荷载（自重）

屋面自重荷载按0.17KN/m2考虑, 折合到梁上均布荷载为0.17*6=1KN/m；

4)荷载组合

在本次屋盖结构设计中，采用第⑷种荷载效应组合：

恒荷载+ 风荷载+活荷载 /雪荷载

竖向荷载作用q竖=1.2* q恒荷载+1.4*q活=1.2*1+1.4*（3+2）=10.2KN/m

5)结构验算

横杆60*4.5钢管材料性质如下：

EA=2.06*105N/mm2*7.037*102mm2*10-3=144962.2KN

EI=2.06*105N/mm2*27.73*104mm4*10-3*10-6=57.12KN·m2

腹杆30*2.5钢管材料性质如下：

EA=2.06*105N/mm2*2.16*102mm2*10-3=44962.2KN

EI=2.06*105N/mm2*2.06*104mm4*10-3*10-6=4.24KN·m2

建立荷载模型如下：

1.桁架强度验算

内力计算

单位：力(kN),力矩(kN*m)

杆端 1 杆端 2

单元码轴力剪力弯矩轴力剪力弯矩

--------------------------------------------------------------------------------------------

1 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000

2 19.7233622 0.00000000 -0.00000000 19.7233622 0.00000000 0.00000000

3 36.2057280 0.00000000 -0.00000000 36.2057280 0.00000000 0.00000000

4 47.0377752 -0.00000000 -0.00000000 47.0377752 -0.00000000 0.00000000

5 66.9163683 0.00000000 -0.00000000 66.9163683 0.00000000 -0.00000000

6 74.5119462 0.00000000 -0.00000000 74.5119462 0.00000000 -0.00000000

7 79.1278141 0.00000000 -0.00000000 79.1278141 0.00000000 0.00000000

8 92.9277296 -0.00000000 0.00000000 92.9277296 -0.00000000 -0.00000000

9 92.9175920 -0.00000000 0.00000000 92.9175920 -0.00000000 -0.00000000

10 80.9915203 0.00000000 -0.00000000 80.9915203 0.00000000 0.00000000

11 77.1293781 0.00000000 -0.00000000 77.1293781 0.00000000 0.00000000

12 68.0745753 0.00000000 -0.00000000 68.0745753 0.00000000 0.00000000

13 50.8733898 -0.00000000 0.00000000 50.8733898 -0.00000000 -0.00000000

14 34.4760000 0.00000000 -0.00000000 34.4760000 0.00000000 0.00000000

15 22.1358218 -0.00000000 0.00000000 22.1358218 -0.00000000 -0.00000000

16 -0.00000000 0.00000000 -0.00000000 -0.00000000 0.00000000 0.00000000

17 -10.2000000 -0.00000000 0.00000000 -10.2000000 -0.00000000 -0.00000000

18 -17.5265209 -0.60527741 -0.00000000 -16.8284638 0.60527741 0.00000000

19 -34.0214892 -0.55461937 0.00000000 -33.4353061 0.55461937 0.00000000

20 -46.8949246 -0.75331192 0.00000000 -46.3227890 0.75331192 0.00000000

21 -63.9723194 -0.68220074 -0.00000000 -63.6262755 0.68220074 0.00000000

22 -77.4699075 -0.72513941 0.00000000 -77.1798517 0.72513941 -0.00000000

23 -81.8373221 -0.77819801 -0.00000000 -81.6250863 0.77819801 0.00000000

24 -88.0604798 -0.73906074 -0.00000000 -88.0095101 0.73906074 0.00000000

25 -87.6606935 -0.77988367 -0.00000000 -87.7116663 0.77988367 0.00000000

26 -79.1834103 -0.77819801 0.00000000 -79.3956461 0.77819801 -0.00000000

27 -75.3092925 -0.70955411 -0.00000000 -75.5991104 0.70955411 0.00000000

28 -62.3458834 -0.71885479 0.00000000 -62.6929167 0.71885479 -0.00000000

29 -45.2240627 -0.64543391 -0.00000000 -45.7853096 0.64543391 0.00000000

30 -33.3922856 -0.62579815 0.00000000 -33.9904750 0.62579815 -0.00000000

31 -16.5886563 -0.57765001 -0.00000000 -17.2800859 0.57765001 -0.00000000

32 -10.2000000 -0.00000000 0.00000000 -10.2000000 -0.00000000 -0.00000000

33 0.00000000 0.00000000 -0.00000000 0.00000000 0.00000000 0.00000000

34 14.5545119 0.00000000 -0.00000000 14.5545119 0.00000000 0.00000000

35 -10.1833356 0.00000000 -0.00000000 -10.1833356 0.00000000 0.00000000

36 13.0276477 -0.00000000 0.00000000 13.0276477 -0.00000000 -0.00000000

37 -8.13898535 0.00000000 -0.00000000 -8.13898535 0.00000000 0.00000000

38 8.69097839 -0.00000000 0.00000000 8.69097839 -0.00000000 0.00000000

39 -5.65875145 0.00000000 -0.00000000 -5.65875145 0.00000000 0.00000000

40 18.2279197 -0.00000000 -0.00000000 18.2279197 -0.00000000 0.00000000

41 -7.55985409 0.00000000 -0.00000000 -7.55985409 0.00000000 0.00000000

42 9.84545184 0.00000000 -0.00000000 9.84545184 0.00000000 0.00000000

43 0.36514917 -0.00000000 0.00000000 0.36514917 -0.00000000 -0.00000000