设备吊耳计算书

14-Mar-15

Rev. :

0

Sheet :

2/3

Calculation for Lug 计算凸耳

Refernence: AISC

1. Lifting condition: 起吊条件

In lifting condition, following load are condidered: 在吊装情况下，下面的负载是被考虑的 Total weight of skid: 橇块的总重量 Max. tilt degree in lifting: 最大倾斜的升降度 Dynamic load factor (n) 动态负载系数(n) Perpendicular load of lugs: 凸耳的垂直载荷

2. Lifting lug calculation(refer to DWG-MA-002.000) 吊 Dry weight of skid, 干重的橇W Lifting lug radius, 吊耳半径

R

==

7.10 KN50.00 mm54.00 mm100.00 mm20.00 mm70.00 mm

Q235-B

7.10 KN5.00 degree 度2.00 0.05

Diameter of lug hole, 耳孔直径d = Diameter of pin, 销直径,

dp= Thickness of lug, 吊耳板厚 Height of lug, 凸耳高度 Material of lug 材质 Area available: 可用范围 Shear 吊耳横截面面积 Tension 净拉伸面积

Bearing 销表面积

As = 2*[(R-d/2)*t] = At = 2*[(R-d/2)*t] = Ab = 0.9dp*t =th

==

920.00 mm²920.00 mm²1800.00 mm²235.00 Mpa

Yidld Strength: 屈服强度应力Fy = Allowable on Lug: 允许对吊耳 Tension: 张或拉应力 Bending: 许用应力 Shear in Lug: 切变凸耳

ft = 0.45Fyfc = 0.66Fyfs = 0.4Fy

=====

105.75 Mpa155.10 Mpa94.00 Mpa211.50 Mpa94.00 Mpa

Bearing: 承载应力fb = 0.9Fy Allow stress of weld,允许应力

f = 0.4Fy焊缝

Safe load of lug: 吊耳的安全负 Shear 剪切应力 Tension 张或拉应力

Bearing 承载应力

Fs' = As*fsFt' = At*ft

==

86480.00 N97290.00 N380700.00 N

4

4099.31 N

Fb' = Ab*fb=

Impact factor per speces 影响因子/规范

The largest load on one最大的负荷F' = Wn/4/sin(60) = lug is:

here:

Considering 5 degreetilt in考虑5度倾斜F = F'*1.05

=4304.27 N

Project :Subject :Job / Bid no. :Date :

14-Mar-15

Rev. :

0

Sheet :

3/3

lifting, the design load is, 起重,设计负载为,

(F.O.S.)s(F.O.S.)t

==

Fs'/F =Ft'/F =Fb'/F =0.49f =

20.09 > 422.60 > 488.45 > 446.0610.00 mm13.22 mm240mm

okokok

(F.O.S.)b=

Fillet weld allowable stress 角焊缝许用应力fw = Select fillet weld size,选择角焊缝W =

Min. length of fillet weld, 最小角L = F/(fw*0.707*w) = Actual length of fillet weld, 实际La = (70*2+100)

Therefore the weld is satisfied. 因此,焊接满足要求。

2. DIAGRAM