CB/Z 149-1980 Section element curve of single-end bulb flat steel with flange CB/Z149-1980 Standard download decompression password: www.bzxz.net

Guiding Technical Documents of the Sixth Machinery Industry Department of the People's Republic of China
Single-end bulb flat steel with wing plate
CB/Z149-80
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Guiding Technical Documents of the Sixth Machinery Industry Department of the People's Republic of China
Single-end bulb flat steel with wing plate section element curve CB/Z149-80
This figure harmonically collects the moment of inertia (1) curves, minimum section modulus (W) curves, web equivalent area, curves of No. 5 to No. 27 ball fan steels with different thicknesses and different widths of nitrogen plates. These curves can be used by designers when calculating the elements of ball fan steel with chlorine plates.
1, calculation formula
inertia short|=1. +
minimum cutting modulus W:
web equivalent area,
F. +F,
In the formula, [the moment of inertia of the single-end bulb flat steel; F. — the cross-sectional area of ​​the single-end spherical fan,
Yo——the distance from the center of gravity of the single-end spherical fan steel section to the inner edge of the wing plate: F,=bt——the cross-sectional area of ​​the wing plate;
b the width of the wing plate,
-the thickness of the wing plate,
h—the height of the single-end bulb flat steel:
—the thickness of the web of the single-end spherical fan steel,
:-F. +F.
Axis to the distance between the center axis of the combined section,
Released by the Sixth Ministry of Machine Building Industry
Proposed by the Submarine Professional Group
Wing plate center
February 12, 1980
Total 24 pages
2. Diagram form
Page 2
CB/Z149—80bzxZ.net
1 curve and W curve (Figure 215) use the width b of the wing plate as the horizontal coordinate. (0. Line (Figures 16-23) takes the area F of the plate as the horizontal coordinate. 3. Application example
Find the cutting element of the No. 5 bulb flat steel with a wing plate with a thickness of t=6mm and a width of b=40cm. From the I and W curves in Figure 2, we can find that 1=37.84cm, W=7.67cm, and from the @ curve of the No. 5 bulb fan steel in Figure 16, we can find that @,=1.72cm*. Note: The unit of the thickness of the wing plate in the atlas is Qushi. M)
CB/Z14980
Total 24 pages
Page 3|| tt||W（M）
Total 24 pages Page 4
Working curve
W cutting line
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W(cM3)
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Working line
W curve
Total 24 pages Page 5
Total 24 pages Page 6
I curve
W curve
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W(cms)
b (cM)
I (cm)
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W business line
Total 24 pages
Page 7
b (ot)
Total 24 pages Page 8
w curve
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W(c)：
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w curve
10 : 15
Total 24 pages
Page 9
w(ch3)
Total 24 pages
Page 10
I curve
W curve：
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