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Design of Cranked Steel Beam 3

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VictorAK

Structural
Dec 10, 2008
33
Hello,
Does anyone know where I can find the design of a cranked steel beam along with some examples?
Thank you.
 
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CSD-
I sketched it out very quickly and what seems to result is:
Compression in the top flanges due to moment result in a vertically upward shear force
Tension in the bottom flanges due to moment result in a vertically downward shear force.
These two would combine to put the web of the beam at the join in tension, right?

The shear forces on the beam would want to put the same point in compression, correct?
 
Follow the forces in the flanges. The change in direction causes forces which have to be resisted. A plate across the joint as csd72 described will do this. The force in the splice plate changes across the joint from tension to compression as the web absorbs the force.
 
The problem with that plate is the welding. It is placed over the butt weld in the web and needs welds on both sides of the plate to the webs and in the oblique angles to the flanges.

That is why I would rather put a tee under the bottom flanges to reduce the flange forces.

Michael.
Timing has a lot to do with the outcome of a rain dance.
 
That's not the way I detail it. The plate is butt welded to the beam on both sides. It's an end plate for both members.
 
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