STEEL CONNECTION HELP!

Question

STEEL CONNECTION HELP!

NAFTALI-HAKOHEN (Civil/Environmental)

(OP)

13 Apr 21 10:38

hi wondering how much of width of triangular plate takes the compression load from beam above, in corbel style connection
im designing:

how wide is the design strip to take the compression?

and how do i calculate lateral compression length for a triangle like this- kind of laterally supported along its length?

thanks

naftali

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skeletron (Structural) · Answer 1 · 2021-04-13 15:45:11

Probably treat it similar to the bearing on a web format (10t+N) calculations.

MIStructE_IRE (Structural) · Answer 2 · 2021-04-13 17:14:28

A BS5950 book I have says 100mm is reasonable - and picks it out of thin air!

dik (Structural) · Answer 3 · 2021-04-13 18:14:33

Why so many horizontal bolts? 28? seems a little overkill...

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

JoshPlumSE (Structural) · Answer 4 · 2021-04-13 18:42:58

The closet similar thing I can think of is the stiffener plate in Bolted Extended End Plate Moment connections (see AISC Design Guide #4).

In that design guide examples, AISC does two checks on the stiffener:
1) Min thickness required for stiffener = thickness of beam web * (Fy_beam / Fy_stiffener)
2) b/t > 0.56*sqrt (E/Fy).... which is, I believe, based on the b/t slenderness limit for the flange of a wide flange under uniform compression.

If you follow those requirements, I believe the stiffener will not be subject to local buckling.

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STEEL CONNECTION HELP!