Beam Clamp Flange Check 1

[AndyGreg]

I am designing a hanger for the waling frame to a large cofferdam, and for simplicity of fixing intend to use a proprietory beam clamp system to fix the waling to the hanger. The clips on the beam clamp are applied at the outer edge of the flange and as such must apply a bending moment to the flange.
Does anybody here have experience of checking the capacity of the flange of the supporting member to carry the load? I am happy that I have designed the beam to carry the applied loads but can't find any references referring to the capacity of a flange loaded in this way.

Regards

Andy

 

[austim]

AndyGreg,

You haven't told us what section you are using for you waler frame, so this may be only partially relevant.

Assuming that you are using an I section beam, and that your flange edge loads are applied directly out of the plane of the flanges, then you can reasonably treat the flanges as cantilevered plates subject to a point load at their free edge. Timoshenko gives a moment of P/2 (force.distance/distance).

You may also get something useful from your local crane design code, if it has any guidance on design of monorail beams.

 

[RiBeneke]

If you are familiar with the yield-line method, this can give a good estimate of the length along which bending would take place, and thus the work done to bend the flange and the strength of the connection.

You will also need to consider the effect of this load on the overall compression flange l/r of your waler member, if the connection is at a compression position of the flange.