design of wale to raker connection 1

[arsey]

Hello all,

I am trying to design a raker to wale connection for a sheet pile earth retention system that can resist torsional and weak axis bending.

I have a 210k horizontal load to resist from the wall which relates to about a 90 k vertical component at the wale.
The wale is applied to sheet piles, therefore the wale is left unsupported for approximately 3 feet between pans.

My questions are:

1. Can I resist torsion and weak axis bending with stiffeners applied to the top/bottom of the flange where the raker meets the wale?

2. If I cannot use stiffeners, any ideas on how to accomplish? Please consider upsizing the member as a last option.

Thanks for all who respond. I have also added a quick sketch

 

[paddingtongreen]

I presume, from the question, that the raker hits the wale between pans. Stiffeners help locally but will not help in torsion or weak axis bending. If the outside flange can carry the force from the raker to the pans , then stiffeners will help to get the moment back to the pans.

If you could make a connection to the center line of the wale, your situation would be improved substantially, both flanges would be engaged in weak axis bending, strong axis bending and the only torsion would be at the pans.

I suspect that the pans are the danger point, you will be applying an out-of-plane moment to a plate. At the least, it is likely to buckle under a load that troubles HP sections.

Michael.
Timing has a lot to do with the outcome of a rain dance.

 

[PEinc]

Inclined raker braces need roll chocks to prevent the wales from rolling over at the brace locations. The roll chock is a welded, steel compression member that basically extends the brace over to the wall and laterally supports the wale. Usually, the roll chock is cut from a leftover piece of the raker brace. See attached PDF for examples.

www.PeirceEngineering.com

 

[arsey]

Thanks for all of your help. My prayers have been answered.

PE: Thank you: I will track down these publications ASAP

 

[PEinc]

Here's the first reference.

http://www.fhwa.dot.gov/engineering/geotech/library_arc.cfm?pub_number=55

http://www.PeirceEngineering.com