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References for Plate Rinforced Coupling Beam Design

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KootK

Structural
Oct 16, 2001
18,618
I'm looking to design a coupling beam just like the one shown below. I'd like assistance tracking down any relevant design guides that may be available and written to either North American or European Standards. What I already have is this:

1) Lots of north American stuff on wide flange reinforced systems, which is a bit different and;

2) Some excellent material coming out of China. Mostly research papers. The name Lam comes up a lot.

I'm happy to base my design upon these resources but, at the same time, if there's something available that's more "local" to north America, I certainly wouldn't want to fail to take it into account.

c01_omy49y.jpg


I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
 
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Not much formal research or documentation in North America that I know of. MKA is driving a lot of the research and publishing on composite link beams and they like wide flanges for whatever reason.

More information in this thread:
thread181-27567

There's some pretty good and well-developed examples in the thesis/dissertation from Hong Kong that I linked in that thread. If you don't have it and can't get free access let me know and I'll figure out how to get it to you.

Kind of a different application but there's also an article in the current ACI Structural Journal from a bunch of Aussies about using checker plate embedded in link beams. Mainly seems to focus on rebar replacement rather than supplementing shear strength though: Link
 
Not sure I've seen something for that particular shape (i.e. just a plate).....but one of the best references I've seen for composite design (i.e. structural steel in the middle of reinforced concrete) is: 'Composite Construction Design For Buildings', by; Viest, Colaco, et al., published by ASCE/McGraw-Hill, 1997.

There is also a design example of a coupled shear wall (i.e. that particular connecting element; see p.6.86-6.89 of that text).....except they do it with a stud covered wide-flange.
 
That particular arrangement is given 3 pages of discussion in ASCE's "Recommendations For Seismic Design Of Hybrid Coupled Wall Systems"

Attached the relevant pages for your reference, the rest of the document may also prove helpful for the basic concepts involved in the design of hybrid wall systems.
 
 https://files.engineering.com/getfile.aspx?folder=704926f8-16fa-478d-ae9b-a2762103b68d&file=From_ASCE_-_Recommendations_For_Seismic_Design_Of_Hybrid_Coupled_Wall_Systems.pdf
I think that, with that steel plate, you are giving a big indirect axial tension force in the lifting wall panel that will produce tension in the pier. The indirect effect on axial force is the sum of shear force on the RC beam. You have a very rigid RC beam..
 
A steel beam link is far superior to the ACI coupling beam solution in section 18.10.7 (very difficult to construct).
I would argue for a conventional wide flange section over the figure you showed.
The selection is similar to EBF (AISC basis) to couple two walls together. Flexural link or balanced link.

See work by Motter and Wallace (UCLA) via Pankow, which has already been indirectly referenced by the smart guys in this thread.
Koot: proof that you're a great engineer --> you can't spell.
 
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