Doubler plate for Tubular connection
Doubler plate for Tubular connection
(OP)
The doubler plates are used quite often for secondary attachments weld to main structure and the temporary connection. But i have the following questions about it:
1.why use doubler plate? Is it used to make the cutting of the attachemnts more easy? If so, can we cut the temporary 3mm awary from the parent material to avoid damage the chord(not use doubler plate)?
2.If a doubler plate is used, it can resist more axil compression, but can it resist tension or bending?
3.If doubler plate can resist tension of bending, how to calculate weld size and check the thickness of the doubler plate?
The above puzzle me a lot, hope someone can help.
1.why use doubler plate? Is it used to make the cutting of the attachemnts more easy? If so, can we cut the temporary 3mm awary from the parent material to avoid damage the chord(not use doubler plate)?
2.If a doubler plate is used, it can resist more axil compression, but can it resist tension or bending?
3.If doubler plate can resist tension of bending, how to calculate weld size and check the thickness of the doubler plate?
The above puzzle me a lot, hope someone can help.





RE: Doubler plate for Tubular connection
2. It can resist compression, shear and tension.
3. Same as any welded connection.
This ASCE paper might do you some good,
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BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: Doubler plate for Tubular connection
Do you mean that a doubler plate is not necessary if the punching shear is enough even the brace is a temporary brace?
RE: Doubler plate for Tubular connection
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: Doubler plate for Tubular connection
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: Doubler plate for Tubular connection
Most articles say that the doubler plate will increase the ultimate strengh of joint whether the brace is compression or tention brace(they do fem analysis and experiment).
I think the doubler itself and the weldment between the doubler and the chord should be checked, but i don't know how to check, and if there are some formulars to check?
I have not found articles on this problem, hope someone can help.
RE: Doubler plate for Tubular connection
BigInch
-born in the trenches.
http://virtualpipeline.spaces.msn.com
RE: Doubler plate for Tubular connection