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Active Member
Tihomir.Karaba
Posts: 10
Registered: ‎01-10-2014

Base connection to HEA beam instead of concrete

367 Views, 10 Replies
01-10-2014 12:46 AM

Hello,

 

I'm designing a steel frame that need to be mounted (bolt connection) to existing steel platform, so I'm interested is it possible to make base connection type to the HEA (or similar steel section) instead of to concrete?

 

Thanks in advance

 

Kind regards

Tihomir Karaba

 

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Artur.Kosakowski
Posts: 5,115
Registered: ‎12-17-2010

Re: Base connection to HEA beam instead of concrete

01-10-2014 12:59 AM in reply to: Tihomir.Karaba

What about using the beam to column connection with the end plate? In your case the beam will be the column and the column will be the beam :-).



Artur Kosakowski
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Active Member
Tihomir.Karaba
Posts: 10
Registered: ‎01-10-2014

Re: Base connection to HEA beam instead of concrete

01-10-2014 01:23 AM in reply to: Tihomir.Karaba

Thanks for quick answer

 

Yes, that would be great, but

in my case the column of the steel frame that need to be mounted to the platform is hollow section (pipe), so beam-column connection is not possible.

Also I have some dimensions of the base plate (end plate) that I have to keep (number and arrangement of the bolts). Any other idea?

 

Kind regards

 

Tihomir Karaba

 

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Product Support
Artur.Kosakowski
Posts: 5,115
Registered: ‎12-17-2010

Re: Base connection to HEA beam instead of concrete

01-10-2014 02:30 AM in reply to: Tihomir.Karaba

Could you make a sketch of this connection?



Artur Kosakowski
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Active Member
Tihomir.Karaba
Posts: 10
Registered: ‎01-10-2014

Re: Base connection to HEA beam instead of concrete

01-10-2014 02:54 AM in reply to: Artur.Kosakowski

Yes, of course

 

See attachment.

 

Thanks

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Product Support
Artur.Kosakowski
Posts: 5,115
Registered: ‎12-17-2010

Re: Base connection to HEA beam instead of concrete

01-10-2014 04:14 AM in reply to: Tihomir.Karaba

This is the closest match I can think of.

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.



Artur Kosakowski
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Active Member
Tihomir.Karaba
Posts: 10
Registered: ‎01-10-2014

Re: Base connection to HEA beam instead of concrete

01-10-2014 05:36 AM in reply to: Artur.Kosakowski

OK

I will try that way. Thanks

 

Earlier I've tried with following approach:

 

1. I designed base connection to concrete foundation, with dimensions of the support plate, number and arrangement of the bolts and dimensions and arrangement of the ribs witch are mandatory for me. From that connection verification I have excluded anchoring part (anchor also passed).

2. Because I need to check bolting connection I have designed another model in which the column (pipe) was replaced by equivalent custom H section column (similar section properties) and concrete foundation by HEA section (support). Than I have made beam-column connection with end plate dimensions as described above. From this connection verification I took the bolting part.

 

Can it be done in this way?

 

Thanks

 

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Product Support
Artur.Kosakowski
Posts: 5,115
Registered: ‎12-17-2010

Re: Base connection to HEA beam instead of concrete

01-10-2014 07:09 AM in reply to: Tihomir.Karaba

I'm not able to tell how accurate either of this approximated solutions are going to be. 



Artur Kosakowski
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Active Member
Tihomir.Karaba
Posts: 10
Registered: ‎01-10-2014

Re: Base connection to HEA beam instead of concrete

01-13-2014 02:12 AM in reply to: Artur.Kosakowski

Hello,

 

I've tied as you suggested (with elastic support) but I can't get generated fixed column base connection associated to structure, just pinned one as you can see on attached picture. Then after connection verification the ratio is 0.00, because forces are null.

Could you please tell me where I'm making a mistake?

 

Thanks

 

Kind regards

Tihomir Karaba

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Product Support
Artur.Kosakowski
Posts: 5,115
Registered: ‎12-17-2010

Re: Base connection to HEA beam instead of concrete

01-13-2014 08:04 AM in reply to: Tihomir.Karaba

Try to create the elastic support with very small values for UZ, RX, RY and RZ so that they do influence the results of static analysis of the structure (on the picture I attached the values for rotational stiffness are smaller than 0.01 therefore they are shown as 0.00 for the display set as 0.12). Unfortunately as the forces are taken from the values of reactions you will need to check the values of forces in the column and enter them manually using the manual calculations option.

 

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.



Artur Kosakowski
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