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stroxy
Posts: 183
Registered: ‎12-06-2011
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Provided Reinforcement design for divided column

370 Views, 7 Replies
09-26-2012 05:23 AM

How does one design a column which has been divided into two (or more) columns in the analysis module (because of connecting beams mid-height in column, or column spanning multiple stories)  in the RC design module.  

 

I assume you can take a section and input the real length of the column in the buckling analysis but how does one factor in columns end moments, etc.??

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Rafal.Gaweda
Posts: 4,991
Registered: ‎04-26-2010

Re: Provided Reinforcement design for divided column

09-26-2012 08:33 AM in reply to: stroxy

You have to divide such column into parts.



Rafal Gaweda
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stroxy
Posts: 183
Registered: ‎12-06-2011

Re: Provided Reinforcement design for divided column

09-26-2012 09:27 PM in reply to: Rafal.Gaweda

So if I have say a 6m column divided into 2 parts for analysis.  In designing the column I will design both parts as separate columns and enter efffective length  factor * 6m as the buckling length for each part ?

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Rafal.Gaweda
Posts: 4,991
Registered: ‎04-26-2010

Re: Provided Reinforcement design for divided column

09-27-2012 08:08 AM in reply to: stroxy

So if I have say a 6m column divided into 2 parts for analysis.  In designing the column I will design both parts as separate columns and enter efffective length  factor * 6m as the buckling length for each part ?


Decision is yours but IMHO if you are talking about right hand side case (below) I would suggest to use 3m as column length. Left => 6m.

 

bucklingcol.jpg

 

 



Rafal Gaweda
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stroxy
Posts: 183
Registered: ‎12-06-2011

Re: Provided Reinforcement design for divided column

09-27-2012 08:17 AM in reply to: Rafal.Gaweda

Thanks Was talking about LHS case

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stroxy
Posts: 183
Registered: ‎12-06-2011

Re: Provided Reinforcement design for divided column

09-27-2012 08:19 AM in reply to: stroxy

How did you get buckling shapes to show?

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Rafal.Gaweda
Posts: 4,991
Registered: ‎04-26-2010

Re: Provided Reinforcement design for divided column

09-27-2012 08:36 AM in reply to: stroxy

FEM Buckling analysis

 

modedispl.jpg



Rafal Gaweda
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Mentor
stroxy
Posts: 183
Registered: ‎12-06-2011

Re: Provided Reinforcement design for divided column

09-27-2012 10:18 AM in reply to: Rafal.Gaweda

Thanks once again!!:smileyvery-happy:

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