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Truss frame inquiry

2 REPLIES 2
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Message 1 of 3
dan.suciu
348 Views, 2 Replies

Truss frame inquiry

hi,

I am building a frame with 5 bays and 6 oppenings which has a truss roof system.

I have introduced the trusses using the library option, and edited them to my conformation.

I think i am doing something wrong, because when i load the truss element I get relatively large bending moments in the bars, also in nodes, ... and what i thing is a big axial force .

My question is if i need to set some releases for the bars, or if the current approach is the correct one.

The project is for my bachelors degree.

I have attached the project file bellow,loaded on 2 frames(just for test pupose)

 

Thank you in advance,

Dan,Suciu

2 REPLIES 2
Message 2 of 3
tony.ridley
in reply to: dan.suciu

At the moment you have a kind of portal action happening (ie trusses are transferring moment into the columns).  

 

Attached is file with truss ends pinned.

I only pinned trusses in the X direction.  You need to go through and do the ones in the Y direction too.  

 

Tony

Message 3 of 3
dan.suciu
in reply to: tony.ridley

I think this was the solution,

thank you tony

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