Complex tubular-beam bracing connection

[Syahzada]

Hi, I’m currently a structural engineering student working on my thesis, which focuses on the support frame design for the fabrication and installation phases of a topside oil rig jacket platform.

One of the connections in my design involves a brace linking the upper and lower beams of the frame. I have some concerns about the constructability of this connection in a real-world setting. While using a gusset plate might be a potential solution, the offset between the upper and lower beams raises further questions about its practicality.

Has anyone here had experience dealing with a similar connection in construction? I’d really appreciate any insights or suggestions.


(side view)


(top view)

(front view)


(connection in question)

 

[JAE]

You should repost this in the student section. It doesn't belong here.

 

[BulbTheBuilder]

In a real-world setting, the connection will be designed as a welded connection. The lower and upper beams will be shop-fabricated together and then lifted to the desired position. One item to look out for is the weight of the system. You don't want to frame heavy platform to pe lifted as one piece.

Check with your school library for these references:
Design of welded structure - Blodgett
AISC - Design Guide 24 Hollow Structural Section Connections (Second Ed.)
CIDECT Design Guide 7 or 8 [check if you can get access to all but I think 7 should be enough]

"Heavy" is subjective. As long as a crane can carry it, it's good.

 

[GregLocock]

They'll love you for that!

 

[Syahzada]

You should repost this in the student section. It doesn't belong here.

okay my bad

 

[Syahzada]

In a real-world setting, the connection will be designed as a welded connection. The lower and upper beams will be shop-fabricated together and then lifted to the desired position. One item to look out for is the weight of the system. You don't want to frame heavy platform to pe lifted as one piece.

Check with your school library for these references:
Design of welded structure - Blodgett
AISC - Design Guide 24 Hollow Structural Section Connections (Second Ed.)
CIDECT Design Guide 7 or 8 [check if you can get access to all but I think 7 should be enough]

"Heavy" is subjective. As long as a crane can carry it, it's good.

thank you for the input

 

[Syahzada]

View attachment 10036

They'll love you for that!

is this sarcastic haha

 

[GregLocock]

Oh yes. sarc 150%. So in what loading condition is that tiny stub doing anything useful?