Pushover Analysis of Multistory Frame

[kashif]

Dear STKO Team,

I am currently working on a pushover analysis of a multistory mass timber frame structure and have encountered a few issues that I hope you can help me resolve:

When assigning a rigid diaphragm at each story and applying lateral loads, only the first story exhibits displacement, which seems incorrect. I was expecting that the structure is connected but it seems the opposite.

When I apply the lateral load only at the top story, the analysis completes and shows some results, but I am unable to clearly understand the behavior of the intermediate stories.

My objective is to evaluate the overall pushover capacity of the structure, investigate connection behavior at each story level, and assess the inter-story drift distribution.

I have attached the model for your review. I would greatly appreciate it if you could take a look and advise on how to address these issues.

Thank you

[kashif]

Dear STKO Team,

Just following up on my previous request regarding the pushover analysis of a multistory timber frame. I’d appreciate any feedback on the model I shared.

Regards

[STKO Team]

Did you have a look at the deformed shape?

POV.png (166.7 KiB) Viewed 5560 times

You should double check the local DOFs in the zero length element where you applied the hinge!
Now you applied the pinching4 hinge to the axial DOF and to the rotational DOF about the local Z axis of the beam