Seismosoft | Earthquake Engineering Solutions

Hello

I am modelling a 4 storey jacket with high strength concrete jacket. However, although the structure is designed well in ETABS, the pushover curves still gives me weird pushover curves, as some of its branches shows a slight descend and then ascend.

I am suspecting some kind of bug in the model.

roshen.rj wrote: 07 Oct 2020, 12:16 Hello

I am modelling a 4 storey jacket with high strength concrete jacket. However, although the structure is designed well in ETABS, the pushover curves still gives me weird pushover curves, as some of its branches shows a slight descend and then ascend.

I am suspecting some kind of bug in the model.

https://ibb.co/KL8K6jJ

Please refer to this link for curve

Such small kinks in the curve are not somethin unseen in pushover analysis, and occur due to redisitrbution of forces upon the failure of one or more members. Yuo might want to employ a bit more stringent convergence criteria, e..g decrease the displacement and rotation tolerances 10 times (e.g. from 1e-4 to 1e-5).
Seismosoft Support

I tried this but it didn't work

What exactly you want to achieve? The capacity curve does not look strange.
Seismosoft Support