Iterative Based Stiffness Modification

[Trenno]

Curious if anybody has ever delved into automated stiffness modification with ETABS, particularly for highrise tower models.

Proposed automated workflow:

1) Set wall and header beams to uncracked.
2) Run model and extract results.
3) Determine what elements are cracked and calculate associated Ieff.
4) Re-run model with updated stiffness modifiers.
5) Repeat process until convergence.

This should be achievable with some in-house written code and ETABS OAPI. Obviously this would all need to happen with some degree of rationalisation to keep things practical.

 

[mushtpk]

Stage construction modelling is the way to carry the analyses. If the routine be developed for the one as u r curious, it would increase the processing time tremendously and could only be implemented for certain highly special nature of works.