Abstract
This paper concentrates on evaluation of current Pushover Procedures to assess the seismic demands
of Eccentrically Braced Frame (EBF). Three 5, 10 and 15 storey EBF frames, designed by Iranian
codes, analyzed for five ground motions by MPA, IMPA, and as a proposed method MPA based on
Energy-Based capacity curve (briefly E-B.MPA), also story drift of frames were estimated by
conventional pushover using two Load distributions of FEMA-356, ELF and uniform patterns. It was
considered, the 10 and 15 storey frames have reversal capacity curves, therefore the pushover curve of
another story (not roof) was plotted to perform MPA but E-B.MPA was done with no difficulty.
Comparing the responses of procedures with the results of Nonlinear Time History Analysis (NTHA)
demonstrates that MPA.E-B determines drift demands of models with reversal capacity curves more
accurate than other procedures. Moreover there are serious concerns about estimated drift demands of
two load patterns.
of Eccentrically Braced Frame (EBF). Three 5, 10 and 15 storey EBF frames, designed by Iranian
codes, analyzed for five ground motions by MPA, IMPA, and as a proposed method MPA based on
Energy-Based capacity curve (briefly E-B.MPA), also story drift of frames were estimated by
conventional pushover using two Load distributions of FEMA-356, ELF and uniform patterns. It was
considered, the 10 and 15 storey frames have reversal capacity curves, therefore the pushover curve of
another story (not roof) was plotted to perform MPA but E-B.MPA was done with no difficulty.
Comparing the responses of procedures with the results of Nonlinear Time History Analysis (NTHA)
demonstrates that MPA.E-B determines drift demands of models with reversal capacity curves more
accurate than other procedures. Moreover there are serious concerns about estimated drift demands of
two load patterns.
| Original language | English |
|---|---|
| Number of pages | 8 |
| Publication status | Published - 30 Aug 2010 |
| Event | 14th European Conference on Earthquake Engineering - Ohrid, Macedonia, The Former Yugoslav Republic of Duration: 30 Aug 2010 → 3 Sept 2010 |
Conference
| Conference | 14th European Conference on Earthquake Engineering |
|---|---|
| Country/Territory | Macedonia, The Former Yugoslav Republic of |
| City | Ohrid |
| Period | 30/08/10 → 3/09/10 |
Keywords
- pushover procedures
- Eccentrically Braced Frame (EBF)
- ground motions
- reversal capacity curve
- E-B.MPA
- earthquake loads