Naslov
Validation of the SCEC Broadband Platform Simulations for Bridge Seismic Demand Assessment

Autori
Oreb, Jakov ; Šavor Novak, Marta ; Bijelić, Nenad

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceeding of the 2nd International Conference on Natural Hazards & Infrastructure ICONHIC / - , 2019

Skup
2nd International Conference on Natural Hazards & Infrastructure ( ICONHIC 2019)

Mjesto i datum
Khania, Grčka, 23.06.2019. - 26.06.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
bridges ; physics-based ground motion simulations ; performance-based earthquake engineering framework ; similar intensity measure validation

Sažetak
For many seismically endangered locations, there is a limited database of recorded high-intensity earthquake ground motions. On the other hand, extreme earthquake events can be characterized by numerical earthquake simulations. With the goal of developing trust in the utilization of simulated earthquake motions for engineering applications, this paper focuses on ‘similar intensity measure’ validation of simulated motions for demand assessment of a reinforced concrete bridge. Separate sets of comparable recorded and simulated ground motions are selected following the generalized conditional intensity measure approach whereby conditional spectrum and significant durations are used as hazard targets. Seismic demands from comparable sets of recorded and simulated motions are estimated at several intensities while the collapse capacities are obtained by using an incremental dynamic analysis (IDA). A statistical comparison of the resultsinvestigates whether there are significant differences between the responses. Considered engineering demand parameters include maximum lateral displacement, column drift ratio, and the bending moment and shear force at the bottom of the column. No statistically significant differences between the responses to recorded and simulated motions were observed in the elastic domain, while at higher intensities there are larger discrepancies between the results, but still without statistically significant differences. The results suggest that simulated seismograms and the SCEC BBP can be used as a useful tool for structural design. Opportunities for future work are discussed.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

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