Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Selection of Ground Motions for Performance-Based Seismic Assessment of Structures
It is well known that one of the most significant sources of uncertainty and variability in seismic demand prediction arises from ground motion selection. The task of selecting appropriate ground motions can become a formidable given the limited database of earthquake records that satisfy the required site parameters. Moreover, from a practical consideration, it is necessary to limit the number of ground motions used in the evaluation process while at the same time minimizing the dispersion in the demand estimation. This presentation will examine the effectiveness of three ground-motion selection schemes: (i) magnitude scaling; (ii) spectrum matching; and (iii) conditional mean spectra. Findings from comprehensive nonlinear time history simulations indicate that while spectral matching is slightly more effective in reducing dispersion compared to scaling, it may modify ground motion content which can alter the location of peak demands. The conditional mean spectrum is less effective in reducing dispersion in demands when amplitude scaling is used.
Selection of Ground Motions for Performance-Based Seismic Assessment of Structures
It is well known that one of the most significant sources of uncertainty and variability in seismic demand prediction arises from ground motion selection. The task of selecting appropriate ground motions can become a formidable given the limited database of earthquake records that satisfy the required site parameters. Moreover, from a practical consideration, it is necessary to limit the number of ground motions used in the evaluation process while at the same time minimizing the dispersion in the demand estimation. This presentation will examine the effectiveness of three ground-motion selection schemes: (i) magnitude scaling; (ii) spectrum matching; and (iii) conditional mean spectra. Findings from comprehensive nonlinear time history simulations indicate that while spectral matching is slightly more effective in reducing dispersion compared to scaling, it may modify ground motion content which can alter the location of peak demands. The conditional mean spectrum is less effective in reducing dispersion in demands when amplitude scaling is used.
Selection of Ground Motions for Performance-Based Seismic Assessment of Structures
Kunnath, Sashi (Autor:in) / Ahmadi, Amin (Autor:in)
2013
7 Seiten
Aufsatz (Konferenz)
Englisch
Prädiktion , Erdbeben , Amplitude , Boden (Erde) , Bauwerk
Selection of Ground Motions for Performance-Based Seismic Assessment of Structures
| British Library Conference Proceedings | 2013
Identification of critical ground motions for seismic performance assessment of structures
| Online Contents | 2006
Response of Structures to Incoherent Seismic Ground Motions
| British Library Conference Proceedings | 1994
Amplitude-Scaled versus Spectrum-Matched Ground Motions for Seismic Performance Assessment
| British Library Online Contents | 2011