Naslov
Seismic microzoning of Belgrade

Autori
Lee, V.W. ; Trifunac, M.D. ; Bulajić, B. ; Manić, M. ; Herak, Davorka ; Herak, Marijan

Izvornik
Soil dynamics and earthquake engineering (0267-7261) 97 (2017); 395-412

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Microzonation maps ; which include description of site geology and site soil properties ; Contribution of a large distant earthquake to the design strong motion amplitudes ; Computation of seismic hazard for earthquake sources which follow different attenuation laws

Sažetak
Seismic microzonation maps for Belgrade (Serbia) and its surroundings are presented based on the uniform-hazard-spectrum (UHS) methodology. Such mapping must satisfy the guidelines for performance-based design (PBD), which at present requires specification of two spectral amplitudes, one for which the structure will remain essentially linear, and the other for which it will undergo nonlinear response. These requirements cannot be achieved by specifying the design spectra using only one (same) fixed spectral shape, and those spectra cannot be scaled by the peak ground acceleration alone. Another source of difficulties in the selection of the design amplitudes for PBD occurs when the standard spectrum shape is not capable of describing excitation by large distant earthquakes. Furthermore, scaling the design ground motion only via soil site classification (like A, B, C as in Eurocode 8) ignores the effects of site geology and thus also leads to erroneous results. The maps we present in this paper avoid these shortcomings and include in a balanced way the effects of near and distant large earthquakes, spatial distribution of seismic activity, the site geology and site soil properties.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika

POVEZANOST RADA