Time-dependent model for earthquake occurrence and effects of design spectra on structural performance: a case study from the North Anatolian Fault Zone, Turkey

Abstract

We have investigated the time-dependent seismicity model of the earthquake occurrence on a regional basis through the North Anatolian Fault Zone (NAFZ). To that end, the studied region has been subdivided into 7 seismogenic zones considering the seismotectonic criteria, and then regional time and magnitude predictable (RTIMAP) model has been performed. Intervened times and magnitudes of main shocks produced in each zone have predictive properties defined by the RTIMAP. The probabilities of the next main shocks in 5 decades and the magnitudes of the next events have been estimated using the formation time and magnitude of the past events in the zones. In the second step of the study, we have considered 17 settlements located on the NAFZ to perform point-based site-specific seismic hazard analyses and to determine the design spectra and earthquake parameters using updated Turkish Earthquake Hazard Map. Eigen value and static adaptive pushover analyses have been applied for the sample reinforced concrete building using the design spectra obtained from each settlement. This sample building has been modelled with the same structural characteristics (i.e. material strength, column and beams, applied loads, etc.) for all of the settlements. We have determined that the earthquake building parameters differ from each other which indicates the significance of site-specific seismicity characteristics on the building performance.

Investigation of Site Characterization and Vulnerability in Antakya (Turkey) under Basin Effect

“…Turkish Earthquake Hazard Map Interactive Web Application (TEHMIWA) has become available for the computation of earthquake parameters used in structural analyses for any geographic location since the beginning of 2019 [68][69][70][71][72][73]. The comparison of the peak ground acceleration (PGA) and peak ground velocity (PGV) values in fifteen ReMi measurement locations considered within the scope of the study for all earthquake ground motion levels are shown in Table 1 through the TEHMIWA.…”

A Comparative Probabilistic Seismic Hazard Analysis for Eastern Turkey (Bitlis) Based on Updated Hazard Map and Its Effect on Regular RC Structures

“…The fact that December 27, 1939, Erzincan, December 20, 1942, Niksar-Erbaa, June 20, 1943, Adapazari-Hendek, November 26, 1943, Tosya-Ladik and February 1, 1944, Bolu-Gerede earthquakes occurred at close time intervals and led to huge economic losses and casualties triggered the efforts to reduce earthquake losses in Turkey [81,82]. Turkey's first official earthquake zonation map was prepared in 1945 following these earthquakes [83,84].…”

Sismik dirençlilik ve spektral parametrelerin etkisi

“…Bu çalışmalarda farklı yapı tipleri için deprem kuvveti hesap yöntemleri, taban kesme kuvvetleri, deplasmanlar, periyot, hedef deplasmanlar, katlar arası ötelenmeler, spektrum eğrileri ve kesit hasar değerleri incelenmiştir. [10][11][12][13][14][15][16][17] Karasin vd. [18] çalışmalarında coğrafi konuma özel tasarım spektrumlarının betonarme yapı performansına etkisini incelemişleridir.…”