Peak Ground Acceleration on Bedrock and Uniform Seismic Hazard Spectra for Different Regions of Golpayegan, Iran
Amirhossein Soltani Afarani1, Gholamreza Ghodrati Amiri2, Seyed Ali Razavian Amrei3

1Amirhossein Soltani Afarani, Department of Civil Engineering, Shahrekord Branch, Islamic Azad University, Shahrekord Iran.
2Prof. Gholamreza Ghodrati Amiri, Department of Civil Engineering, Center of Excellence Fundamental Studies Structural Engineering, Iran, University of Science & Technology, Tehran Iran.
3Dr. Seyed Ali Razavian Amrei, Department of Civil Engineering, Payame Noor University, Tehran Iran.
Manuscript received on 17 October 2014 | Revised Manuscript received on 24 October 2014 | Manuscript Published on 30 October 2014 | PP: 68-73 | Volume-4 Issue-5, October 2014 | Retrieval Number: E1817104514/14©BEIESP
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Abstract: The present paper was done under the title of peak ground acceleration(PGA) on bedrock and uniform seismic hazard spectra(UHS) for different regions of Golpayegan city. A set of seismic sources, historical and instrumental seismicity data within the radius of 200 kilometers from the city center since the year 1316 until now has been collected and used. Kijko[2000] method has been applied for estimating the seismic parameters considering lack of suitable seismic data, inaccuracy of the available information and uncertainty of magnitude in different periods. The calculations were performed by using the logic tree method, Five weighted attenuation relationships were used; including Ghodrati et al (2007), 0.3; Ambraseys et al (1996), 0.2 ; Campbell-Bozorgnia (2000), 0.15 ; Campbell-Bozorgnia (2009), 0.15 and Akkar & Bommer(2010), 0.2. Furthermore in order to determine the seismic spectra based on weighted attenuation spectral relationships, and also for the reason of being spectral and more suitable with the conditions of the zone, Ambraseys et al (1996), 0.3 ; Ghodrati et al (2010), 0.3 ; Campbell (1997), 0.2 & Berge-Thierry (2003), 0.2 were used. The SEISRISKIII (1987) software was used to calculate the earthquake hazard. The results of this analysis were submitted including the spectra and maps for 10% and 2% probability of event in 50 years.
Keywords: Seismic Hazard Analysis, Peak Ground Acceleration (PGA), Uniform Seismic Hazard Spectra, Uniform Spectra, Attenuation Relations, Golpayegan and Iran.

Scope of the Article: Behaviour of Structures under Seismic Loads