Seismic geotechnic and dynamic soil behavior analysis of Bahabad city, South East Yazd
Subject Areas :
Ahmad Adib
1
(
استادیار دانشگاه آزاد اسلامی واحد تهران جنوب
)
Akram Kosari
2
(
پژوهشگر مرکز تحقیقات زمین شناسی و محیط زیست زمین کاو
)
Keywords: Site effect, Seismic geotechnic, Microzonation, Bahabad,
Abstract :
Bahabad city is located in south Yazd province of Iran, about 200 Km far from east yazd city. In this study,seismic microzonation of the city is done based on the area seismicity with specific return period, and by usingobtained data of the 5 boreholes to determinate dynamic soil behavior and ground response against earthquake.To analyze site effect precisely, we used EERA program and provided microzonation maps by Kriging methodand using ArcGIS software. The study showed that the city center has a higher amplification factor than the otherparts. The area classified to two ground type: IIb (hard soil with thickness more than 30 m) and IIIb (moderatedense soil) based on standard 2800 of Iran. Maximum acceleration and amplification factor of the surface arehigher and decrease to go around. The center of the city has hard soil with thickness more than 30 m (IIb) andtherefore, maximum spectral acceleration. This trend decreases into the around.