تحلیل خطر لرزه ای و تهیه طیف خطر یکسان برای مناطق مختلف شهر کرمان

نوع مقاله: علمی - پژوهشی

نویسندگان

1 استاد، دانشکده مهندسی عمران، دانشگاه علم و صنعت ایران

2 استادیار، دانشکده مهندسی عمران، دانشگاه پیام نور

3 کارشناس ارشد مهندسی زلزله، دانشکده مهندسی عمران، دانشگاه آزاد اسلامی واحد شهرکرد

چکیده

مطالعة حاضر تحت عنوان تحلیل خطر لرزه‌ای و تهیه طیف خطر یکسان برای مناطق مختلف شهر کرمان انجام شده است. مجموعه‌ای از داده‌های لرزه خیزی تاریخی و دستگاهی با پوشش زمانی از قرن هشتم میلادی تا به امروز تا شعاع 200 کیلومتری بکار گرفته شده ومنابع لرزه زا مدل شده‌اند. برای برآورد پارامترهای لرزه‌خیزی باتوجه به کمبود داده‌های مناسب لرزه خیزی و دقت کم اطلاعات موجود و نیز عدم قطعیت در بزرگا در زمانهای مختلف، از روش کیکو  استفاده شده است. در تعیین بیشینه شتاب روی سنگ بستر از روابط کاهندگی مختلف قدرتی و همکاران و زارع و همکاران استفاده شده که با کمک درخت منطقی ‌و به ترتیب با وزن‌های 6/0 و 4/0 با هم ترکیب شده‌اند. تحلیل احتمالی خطر زلزله برای یک شبکه نقاط 13×8 که شهر کرمان را پوشش داد شده و با استفاده از نرم افزار SEISRISK III محاسبه گردیده و جهت تعیین شتاب طیفی از رابطه کاهندگی طیفی قدرتی و همکاران استفاده شده است

کلیدواژه‌ها


عنوان مقاله [English]

Seismic Hazard Analysis and Uniform Hazard Spectra for Different Regions of Kerman

نویسندگان [English]

  • Gholamreza Ghodrati Amiri 1
  • Seyyed Ali Razavian Amrei 2
  • Mohammad Ali Tahmasbi Broujeni 3
1 Professor, Department of Civil Engineering, Iran University of Science & Technology
2 Assistant Professor, Department of Civil Engineering, Payame Noor University
3 MSc Student Eartjquake Engineering, Department of Civil Engineering, Islamic Azad University Shahrkord Branch
چکیده [English]

This paper was present a seismic hazard analysis and uniform hazard spectra for different regions of Kerman city. A collected catalogue containing both historical and instrumental events and covering the period from 8th century AD until now within the area of 200 Km in radius were used and Seismic sources are modeled. Kijko 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. To determine the peak ground acceleration the calculations were performed by using the logic tree method. Two weighted attenuation relations were used; including Ghodrati et al, 0.6 and Zare et al, 0.4. Analysis was conducted for 13×8 grid points over Kerman region and adjacent areas with SEISRISK III software and in order to determine the seismic spectra Ghodrati et al, spectral attenuation relationships was used.

کلیدواژه‌ها [English]

  • Seismicity Parameter
  • Seismic Hazard Analysis
  • Uniform Hazard Spectrum
  • Kerman
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