8045

7480

كارشناسي ارشد

سازه

اصفهان: دانشگاه صنعتي اصفهان، دانشكده عمران

1391

هشت،141ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

كياچهربهفرنيا

فرهاد بهنام فر

30/7/92

حسين تاجمير رياحي، مجتبي ازهري

مهندسي عمران

ID7480

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Seismic Vulnerability Assessment of Mass Irregular Steel Frames by Fragility Functions Amir Hossein Fakhimi ah fakhimi@cv iut ac ir Date of Submission Department of Civil Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Kiachehr Behfarnia kia@cc iut ac ir Abstract Earthquakes are the most important causes of structural damage that are followed with financial and life losses Hence it is important that buildings performance be evaluated Uncertainties in the seismic demands and structural capacity should be considered in the performance assessment of structures Fragility curves are the current tools for performance assessment As regards vertical mass irregularities in building causes different behavior than ordinary structures it is important that performance of these buildings be evaluated This uses IDA incremental dynamic analysis for derivation of fragility curves Spectral acceleration in the fundamental period and interstory drift ratio is used as IM Intensity Measure and DM Damage Measure respectively 5 9 12 and 15 stories steel frames were considered Mass irregularity was considered at top middle and bottom story of each frame hence fragility curves develop for four cases three cases for irregular frames and one case for regular frame Results of investigation showed vertical mass irregularities in structures caused increase in probability of collapse Keywords Fragility Curve Mass Irregularity Incremental Dynamic Analysis Special Steel Fram PDF created with pdfFactory trial version www pdffactory com

كياچهربهفرنيا

فرهاد بهنام فر

حسين تاجمير رياحي، مجتبي ازهري