Fragility Assessment of a Low-Rise Building with Plan Irregularities under Strong Seismic Motions
محل انتشار: دهمین کنگره بین المللی مهندسی عمران
سال انتشار: 1394
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,150
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شناسه ملی سند علمی:
ICCE10_0919
تاریخ نمایه سازی: 19 تیر 1394
چکیده مقاله:
This paper is an attempt to study the fragility of a low-rise building with mass irregularities in plan with emphasis on collapse region of response. The study evaluates the fragility and collapse response of a three-dimensional 3-story reinforced concrete model with unidirectional mass eccentricities in plan equal to 0% (symmetrical), 10%, 20% and 30% using extensive nonlinear incremental dynamic analyses. Performance of each model is examined by means of calculation of collapse margin ratios (CMRs) and the associated fragility curves. Results demonstrate that substantial differences exist between behavior of torsional (irregular) and non-torsional (regular) buildings in terms of safety margin against collapse and fragility curves. Results indicate that current seismic design parameters could be non-conservative for low-rise buildings with high levels of plan eccentricity and such structures may not meet the design target performance objectives
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نویسندگان
Salar Manie
Department of Civil Engineering, Islamic Azad University, Sanandaj Branch,Sanandaj, Iran
Abdoreza Sarvghad-Moghadam
International Institute of Earthquake Engineering & Seismology (IIEES),Tehran, Iran
Mohsen Ghafory-Ashtiany
International Institute of Earthquake Engineering & Seismology (IIEES),Tehran, Iran