Seismic design factors for RC special moment resisting frames in Dubai, UAE
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- 作者：Mohammad AlHamaydeh (1) malhamaydeh@aus.edu
Sulayman Abdullah (1)
Ahmed Hamid (1)
Abdilwahhab Mustapha (1) - 关键词：Seismic design factors – ; reinforced concrete – ; special moment resisting frame – ; Dubai – ; UAE
- 刊名：Earthquake Engineering and Engineering Vibration
- 出版时间：December 2011
- 出版年：2011
- 期刊代码：pc502_1671-3664
- 类别：et
- 卷：10
- 期：4
- 页码：495-506
- 数据来源：sp
摘要
This study investigates the seismic design factors for three reinforced concrete (RC) framed buildings with 4, 16 and 32-stories in Dubai, UAE utilizing nonlinear analysis. The buildings are designed according to the response spectrum procedure defined in the 2009 International Building Code (IBC’09). Two ensembles of ground motion records with 10%and 2%probability of exceedance in 50 years (10/50 and 2/50, respectively) are used. The nonlinear dynamic responses to the earthquake records are computed using IDARC-2D. Key seismic design parameters are evaluated; namely, response modification factor (R), deflection amplification factor (C d), system overstrength factor (Ω o), and response modification factor for ductility (R d ) in addition to inelastic interstory drift. The evaluated seismic design factors are found to significantly depend on the considered ground motion (10/50 versus 2/50). Consequently, resolution to the controversy of Dubai seismicity is urged. The seismic design factors for the 2/50 records show an increase over their counterparts for the 10/50 records in the range of 200%–400%, except for the Ω o factor, which shows a mere 30%increase. Based on the observed trends, perioddependent R and C d factors are recommended if consistent collapse probability (or collapse prevention performance) in moment frames with varying heights is to be expected.