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Earthquakes and Structures
  Volume 11, Number 3, September 2016, pages 445-459
DOI: http://dx.doi.org/10.12989/eas.2016.11.3.445
 


Ground motion selection and scaling for seismic design of RC frames against collapse
Zeinab Bayati and Masoud Soltani

 
Abstract
    Quantitative estimation of seismic response of various structural systems at the collapse limit state is one of the most significant objectives in Performance-Based Earthquake Engineering (PBEE). Assessing the effects of uncertainties, due to variability in ground motion characteristics and random nature of earthquakes, on nonlinear structural response is a pivotal issue regarding collapse safety prediction. Incremental Dynamic Analysis (IDA) and fragility curves are utilized to estimate demand parameters and seismic performance levels of structures. Since producing these curves based on a large number of nonlinear dynamic analyses would be time-consuming, selection of appropriate earthquake ground motion records resulting in reliable responses with sufficient accuracy seems to be quite essential. The aim of this research study is to propose a methodology to assess the seismic behavior of reinforced concrete frames at collapse limit state via accurate estimation of seismic fragility curves for different Engineering Demand Parameters (EDPs) by using a limited number of ground motion records. Research results demonstrate that accurate estimating of structural collapse capacity is feasible through applying the proposed method offering an appropriate suite of limited ground motion records.
 
Key Words
    ground motion selection; scaling method; incremental dynamic analysis; reinforced concrete frames; fragility curves; collapse limit state
 
Address
Faculty of Civil and Environmental Engineering, Tarbiat Modares University, Jalaale-al Ahmad Ave., Tehran, Iran
 

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