Incorporating the influence of duration on dynamic deformation capacity in structural design and assessment (2021)
The dynamic deformation capacity of a structure is the peak storey drift ratio it can safely withstand without collapsing due to dynamic instability. In a previous study, the authors developed a robust procedure to compute this quantity by conducting incremental dynamic analysis and demonstrated that structures, on average, possess lower dynamic deformation capacities under longer duration ground motions. This paper proposes a method to explicitly consider this effect of ground motion duration in seismic assessment of existing buildings. Preliminary results indicate that the dynamic deformation capacity of a structure at short durations compares well with its static deformation capacity computed via nonlinear static pushover analysis. These results are used to develop a relationship to adjust the static deformation capacity of a reinforced concrete structure based on the mean duration of anticipated ground motions.
CitationBhanu V, Chandramohan R, Sullivan T (2021). Incorporating the influence of duration on dynamic deformation capacity in structural design and assessment. Christchurch, New Zealand: New Zealand Society for Earthquake Engineering 2021 Annual Conference.
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ANZSRC Fields of Research37 - Earth sciences::3706 - Geophysics::370609 - Seismology and seismic exploration
40 - Engineering::4005 - Civil engineering::400509 - Structural dynamics
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Investigating the influence of ground motion duration on the dynamic deformation capacity of reinforced concrete framed structures Bhanu V; Chandramohan R; Sullivan TJ (2019)Recent studies have demonstrated the effect of earthquake ground motion duration on structural collapse capacity. They have also proposed methods to explicitly account for this effect of duration in structural design and ...
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