Comparison of recorded and simulated ground motions for NZS1170.5-based 3D building response analysis (2019)
AuthorsMcGann C, Loghman V, Tarbali K, Bradley B, Chandramohan R, Pettinga Dshow all
Validating dynamic responses of engineered systems subjected to simulated ground motions is essential in scrutinising the applicability of simulated ground motions for engineering demand analyses. This paper compares the responses of two 3D building models subjected to recorded and simulated ground motions scaled to the NZS1170.5 design response spectrum, in order to evaluate the applicability of simulated ground motions for use in conventional engineering practice in New Zealand. The buildings were designed according to the NZS1170.5 and physically constructed in Christchurch prior to the 2010-2011 Canterbury earthquakes. 40 recorded ground motions from the 22 February 2011 Christchurch earthquake, along with the simulated ground motions for this event from Razafindrakoto et al. (2018) are considered. The seismic responses of the structures are principally quantified via the peak floor acceleration and maximum inter-storey drift ratio. Overall, the results indicate a general agreement in seismic demands obtained using the recorded and simulated ensembles of ground motions and provide further evidence that simulated ground motions using state-of-the-art methods can be used in code-based structural performance assessments inplace of, or in combination with, ensembles of recorded ground motions.
CitationMcGann C, Loghman V, Tarbali K, Bradley B, Chandramohan R, Pettinga D (2019). Comparison of recorded and simulated ground motions for NZS1170.5-based 3D building response analysis. Auckland: 2019 Pacific Conference on Earthquake Engineering. 04/04/2019-06/04/2019.
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