On the equal displacement aproximation for mid-rise reinforced concrete buildings
Document typeConference report
PublisherInstitute of Structural Analysis and Antiseismic Research School of Civil Engineering. National Technical University of Athens (NTUA)
Rights accessOpen Access
European Commission's projectKaIROS - Keeping and Increasing Resilience Opportunities and Sustainability of communities against earthquakes (EC-H2020-799553)
The equal displacement approximation is a well-known procedure for estimating the non-linear behavior of structures subjected to earthquake ground motions. This procedure plays a significant role in current seismic design, since it constitutes the basic assumption for defining strength reduction factors. In this paper, calculation of the performance point based on this rule is used to estimate engineering demand parameters such as those obtained by advanced probabilistic non-linear dynamic analysis, NLDA. We present a modification to the classic approach, to improve the predictability of the equal displacement rule. Uncertainties in seismic action and structural properties are considered. Mid-rise reinforced concrete buildings will be used as a testbed. To obtain a representative sample of buildings for statistical analysis, we describe the development through implementation of a numerical tool for calculating probabilistic NLDA. This tool, which is expected to evolve into interoperable software for assessing the seismic risk of structures, is developed within the framework of the KaIROS project. The results presented in this paper could be used to estimate the seismic risk of structures in a very simplified manner.
CitationVargas, Y. [et al.]. On the equal displacement aproximation for mid-rise reinforced concrete buildings. A: International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering. "COMPDYN 2019: Computational Methods in Structural Dynamics and Earthquake Engineering: proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering held in Crete, Greece 24-26 June 2019". Institute of Structural Analysis and Antiseismic Research School of Civil Engineering. National Technical University of Athens (NTUA), 2019, p. 5490-5502.
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