NHESS Natural Hazards and Earth System Sciences NHESS Nat. Hazards Earth Syst. Sci. 1684-9981 Copernicus Publications Göttingen, Germany 10.5194/nhess-12-1-2012 Orientation effects of horizontal seismic components on longitudinal reinforcement in R/C frame elements Kostinakis K. G. 1 Athanatopoulou A. M. 1 Avramidis I. E. 1 Aristotle University of Thessaloniki, Thessaloniki, Greece 02 01 2012 12 1 1 10 Copyright: © 2012 K. G. Kostinakis et al. 2012 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://nhess.copernicus.org/articles/12/1/2012/nhess-12-1-2012.html The full text article is available as a PDF file from https://nhess.copernicus.org/articles/12/1/2012/nhess-12-1-2012.pdf

The present paper investigates the influence of the orientation of recorded horizontal ground motion components on the longitudinal reinforcement of R/C frame elements within the context of linear response history analysis. For this purpose, three single-story buildings are analyzed and designed for 13 recorded bi-directional ground motions applied along the horizontal structural axes. The analysis and design is performed for several orientations of the recording angle of the horizontal seismic components. For each orientation the longitudinal reinforcement at all critical cross sections is calculated using four methods of selecting the set of internal forces needed to compute the required reinforcement. The results show that the reinforcement calculated by three of the applied methods is significantly affected by the orientation of the recording angle of ground motion, while the fourth one leads to results which are independent of the orientation of the recording angle.

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