NHESS Natural Hazards and Earth System Sciences NHESS Nat. Hazards Earth Syst. Sci. 1684-9981 Copernicus Publications Göttingen, Germany 10.5194/nhess-10-1069-2010 Performance based design of reinforced concrete beams under impact Tachibana S. 1 Masuya H. 2 Nakamura S. 3 Hokukon Co., Ltd., Fukui, Japan Faculty of Environmental Design, Institute of Science and Engineering, Kanazawa University, Kanazawa, Japan Nihon Samicon Co., Ltd., Niigata, Japan 01 06 2010 10 6 1069 1078 Copyright: © 2010 S. Tachibana et al. 2010 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/10/1069/2010/nhess-10-1069-2010.html The full text article is available as a PDF file from https://nhess.copernicus.org/articles/10/1069/2010/nhess-10-1069-2010.pdf

The purpose of this research is to collect fundamental data and to establish a performance-based design method for reinforced concrete beams under perpendicular impact load. <br><br> Series of low speed impact experiments using reinforced concrete beams were performed varying span length, cross section and main reinforcement. <br><br> The experimental results are evaluated focusing on the impact load characteristics and the impact behaviours of reinforced concrete beams. Various characteristic values and their relationships are investigated such as the collision energy, the impact force duration, the energy absorbed by the beams and the beam response values. Also the bending performance of the reinforced concrete beams against perpendicular impact is evaluated. <br><br> An equation is proposed to estimate the maximum displacement of the beam based on the collision energy and the static ultimate bending strength. The validity of the proposed equation is confirmed by comparison with experimental results obtained by other researchers as well as numerical results obtained by FEM simulations. The proposed equation allows for a performance based design of the structure accounting for the actual deformation due to the expected impact action.

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