Title: Empirical Formulas for Designing Reinforced Concrete Beams under Impact Loading

Author(s): Norimitsu Kishi and Hiroshi Mikami

Publication: Structural Journal

Volume: 109

Issue: 4

Appears on pages(s): 509-520

Keywords: falling-weight impact test; impact force; impact loading; impact-resistant design; performance-based design; reinforced concrete beam; residual deflection

DOI: 10.14359/51683870

Date: 7/1/2012

Abstract:
To establish an impact-resistant design procedure for reinforced concrete (RC) structures based on the performance-based design concept, an evaluation method for the impact-resistant capacity of the structures needs to be developed. Until now, a particular method for beams has not yet been specified worldwide. To achieve this, falling-weight impact tests on a total of 36 beams with varying section parameters were conducted and the key factors for better representing the impact behavior of the beams were investigated. Two empirical equations were derived based on the experimental results. By using these equations, the required static flexural load-carrying capacity of an RC beam may be determined by specifying the limit state with the maximum and residual deflections of the beam.