Structural Engineering and Mechanics

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The influence of load pulse shape on pressure-impulse diagrams of one-way RC slabs

  • Wang, Wei (Institute of Technique Physics, College of Science, National University of Defense Technology) ;
  • Zhang, Duo (Institute of Technique Physics, College of Science, National University of Defense Technology) ;
  • Lu, Fangyun (Institute of Technique Physics, College of Science, National University of Defense Technology)
  • Received : 2011.02.16
  • Accepted : 2012.04.02
  • Published : 2012.05.10
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Abstract

This study is aimed at providing an efficient analytical model to obtain pressure- impulse diagram of one-way reinforced concrete slabs subjected to different shapes of air blast loading using single degree of freedom method (SDOF). A tri-linear elastic perfectly plastic SDOF model has been used to obtain the pressure-impulse diagram to correlate the blast pressure and the corresponding concrete flexural damage. In order to capture the response history for the slab, a new approximately SDOF method based on the conventional SDOF method is proposed and validated using published test data. The influences of pulse loading shape on the pressure-impulse diagram are studied. Based on the results, a pressure-impulse diagram generation method using SDOF and an analytical equation for the pressure-impulse diagram is proposed to different damage levels and different blast loading shapes.

Keywords

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