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Structural Engineering and Mechanics
  Volume 42, Number 3, May10 2012, pages 363-381
DOI: http://dx.doi.org/10.12989/sem.2012.42.3.363
 


The influence of load pulse shape on pressure-impulse diagrams of one-way RC slabs
Wei Wang, Duo Zhang and Fangyun Lu

 
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 pressureimpulse diagram is proposed to different damage levels and different blast loading shapes.
 
Key Words
    blast load; SDOF; pressure-impulse diagram; one-way concrete slab
 
Address
Wei Wang, Duo Zhang and Fangyun Lu: Institute of Technique Physics, College of Science, National University of Defense Technology, Changsha, Hunan, 410073, P.R. China
 

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