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