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Failure Modeling of Bridge Components Subjected to Blast Loading Part II: Estimation of the Capacity and Critical Charge

  • Quintero, Russ (Dept. of Civil, Architectural and Environmental Engineering, University of Missouri-Rolla) ;
  • Wei, Jun (Dept. of Mechanical and Aerospace Engineering, Arizona State University) ;
  • Galati, Nestore (Structural Group, Inc., Strengthening Division) ;
  • Nanni, Antonio (Dept. of Civil, Architectural and Environmental Engineering, University of Miami)
  • Published : 2007.12.30

Abstract

The purpose of this paper is the assessment of the capacity of the reinforced concrete (RC) elements of an arch bridge when they are subjected to contact and near-contact explosive charges of various amounts, and the estimation of the critical charges for these components. The bridge considered is the Tenza Viaduct, a decommissioned structure south of Naples, Italy. Its primary elements, deck, piers and arches were analyzed. The evaluation was accomplished via numerical analyses that made possible to obtain the elements dynamic response when they are exposed to blast loading conditions. To evaluate the member's capacities, failure criteria for deck, piers and arches were proposed based on concrete damage parameters. Additionally, curves relating the explosive charge to the residual capacity and to damage level of the elements were also developed. The results of this work were taken into account to investigate the progressive collapse of the global structure.

Keywords

References

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  2. Effect of Blast Local Damage on Flexural Strength of RC Beams and Blast Resistance According to Variation of Shear Rebar Placement vol.15, pp.2, 2015, https://doi.org/10.9798/KOSHAM.2015.15.2.71
  3. Evaluation of Local Damages and Residual Performance of Blast Damaged RC Beams Strengthened with Steel Fiber and FRP Sheet vol.26, pp.5, 2014, https://doi.org/10.4334/JKCI.2014.26.5.627