Parametric Analysis of Reinforced Concrete Beams Under Blast Load

Document Type : -

Authors

1 Malek Ashtar University of Technology

2 Malek Ashtar University of Technology- Iran

Abstract

In order to resolve long analysis and designing process and providing an easy and accessible method for calculating the response of concrete beams to explosion load, the dynamic analysis method for one degree of freedom system has been used to analyze this type of structure and its deflection. The explosive load is used exponentially and the behavior of the concrete structure is considered as elasto-plastic equivalent. Then, using two parameters of load duration and time to reach the end of the elastic region to determine the range of responses, different modes have been considered to calculate the response equation and determine the maximum deflection of the concrete beam by theoretical analysis of SDOF equations of motion for the specified ranges, and finally the parametric responses of concrete beams to the explosion load were obtained. By comparing the output of these relationships with the results of laboratory tests, the finite element model and the relationships of the UFC 3-340-02, the accuracy of the proposed method is ensured. By performing different analysis under different loading condition and different structural properties, it was found that the accuracy of the proposed method is above 90%.
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History

  • Receive Date: 19 December 2022
  • Revise Date: 03 March 2023
  • Accept Date: 09 April 2022

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