Study of Buried Blast Load Compared with Near-field Earthquake & Effect of Damping & Structural Height

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Authors

1 Master's degree, Malik Ashtar University of Technology, Tehran, Iran

2 Assistant Professor, Malik Ashtar University of Technology, Tehran, Iran.

Abstract

The blast load is an impact load with a short duration and a very high maximum pressure, so it is predictable that the dominant frequencies of ground motion (that released from buried blast) will be at high levels. For consideration of buried blast load, we simulated these phenomena with different amounts of TNT explosion and depths from the semi-infinite environment of two types of hard and soft with Abaqus software, we also recorded time history parameters of blast in free field. For consideration of near-field earthquake loading we used accelerogram records of some earthquakes. By taking the acceleration records of explosive models and having record of earthquakes and obtaining the structural response spectrum a comparison between different models of buried blast and near-field earthquake records has been made. Then, by time history analysis of the one & five-story structural models with different percents damping achieved of blast and earthquake records, the structural responses have been studied and compared considering the height and damping parameters.

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https://creativecommons.org/licenses/by/4.0/

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Journal of Advanced Defense Science & Technology
Volume 14, Issue 3 - Serial Number 53
November 2023
Pages 191-209

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History

  • Receive Date: 29 August 2023
  • Revise Date: 01 November 2024
  • Accept Date: 25 November 2023

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