Energy-based analysis of a steel moment frame with viscous damper under blast loading

Document Type : Original Article

Authors

1 Department of civil engineering, technical and vocational university, tehran, iran

2 Deputy of Sari Municipality

3 noshivani

Abstract

The degree of control of the response and performance of structures under external loads is one of the most important issues in structural and earthquake engineering. Today, the use of modern systems to control structural vibrations has expanded significantly. Viscous dampers are one of the most common tools for controlling structural vibrations against external loads. One of these foreign burdens could be an explosion caused by terrorist attacks. In this research, it has been tried to investigate the behavior of structures with viscous dampers based on energy balance under explosion load. For this aim, two 10-story structures with Moment Resistance Frame (MRF) system and steel Moment Resistance Frame with viscous damper under different explosion scenarios have been analyzed and the dissipated and absorbed energies in the energy balance due to external work have been evaluated. First, to better understand the behavior of these structures, the performance of the structures is evaluated based on the plastic hinges and the relative displacement of the studied stories and finally the effect of viscous damper in reducing the damage of structures using energy balance concepts. The results show that in general, viscous dampers can reduce the damage to an acceptable level and control the behavior of the structure.

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References

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Journal of Structural and Construction Engineering
Volume 9, Issue 5 - Serial Number 58
August 2022
Pages 140-162

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History

  • Receive Date: 16 January 2021
  • Revise Date: 05 October 2021
  • Accept Date: 15 November 2021

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