Performance Evaluation of Steel Structure With Diverse Dampers Under Blast Load

Document Type : Original Article

Authors

1 Assistant Professor, civil engineering faculty.Ihu, Tehran, Iran

2 MA, civil engineering faculty.Ihu, Tehran, Iran

3 MA, civil engineering faculty.Azad Yazd University, Yazd, Iran

Abstract

Nowadays terrorist attacks on civilian facilities have increased.Paying attention to the design of construction sites against the impact loads due to the explosion is important. Identifying the nature of explosive loads and their impact on the structure is one of the important issues to be studied. The explosion is one of the complex phenomena including high strain rate which highly affects the structural elements behavior. Regarding the fact that existing steel structures are typically designed based on conventional gravity and seismic loads, it is required that the performance of these structures be investigated under the explosion load. In this study, the evaluation of simple steel frame behavior with different dampers against explosive load and earthquake is investigated. Nonlinear dynamics analysis is performed on models with 3, 5 and 10 floor structures and in accordance with UFC 3-340-02 at two different levels of explosive charge, in the SAP 2000 software. The results show that between XADAS, friction dampers, Viscose in diagonal system, in the seesaw system, U-shaped with flexural and shear performance and proposed pipe dampers, The displacement dampers have the greatest impact in reducing the structure response. From this Friction damper and pipe and U-shaped with flexural function is more effective.

Keywords

References

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Journal of Structural and Construction Engineering
Volume 8, Issue 5 - Serial Number 43
August 2021
Pages 110-129

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History

  • Receive Date: 25 July 2018
  • Revise Date: 22 December 2018
  • Accept Date: 05 January 2019

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