Rotational Friction Dampers in Industrial Structures

Dehshiri, Danial; Rezaei Sadrabadi, َAmirmohammad; Tajammolian, Hamed; Yazdin, Mehdi

doi:10.22065/jsce.2024.435611.3332

Rotational Friction Dampers in Industrial Structures

Document Type : Original Article

Authors

Danial Dehshiri ¹

َAmirmohammad Rezaei Sadrabadi ²

Hamed Tajammolian ³

Mehdi yazdin ⁴

¹ MSc., Department of Civil Engineering, Yazd University, Yazd, Iran

² MSc., Department of Engineering, Science and Arts University, Yazd, Iran

³ Assistant Professor, Faculty of Civil Engineering, Yazd University, Yazd, Iran

⁴ Assistant Professor, University of Science and Arts, Yazd, Iran

10.22065/jsce.2024.435611.3332

Abstract

In recent decades, one of the main topics of research in the field of structural engineering has been the introduction of various solutions to reduce the response of the structures against dynamic forces. For this purpose, the use of dampers is one of the methods of reducing earthquake excitation, controlling vibrations and energy loss on the structure, by increasing its stiffness, resistance and capacity. The use of these devices in the design of new buildings as well as the retrofitting of the existing ones is easily possible. Rotational friction dampers are an example of cost-effective, practical and effective control tools that absorb earthquake energy by sliding motions with stable hysteretic and non-linear behavior. In this research, due to the importance of this issue, industrial structures such as shelters have been investigated with and without dampers and the effect of dampers on various responses of the structure has been investigated. In this regard, three models with different specifications have been used. In order to investigate the discussed structures, the characteristics of seven pairs of far-field earthquake records introduced in the FEMA-P695 have been used, which were investigated with the help of nonlinear time history analysis. The results of the present research show that rotational friction dampers do not have a positive effect on the transverse frames of the shelter, but they have a positive and significant effect on the longitudinal frames. Among the most important of them, we can mention the positive effect and significant reduction of base shear and structure acceleration. On average, each of these two parameters decreased by 47% and 34% respectively for the structures.

Keywords

Time History Analysis

Friction damper

Industrial structure

Shelter

Accelerogarph

Subjects

Active and Passive Control of Structures

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