10.57647/jsm.2025.1704.14

Seismic Loss Assessment of RC Structures Rehabilitated by Viscous Dampers Designed Based on Performance Index Method

  1. Department of Civil Engineering, No.C., Islamic Azad University, Nour, Iran
  2. Department of Civil Engineering, Babol Noshirvani University of Technology, Babol, Iran

Received: 2025-06-09

Revised: 2025-08-29

Accepted: 2025-09-19

Published in Issue 2025-12-31

How to Cite

Poloee Amirabad, H., Rahimi, S., Hoseinzadeh, M., & Hosseinali Beygi, M. (2025). Seismic Loss Assessment of RC Structures Rehabilitated by Viscous Dampers Designed Based on Performance Index Method. Journal of Solid Mechanics, 17(4). https://doi.org/10.57647/jsm.2025.1704.14

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Abstract

This study aims to evaluate and compare the behavior of viscous dampers designed using the Performance Index (PI) method and the ASCE7 approach. To this end, two categories of 12-story reinforced concrete (RC) moment-resisting frames are considered in this study: standard and substandard structures. The substandard structure is rehabilitated by viscous dampers. Although the PI method is typically utilized in designing Pall friction dampers, in this study, the approach recommended by ASCE7 and the energy-based PI method is employed in designing viscous dampers. Initially, various performance parameters of the structures are compared. The results have demonstrated that lateral displacement and roof acceleration values are lower in the ASCE7 approach than in the PI method. However, the structure equipped with viscous dampers designed via the PI method exhibits lower drift and dissipated plastic strain energy compared to the ASCE7 approach. Then, using Incremental Dynamic Analysis (IDA), fragility and loss function curves are obtained and presented for the three considered structural configurations. The findings revealed that the structure with dampers designed by the PI method has a lower probability of exceedance at a given spectral acceleration compared to other structures. Furthermore, the loss function based on the FEMA P-58 methodology indicates that, at the design spectral acceleration, the repair-to-construction cost ratio at the probability of 50% is 0.45 for structures without dampers, and 0.07 and 0.08 for those with dampers designed using the PI and ASCE7 methods, respectively.

Keywords

  • Viscous damper,
  • Performance index,
  • Fragility analysis,
  • Loss function,
  • FEMA P-58 methodology

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