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Experimental and numerical studies on ribbed bracing system

Arzeytoon, A ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1002/tal.1493
  3. Publisher: John Wiley and Sons Ltd , 2018
  4. Abstract:
  5. Ribbed bracing system (RBS) is an innovative structural system designed to eliminate the buckling of braces and enhance the behavior of structures under seismic loads. In this study, a collaborative performance of 2 RBS devices bracing a frame was assessed numerically and experimentally. In the numerical phase, the collaboration of ribbed braces at various stages of reversal loading was elaborated mathematically and was used for representing the system using finite element modeling. In the next phase, the numerically observed behavior was validated experimentally by conducting cyclic quasistatic tests of the proposed configurations. Two alternative RBS configurations—called completely closed (CC) and improved centering (IC)—were considered in this regard. Various characteristics of CC- and IC-RBS configurations were evaluated using validated methods, after which they were compared against configurations of concentrically braced frames and buckling-restrained braces. The stiffness and the energy absorption capacity of CC-RBS configuration were shown to exceed all the considered bracing types. IC-RBS, on the other hand, showed the lowest residual drift. The CC-RBS configuration was also shown to have excellent performance under moderate loadings experienced under service level. Copyright © 2018 John Wiley & Sons, Ltd
  6. Keywords:
  7. Behavior improvement ; Buckling elimination ; Ribbed bracing system ; Energy absorption ; Stiffness ; Bracing systems ; Buckling restrained braces ; Concentrically braced frames ; Energy absorption capacity ; Experimental ; Experimental and numerical studies ; Lateral stiffness ; Integrated circuits
  8. Source: Structural Design of Tall and Special Buildings ; Volume 27, Issue 13 , 2018 ; 15417794 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/pdf/10.1002/tal.1493