Numerical Investigation of the Seismic Performance of an Innovative Type of Buckling-Restrained Brace (BRB)

Ali Naghshineh, Oliver Fischer, Nasreen B. Pathan, Logan Couch, Fariborz M. Tehrani

Research output: Contribution to journalArticlepeer-review

Abstract

Previous studies have demonstrated that the inclusion of tire-derived aggregate (TDA) enhances the damping, ductility, and toughness of concrete mixtures. The effectiveness of tire-derived aggregate as a ductile material with a higher damping ratio and lower density in buckling-restrained braces has been examined at California State University’s Structures Laboratory (CSU). Through experimental and theoretical investigations, this study compares the structural application of buckling-restrained braces with TDA and with conventional concrete infill subjected to various ground motions as well as artificial excitations. The evaluations include modeling a full-scale experimental setup equipped with a single-leg BRB utilizing ETABS 2016 and OpenSees 2000 software. The effectiveness of the application is demonstrated through a comparison of accelerations, displacements, stiffness, and damping ratios between TDA and concrete filling. Additionally, a design guideline for TDA-filled buckling-restrained braced frames is provided.

Original languageEnglish
Pages (from-to)2978-2990
Number of pages13
JournalEng
Volume4
Issue number4
DOIs
StatePublished - Dec 2023

Keywords

  • buckling-restrained braced frame
  • ductility
  • dynamic response
  • experimental
  • passive control
  • seismic performance
  • steel frame
  • tire-derived aggregate
  • toughness

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