Subassemblage test of buckling-restrained braces with H-shaped steel core

Do Hyun Kim, Chang Hwan Lee, Young-Kyu Ju, Sang Dae Kim

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In this study, a subassemblage test was performed using buckling-restrained braces with an H-shaped core element, which have been proven in a previous uniaxial component test to have good performance. The loading protocol prescribed the quasi-static cyclic pattern with stepwise incremental displacement amplitude. Two different end connections (bolted connection and pin connection) and two different buckling-restrained mechanisms (concrete-filled tube and hollow steel tube) were examined as the test parameters. The performance of the specimen was evaluated by comparing the test results with the recommended provisions for buckling-restrained braces. The test results showed that the compression strength capacity of buckling-restrained brace (BRB) with in-filled concrete increased by about 10% compared with BRB without in-filled concrete. According to test result at same story drift of 2Dbm, structural performance of pin connection specimen without bolt slippage is superior to bolted connection specimen. Also, bolted connection specimens showed similar performance for total energy dissipation and cumulative plastic ductility, regardless of the connection types and the existence of concrete filling.

Original languageEnglish
Pages (from-to)243-256
Number of pages14
JournalStructural Design of Tall and Special Buildings
Volume24
Issue number4
DOIs
Publication statusPublished - 2015 Jan 1

Keywords

  • Buckling-restrained braces
  • Cumulative plastic ductility
  • Cyclic loadings
  • Energy dissipation
  • Steel damper
  • Subassemblage test

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Architecture

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