Experimental Study and Finite Elements of BRBF for AISC 341-16

نوع مقاله : مقاله کامل پژوهشی

نویسندگان

دانشکده مهندسی عمران، دانشگاه تبریز

10.22034/ceej.2023.59023.2295

چکیده

After the Northridge earthquake, special concentrically braced frames (SCBF) have recently been introduced; further studies conducted to eliminate their shortcomings, design flaws and implementation of connector plates and their vague behavior after seismic load cycles led to development of a new CBF called buckling restrained braced frame (BRBF). In these braces, the steel core which is enclosed within steel profile filled by special concrete encloses the core completely and prevents buckling and increased critical load until compressive axial capacity is only restrained by steel yield tension. This allows the steel core resist against axial forces using entire resistance of the steel as long as casing resists against tensile buckling. As a result, braces act as structural fuse and lead to plastic behaviors, beams, and columns remain elastic in the seismic process. This study builds, tests and numerically models a buckling restrained brace to evaluate sample adequacy to meet requirements of the AISC 341-16 code.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Experimental Study and Finite Elements of BRBF For AISC 341-16

نویسندگان [English]

  • Hedayat Veladi
  • Bahamn Farahmand Azar
  • Omid Ghashangh pour
  • Erfan Yahyazad
Department of Structural Engineering, Faculty of Civil Engineering, University of Tabriz, Tabriz 5166616471, Iran
چکیده [English]

After the Northridge earthquake, special concentrically braced frames (SCBF) have recently been introduced; further studies conducted to eliminate their shortcomings, design flaws and implementation of connector plates and their vague behavior after seismic load cycles led to development of a new CBF called buckling restrained braced frame (BRBF). In these braces, the steel core which is enclosed within steel profile filled by special concrete encloses the core completely and prevents buckling and increased critical load until compressive axial capacity is only restrained by steel yield tension. This allows the steel core resist against axial forces using entire resistance of the steel as long as casing resists against tensile buckling. As a result, braces act as structural fuse and lead to plastic behaviors, beams, and columns remain elastic in the seismic process. This study builds, tests and numerically models a buckling restrained brace to evaluate sample adequacy to meet requirements of the AISC 341-16 code.

کلیدواژه‌ها [English]

  • Buckling restrained brace
  • Buckling restrained braced frame
  • Ductility
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