Research on Design and Mechanical Properties of Buckling-Restrained Energy Dissipation Braces with Round Steel
This paper proposes a novel buckling-restrained energy dissipation brace(BREDB)utilizing low-yield-point round steel bars as the core material,with a circular cross-section for the energy dissipation core.The BREDB is improved from both material and structural perspectives,aiming to simplify the structure,reduce processing losses,and cut costs while maintaining product performance in compliance with current standards.By minimizing material wastage and processing steps,the design achieves cost reduction.Furthermore,a series of structural enhancements are introduced to strengthen the brace's low-cycle fatigue performance and reduce energy consumption,achieved through the reduction of welding.Theoretical formulations and experiments are conducted to explore the working mechanism,mechanical properties,and energy dissipation capabilities of the round steel buckling-restrained energy dissipation brace.The results indicate that compared to steel plate-based BREDBs,this design enhances fatigue performance,with a cumulative plastic ductility factor exceeding 1,500.
Round SteelBuckling-Restrained Energy Dissipation BraceMechanical PropertiesFatigue Performance
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