Buckling-Restrained Bracing System with Ultra-High-Performance Fiber Concrete

Recently, buckling-restrained braces (BRBs) have been widely implemented as seismic load resistance systems in buildings to enhance their response against dynamic vibration. However, during catastrophic earthquakes, the steel core BRB devices fully yields, which causes lose its functionality. While incorporation of various filler materials, such new high-performance concretes, has potential performance (BRBs), there remains a notable gap regarding comprehensive research investigating this aspect. Therefore, study assessed effect implementing ultra-high-performance concrete (UHPFRC) material on behavior. For purpose, finite element model for proposed was developed and hysteresis analysis results under incremental cyclic loads were investigated. Then, prototype with UHPFRC cast experimentally tested by using actuator. Based testing results, design device named rubber brace (RBRB) developed, hyperelastic components between an additional load-bearing mechanism vibration dissipation capacity. Subsequently, newly assess device’s performance. The demonstrate enhancement capacity energy RBRB compared conventional BRBs.