| dc.description.abstract | In the past decade, the disasters caused by several well-known large earthquakes, both domestically and internationally, have drawn attention to the effects of near-fault ground motions. These earthquakes typically involve ground motions with velocity pulses, which damage to structures is bigger than the Far-Fault earthquakes. Therefore, this study focuses on evaluating the feasibility of using a previously designed[21]configuration of double-oval steel plate dampers in buckling-restrained steel frames under near-fault loading protocol. The study aims to define its application feasibility under near-fault effects, observe its structural behavior, and conduct a detailed comparison with configurations under cyclic loading protocol.
To assess its feasibility under near-fault effects, this research conducted a series of loading tests on specimens with different cross-sectional depths and eccentricities designed based on previous studies[21]. From the test results, it is evident that compared to cyclic loading patterns, this design maintains stable load-bearing capacity even under near-fault effects, with no occurrence of out-of-plane buckling behavior. Compared to moment-resisting frames, this design not only effectively preserves the integrity of the main structure but also enhances its seismic performance. Its strength can exceed that of moment-resisting frames by more than 1.83 times, and the cumulative energy dissipation can also increase by more than 1.4 times. This indicates that incorporating this design into moment-resisting frames significantly enhances their load-bearing capacity and seismic performance, making it an effective and feasible design solution. | en_US |