A Study on Seismic Retrofit of Steel Bridges with Complex Dynamic Behavior by Installing Seismic Dampers

为了对动力行为复杂的钢桥（如拱桥和桁架桥）进行高效的抗震升级或抗震改造，人们进行了一系列广泛的研究，开发即使在3次大地震中也不会丧失其功能的钢或铝合金高性能抗震阻尼器。此外，通过实验和分析证明了在拱桥或桁架桥中安装高性能减震器所带来的减损效果。

In order to contribute to efficient seismic upgrading or seismic retrofit for steel bridges whose dynamic behavior is complex (such as arch and truss bridges), a series of extensive studies have been performed on developing steel or aluminum alloy high-performance seismic dampers that would not loose their functions even for major earthquakes three times. Furthermore, damage reducing effects due to installing high-performance seismic dampers in arch or truss bridges are demonstrated experimentally and analytically.