12/27/2023 0 Comments EndNote 21.2.17387 instaling![]() ![]() ![]() ![]() The study investigated the effectiveness of cross-story installation of a viscous damper by conducting eigenvalue analyses of 2DOF models and earthquake response analyses of a two-story timber frame house subjected to the 2016 Kumamoto earthquake and other major earthquakes. Although viscous dampers are normally installed following an inter-story placement (i.e., between two adjacent floors), another promising placemen is the cross-story installation wherein a damper is installed between the rooftop and the base of the structure across intermediate floors. Therefore, small-size viscous dampers can be used to reduce damage caused by major earthquakes. Timber frame structures are commonly used in houses that use squared-off timber beams, columns, and walls as lateral load-bearing members. The work by Nakamura and Matsumura investigates the cross-story installation of a small-size viscous damper in a timber frame house to evaluate its advantage over the conventional inter-story installation, where a damper is installed between adjacent floors. The research contributions collected in this Research Topic deal with this topic. On the contrary, other younger systems, such as novel energy dissipation systems, inerter-based vibration control systems, negative-stiffness vibration isolators, magneto-rheological dampers, still require further theoretical studies and experimental investigations before their full technological validation. Although some of those systems, like base-isolation systems and passive viscous dampers, are quite matured and often used in practical applications, there are still some open issues and research-related aspects deserving further investigations. The capabilities of such devices and control systems in reducing structural vibrations, demonstrated by past hazardous events, make them particularly desirable for both new and existing strategic structures, such as police stations, schools, hospitals, and nuclear power plants and critical infrastructure, such as bridges, tunnels, and sea walls. Energy dissipation devices and vibration-control systems are increasingly being used for damage mitigation induced by earthquakes and other hazards such as strong wind, storms, hurricanes, and tsunamis that may strike structures and infrastructure. ![]()
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