Seismic Analysis Of Super High-rise Building Structure Based On Friction Pendulum System-multiple Tuned Mass

Along with the accelerating steps of urbanization in our country and the increasing number of the high-rise buildings, how to improve the anti-earthquake capability is the urgent problem to be solved. Structural vibration control technology is a frontier of civil structure in earthquake prevention and disaster reduction. The tuned mass damper(Tuned Mass Damper, TMD) has better energy dissipation effect and more controllability than the common anti-earthquake methods, especially in response controlled by fundamental frequency. Friction pendulum system- multiple tuned mass damper(FPS-MTMD) is invented as a new damping device in recent years, it has much more advantages than the traditional MTMD. Such as, it can dissipate energy by frictional damping, control self-limiting and achieve resetting.The research object is based on with and without of FPS-MTMD device on frame-core wall super high-rise building, it carries out a series of steps:(1)According to the MTMD design optimization method, the autonomous vibration characteristics of FPS-MTMD is studied and the oscillation equations for FPS-MTMD structure is derived. Then, the studies further illustrates the application idea of FPS-MTMD.(2)This study makes use of finite element software to do the numerical modeling for overrun frame-core wall high-rise building. The research improves this numerical modeling and the one adds FPS-MTMD both are accuracy during fundamental analysis(modal analysis and response spectrum analysis).(3)Time-history analysis for the original model and the controlled model improves the influence from FPS-MTMD in frequent earthquake. And the study does analysis for anti-earthquake effect in rare earthquake.(4)The results are compared by the analysis of FPS-MTMD and equivalent FPS-TMD on during stage. The frequency spectrum shows difference between the two devices. Then the suggestions are be put forward for practical use.