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建筑物的倒塌是地震造成破坏的主要形式之一 ,它导致大量的人员和财产损失。不断改进建筑物的抗震设计方法是传统的抗震减灾措施。随着结构振动控制领域的不断发展 ,它为建筑抗震减灾提供了一个新的途径。根据建筑结构抗震设计“三水准”的设防准则 ,混合质量阻尼器 (HybridMassDamper ,HMD)被应用于建筑抗震减灾中 ,对于发生频度较高的低烈度地震 ,主要通过调谐质量阻尼器 (TunedMassDamper ,TMD)控制结构的振动 ;而当发生烈度较高的地震或TMD不能满足控制目标要求时 ,启动作动器施加主动控制力 ,用主动控制力驱动TMD的附加质量块 ,提供给主结构更大的控制力 ,把TMD转化为主动质量阻尼器 (ActiveMassDemper ,AMD) ,取得预期的控制效果。理论分析和仿真计算表明 ,HMD适用地震激励的范围广 ,控制效果显著
The collapse of buildings was one of the major forms of damage caused by the earthquake, which resulted in a significant loss of personnel and property. The aseismic design method of continuously improving buildings is the traditional measures of earthquake disaster reduction. As the field of structural vibration control continues to evolve, it provides a new avenue for building seismic disaster reduction. According to the fortification criteria of “Three-level” of seismic design of building structure, Hybrid Mass Damper (HMD) is applied to seismic reduction of buildings. For low-intensity earthquakes with high frequency, Tuned Mass Damper TMD) to control the structure vibration; and when the intensity of the earthquake or TMD can not meet the control target requirements, start the actuator to exert active control force, with the active control force to drive the TMD additional mass to provide the main structure larger Control, the TMD into active mass damper (ActiveMassDemper, AMD), to achieve the desired control effect. Theoretical analysis and simulation results show that HMD is suitable for a wide range of seismic excitation and has significant control effects