混合质量阻尼器(HMD)抗震控制研究

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

Seismic Control of the Building with Hybrid Mass Damper System

The collapse of buildings causing massive people death and property loss is the main damage of earthquake. Continuous improvement in the anti-seismic design of the building is a traditional way to reduce the damage. With the development of the study on structural vibration control, a new route to reduce the damage has been found. Based on "three levels" standards of anti-seismic design of buildings, hybrid mass damper (HMD) is now applied to the seismic control. Tuned mass damper (TMD) is used when low level earthquake occurs frequently. The actuator is motivated when moderate or high level earthquake occurs and when the control goal is exceeded. Then TMD turns to active mass damper (AMD). The appended mass, driven by the control force, gives a larger force to the main structure, so that the control goal could be maintained. The theoretical analysis and simulating results show that HMD may be applied to a wide range of earthquake excitation and the control effectiveness is quite evident.