高层建筑被动混合控制的波动分析
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摘要
本文提出了一种将基础隔震系统与调频质量阻尼器（ＴＭＤ）相结合的被动混合控制系统、计算了带有基础隔震系统，调频质量阻尼器（ＴＭＤ）及其混合控制系统的高层建筑在地面水平运动作用下的振动波及其功率流大小。文中比较了不同控制结构在１９４０ＥｌＣｅｎｔｒｏ地震动作用下的加速度峰值、层间位移峰值和最大层间剪力值。理论及数值结果表明：这种被动混合控制系统能够非常有效地抑制强地面运动作用下高层建筑的振动，它不仅大大地减小了地面运动输入到上部结构的振动功率流，而且明显地降低了基础隔震系统内部的振动功率流，从而保证了中高层基础隔震建筑物在强地面运动作用下既有较好的隔震效果，又有较强的稳定性和完整性。
The relative advantages of several passive control strategies including the separate or combined use of base isolation and TMD system to reduce the response of tall buildings are studied through the use of traveling wave and power flow approach Numerical results of the power flow of structures with different control systems are presented together with peak values of absolute acceleration and relative displacement subjected to a ground excitation corresponding to NS component of the 1940 El Centro ground motion record It is found that the combined use of passive base isolation and TMD system at the bottom or at the top of the building can effectively reduce the seismic response of the superstructure and the base isolation system,and then can protect the safety and integrity of the base isolation system
The relative advantages of several passive control strategies including the separate or combined use of base isolation and TMD system to reduce the response of tall buildings are studied through the use of traveling wave and power flow approach Numerical results of the power flow of structures with different control systems are presented together with peak values of absolute acceleration and relative displacement subjected to a ground excitation corresponding to NS component of the 1940 El Centro ground motion record It is found that the combined use of passive base isolation and TMD system at the bottom or at the top of the building can effectively reduce the seismic response of the superstructure and the base isolation system,and then can protect the safety and integrity of the base isolation system
引文
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