高层建筑MTMD风振控制的参数优化

对高层建筑MTMD(多调质阻尼器)风振控制的参数优化进行了研究。在保证模态参数基本不变的前提下，将高层建筑的三维有限元模型简化为一维多层剪切模型。推导了在高层建筑任意一层或多层上安装TMD后，其频域空间传递函数的显示表达，获得了高层建筑在风载荷作用下的随机响应．并采用遗传算法对MTMD进行参数优化。最后．给出了对香港某高层建筑进行MTMD参数优化的算例。

Parameter Optimization of Multi-TMDs for Wind-excited Vibration Suppression of Tall Buildings

A study on optimizing the parameters of multiple tuned mass dampers(MTMD) for wind_exited vibration suppression of high_rise buildings is described.Based on the three_dimensional finite element model for design analysis of tall building,a reduced_order lumped mass MDOF model with same modal properties as the original model is developed for MTMD design.By dividing the building_damper system into two sub_structures,transfer functions of the building with MTMD attached at arbitrary stories are explicitly derived,and random responses of the building_damper system are accurately expressed by adopting appropriate wind force spectrum and accounting for spatial coherence of the excitation.With these analytically derived formulations,the genetic algorithm is then applied to search optimal parameters of the MTMD,which achieve the maximum response suppression for the building.A case study of an actual 50_storey tall building in HK using MTMD for the wind_excited response mitigation is given as an example.