随机激励下考虑SSI效应的TMD-结构控制参数优化设计

摘要

TMDs are main devices of seismic control and wind resistance control of high-rise buildings.The compatibility of a structure's frequencies and TMD parameters plays a decisive role in the control effect.In the existing codes, the influence of soil on the upper structure's frequencies is neglected, so that the vibration control of TMD-structure is out of line with the actual engineering situation.In this paper, the maximum inter-storey displacement is taken as the control index, and the optimization algorithm and the theory of probability density method combining with ten layers of TMD concrete frame structure parameters optimization are used to study soil-structure interaction (SSI) effects on the TMD structure of the control effect, and the optimal design parameters of the TMD structure under random excitation.This work provides a reference for the optimal design of TMD building structures.%TMD是高层建筑结构抗震和抗风等减震控制的主要方法,结构体系频率和TMD参数的适配性对控制效果起决定性作用.现有规范中忽略土对上部结的构的影响,使得TMD-结构振动控制与实际工程情况存在脱节.本文以结构的最大层间位移为控制指标,将优化算法与概率密度理论方法结合,以十层混凝土框架TMD-结构参数优化为例,研究了SSI对TMD结构控制效果的影响,并实现了随机激励下TMD建筑结构参数的优化设计.为TMD建筑结构最优化设计提供了新的思路和方法.