钢结构电视塔的MTMD风振控制研究及设计

在风荷载作用下，ＭＴＭＤ（ＭｕｔｉｐｌｅＴｕｎｅｄＭａｓＤａｍｐｅｒｓ）能有效地控制结构的风振反应，本文考察了ＭＴＭＤ的基本动力特性及其主要参数变化对风振控制效果的影响。数值分析表明，ＭＴＭＤ在控制结构反应有效性和稳定性方面均好于经优化设计的ＳＴＭＤ（ＳｉｎｇｅＴｕｎｅｄＭａｓｓＤａｍｐｅｒ）。最后，以洛阳电视塔为工程背景，阐述了ＭＴＭＤ的设计方法。

Study and design of MTMD wind vibration control of TV tower structures

\ \ MTMD prove to be effective in suppressing the response of the structure under wind load. In this paper, fundamental dynamic characteristics of MTMD and the effect of variation of its important parameters are investigated. Numerical analyses show that effectiv eness and robust of MTMD in controlling dynamic response of structure are better than that of the optimized STMD. Finally, Lo Yang steel TV tower has been taken as an example for elucidating the steps of MTMD design.