砌体结构TMD减震体系非线性地震反应研究

Study on Non-linear Seismic Response of Masonry Building Structure with Tuned Mass Damper System

根据随机振动理论推导了多层剪切型结构TMD减震系统的随机地震响应,分析了参数的变化对TMD减振系统减震效果的影响,从而优化了取得最佳减震效果所需要的关键参数。以砖砌体结构为研究对象,建立了用于非线性地震反应的三线型骨架曲线及其滞回规律,编制了非线性地震反应分析程序,计算了一幢六层砌体结构减震前和采用TMD减震后的地震反应,分析结果表明,在7度多遇烈度和7度基本烈度地震动作用下减震效果良好,在7度罕遇烈度地震动作用下,TMD系统应通过加强构造措施保证抗震性能。

In this paper, the random earthquake response of multi-story of shear structures with shear tuned mass damper （TMD） is analyzed. The dynamic equation is firstly established, then, the effects of varying TMD parameters on seismic response are discussed, and the optimal parameters for reducing seismic response are obtained eventually. Seismic properties of masonry brick structure are discussed, and the framework curve and hysteretic rule of three-linearity model are proposed. A non-linear history analysis program is compiled to calculate the seismic response of a six-floor masonry brick structure with TMD system under different earthquake waves. The analysis demonstrates that the TMD system can control seismic response efficiently under intensity 7 frequently occurred earthquakes and basic 7 earthquakes, and also shows that aseismic properties of TMD system should be strengthened under intensity 7 seldom occurred earthquakes to resist non-linear seismic response.