摘要
为了不额外增大结构自重,同时又能将TMD原理很好的应用于高层建筑结构地震反应控制,提出以带肋楼板的恒载和活荷载换算为子结构的质量、设置在主梁(包括次梁)和带肋楼板之间的橡胶隔震垫的抗侧刚度和阻尼代替子结构的弹簧和阻尼器的一种TMD体系。考虑该TMD的高层建筑为研究对象,建立振动微分方程,利用自编程序进行地震反应弹塑性时程分析,讨论该体系的合理性和可行性。基于定点理论的思想对TMD的设计方法进行研究。在多种地震动作用下,分别计算原结构与消能减震结构的地震反应,并对比两者的耗能情况。考虑TMD设置位置对消能结构地震反应的影响,分析该TMD在实际工程中实施的可行性和方案,最终提出简单有效的TMD设计方法-定点理论修正法。基于该方法并运用算例模型进行计算分析,结构运用该方法后具有较好的消能减震效果,故定点理论修正法是合理可靠的。
In order not to increase the weight of a structure, and make the TMD principle well applied to the structural seismic response control of tall buildings, this paper presents a TMD system. In the system, dead loads and live loads of ribbed floor were converted into the quality of substructure and lateral stiffness and damping of a rubber isolation pad set in the main beam （including beam） and ribbed slab replaced the spring and damper of the substructure. Based on the study of rise building with TMD, vibration differential equations and computer programs were established for elastic - plastic time history analysis and the rationality and feasibility of the system was discussed. A design method of TMD was studied based on the fixed point theory. The seismic responses of original structure and energy dissipation structure were calculated under a variety of earthquake actions and the energy distribution was compared. The effect of the TMD location on energy dissipation structure seismic response？ was considered and the feasibility and scheme of the TMD used in practical engineering was analyzed. Finally a simple and effective design method of TMD was presented, the theory of fixed point correction method. Based on the method, case models were used for simulations. It is proved that structure has better effect of energy dissipation based on this method and the theory of fixed point correction method is reasonable and reliable.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第16期166-175,194,共11页
Journal of Vibration and Shock
