隔震支座在连体高层结构上的减振应用研究

连体高层结构的地震响应复杂并难以预测。为了提高这类结构的抗震安全性,以某实际工程为结构原型进行研究,通过控制效果的比较分析隔震技术在连体高层结构上的适用性。首先研究了在ANSYS软件中隔震支座的合理建模,采用若干Combine单元串联来反应隔震支座的动力特性,进而将隔震支座应用于主体结构,在地震激励下对比了结构位移、加速度响应,以及关键部位构件的内力响应。仿真结果验证了隔震支座在连体高层结构上应用的有效减振效果,同时计算也发现过大或过小的水平刚度都将影响隔震支座的控制效果。建模方法及计算结果都可为今后隔震技术在该类结构上的应用提供初步的理论依据。

The Analysis of the Application of Base Isolation Technique on Connected High-rise Structure

Along with the rapid growth of economy, more and more complex high-rise buildings such as connected structures were constructed.It has been hard to predict the seismic performance of this kind of structure precisely.In order to enhance their ability against earthquake, this paper analyzes the possibility of using base isolation technique in such structure.Firstly, the realization of isolation element is analyzed in ANSYS by combination of several Combine elements.Then base isolation technique is applied to the connected high-rise structure and the control effectiveness is validated by analyzing the displacement, acceleration responses, as well as the internal force of some key elements.The simulation results verify the control effectiveness of the application of base isolation technique, and it is also found that too large or too small of the lateral stiffness will result in poor performance of the controller.The modeling method, as well as the simulation results can provide theoretical foundation for the application of base isolation technique in such kinds of structure.