基于粘滞阻尼器加固的RC框架结构的抗震性能研究

Study on Seismic Behavior of RC Frame Structures Reinforced by Viscous Dampers

本文建立了5层RC框架结构模型,选取5条典型地震波和2条人工波,对其进行抗震性能分析,随后分别对2层、4层增设了粘滞阻尼器和1层、3层、5层增设粘滞性阻尼器的RC框架结构在同样地震记录下进行抗震性能分析,比较他们之间的加速度响应、层间位移、最大层位移以及结构的损伤发展过程。分析表明:5层RC框架结构配置了粘滞阻尼器后,地震加速度响应、层间位移以及各层最大位移都明显减小,粘滞阻尼器达到有效地减震效果。对于多层RC框架结构,阻尼器应当避免从底层配置才能达到最优的控震效果。

In this paper, a 5-story RC frame structure model is established, and five typical ground motion and two artificial ground mo- tion are selected to analyze the seismic performance of RC frame structure. Then, the viscous dampers are installed in floors of RC frame structure. It is analyzed under the same ground motion, and the acceleration response, the inter - layer displacement, the maxi- mum displacement and the damage development process are compared. The results show that the 5 - story RC frame structure After in- stalled the viscous dampers, the seismic acceleration response, the inter - layer displacement, and the maximum displacement of the layers are significantly reduced. The viscous dampers achieve effective damping effect. So far the multi - layer RC frame structure is concerned, the damper should avoid to be installed in the first floor, so that optimal control effect can be achieved. This conclusion can provide reference for the practical application and design of viscous dampers in actual RC frame structure.