黏弹性阻尼器在既有结构中优化布置方法

OPTIMAL ARRANGEMENT OF VISCOELASTIC DAMPER IN EXISTING BUILDINGS

为研究黏弹性阻尼器在既有结构的优化布置方法,以某地已建9层钢筋混凝土框架办公楼为依托,运用有限元软件SAP2000,对构建的模型进行弹塑性时程分析,对比不同的黏弹性阻尼器布置方案对既有结构层间位移角、层间剪力和顶点位移影响。结果表明黏弹性阻尼器可以很好得控制结构地震反应;相较于黏弹性阻尼器的均匀布置法,权系数法对结构加固优化效果更好。研究可为黏弹性阻尼器在既有结构抗震加固中提供更优的布置方法。

This paper studies the optimal layout method of viscoelastic dampers in seismic strengthening of existing structures.A numerical model of a nine-story reinforced concrete frame office building is established by SAP2000 to analyze the elastic-plastic time history of the construction.The effectiveness of different viscoelastic damper lay⁃out schemes on the interlayer displacement angle,interlayer shear force,and vertex displacement of existing struc⁃tures are analyzed.The results show that the viscoelastic damper well controls the seismic response of the structure.Comparing with the uniform layout method of viscoelastic dampers,the weight coefficient method has better optimiza⁃tion effect on structural reinforcement.The research provides an arrangement method for viscoelastic dampers in seismic reinforcement of existing structures.