作　　者： ; ; ;

机构地区： 广州大学土木工程学院

出　　处： 《建筑结构》 2015年第1期37-42 9,共7页

摘　　要： 对设置防屈曲减震层、黏滞减震层和黏弹性减震层的框架-核心筒高层结构进行地震反应分析,研究不同构造和不同组合减震层对高层结构的减震效果,优选具有良好减震效果的减震层构造方案和组合方案。研究结果表明,设置伸臂桁架减震层对高层结构的水平位移、层间位移角和层间剪力等地震反应均具有良好的减震控制效果;基于构造简单、耗能效率高和减震效果良好的原则,在伸臂桁架减震层中设置防屈曲支撑时,宜采用对角单斜撑型和双斜撑型构造;设置黏弹性阻尼器时,宜采用双斜撑型构造;设置黏滞阻尼器时,宜采用双斜撑型和剪切连接型构造;不同减震层组合方案对结构变形的控制效果相差较小,对结构基底剪力的控制效果相差较大,其中采用黏滞减震层和黏弹性减震层进行优化组合时,对结构基底剪力的减震效果较好。 Based on seismic response analysis on frame-corewall structure with buckling restrained energy-dissipation story,viscous energy-dissipation story and viscoelastic energy-dissipation story respectively,damping control effects of energydissipation stories with different details and combinations on high-rise buildings were studied. The optimal detail and combination scheme of energy-dissipation story with best energy-dissipation effect were investigated. The results show that outriggers set in energy-dissipation story are benefit for damping control on reducing horizontal displacement,inter-story drifts and shear forces. Based on the principle of simple detail,high energy-dissipation efficiency and well damping effect,details for buckling restrained braces set in outriggers in energy-dissipation story should be single diagonal brace scheme and double brace scheme. Details for viscoelastic dampers should be double brace scheme. Details for viscous dampers should be double brace scheme and shear connection scheme. Differences of structural deformation control effects of different combinations of energy-dissipation stories are small,while differences of base shear control effects are relatively large. Combination scheme of viscous energy-dissipation story and viscoelastic energy-dissipation story performs better for control effect on structural base shear.

关 键 词： 框架 核心筒结构 减震层 防屈曲支撑 黏滞阻尼器 黏弹性阻尼器

领　　域： [建筑科学]