软钢阻尼器在钢框架中减震效果分析  

EARTHQUAKE MITIGATION EFFECT ANALYSIS OF HYSTERETIC DAMPERS IN STEEL FRAME

作　　者：朱春福[1] 李玉顺[1] 刘瑞[1] 魏艳红[1] 

机构地区：[1]东北林业大学土木工程学院,哈尔滨150040

出　　处：《低温建筑技术》2005年第6期59-60,共2页Low Temperature Architecture Technology

基　　金：中国博士后科学基金资助项目(2005037186);黑龙江省自然科学基金项目(E2003019)

摘　　要：本文通过对未安装阻尼器的纯框架结构和自下而上逐层增设阻尼器的结构进行非线性地震反应分析,考察软钢阻尼器在钢框架结构中的减震效果。计算结果表明,在结构中安装阻尼器具有一定的减震效果,其减震效果大体上随着自下而上增设阻尼器层数的增多而加强,即各层均设有阻尼器时的减震效果最佳。同时也发现,仅在1至5层安装有阻尼器的结构与各层均设有阻尼器的结构相比其减震效果有所减弱,但地震反应没有明显的增大,且各层地震反应比较均匀,也能够获得较为理想的减震效果。This paper studies the mitigation effect of hysteretic dampers in steel frames by nonlinear seismic response analyses of a frame without hysteretic dampers and another with hysteretic dampers increased by stories from bottom to top. The result indicates that the mitigation effect can be obtained in a certain extent, which is reinforced by hysteretic dampers increased by stories from bottom to top, that is to say the mitigation effect is best when dampers are attached in each story. Meanwhile, when the dampers are attached from the first to the fifth story, though the mitigation effect is not better than that when dampers are attached in each story, seismic response doesn＇t increase obviously, and the results of the seismic response among stories are relatively uniform, so the anticipated mitigation effect can be obtained.

关 键 词：软钢阻尼器 减震效果 地震反应分析 

分 类 号：TU391[建筑科学—结构工程]