摘要
为检验利用填充墙作为质量块的填充墙MTMD减震结构的实际地震反应控制效果,结合MTMD系统优化设计理论,设计了主子结构不同质量比和频率比的填充墙MTMD减震结构,以及无TMD的普通抗震框架结构,进行了锤击模态试验和不同地震输入水平下的振动台对比试验.模态分析表明,减震结构各阶周期更长,振动特性主要由第一阶平动效应控制,对第一振型的控制效果更好.振动台试验结果表明,减震结构在中大震阶段具有显著的减震效果,加速度峰值减震率在30 ～ 60％之间,位移峰值减震率在40～60％之间.质量比越大,频率比越接近1的减震结构,地震反应控制效果越好,且其减震能力优势更多体现在大震阶段.
In order to test the actual seismic response control effect of infilled wall MTMD vibration absorption structures,based on the optimal design theory of a MTMD system,infilled wall MTMD vibration-reduction structure models with different mass ratios and frequency ratios of main structure to substructure and ordinary anti-vibration frame models without TMD were designed for hammering tests and shaking table tests.The modal analysis indicated that each modal period of the vibration absorption structures with infilled wall MTMD is longer than that of the frames without TMD ; the vibration response is mainly controlled by the first horizontal vibration mode,and the response control effect of infilled wall MTMD on the first vibration mode is better.The shaking table test results showed that the remarkable vibration absorption effect of the structures with infilled wall MTMD can be acquired under moderate and major earthquakes,the peak damping rate of acceleration reaches 30％ ～ 60％,the peak damping rate of displacement reaches 40％ ～ 60％,with larger mass ratios and close to 1 of frequency ratios,the vibration absorption structures can get a better seismic response control effect,especially,in a major earthquake stage.
出处
《振动与冲击》
EI
CSCD
北大核心
2014年第11期200-207,共8页
Journal of Vibration and Shock
基金
国家自然科学基金项目(50868011)
石河子大学优秀青年科技人才培育计划项目(2012ZRKXYQ17)
关键词
填充墙
MTMD
钢框架
振动台试验
峰值减震率
infilled wall
MTMD （multiple tuned mass dampers）
steel frame
shaking table test
peak damping rate
