大跨维修机库竖向地震响应的被动控制研究  

STUDY ON VERTICAL SEISMIC RESPONSE PASSIVE CONTROL OF LONG-SPAN MAINTENANCE HANGAR

作　　者：徐庆阳[1,2] 李爱群[3] 丁幼亮[3] 沈顺高[4] 胡灿阳[1] 

机构地区：[1]南京审计学院国际审计学院,江苏公共工程审计重点实验室,南京211815 [2]中国长江三峡集团公司,北京100038 [3]东南大学土木工程学院,东南大学混凝土与预应力混凝土结构教育部重点实验室,南京210096 [4]中国航空工业规划设计研究院,北京100120

出　　处：《工业建筑》2013年第11期110-116,共7页Industrial Construction

基　　金：国家自然基金面上项目(51178100);江苏省自然科学基金面上项目(BK2011693)

摘　　要：大跨维修机库屋盖竖向模态频率分布密集,竖向地震响应显著。针对机库结构,研究其屋盖竖向振动被动控制方法。结合大跨机库的动力特性,提出采用调谐质量阻尼器(TMD)系统减振方案,并针对某机库进行减震分析,从时域、频域不同角度研究屋盖节点竖向地震响应的减震效果。进一步提出大跨机库多组TMD系统减震方案,分析不同参数组合下频域内机库屋盖节点的减震效果及其分布规律。研究结果表明,地震波频谱特性对机库采用调谐质量阻尼器的减震效果具有较大的影响,应根据具体结构动力特性及场地特点来确定合理的减震方案。The vertical modal frequency of long-span hangar roof distributes densely and its vertical seismic response is very significant. Analysis of vertical seismic response control method of long-span hangar roof was carried out. Combining with the dynamic characteristics of long-span hangar, damping method by setting tuned mass damper was proposed. Corresponding calculation analysis was carried out and damping effect of the roof joint vertical seismic response was studied under time domain and frequency domain. Furthermore, multiple tuned mass damper（MTMD） was put forward for shock absorbing of long-span hangar. Damping effect of structure with MTMD of different parameters eombination was compared under frequency domain. Results show that the spectrum characteristics of earthquake waves have significant influence on the damping effect. The reasonable damping method should be determined combining with the structure dynamic characteristics and ground characteristics.

关 键 词：大跨维修机库 地震响应 被动控制 调谐质量阻尼器 

分 类 号：TU352.11[建筑科学—结构工程]