文档介绍：南京航空航天大学
硕士学位论文
巨型框筒悬挂结构的动力特性及减震控制
姓名:吴盈
申请学位级别:硕士
专业:结构工程
指导教师:黄东升
20080301
南京航空航天大学硕士学位论文
摘要
巨型框筒悬挂结构是一种新型的结构体系,能充分利用高强材料的物理性
能,带来建筑室内和底部大空间,解决建筑功能与结构构造之间的矛盾,实现建
筑物的坚固、使用和艺术美三方面的统一,并产生良好的社会及经济效益。通过
对悬挂质量和悬挂层数的合理选择,在没有附加质量的情况下,可以将其设计成
类似 TMD 的减振体系。本文针对这种特性,通过理论分析,研究了巨型悬挂结
构的动力特性和减振机理,内容包括:
1. 建立了单段框筒悬挂结构的动力分析模型,对该模型进行受力分析并
推导出该体系的动力方程。分析了悬挂层数、框筒与悬挂楼层之间的
连接刚度对自由振动的影响,分析了悬挂楼层数、联接阻尼的变化对
框筒悬挂结构的动力特性的影响。
2. 建立了多段多层框筒悬挂结构的动力分析模型,在单段框筒悬挂结构
的动力方程的基础上,推导出多段多层框筒悬挂结构体系的动力方
程;分析了悬挂段数、悬挂总高度对自由振动的影响。
3. 应用三维有限元程序 ETABS,通过算例分别对巨型框筒座承式结构与
悬挂式结构进行三维有限元分析,分析结果表明巨型框筒悬挂结构具
有良好的减震性能。
关键词:巨型框筒,悬挂结构,减震,振动控制,动力分析
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巨型框筒悬挂结构的动力特性及减震控制
ABSTRACT
Mega-frame-tube suspended building that conforms to nature laws is a new kind
of structure system. The material strength can be fully used in these structures. Large
spase rooms can be realized easily by employing this structure and the contradictory
between usable function and structural construction can be well coordinated.
Suspended structure system can realize the unity of safety, suitability and beauty, so it
is of good benefit to the society and reasonable choice of suspended
mass and number of story, the vibration reduction structure similar to TMD can be
designed without additional mass. This paper presents the research on the dynamic
behavior and vibration reduction mechanism of mega-frame-tube supended structure
by theoretical contents of them are mentioned as follows:
1. The dynamical analysis model of mega-frame-tube suspended structure in one
section hanger is established. Dynamic equation is derived by Newton’s Seconed
effect of the suspended floors, rigidity between frame-tube and suspended
floors on structure free vibration is analyzed. The effect of the suspended floors,
damping between frame-tube and suspended floors on dynamical characteristic is
analyzed.
2. The dynamical analys