带耗能减震层框架-核心筒结构的简化模型与减震机理研究

周云; 林绍明

doi:10.6052/j.issn.1000-4750.2014.07.0567

带耗能减震层框架-核心筒结构的简化模型与减震机理研究

周云,
林绍明

广州大学土木工程学院, 广州 510006

基金项目: 广东省自然科学基金团队项目(8351009101000001);广州市高校"羊城学者"首席科学家项目(10A026S);广州市教育系统创新学术团队项目(穗教科[2009]11 号)

详细信息

作者简介:
林绍明(1984-),男,广西北海人,博士生,从事结构减震控制研究(E-mail:linshaoming007@163.com).

通讯作者:
周云(1965-),男,云南泸西人,教授,博士,博导,主要从事结构工程抗震与减震控制研究(E-mail:zhydxs@163.com).

中图分类号: TU352.1;TU973⁺.23
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出版历程
- 收稿日期: 2014-06-30
- 修回日期: 2015-03-02
- 刊出日期: 2016-02-24

RESEARCH ON A SIMPLIFIED MODEL AND ENERGY DISSIPATION MECHANISM OF FRAME-CORE TUBE STRUCTURE WITH ENERGY-DISSIPATION STORY

School of Civil Engineering, Guangzhou University, Guangzhou 510006, China

More Information

Corresponding author:
ZHOU Yun: 10.6052/j.issn.1000-4750.2014.07.0567

摘要

摘要: 提出带耗能减震层框架-核心筒结构的简化模型,将减震层等效为抗转刚度弹簧和抗转阻尼弹簧,构造减震层上部和下部的振型函数,采用假定振型法和虚功原理,推导带耗能减震层框架-核心筒结构在地震作用下的振动控制方程。以典型带耗能减震层框架-核心筒结构为例,采用MATLAB语言编制该简化模型的振动控制方程程序,并与ETABS软件建立的有限元模型进行相互验证,研究带耗能减震层框架-核心筒结构的地震反应和减震机理。研究结果表明:提出的带耗能减震层框架-核心筒结构简化模型有效、可行;利用振动方程的显示表达式揭示了带耗能减震层框架-核心筒结构的减震机理;由复模态分析方法进一步确定了不同减震层位置时结构阻尼的变化规律,优化设计的复模态阻尼比及阻尼器的优化阻尼系数可用于该类结构的初步设计。
- 框架-核心筒结构 /
- 耗能减震层 /
- 简化模型 /
- 减震机理 /
- 复模态阻尼比
Abstract: A simplified model was developed to estimate the seismic response of frame-core tube structures with EDS(energy-dissipation story). In the simplified model, EDS was considered as stiffness spring and damping spring. In order to derive the vibration equation, Heaviside function was constructed by means of modal function and according to the assumed mode shape method and the principle of virtual work. The vibration equation of a frame-core tube structure with EDS was built in MATLAB program, and the mathematical structural model was verified through a comparison with the finite element result in ETABS program. The results show that the proposed simplified model of frame-core tube structure with EDS is valid and feasible. Then the energy dissipation mechanism of frame-core tube structure with EDS could be revealed by explicit expression of vibration equation. Structural damping ratio changing with EDS position could be determined by the complex modal analysis method. Finally, the optimization design for both the complex modal damping ratio and the damping coefficient of viscous damper could be used in the preliminary design of frame-core tube structure with EDS.
- frame-core tube structure /
- energy-dissipation story /
- simplified model /
- energy dissipation mechanism /
- complex modal damping ratio

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参考文献(13)

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