【作者】 王洁；

【导师】 白羽；

【作者基本信息】 昆明理工大学 ， 防灾减灾工程及防护工程， 2015， 硕士

【摘要】 消能减震技术作为一种新型的抗震技术,目前已在既有建筑的加固维修和新建筑的抗震控制中得到推广应用。虽然消能减震技术已相对成熟,但是仍然存在一些问题需要继续研究,在工程应用中发现粘滞阻尼器提供的附加有效阻尼比随地震加速度的不同而变化。本文基于此问题来研究框架结构在不同地震地面加速度峰值作用下非线性粘滞阻尼器附加有效阻尼比的变化规律。(1)本文首先介绍了消能减震技术的发展历程及附加有效阻尼比的国内外研究现状,并对减震结构和粘滞阻尼器的相关理论进行比较详细的归纳总结。(2)对应用SAP2000的减震分析及附加有效阻尼比的计算进行了梳理,并归纳了分析流程。(3)由于附加有效阻尼比的变化与地震力存在耦合,故没办法准确推出两者的关系,因此拟定结构在不同阻尼器数量情况下,考虑变化地震动作用,以分析附加有效阻尼比的变化规律。(4)对相同结构形式的钢筋混凝土结构、钢框架结构,在同样满足抗震设计要求,且布置相同数量的阻尼器,分析附加有效阻尼比的变化。以期对设计中结构附加有效阻尼比的合理估算起到借鉴作用。更多还原

【Abstract】 Energy dissipation technology, as a new type of seismic technology, is currently widely used in the existing seismic reinforcement building and seismic control of new buildings. Although the energy dissipation technology has been relatively mature, there are still some problems to continue to study, and it finds that the additional effective damping ratio provided by the viscous damper changing with seismic acceleration in engineering application.Based on the problem, the paper research the changes of additional effective damping ratio for nonlinear viscous damper, frame structure, under different seismic peak ground acceleration.(1)This paper firstly introduces the development process of dissipation energy dissipation technology and the research status at home and abroad of the additional effective damping ratio, and the related theory of dissipation structure and viscous damper are introduced in detail.(2)The application of SAP2000 seismic analysis and calculation of the additional effective damping ratio are summarized, then it sums up the analysis process.(3)Because of the coupling between the change of the additional effective damping ratio and seismic force, it can’t get the accurately relationship. Considering the variation of the seismic ground motion, it uses the different numbers of damper for the structure to analyze the methods of the additional effective damping ratio.(4) Forming the same structure of reinforced concrete structure and steel frame structure, meeting the seismic design requirements, and arranging the same quantity dampers, it analyzes the changes of the additional effective damping ratio. It can play the role to estimate a reasonable of additional effective damping ratio in design.更多还原