高层建筑地震能量演化及隔震耗能技术研究

发布时间：2018-02-24 02:39

本文关键词： 能量致灾演化能量链式演绎耗能减震抗震加固粘滞阻尼装置　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：新中国成立以来，由于当时科学技术水平落后、经济水平有限以及人们对于地震严重性、建筑物抗震重要性认识的不足，建筑物的抗震设计一直没有得到很好的贯彻实施。随着高层建筑的快速发展，，对于结构抗震加固新技术、新材料、新方法的研究成为我国今后建设发展与防震减灾的一项重要的工作。本文将隔震耗能加固新技术应用到现有的高层建筑抗震加固设计中，将隔震耗能新技术与抗震结构性能评估相结合，为我国建筑结构抗震加固设计提出了一个有效的解决方法。本文以灾变链式理论为理论导向，从能量链的演绎角度对地震能量在介质载体中的传播演化致灾机理进行归纳分析，研究地震能量的链式演化关系，并运用灾变链式理论建立能量转化度量分析模型，分析能量链演化过程量变与质变关系及能量链式演化的物质第一性关系；研究地震动作用下能量在介质载体中传播演化致灾模式，提出地震灾害的诱发与介质载体形态变化之间的关系；对深化认识地震作用具有一定的理论意义与价值。基于结构抗震性能优化设计方法，提出了基于静力弹塑性分析的能力谱法确定耗能减震所需的附加阻尼器的设计。通过工程实例针对钢筋混凝土框架结构进行了结构粘滞阻尼器耗能减震措施的设计，运用有限元软件Midas/Gen对高层框架结构进行设计分析，通过分析对结构的抗震性能进行评估，包括对结构的振型反应谱与结构静力弹塑性进行分析，得出了不同荷载工况下的能力谱与需求谱曲线、位移及位移角分析结果，并采用能力谱法对结构抗震性能目标进行判断，在模型中采用均匀布置模式分配粘滞阻尼系数，最后对设置阻尼前后的结构运用时程分析进行结构耗能减震效果进行对比，为现有高层建筑结构的抗震加固设计提供借鉴与参考。
[Abstract]:Since the founding of New China, due to the backward level of science and technology at that time, the limited economic level and the lack of understanding of the seriousness of the earthquake and the importance of aseismic buildings, The seismic design of buildings has not been well implemented. With the rapid development of high-rise buildings, new technologies and materials for seismic strengthening of structures, The study of the new method has become an important work in the future construction development and earthquake prevention and mitigation in our country. In this paper, the new technology of seismic energy dissipation reinforcement is applied to the seismic strengthening design of existing high-rise buildings. Combining the new technology of isolation and energy dissipation with the evaluation of seismic structure performance, an effective solution is proposed for the seismic strengthening design of building structures in China. In this paper, based on the catastrophe chain theory, the mechanism of earthquake energy propagation and evolution in medium carrier is summarized and analyzed from the angle of energy chain deduction, and the chain evolution relationship of seismic energy is studied. The energy transformation metric analysis model is established by using catastrophe chain theory to analyze the relationship between the quantitative change and the qualitative change of the energy chain evolution and the material primary relationship of the energy chain evolution. This paper studies the model of energy propagation and evolution in medium carrier under the action of ground motion, and puts forward the relationship between earthquake disaster induction and medium carrier shape change, which has certain theoretical significance and value in deepening the understanding of earthquake action. Based on the optimum design method of seismic performance of structures, The design of additional dampers for energy dissipation is proposed based on the capacity spectrum method of static elastic-plastic analysis. The design of energy dissipation measures for reinforced concrete frame structures with viscous dampers is carried out through an engineering example. The finite element software Midas/Gen is used to design and analyze the high-rise frame structure, and the seismic performance of the structure is evaluated, including the vibration response spectrum of the structure and the static elastic-plastic analysis of the structure. The analysis results of capacity spectrum and demand spectrum curve, displacement and displacement angle under different load conditions are obtained. The seismic performance target of the structure is judged by capacity spectrum method, and the viscous damping coefficient is distributed in the model with uniform layout mode. Finally, the effects of energy dissipation and seismic absorption of structures before and after damping are compared, which provides reference and reference for the seismic reinforcement design of existing high-rise building structures.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU973.31

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