粘滞阻尼器和防屈曲支撑的应用及经济性分析

发布时间：2018-01-04 01:01

本文关键词：粘滞阻尼器和防屈曲支撑的应用及经济性分析　出处：《昆明理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：传统结构抗震通过增强结构本身的抗震性能(强度、刚度、延性)来抵御地震作用,即由结构本身储存和消耗地震能量,这是被动消极的抗震对策。目前国内外推荐的一些消能减震设计方法各有可取之处,但是这些方法均是重理论,轻实践；而且我国规范对减震结构的设计只是提出了原则性和框架性的规定,不易操作实现。因而对实际工程的指导意义受到一定限制,对于一般工程师,更是难以入手操作消能减震结构的设计,对不同减震体系的应用及工程技术经济性对比更是不足。考虑到以上各方面因素,结合实际工程,提出针对同一工程采用粘滞流体阻尼器及防屈曲支撑两种不同减震体系的设计方法并对其工程经济性进行对比分析显得十分必要,同时也可以给结构设计人员提供一个参考的依据。本文对云南省昆明理工大学新迎校区本科教学实训中心大楼的设计进行分析,并采用了两种不同的减震体系进行设计分析,经过深入的对比研究,使结构满足抗震性能设计目标的要求。研究内容如下：1、讲述了该课题研究的背景、来源、目的及意义,同时对不同减震体系的应用现状进行了分析和总结,并重点介绍了粘滞流体阻尼器及防屈曲约束支撑的基本概况。2、以昆明理工大学新迎校区本科教学实训中心大楼二单元为工程背景,介绍了混凝土结构设计的主要内容,对不同结构类型进行了分析比较,并对该本科实训中心大楼做了基本介绍,包括工程的基本情况、建筑结构安全等级及设计使用年限、自然条件、本工程设计遵循的标准、规范、规程、设计采用的均布活荷载标准值、结构主要材料等。3、介绍了此工程中粘滞流体阻尼器的设计及计算分析。包括：(1)确定工程所采用的消能器类型、阻尼系数、阻尼指数、最大出力、最大速度、最大行程、滞回稳定性等性能指标；(2)介绍粘滞流体阻尼器在此工程中的设计方法；(3)用PKPM软件建模,并对抗震承载力进行验算；(4)对计算结果进行分析,做出评价。4、介绍了此工程中耗能型屈曲约束支撑的设计及计算分析。包括：(1)不同类型屈曲约束支撑的特性及应用范围的基本介绍；(2)耗能型屈曲约束支撑的设计；(3)用PKPM软件建模,并对抗震承载力进行验算；(4)对相应的计算结果进行综合分析,做出全面的评价。5、对比粘滞流体阻尼器及防屈曲支撑这两种不同的减震体系应用在同一新建建筑中带来的不同影响。从设计及施工两个方面进行对比分析,对结果做出评价。6、对粘滞流体阻尼器及防屈曲支撑这两种不同的减震体系在本工程中所带来的工程经济性进行综合评价,解决目前最受关注的安全及经济性问题,为以后相关设计提供部分依据。
[Abstract]:Traditional structures resist seismic action by enhancing their seismic performance (strength, stiffness, ductility), that is, storing and consuming seismic energy by the structure itself. This is a passive and passive anti-seismic countermeasure. At present, some design methods of energy dissipation and seismic absorption recommended at home and abroad have their own merits, but these methods are all theoretical and light to practice. Moreover, the design of seismic absorption structure in our code only puts forward the rules of principle and frame, which is not easy to operate. Therefore, the guiding significance of practical engineering is limited to general engineers. It is difficult to operate the design of energy dissipation structure, and the application of different damping system and the comparison of engineering technology and economy are even more insufficient. Considering the above factors, combined with the actual engineering. It is necessary to put forward two design methods for the same project using viscous fluid damper and buckle-proof bracing, and compare and analyze the engineering economy of the two systems. At the same time, it can also provide a reference for the structural designers. This paper analyzes the design of the undergraduate teaching training center building in the new campus of Kunming University of Technology, Yunnan Province. Two different damping systems are used for design and analysis. Through in-depth comparative study, the structure can meet the requirements of seismic performance design. The research contents are as follows: 1, the background of the research is described. At the same time, the application status of different damping systems is analyzed and summarized, and the basic overview of viscous fluid dampers and buckle-restrained braces is introduced in detail. This paper introduces the main contents of concrete structure design and analyzes and compares the different structure types with the engineering background of two units of the building of the undergraduate teaching practice training center in the new campus of Kunming University of Technology. At the same time, the author introduces the building of the undergraduate training center, including the basic situation of the project, the safety grade of the building structure and the design life, the natural condition, the standard, the specification and the regulation of the project design. This paper introduces the design and calculation of viscous fluid damper in this project, including the determination of the type of energy dissipator used in the project. Damping coefficient, damping index, maximum output force, maximum velocity, maximum stroke, hysteretic stability and other performance indicators; The design method of viscous fluid damper in this project is introduced. (3) using PKPM software to model and check the seismic bearing capacity; (4) Analysis and evaluation of the calculation results. This paper introduces the design and calculation analysis of energy-dissipation buckling restrained braces in this project, including the basic introduction of the characteristics and application scope of different types of buckling restrained braces. (2) the design of energy-dissipation buckling restrained braces; (3) using PKPM software to model and check the seismic bearing capacity; 4) Comprehensive analysis of the corresponding calculation results and a comprehensive evaluation of .5. Comparing the effects of viscous fluid dampers and buckle-proof braces in the same new building, this paper makes a comparative analysis on the design and construction, and evaluates the results. 6. In order to solve the most concerned safety and economic problems, the engineering economy of the two different damping systems, viscous fluid dampers and buckle-proof braces, are comprehensively evaluated in this project. To provide some basis for the related design in the future.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU352.1

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