既有建筑消能减震设计方法研究论文设计.docx

摘 要进入二十一世纪，人类在多次面临城市遭受严重地震破坏后重建工作难度大、城市代价大的社会挑战，城市的抗震韧性的到广泛的重视中国地震局已经将“韧性城乡”作为地震科学创新项目计划的四个重点项目之一北京市最新总体规划中提出了“加强城市防灾减灾能力，提高城市韧性”；上海市城市总体规划（2017-2035）中提出，要“凸出底线约束、低碳韧性路径但是真正每一座城市的建立和发展都是一个漫长的过程，在城市建筑群中不仅有新建建筑，更存在大量的老旧建筑新建建筑一般反应地震工程领域的最新发展，符合当下的抗震设计规范，具有更好的抗震性能而大量的老旧建筑往往存在巨大的抗震隐患，也是实现韧性城市的巨大挑战传统结构的抗震设计基本以实现三水准为目标，即“小震不坏、中震可修以及大震不倒”而这种设计逻辑是基于生命无价的理念，为大多数结构物抗震设计的基本方针然而在地震之后，建筑虽然未发生结构倒塌的严重破坏，但是破坏的实际情况却导致建筑物原有使用机能的中断与丧失，甚至造成建筑物的非结构元件、硬件设备与财物等破坏，这些往往比建筑结构本身的破坏造成更大的财产或机能损失在现今重视高效率的产业需求与高水准的生活环境下，结构的抗震性能及地震发生后功能性恢复已深受国人重视，再加上近年来国际发生数次重大地震灾害，结构消能减震技术的研究更是各国的重要课题。

本文基于既有建筑，从既有建筑消能减震设计的分析方法、设计方法以及基于时域分析的分析和设计和方法这四个方面进行研究：概述了几种阻尼器分类及其力学模型，并以单自由度体系为例，从反应谱及能量的角度说明消能减震结构控制地震反应的原因；综述既有建筑消能减震结构的设计方法，包括振型分解法、静力弹塑性分析法、时程分析法和能量分析法；提出一种基于时域分析法的既有建筑消能减震设计理论以及设计方法；通过对算例的计算，验证了基于时域分析法的消能减震方法可以达到预设目标；通过对工程实例的仿真分析，验证本文提出的既有建筑消能减震设计方法的可行性关键词：既有建筑；消能减震；时域分析法；附加阻尼系数；阻尼比；中震弹性ABSTRACTIn the 21st century, human beings have repeatedly faced the social challenges of reconstruction and reconstruction after severe earthquake damage, and the city’s seismic toughness has been widely valued. The China Earthquake Administration has made "Resilient Urban-Rural" one of the four key projects in the seismic science innovation project plan. Beijing’s latest master plan proposes “strengthening the capacity of urban disaster prevention and mitigation and improving the resilience of cities”. The Shanghai City Master Plan (2017-2035) proposes to "Protrude the bottom line constraints and the low-carbon toughness path." But the establishment and development of every city is really a long process. There are not only new buildings but also a lot of old buildings in the city building complex. Newly constructed buildings generally respond to the latest developments in the field of seismic engineering, comply with current seismic design specifications, and have better seismic performance. And a large number of old buildings often have huge earthquake hazards, which is also a huge challenge to achieve a resilient city.The anti-seismic design of traditional structures basically aims at achieving three levels.This design logic, based on the concept that life is priceless,is the basic guideline for the seismic design of most structures.However, after the earthquake, although the building did not suffer serious damage due to the collapse of the structure, the actual situation of the damage caused the interruption and loss of the original function of the building, and even caused the destruction of non-structural components, hardware equipment and property of the building,which result in greater damage to property or function than the destruction of the building structure itself.With the emphasis on high-efficiency industrial needs and a high standard of living environment, the seismic performance of the structure and the functional recovery after the earthquake have been deeply valued by the people. In addition to several major earthquake disasters in the world in recent years, the structure dissipates energy.The research of shock absorption technology is an important issue in various countries. Based on the existing buildings, this paper studies the four aspects of analysis methods, design methods, analysis and design and methods based on time domain analysis of energy dissipation and shock absorption design of existing buildings: The classification and mechanical models of several dampers are summarized, and the single-degree-of-freedom system is taken as an example to explain the reasons for the energy dissipation and shock absorption structure to control the seismic response from the perspective of response spectrum and energy. Summarize the design methods of existing building energy dissipation and shock absorption structures, including mode decomposition method, static elastoplastic analysis method, time history analysis method and energy analysis method; A design theory is proposed for energy dissipation and vibration reduction of existing buildings based on time domain analysis.The feasibility of the existing building energy dissipation and vibration reduction design method proposed in this paper is verified through the simulation analysis of engineering examples.KEYWORDS:Existing structures;Energy dissipation reinforcement;Time domain analysis；Additional damping coefficient；Damping ratio；Earthquake elasticity目录第一章 绪论 11.1 研究背景 11.2.1 现有评价体系 21.2.2既有建筑消能减震技术应用现状 31.2.3消能减震装置的分类和革新 41.3 本文的研究思路及主要内容 5第二章 既有建筑消能减震结构的分析方法 72.1引言 72.2黏滞阻尼器的工作原理及计算模型 72.2.1开尔文模型 82.2.2 Maxwell模型 82.3框架结构动力分析模型选取的基本理论 92.4既有消能减震结构的分析方法 102.4.1 振型分解反应谱法 102.4.2 静力弹塑性分析方法 102.4.3 时程分析法 11第三章 既有建筑消能减震结构的设计方法 173.1引言 173.2既有建筑的评估 173.3既有建筑加固流程 173.4基于能量的既有建筑消能减震设计方法 183.4.1地震输入能量的计算 193.4.2阻尼器的耗能 193.4.3阻尼器数量的确定 19第四章 既有建筑基于时域分析法的消能减震结构的研究 214.1引言 214.2结构控制系统的建立 214.3 控制系统的时域分析 234.4 结构减震设计 254.5算例分析 27第五章 既有建筑基于时域分析法的消能减震结构设计 325.1引言 325.2工程概况 325.3抗震鉴定情况 335.4 结构控制系统的建立与动力分析 41。