基于粘滞阻尼器的连续梁桥在地震响应下分析与设计

发布时间：2018-01-07 12:28

本文关键词：基于粘滞阻尼器的连续梁桥在地震响应下分析与设计　出处：《昆明理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：近年来地震、海啸、台风等特大自然灾害频繁的发生,严重的威胁了人民的财产与生命安全,给人们带来了巨大的损失与风险,更加凸显了对抗震研究分析工作的迫切性与严峻性。而桥梁作为交通枢纽环节中最重要的一部分,地震发生后希望仍然能够发挥桥梁的传输功能,因此必须保证其地震响应下的可靠性与安全性。国内外的专家和学者们越来越重视对提高桥梁结构的抗震性能的研究,其中,减隔震技术是提高结构抗震性能非常有效的一种方式,在桥梁结构中加入阻尼器等耗能减震的装置,被认为是一种新型、安全、经济、有效的减隔震方法。由于阻尼器自身的安全性能好,施工方便、造价低、对环境污染小、减震效果好等优点,被各国的专家和学者所认可,在提高结构抗震性能方面有着非常广阔的发展前景。本文首先对粘滞阻尼器的内部构造、工作原理与力学计算模型进行了介绍与推导,对桥梁结构在地震响应下的动力分析理论知识进行了简单阐述；其次以云南省内某高速公路桥梁为背景,运用大型有限元软件MIDAS CIVIL对其建立有限元模型,对其进行了非线性动力时程分析,主要完成以下工作：1、介绍了国内外桥梁减隔震方面的发展与研究现状,阐述了粘滞阻尼器的工作原理,陈述了设置有粘滞阻尼器的桥梁结构在地震响应下的计算方法。2、以某连续梁桥为工程实例背景,介绍了运用大型有限元软件MIDAS CIVIL的建模过程,并进行了自振特性计算。3、研究了粘滞阻尼器的设计方案,运用非线性动力时程分析方法对其有限元模型进行对比分析,研究粘滞阻尼器参数与安装位置对结构抗震性能的影响,并研究出最合适的设计方案。
[Abstract]:In recent years, earthquakes, tsunamis, typhoons and other natural disasters occur frequently, a serious threat to the safety of people's lives and property, has brought huge loss and risk to people, highlights the urgency and seriousness of the seismic analysis and bridge work. As an important part of the traffic hub in the link after the earthquake, the transmission function of hope will still be able to play bridge, it is necessary to ensure the reliability and safety of the response under the earthquake. The domestic and foreign experts and scholars pay more and more attention to improve the seismic performance of the bridge structure research, seismic isolation technology is a very effective way to improve the seismic performance. Device for adding energy dissipation dampers in bridge structure, is considered to be a new, safe, economic and effective method of isolation. Due to the characteristics of the good safety performance, convenient construction, Low cost, less pollution to the environment, has the advantages of good damping effect, recognized by the experts and scholars, has a very broad prospects for development in the aspect of improving the seismic performance. Firstly, the internal structure of the viscous damper, the mechanics principle and calculation model are introduced and the derivation of dynamic Bridge structure under earthquake the response analysis of the theory of knowledge are introduced; secondly to bridge in Yunnan province expressway as the background, using the finite element software MIDAS CIVIL to establish the finite element model, the nonlinear dynamic time history analysis, mainly completes the following work: 1, introduces the development and research situation at home and abroad by the bridge isolation, describes the working principle of viscous damper, the statement set calculation method of viscous dampers in bridge structure seismic response under.2, a continuous bridge engineering The application background, introduces the modeling process using the finite element software MIDAS CIVIL, and calculated the.3 vibration characteristics of viscous damper, using the method of comparative analysis of the finite element model of nonlinear dynamic time history analysis of viscous damper parameters and the installation position of the structural seismic behaviors. Research and design the most suitable solutions.

【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U442.55

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