调谐质量阻尼器对某高层建筑的减振效果分析
发布时间：2018-10-26 10:30
【摘要】：调谐质量阻尼器(Tuned Mass Damper, TMD)是时下应用范围最广泛的被动减振系统之一。由于调谐质量系统减振效果明显且占用空间少、便于施工安装维护等优势,在高层、高耸结构及桥梁的减振、抗风工程中有着广阔的发展前景。 调谐质量阻尼器是一种附加在结构上的减振子结构,由弹簧、阻尼器和质量块组成,质块一般通过弹簧和阻尼器支撑或者悬挂在主结构上。当结构在受到外部荷载作用下产生振动时,子结构通过连接装置与结构一起振动,由此产生的能量会通过惯性力反作用于主结构,以及部分被阻尼器所消耗,实现减振的目的。 本文采用某十二层框架结构为背景,使用Sap2000有限元分析软件建立结构模型。首先通过模态分析,得出前十二阶振型、振型周期、频率等动力特性,随后进行时程分析,得出主结构在无减振装置下,受到三组地震波激励的响应情况,计算出结构各层最大位移。建立调谐质量阻尼器的理论计算模型,分析研究子结构的减振原理,推导出位移理论计算公式,对其中使主结构位移产生影响的重要参数如质量比μ、阻尼比ζd进行分析并取值,选择调谐质量阻尼系统在软件中合适的模拟方法进行模拟,对不同参数如质量比、阻尼比在合理的取值范围中分别取值比较,最终通过较小位移比的数据证明其减振效果。 研究结果表明,选择合理的参数,尤其是阻尼比,可以有效减小水平地震作用对主结构的位移影响。本文使用水箱作为调谐质块,既减少了额外添加质块对结构的负荷,也可以通过调整注水量灵活调整的质量参数,以达到最佳减振效果。
[Abstract]:Tuned mass damper (Tuned Mass Damper, TMD) is one of the most widely used passive damping systems. Because the tuned mass system has the advantages of obvious damping effect and less space, it is convenient for construction, installation and maintenance, so it has a broad development prospect in the high-rise, towering structures and bridges, as well as in the wind-resistant engineering. Tuned mass damper (TMD) is a kind of vibration absorber attached to the structure, which consists of spring, damper and mass block. The mass block is generally supported by spring and damper or suspended on the main structure. When the structure vibrates under external load, the substructure vibrates with the structure through the connection device. The resulting energy will react to the main structure through the inertia force and partly be consumed by the damper to achieve the purpose of vibration reduction. In this paper, a 12-story frame structure is used as the background, and Sap2000 finite element analysis software is used to establish the structural model. First, the dynamic characteristics of the first twelve modes, the period and the frequency are obtained by modal analysis, and then the response of the main structure to three groups of seismic waves without vibration absorber is obtained by time history analysis. The maximum displacement of each floor of the structure is calculated. The theoretical calculation model of tuned mass damper is established, the vibration absorption principle of substructure is analyzed and the formula of displacement theory is deduced. The important parameters such as mass ratio 渭, which affect the displacement of the main structure, are derived. The damping ratio 味 d is analyzed and evaluated. The suitable simulation method of tuned mass damping system is chosen to simulate the damping system. The different parameters such as mass ratio and damping ratio are compared in a reasonable range. Finally, the effect of vibration reduction is proved by the data of small displacement ratio. The results show that choosing reasonable parameters, especially damping ratio, can effectively reduce the effect of horizontal earthquake on the displacement of the main structure. In this paper, the water tank is used as the tuned mass block, which not only reduces the load of the additional mass block to the structure, but also adjusts the quality parameters flexibly by adjusting the injection quantity, so as to achieve the best vibration absorption effect.
【学位授予单位】：内蒙古工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.31
[Abstract]:Tuned mass damper (Tuned Mass Damper, TMD) is one of the most widely used passive damping systems. Because the tuned mass system has the advantages of obvious damping effect and less space, it is convenient for construction, installation and maintenance, so it has a broad development prospect in the high-rise, towering structures and bridges, as well as in the wind-resistant engineering. Tuned mass damper (TMD) is a kind of vibration absorber attached to the structure, which consists of spring, damper and mass block. The mass block is generally supported by spring and damper or suspended on the main structure. When the structure vibrates under external load, the substructure vibrates with the structure through the connection device. The resulting energy will react to the main structure through the inertia force and partly be consumed by the damper to achieve the purpose of vibration reduction. In this paper, a 12-story frame structure is used as the background, and Sap2000 finite element analysis software is used to establish the structural model. First, the dynamic characteristics of the first twelve modes, the period and the frequency are obtained by modal analysis, and then the response of the main structure to three groups of seismic waves without vibration absorber is obtained by time history analysis. The maximum displacement of each floor of the structure is calculated. The theoretical calculation model of tuned mass damper is established, the vibration absorption principle of substructure is analyzed and the formula of displacement theory is deduced. The important parameters such as mass ratio 渭, which affect the displacement of the main structure, are derived. The damping ratio 味 d is analyzed and evaluated. The suitable simulation method of tuned mass damping system is chosen to simulate the damping system. The different parameters such as mass ratio and damping ratio are compared in a reasonable range. Finally, the effect of vibration reduction is proved by the data of small displacement ratio. The results show that choosing reasonable parameters, especially damping ratio, can effectively reduce the effect of horizontal earthquake on the displacement of the main structure. In this paper, the water tank is used as the tuned mass block, which not only reduces the load of the additional mass block to the structure, but also adjusts the quality parameters flexibly by adjusting the injection quantity, so as to achieve the best vibration absorption effect.
【学位授予单位】：内蒙古工业大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.31
【参考文献】
相关期刊论文 前7条
1 陈小川;戴烽滔;;粘弹性阻尼器对结构抗震性能的改善[J];四川建筑科学研究;2010年02期
2 涂文戈,邹银生;MTMD对建筑结构多模态控制的减震分析[J];地震工程与工程振动;2003年05期
3 陈晓桐;卜国雄;;TMD减震钢框架有限元分析[J];低温建筑技术;2009年02期
4 谭平;潘兆东;王磊;周福霖;;基于能量原理的TMD系统减震性能分析[J];桂林理工大学学报;2012年03期
5 王均刚;马汝建;赵东;林近山;;TMD振动控制结构的发展及应用[J];济南大学学报(自然科学版);2006年02期
6 郭明珠,陈厚群;场地类别划分与抗震设计反应谱的讨论[J];世界地震工程;2003年02期
7 陈永祁;耿瑞琦;马良U，
本文编号：2295425
本文链接：https://www.wllwen.com/kejilunwen/sgjslw/2295425.html
