【作者】 龙婷；

【导师】 田洁；

【作者基本信息】 西安理工大学 ， 结构工程， 2010， 硕士

【摘要】 随着城市化进程的加快,人们对居住环境和房屋使用空间的要求也越来越高,底部大空间结构在建筑形式上可以提供灵活的布置空间,同时具有较好的经济效益,由于其在使用功能上的优越性,在临街建筑中得到了普遍采用。然而,“上刚下柔,头重脚轻”是底部大空间结构的一个较明显的弱点,本文通过对安装软钢阻尼器的底部大空间结构进行非线性地震反应分析,考察软钢阻尼器在这种结构中的减震效果,得出结论,供设计参考。本文主要对以下内容进行了研究：1.建立底部大空间结构的分析模型,采用有限元分析软件ID ARC对所建立的结构模型进行非线性地震反应分析,探讨结构整体作用的抗震性能。2.对结构模型进行动力时程分析,得出结构模型在地震作用下的水平位移、层间位移角、层间剪力、位移和加速度时程曲线及减震率,分析软钢阻尼器对结构抗震性能的影响,同时探讨阻尼器安装方案的优化配置。3.通过对结构模型进行Pushover分析,得出结构模型的四种侧向力分布曲线、层间推覆曲线、塑性铰的分布等,进一步探讨软钢阻尼器对底部大空间结构的减震影响。4.通过改进能力谱方法对结构模型进行抗震性能评估,并与动力时程分析的误差进行比较。5.研究底部大空间结构在加入软钢阻尼器后的滞回特征与损伤。更多还原

【Abstract】 With the acceleration of urbanization process, people living environment and housing space requirements are getting higher and higher, the bottom of the form of large space structures in architecture can provide a flexible arrangement of space, also has good economic benefits, because of its using the functional superiority of the street construction has been widely used. However, "Just under the soft, top-heavy" is a large space at the bottom of the structure of a more obvious weakness of this paper, through the installation of mild steel dampers in the bottom of the large space structure of non-linear seismic response analysis, examining mild steel dampers in such a structure The damping effect, draw conclusions for the design.This paper conducted a study of the following:1. To establish the bottom of the analysis model of large space structures using finite element analysis software ID ARC established structural model of the nonlinear seismic response analysis to examine the overall impact of structural seismic performance.2. For the structure model, dynamic time-history analysis, seismic structure model obtained under the action of horizontal displacement, story drift angle, interlaminar shear, displacement and acceleration time history analysis mild steel dampers on the seismic performance of impact damper installed at the same time to explore the optimal allocation of the program.3. Through the structure model Pushover analysis, four kinds of structural models obtained lateral force distribution curve, between layers thrust curve, the distribution of plastic hinges and so on, and further explore the mild steel damper on the bottom of the large space structures by shocked.4. Through improved capacity spectrum method for seismic performance evaluation structure model and with the dynamic time-history analysis of the errors were compared.5. Study the structure of the bottom of the large space by adding mild steel hysteretic damper characteristics and post-injury.更多还原