隔震层位置变化对非规则大底盘框架结构的抗震影响分析

发布时间：2018-05-12 17:00

本文选题：基础隔震 + 层间隔震　；参考：《安徽建筑大学》2016年硕士论文

【摘要】：近几年的工程实践中,隔震系统中的基础隔震技术的研究与运用已得到较大的发展推广。但随着现代建筑样式复杂性以及隔震层位置布置存在局限性,限制了基础隔震技术的使用范围。层间隔震技术作为一门新型隔震技术,立足于基础隔震技术上被提出,层间隔震技术作为弥补基础隔震技术上的局限性、延伸性,拓宽了隔震技术的应用范围。层间隔震技术的减震效果随隔震层布置和结构形式的不同而改变,因此本文对此进行有限的研究。本论文针对隔震装置布置的位置变化对非规则结构模型地震反应影响的研究分析。首先简述隔震结构装置的力学性能以及计算模型的建立,进行隔震结构体系的动力反应分析,分别从理论上研究基础隔震的工作原理和层间隔震的工作原理,建立相应的力学模型,推导对应的微分方程式;然后利用SAP2000有限元分析软件对框架结构进行五种结构建立数值模型,在通过工程算例模拟得出上述五种结构模型的楼层加速度、层间位移以及层间剪力这几种指标进行比较分析,比较研究各结构在地震波下的减震效果,对五种结构模型分析数据总结比较,给出规律并补充研究存在的不足等。研究表明,相对于传统抗震结构,其他四种隔震结构模型均有减震效果,隔震装置能够吸收地震产生的能量和阻隔地震力向上传递,从而满足抗震减震效果。在四种隔震结构模型中,隔震支座布置的位置越低,隔震减震效果越好,所以基础隔震呈现最佳减震效果。
[Abstract]:In the engineering practice in recent years, the research and application of the base isolation technology in the isolation system has been greatly developed and popularized. However, with the complexity of modern building style and the limitation of isolation layer location, the application scope of base isolation technology is limited. As a new isolation technology, the layer isolation technology is based on the foundation isolation technology, and the interstory isolation technology is used to make up for the limitation of the foundation isolation technology. It extends and widens the application range of the isolation technology. The damping effect of the interstory isolation technique varies with the layout of the isolation layer and the structural form, so this paper makes a limited study on it. In this paper, the influence of the location of isolation device on the seismic response of irregular structure model is studied and analyzed. Firstly, the mechanical properties of the isolation structure and the establishment of the calculation model are briefly introduced, and the dynamic response analysis of the isolated structure system is carried out. The working principle of the basic isolation system and the working principle of the interstory isolation are studied respectively theoretically. The corresponding mechanics model is established and the corresponding differential equation is deduced, then the numerical model of five kinds of structures is established by using SAP2000 finite element analysis software, and the floor acceleration of the above five structural models is obtained by the simulation of engineering examples. Several indexes of interstory displacement and interstory shear are compared and analyzed, and the seismic absorption effect of each structure under seismic wave is compared and studied. The analysis data of five kinds of structural models are summarized and compared, and the regularity is given and the shortcomings of the research are supplemented. The results show that compared with the traditional seismic structure, the other four kinds of isolation structure models have the effect of shock absorption, and the isolation device can absorb the energy generated by the earthquake and transmit the seismic force upward, so as to satisfy the effect of seismic shock absorption. In the four kinds of isolated structure models, the lower the location of the isolation support, the better the isolation effect, so the base isolation presents the best damping effect.
【学位授予单位】：安徽建筑大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU352.12

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