子结构隔震的巨型框架结构地震反应分析与振动台试验研究

发布时间：2018-07-06 16:52

本文选题：巨型框架结构 + 隔震子结构　；参考：《建筑结构学报》2017年05期

【摘要】：为考察基于子结构隔震的巨型框架结构的实际振动控制效果,对一巨型框架结构和采用子结构隔震的巨型框架结构进行数值分析和振动台试验。介绍了巨型框架结构原型,采用有限元方法对巨型框架结构和采用子结构隔震的巨型框架结构进行分析,研究子结构隔震技术对外部主框架和内部子框架的地震反应控制效果。介绍了缩尺模型结构及其试验方案,对其进行了模拟地震的振动台试验,测量和分析了主框架和子框架的地震反应。有限元分析和振动台试验结果表明:子框架隔震后,巨型框架结构的基本周期得到延长,但隔震结构前6阶振型的振动都是以子框架振动为主,而非隔震结构前6阶振型的振动都是以主框架的振动为主。子框架隔震后,主框架和子框架的地震反应都显著减小,位置较低的子框架2的地震反应及其隔震效果一般要比上部子框架3的大。隔震子框架的变形主要集中在隔震层上,但隔震层变形小于主、子框架间的隔震缝宽度。
[Abstract]:In order to investigate the actual vibration control effect of mega-frame structure based on substructure isolation, numerical analysis and shaking table test were carried out for a mega-frame structure and a mega-frame structure with substructure isolation. This paper introduces the prototype of mega-frame structure, analyzes the mega-frame structure and mega-frame structure with substructure isolation by finite element method, and studies the seismic response control effect of substructure isolation technology to external main frame and internal sub-frame. This paper introduces the structure of scale model and its test scheme, carries out shaking table test of simulating earthquake, and measures and analyzes the seismic response of main frame and sub-frame. The results of finite element analysis and shaking table test show that the basic period of mega-frame structures is prolonged after isolation of subframes, but the first six vibration modes of isolated structures are dominated by sub-frame vibration. The vibration of the first six modes of the non-isolated structure is dominated by the vibration of the main frame. After isolation, the seismic response of the main frame and the sub-frame is significantly reduced, and the seismic response and isolation effect of the sub-frame 2 with lower position is generally greater than that of the upper sub-frame 3. The deformation of the isolation frame is mainly concentrated on the isolation layer, but the deformation of the isolation layer is smaller than that of the main frame, and the width of the isolation joint between the sub-frames.
【作者单位】：福州大学土木工程学院;福建工程学院生态环境与城市建设学院;
【基金】：国家自然科学基金项目(51578160) 福建省教育厅科技项目(JA15050) 福建省高校杰出青年科研人才计划(810104)
【分类号】：TU311.3

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