项目名称: 钢管混凝土框架-核心筒减震结构基于性能的抗震设计方法研究
项目编号: No.51278130
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 建筑科学
项目作者: 任凤鸣
作者单位: 广州大学
项目金额: 85万元
中文摘要: 将耗能减震构件设置于钢管混凝土框架-核心筒结构中,可以改善结构的抗震性能,达到更高的性能目标来抵御具有高度随机性的地震,但对于该减震结构基于性能的设计方法还未见相关研究。本项目以钢管混凝土框架-核心筒减震结构为研究对象,采用试验研究、数值计算和理论分析相结合的方法,提出钢管混凝土框架-核心筒减震结构的性能指标,针对不同的地震设防水准,对该减震结构的抗震性能进行评定;通过拟静力试验和数值分析制定出减震结构的抗震性能等级,并基于经济性和概率可靠度确立结构的多级抗震性能目标,从而建立起减震结构性能指标、地震设防烈度和结构性能目标的量化关系,同时通过实际工程设计和模拟地震振动台试验对其进行验证和修正,最终建立起钢管混凝土框架-核心筒减震结构基于性能的抗震设计方法。本项目的研究成果将拓宽耗能减震技术在结构工程中的应用,为钢管混凝土框架-核心筒减震结构的工程应用和相关国家标准的制定和修订提供科学依据。
中文关键词: 钢管混凝土框架;核心筒;耗能减震;性能指标;设计方法
英文摘要: The use of concrete-filled steel tubular (CFST) frame - core wall mixed structure has attracted the interest of structural engineers in recent years, and several high-rise buildings have utilized this mixed structure in China. The seismic performance of the CFST frame - core wall structure can be improved by setting the dissipation devices and achieved higher performance objectives to resist the random stronger earthquake, but the research on performance-based design method of the CFST frame - core wall structure with dissipation decives has not been reported. In this project, the method of combination of experimental study、numerical calculation and theoretical analysis has been adopted to research the CFST frame - core wall structure with dissipation decives. The performance indexes of this damping mixed structure have been proposed, whilst the different seismic fortification level has been established. The evaluation of seismic performance of the damping structure has been made, while the seismic performance gradations of the structure have been formulated by the pseudo-static test and numerical analysis, and the multi-level seismic performance objectives should be established according to economy and reliability. The quantitative relationship of the performance index、the seismic fortification intensity and th
英文关键词: CFST;core wall;energy dissipation;performance index;design method