长周期地震波作用下高层建筑结构的弹塑性动力响应分析
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摘要
由于长周期地震动记录的缺乏,目前国内外对长周期地震动特性的研究尚不成熟,对长周期地震波作用下高层建筑结构弹塑性动力响应的研究成果也较少。本文从2003年日本北海道十胜冲地震记录中挑选出长周期TOM(EW)波作为输入,以一30层钢筋混凝土框架-核心筒结构为背景,采用Hilber-Hughes-Taylor递推格式,进行了长周期地震波作用下的高层结构弹塑性时程响应分析,并与普通El Centro波作用下的高层结构响应结果做了比较。通过对结构位移响应、加速度响应和应力分布的比较分析,探讨了长周期地震波作用下高层建筑结构的弹塑性响应特性,获得了有工程参考价值的结果。
At present,due to the lack of long period ground motion records,the research on the characteristics of long period ground motion is not well developed,and there are not many researches about long period seismic response for high rise structures subjected to long period ground motion.The long period TOM wave was chosen from the earthquake records of Hokkaido Japan 2003 as seismic input,a thirty story RC frame core tube structure was taken as the research object,and Hilber-Hughes-Taylor recursive scheme was used to analyse the elasto-plastic seismic response of high rise structures under long period ground motion.A comparative study about the dynamic response of a high rise structure between long period TOM wave and the general El Centro wave was made.Through the comparative analysis of displacement response,acceleration response and stress distribution,the elasto-plastic response characteristic of the high rise structure was discussed,and some valuable conclusions for engineering were acquired.
At present,due to the lack of long period ground motion records,the research on the characteristics of long period ground motion is not well developed,and there are not many researches about long period seismic response for high rise structures subjected to long period ground motion.The long period TOM wave was chosen from the earthquake records of Hokkaido Japan 2003 as seismic input,a thirty story RC frame core tube structure was taken as the research object,and Hilber-Hughes-Taylor recursive scheme was used to analyse the elasto-plastic seismic response of high rise structures under long period ground motion.A comparative study about the dynamic response of a high rise structure between long period TOM wave and the general El Centro wave was made.Through the comparative analysis of displacement response,acceleration response and stress distribution,the elasto-plastic response characteristic of the high rise structure was discussed,and some valuable conclusions for engineering were acquired.
引文
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