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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。
Due to the lack of records of long-period earthquakes, the research on the characteristics of long-period earthquakes at home and abroad is not yet mature, and there are few researches on the elasto-plastic dynamic response of tall buildings under long-period seismic waves. In this paper, long-period TOM (EW) waves are selected as input from the 2003 Tokushu earthquake in Hokkaido, Japan. Based on a 30-story RC frame-core structure, the Hilbert-Hughes-Taylor recursion scheme The elasto-plastic time-history analysis of high-rise structures under the action of long-period seismic waves is compared with the results of high-rise structures under normal El Centro waves. Through the comparative analysis of displacement response, acceleration response and stress distribution, the elastic-plastic response characteristics of high-rise buildings under long-period seismic waves are discussed, and the results of engineering reference value are obtained.