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王列德， 袁偉斌
（浙江工業(yè)大學(xué)建筑工程學(xué)院，杭州 310014）[摘要] 為研究連體與塔樓的連接方式對三塔樓連體高層建筑結(jié)構(gòu)動力性能的影響機理，并更好地解決實際工程中遇到的問題，利用模態(tài)分析研究三塔樓連體高層結(jié)構(gòu)的自身動力特性；利用時程分析法，輸入兩條典型地震波和一條人工地震波，計算不同的連體結(jié)構(gòu)模型的地震響應(yīng)，總結(jié)分析連接方式對塔樓動力性能的影響規(guī)律。結(jié)果表明，連體抗側(cè)移剛度不變，連體與塔樓的連接方式從剛接到鉸接變化時，結(jié)構(gòu)的自振周期隨之減小；地震作用下，與剛接時相比，采用鉸接后單連體結(jié)構(gòu)連體位置以下樓層位移減小，連體以上樓層位移增大，但其變化不顯著；隨著連體數(shù)量增加，連接方式對三塔樓連體高層建筑抗震性能的影響增大。
[關(guān)鍵詞] 連體結(jié)構(gòu)；動力特性；鉸接；頻率；位移；加速度
中圖分類號：TU355 文獻標識碼：A 文章編號：1002-848X(2012) Sl-0332-04Influence of connection mode on dynamic performance of three-towers-connected tall building
Wang Liede, Yuan Weibin
( College of Civil Engineering and Arclutecture, Zhejiang University of Technology, Hangzhou 310014, China)Abstract: In order to investigate the influence mechanism of connection mode on dynamic behaviors of multi-towers-connected lugh-rise building and get a better solution of the difficulties encountered in similar practical engineering, modal analysis was performed to get the dynamic characteristics. Time lustory analysis method was used through inputUng two typical seismic waves and an artificial seismic wave, to calculate the seismic response of different model, and summarize the influence rules of connection mode on the dynanuc performance of three-towers-connected lugh-rise buildings. The results show that when the lateral stiffness of connection is constant and the connection mode between towers and connection changes from rigid to hinge, the vibration period of the structure decreases. Under earthquake, compared with the rigid when the connection mode of the structure with one connection is hinge, the level displacement is decreasing under the connection and increasing up it,but the differences are not obvious. The influence of connection mode on dynamic performance increases with the addition of connection number.
Keywords: connected structure; dynamic behavior; hinge; frequency; displacement; acceleration
