連體連接方式對高層連體結構地震響應的影響
張丁喜，李春鋒
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(河西學院機電工程系，張掖 734000)［摘要］針對一非對稱雙塔連體結構，變換連接體與主體結構的連接方式，并建立了動力分析模型和三種連接工況下連體結構的振動方程，分析了結構動力特性隨連接方式的變化規(guī)律，分析結果表明：自振周期隨連接的減弱及振型的增加而逐漸變大。對該結構體系沿連體設置方向輸入El Centro1940地震波，采用動力時程分析方法分析連體結構的抗震性能，研究結果表明：連體結構中采用合理的模型并引入耗能裝置可以大大減小結構在地震作用下的動力響應，提高連體結構的抗震性能。［關鍵詞］高層結構；連接方式；計算模型；振動方程；動力特性；地震響應Influence of connection style on seismic response of the connected high-buildingZhang Dingxi, Li Chunfeng (Department of Mechanical and Electrical Engineering, Hexi University, Zhangye 734000, China)Abstract:Aimed to a unsymmetrical connected double-tower structure, the connected style of the main structure and the connection was transformed, the corresponding dynamic analysis model and the twin towers connected structure vibration equation with three linking conditions were constructed, and the change laws of dynamic performance were analyzed while the connection style was changed. The results indicated that, natural vibration period become gradually bigger as the vibration mode gradually increased and the connection weakened. Along the connected-building direction, the El Centro1940 seismic wave was put in the structure, and dynamic analysis method was used to analyze the structural seismic behavior. The research results showed that the reasonable piece of the model and the energy-consuming devices could greatly reduce the dynamic response under the earthquake, and improve the seismic performance of the unsymmetrical connected double-tower structure.Keywords:high-building; connection style; calculation model; vibration equation; dynamic performance; seismic response作者簡介：張丁喜，本科，講師，Email：zhangdx@hxu.edu.cn。參考文獻［1］黃坤耀，孫柄楠，樓文娟.連體剛度對雙塔連體高層建筑地震相應的影響［J］建筑結構學報，2001，22（3）:21-26.［2］劉晶波，李征宇，石萌，等.大跨高層連接體建筑結構動力分析［J］.建筑結構學報，2004，25（1）:45-52.［3］陳文兵，唐家祥.水平任意向地震輸入下雙塔樓連體結構的動力分析［J］.振動與沖擊，2003，22(1):29-32.［4］黃坤耀，孫炳楠，樓文娟，等.非對稱雙塔連體結構動力特性和地震相應分析［J］.工業(yè)建筑，2001，31（8）:20-24.［5］BHASKARARAO A V, JANGID R S. Seismic analysis of structures connected with friction dampers［J］. Engineering Structures, 2006，28(5)：690-703.［6］XU Y L, HE Q, KO J M. Dynamic response of damper-connected adjacent buildings under earthquake excitation［J］. Engineering Structures，1999，21(2)：135-148.［7］JINKOO KIMA, JINGOOK RYUA, LAN CHUNG.Seismic performance of structures connected by viscoelastic dampers［J］. Engineering Structures, 2006，28(2)：183-195.［8］王靈,呂西林.雙塔樓弱連接連體高層建筑結構抗震性能研究［J］.四川建筑科學研究,1999(3):48-51.［9］卞朝東，李愛群，婁宇，等.高層連體結構振型及其參與系數(shù)的分析［J］.建筑科學，2002，18（4）:20-24.
