连接方式对三塔楼连体高层建筑动力性能影响
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摘要
为研究连体与塔楼的连接方式对三塔楼连体高层建筑结构动力性能的影响机理,并更好地解决实际工程中遇到的问题,利用模态分析研究三塔楼连体高层结构的自身动力特性;利用时程分析法,输入两条典型地震波和一条人工地震波,计算不同的连体结构模型的地震响应,总结分析连接方式对塔楼动力性能的影响规律。结果表明,连体抗侧移刚度不变,连体与塔楼的连接方式从刚接到铰接变化时,结构的自振周期随之减小;地震作用下,与刚接时相比,采用铰接后单连体结构连体位置以下楼层位移减小,连体以上楼层位移增大,但其变化不显著;随着连体数量增加,连接方式对三塔楼连体高层建筑抗震性能的影响增大。
In order to investigate the influence mechanism of connection mode on dynamic behaviors of multi-towersconnected high-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 history analysis method was used through inputting 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 dynamic performance of three-towers-connected high-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.
In order to investigate the influence mechanism of connection mode on dynamic behaviors of multi-towersconnected high-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 history analysis method was used through inputting 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 dynamic performance of three-towers-connected high-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.
引文
[1]黄坤耀.双塔连体结构的静力、抗震和抗风分析[D].杭州:浙江大学,2001.
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[5]黄襄云,刁云云,谭平,等.多塔楼高层建筑连廊结构的柔性连接设计及试验研究[J].地震工程与工程振动,2007,27(6):112-118.
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[2]XILIN LU,LINZHI CHEN,YING ZHOU,et al.Shaking table model tests on a complex high-rise building with two towers of different height connected by trusses[J].The Structural Design of Tall and Special Buildings,2009,18(7):765-788.
[3]GIAN PAOLO CIMELLARO.Seismic response of adjacent buildings connected by nonlinear viscous dampers[C]//Proceedings of Sessions of the 2007 Structures Congress,2007.
[4]刘晶波,李征宇,石萌,等.大跨高层连接体建筑结构动力分析[J].建筑结构学报,2004,25(1):45-52.
[5]黄襄云,刁云云,谭平,等.多塔楼高层建筑连廊结构的柔性连接设计及试验研究[J].地震工程与工程振动,2007,27(6):112-118.
[6]Y L XU,Q HE,J M KO.Dynamic response of damperconnected adjacent buildings under earthquake excitation[J].Engineering Structures,1999,21(2):135-148.
[7]邱吉宝,向树红,张正平.计算结构动力学[M].合肥:中国科学技术出版社,2009.
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