成都天府国际机场T2航站楼多点多维地震响应分析  

Time-history analysis on the hall structure in Chengdu Tianfu International Airport T2 Terminal Building under multi-support and multi-dimension seismic excitation

作　　者：徐竞雄[1] 周定松[1] 周劲炜[1] 刘宜丰[1] XU Jingxiong;ZHOU Dingsong;ZHOU Jingwei;LIU Yifeng(China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]中国建筑西南设计研究院有限公司,成都610041

出　　处：《建筑结构》2022年第S02期459-465,共7页Building Structure

摘　　要：采用时程分析方法对成都天府国际机场T2航站楼结构进行了多点多维地震激励响应分析,根据航站楼所在场地地质资料,分析采用的地震波波速为600m/s。根据分析结果,除个别杆件外行波系数较大达到2.0外,地震行波效应对钢屋盖网架杆件的影响较小,多数杆件行波系数小于1.2;下部混凝土结构底层框架柱行波系数较显著,构件行波系数最大接近2.6,随着楼层数升高行波系数逐渐减小;从整体来看,T2D大厅行波系数呈周边大、中间小的分布规律,T2C指廊行波系数呈两端大、中间小的分布规律;由于多点输入时各构件振动步调不一致,求和各支座基底剪力时部分内力相互抵消,基底剪力多点输入计算值比一致输入小。The multi-support and multi-dimensional seismic response analysis of the structure of T2 terminal at Chengdu Tianfu International Airport was carried out by time-range analysis, and the seismic wave velocity used was 600m/s.According to the analysis results, the seismic wave effect on the steel roof grid rod piece, except for the individual rod parts, was small. The influence coefficient of the lower-level frame column wave effect was more significant and the T2D hall follows the law of large in the surrounding and small in the middle, while the T2C corridor follows the law of large in the ends and small in the middle. The base shear force under the multi-point input was less than the general input, The reason is that the vibration of structure members is not synchronized when multi-support excitation occurs, so that superposition of the total base shear tends to mutually counterbalance.

关 键 词：航站楼 多点多维 行波效应 时程分析 

分 类 号：TU311.3[建筑科学—结构工程]