高铁车站结构动力特性及抗震性能分析  

Analysis of Dynamic Characteristics and Seismic Performance of High-Speed Railway Station Structure

作　　者：叶永平 YE Yongping(China Railway 24th Bureau Group Fujian Railway Construction Co.Ltd.,Fuzhou Fujian 350013,China)

机构地区：[1]中铁二十四局集团福建铁路建设有限公司,福建福州350013

出　　处：《铁道建筑技术》2024年第10期188-192,共5页Railway Construction Technology

基　　金：中铁二十四局集团有限公司科技研发项目(2022-13)。

摘　　要：高铁车站结构跨度大、频谱密集且动力特性复杂,与传统结构差别较大,对其进行抗震性能分析评估至关重要。利用Midas软件对某高铁车站进行结构模态分析、反应谱抗震分析,综合评估其抗震性能。结果表明:高铁车站结构振型复杂,其中一阶、二阶振型分别为屋盖X、Y向平动主导,三阶振型为屋盖Z向扭转主导;高铁车站结构在弹性阶段时,X向和Y向最大层间位移角分别为1/1602和1/1556,约为抗震规范规定限值的1/6;结构X向和Y向剪重比在水平多遇地震工况下分别为0.061和0.052,约为抗震规范规定限值的3倍,两者均满足抗震规范要求;结构X方向和Y方向刚度相近,抗震性能由X和Y两个方向共同决定。The seismic performance analysis and assessment of high-speed railway station structures are crucial due to their extensive span,compact frequency range,and intricate dynamic characteristics,which are significantly different from traditional structures.The Midas software was used to conduct modal analysis and response spectrum seismic analysis on a certain high-speed railway station structure,comprehensively evaluating its seismic performance.The results indicate that the structure of the high-speed railway station has complex vibration modes,with the first and second modes dominated by roof displacements in the X and Y directions respectively,and the third mode dominated by roof torsion in the Z direction.During the elastic stage,the maximum inter-story drift angles in the X and Y directions are 1/1602 and 1/1556 respectively,which is approximately 1/6 of the specified limit values in the seismic design code.Furthermore,the shear weight ratios in the X and Y directions under horizontal multi-directional seismic conditions are 0.061 and 0.052 respectively,which are approximately three times the specified limit values in the seismic design code.Both ratios satisfy the requirements of the seismic design code.The stiffnesses in the X and Y directions are similar,and the seismic performance is determined by both directions.

关 键 词：高铁车站 大跨钢结构 动力特性 抗震性能 数值分析 

分 类 号：TU352.1+1[建筑科学—结构工程]