基于地震波作用的塔式停车库动态响应分析  

Dynamic response of high-rise tower parking garage under seismic wave action

作　　者：杜方鑫 刘劲松 刘晋平[2] DU Fangxin;LIU Jinsong;LIU Jinping(School of Automotive Technology and Service,Wuhan City Polytechnic,Wuhan 430064,China;School of Mechanical Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]武汉城市职业学院汽车技术与服务学院,武汉430064 [2]北京科技大学机械工程学院,北京100083

出　　处：《现代制造工程》2023年第1期70-76,共7页Modern Manufacturing Engineering

基　　金：2019年度武汉市科技计划项目(2019010701011398)。

摘　　要：为研究塔式停车库在各种地震波作用下的动态响应,采用有限元软件建立大型高层塔式停车库数值计算模型,选取不同频带特征的典型地震波数据,分析塔式停车库在不同地震波作用下的响应规律。计算结果表明,塔式停车库前10阶模态分布比较密集,模态振型具有明显的差异性,应着重考虑低频成分丰富且幅值较大的Kobe地震波影响;在基频范围能量分布集中的地震波会对整体结构振动特性产生显著影响,3种地震波作用下塔式停车库1~5层的层间相对横向位移响应最大,需要对该楼层区域的车库结构进行优化;塔式停车库地震响应具有明显的空间特征,不同结构区域的动态响应具有差异性,在工程设计上应该按照空间分布进行一体化抗震计算。研究成果对塔式停车库及该类结构的抗震设计和分析具有一定参考。To study the dynamic response of high-rise tower parking garage under seismic wave action,a numerical calculation model was established for large high-rise tower parking garage based on finite element software.By selecting typical seismic wave data with different frequency bands,the response law of tower parking garage under different seismic waves was obtained.Results show that the modal distribution of exhaust pipe was more intensive,the modal shapes of structural-mode show significant differences,it should consider the influence of Kobe seismic wave with abundant low frequency components and large amplitude value.Seismic waves with concentrated energy distribution had a significant effect on the characteristics of overall structure,the relative horizontal displacements of tower parking garage between 1st to 5th floors were the largest under 3 seismic waves′action,it is necessary to optimize the designed garage structure in floor areas.Dynamic response of tower parking garage had the characteristics of spatial autocorrelation by differences of different structural regions,the integrated seismic calculation should be carried out according to spatial distribution in engineering.This research conclusion had a guiding significance for the relevant seismic design of tower parking garage.

关 键 词：塔式停车库 地震波作用 数值分析 动态响应 

分 类 号：U468.5[机械工程—车辆工程]