车辆横移过程中高层立体停车结构动力响应分析  

Dynamic Response Analysis of High-rise Tridimensional Parking Structure During Horizontal Transfer Process of Vehicle

作　　者：贺拥军[1] 刘小华[1] 周绪红[1,2] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082 [2]重庆大学土木工程学院,重庆400044

出　　处：《建筑科学与工程学报》2015年第5期32-38,共7页Journal of Architecture and Civil Engineering

基　　金：国家自然科学基金项目(51178176);湖南省高校科技创新团队支持计划项目(湘财教指[2012]80号);湖南省自然科学基金项目(13JJ6022);中央高校基本科研业务费专项资金项目(531107040539)

摘　　要：采用大型通用有限元软件ANSYS中的APDL语言编程建立了高层立体停车结构的多尺度三维有限元模型，利用生死单元技术实现了移动质量沿梁匀速移动以模拟车辆沿梁的水平横移过程；对横梁动力特性进行了详细分析，得到了正常运行状态下横梁的动力响应放大系数，并进一步考察了移动质量与横梁间相互作用刚度、移动质量及移动速度等参数变化对横梁动态响应的影响规律，最后探讨了车辆横移情况下整体结构动力响应特性。结果表明：车辆横移过程引起的结构整体振动响应很小，可忽略不计；横梁的动力放大系数在1．4～1．7之间，应重点关注。T he multi‐scale three‐dimensional finite element model of the high‐rise tridimensional parking structure was established using APDL language programming in general finite element software ANSYS ,and the technique of birth and death element was adopted in the model to simulate the horizontal transfer process of vehicle on the vehicle‐carrying board along the beams . The dynamic response characteristic of beams was analyzed in detail and the dynamic amplification factors of beams under normal operating condition were obtained .Then the influences of contact stiffness between moving mass and beam ,moving mass and the moving velocity on the dynamic response of beams were investigated .Finally ,the dynamic response characteristic of the whole structure during the horizontal transfer process of vehicle was also discussed .The results show that the vibration response of w hole structure during the horizontal transfer process of vehicle is tiny and can be ignored .The dynamic amplification factors of beam are between 1 .4 and 1 .7 and should be paid attention to .

关 键 词：高层立体停车结构 水平横移 动力响应 动力放大系数 

分 类 号：TU248.3[建筑科学—建筑设计及理论]