无轴式摩天轮结构的抗震性能分析  

Seismic Behavior of a No-shaft Ferris Wheel

作　　者：范楷[1] 刘哲[1] Fan Kai Liu Zhe(School of Civil Engineering, Tianjin University, 300072, Chin)

机构地区：[1]天津大学建筑工程学院,300072

出　　处：《特种结构》2016年第6期6-12,共7页Special Structures

摘　　要：本文通过对潍坊白浪河无轴式摩天轮结构的抗震性能进行分析,为今后类似结构的抗震设计提供参考。首先,采用有限元软件ANSYS对结构进行了动力特性分析;然后,采用振型分解反应谱法和时程分析法计算了多遇地震作用下的结构地震响应;最后,采用弹塑性动力时程分析法进行了罕遇地震作用下的地震响应分析。研究结果表明:结构基频较低而且频谱密集,多数振型以Y向振动为主;多遇地震作用下,结构的强度和变形均满足国家规范要求;罕遇地震作用下,结构构件均处于弹性阶段,结构变形满足国家规范要求。由此可见,无轴式摩天轮结构的抗震性能良好,可为其他类似工程提供借鉴。To provide reference for the seismic design of similar structures in the future, the seismic behavior of Bailanghe no-shaft ferris wheel in Weifang was analyzed in this paper. Firstly, the dynamic characteristics of the Ferris wheel were studied with the finite element software ANSYS. Then, the responses of the structure under frequently occurring earthquake were analyzed with both the response spectrum method and the time-history analysis method. Finally, the responses of the structure under rare earthquake were studied with the dynamic elastic-plastic time-history method. The results showed that the basic frequency of the structure was lower and its frequency spectrum was concentrated; the main modal shapes reflected vibration in Y direction. Its strength and deformation met the requirements of Chinese code under frequently occurring earthquake. Under rare earthquake, all the structural members were in the elastic stage and the deformation of the structure met the requirement of Chinese code. The conclusion is that the structure has favorable seismic behavior and can provide reference for other similar structures.

关 键 词：无轴式摩天轮 动力特性 抗震性能 反应谱 时程分析 

分 类 号：TU352.11[建筑科学—结构工程]