柔性摩天轮结构抗震性能研究
|
摘要
以208 m高的北京某摩天轮结构为研究对象,使用ANSYS对其进行了自振特性和抗震性能分析。首先探讨摩天轮结构自振特性振型特点,并分析了结构随参数变化的自振特性;然后分别采用反应谱法和时程分析法计算多遇地震作用下结构地震响应;最后对结构进行了罕遇地震下弹塑性动力时程分析。研究结果表明:结构基频较低而且结构频谱比较密集,轮盘部分刚度较弱,多数振型以轮盘自身振动为主;在多遇地震作用下,变形指标符合国家现行相关规范要求,整体结构应力水平较低,满足结构弹性、小震不坏的要求;在罕遇地震作用下,摩天轮结构整体结构构件均未屈服并均处于弹性阶段,结构变形指标符合国家现行相关规范要求,抗震性能优于"大震不倒"的抗震性能目标要求。
Based on a case study of a 208-meter-high ferris wheel under construction,both its dynamic characteristic and aseismic behavior were studied with ANSYS.Firstly,its natural vibration characteristics with various structural parameters were studied.The numerical results indicated that its basic frequency is lower and its frequency spectrum is concentrated;its main modal shapes reflect rim's vibration because stiffness of rim structure is smaller.Then,the responses of the structure under frequently occuring earthquake were analyzed with both the response spectrum method and the time-history method,respectively.Its structural deformation met the requirements of Chinese code for aseismic design of buildings.The stress of the whole structure's members was smaller and met the requirement of no-damage under frequently occuring earthquake.Finally,the responses of the structure under rare earthquake were studied using the dynamic elastic-plastic time-history method.The numerical results demonstrated that the inelastic deformation met the requirements of Chinese code for aseismic design of buildings and no-collapse appears under rare earthquake.
Based on a case study of a 208-meter-high ferris wheel under construction,both its dynamic characteristic and aseismic behavior were studied with ANSYS.Firstly,its natural vibration characteristics with various structural parameters were studied.The numerical results indicated that its basic frequency is lower and its frequency spectrum is concentrated;its main modal shapes reflect rim's vibration because stiffness of rim structure is smaller.Then,the responses of the structure under frequently occuring earthquake were analyzed with both the response spectrum method and the time-history method,respectively.Its structural deformation met the requirements of Chinese code for aseismic design of buildings.The stress of the whole structure's members was smaller and met the requirement of no-damage under frequently occuring earthquake.Finally,the responses of the structure under rare earthquake were studied using the dynamic elastic-plastic time-history method.The numerical results demonstrated that the inelastic deformation met the requirements of Chinese code for aseismic design of buildings and no-collapse appears under rare earthquake.
引文
[1]Mann A P,Thompson N,Smits M.Building the britishairways london eye[J].Civil Engineering,2001,144(1):60-72.
[2]Allsop A,Dallard P,Hui H K,et al.The singapore flyer[J].The Arup Journal,2008(2):3-14.
[3]Moehle J P.Preliminary Report on the seismological and engi-neering aspects of the january 17,1994North B ridge earth-quake[R].Earthquake Engineering Research Center reportNo.UCB/EERC-94/01,University of Califirnia,1994.
[4]Clough R W,Pinzien J.Dynamics of structures[M].McGraw-H ill,Inc.,1993.
[5]朱礼敏,宋涛,马明.天津慈海桥摩天轮结构的抗震性能分析[J].建筑结构,2008,38(2):70-73.ZHU Li-min,SONG Tao,MA Ming.Seismic behavior ofskyscraper wheel structure in tianjin Cihai Bridge[J].Building Structure,2008,38(2):70-73.
[6]王小盾,石永久,王元清,等.新型斜拉桥和摩天轮组合结构动力性能分析[J].工程抗震与加固改造,2006,28(1):25-30.WANG Xiao-dun,SHI Yong-jiu,WANG Yuan-qing.Analysis on dynamic features of composite structure of newcable-stayed bridge with giant wheel[J].EarthquakeResistant Engineering and Retrofitting,2006,28(1):25-30.
[7]沈之容,倪阳,马人乐.上海之星摩天轮结构自振特性研究[J].特种结构,2007,24(1):54-56.SHEN Zhi-rong,NI Yang,MA Ren-le.Dynamiccharacteristic analysis of Ferris wheel of Shanghai star[J].Special Structure,2007,24(1):54–56.
[8]丁洁民,冯峰,杨晖柱.巨型柔性摩天轮结构分析与研究[J].建筑结构,2010,40(10):66-70.DING Jie-min,FENG Feng,YANG Hui-zhu.Structuralanalysis and research of giant flexible Ferris wheel[J].Building Structure,2010,40(10):66-70.
[9]赵奋,丁洁民,杨晖柱,等.柔性巨型摩天轮结构的非线性分析[J].同济大学学报,2011,39(5):675-681.ZHAO Fen,DING Jie-min,HANG Hui-zhu,et al.Nonlinear analysis of flexible giant ferris wheel[J].Journal ofTongji University(natural science),2011,39(5):675-681.
[10]崔晓强,郭彦林.弦支穹顶结构的抗震性能研究[J].地震工程与工程振动,2005,25(1):67-75.CUI Xiao-qiang,GUO Yan-lin.Seismic behaviors of suspen-dome structure[J].Earthquake Engineering and EngineeringVibration,2005,25(1):67-75.
[11]郭永昌,李丽娟,谢志红.双层球面网壳结构的抗震性能分析[J].空间结构,2005,11(4):36-40.GUO Yong-chang,LI Li-juan,XIE Zhi-hong.Antiseismicanalysis of double-layer grid shell structures[J].SpatialStructures,2005,11(4):36-40.
[12]马人乐,赵林,何敏娟.大型超高钢结构电视塔抗震性能分析[J].同济大学学报,2007,35(10):1310-1315.MA Ren-le,ZHAO Lin,HE Min-juan.Earthquake resistantbehavior of super high-rising steel tower[J].Journal of TongjiUniversity(natural science),2007,35(10):1310-1315.
[13]李春祥,汪英俊,钟秋云,等.复杂形体超高钢结构电视塔抗震性能分析研究[J].振动与冲击,2011,30(10):61-72.LI Chun-xiang,WANG Ying-jun,ZHONG Qiu-yun.Earthquake resistant behaviors of a complex shape super high-rise steel TV tower[J].Journal of Vibration and Shock,2011,30(10):61-72.
[2]Allsop A,Dallard P,Hui H K,et al.The singapore flyer[J].The Arup Journal,2008(2):3-14.
[3]Moehle J P.Preliminary Report on the seismological and engi-neering aspects of the january 17,1994North B ridge earth-quake[R].Earthquake Engineering Research Center reportNo.UCB/EERC-94/01,University of Califirnia,1994.
[4]Clough R W,Pinzien J.Dynamics of structures[M].McGraw-H ill,Inc.,1993.
[5]朱礼敏,宋涛,马明.天津慈海桥摩天轮结构的抗震性能分析[J].建筑结构,2008,38(2):70-73.ZHU Li-min,SONG Tao,MA Ming.Seismic behavior ofskyscraper wheel structure in tianjin Cihai Bridge[J].Building Structure,2008,38(2):70-73.
[6]王小盾,石永久,王元清,等.新型斜拉桥和摩天轮组合结构动力性能分析[J].工程抗震与加固改造,2006,28(1):25-30.WANG Xiao-dun,SHI Yong-jiu,WANG Yuan-qing.Analysis on dynamic features of composite structure of newcable-stayed bridge with giant wheel[J].EarthquakeResistant Engineering and Retrofitting,2006,28(1):25-30.
[7]沈之容,倪阳,马人乐.上海之星摩天轮结构自振特性研究[J].特种结构,2007,24(1):54-56.SHEN Zhi-rong,NI Yang,MA Ren-le.Dynamiccharacteristic analysis of Ferris wheel of Shanghai star[J].Special Structure,2007,24(1):54–56.
[8]丁洁民,冯峰,杨晖柱.巨型柔性摩天轮结构分析与研究[J].建筑结构,2010,40(10):66-70.DING Jie-min,FENG Feng,YANG Hui-zhu.Structuralanalysis and research of giant flexible Ferris wheel[J].Building Structure,2010,40(10):66-70.
[9]赵奋,丁洁民,杨晖柱,等.柔性巨型摩天轮结构的非线性分析[J].同济大学学报,2011,39(5):675-681.ZHAO Fen,DING Jie-min,HANG Hui-zhu,et al.Nonlinear analysis of flexible giant ferris wheel[J].Journal ofTongji University(natural science),2011,39(5):675-681.
[10]崔晓强,郭彦林.弦支穹顶结构的抗震性能研究[J].地震工程与工程振动,2005,25(1):67-75.CUI Xiao-qiang,GUO Yan-lin.Seismic behaviors of suspen-dome structure[J].Earthquake Engineering and EngineeringVibration,2005,25(1):67-75.
[11]郭永昌,李丽娟,谢志红.双层球面网壳结构的抗震性能分析[J].空间结构,2005,11(4):36-40.GUO Yong-chang,LI Li-juan,XIE Zhi-hong.Antiseismicanalysis of double-layer grid shell structures[J].SpatialStructures,2005,11(4):36-40.
[12]马人乐,赵林,何敏娟.大型超高钢结构电视塔抗震性能分析[J].同济大学学报,2007,35(10):1310-1315.MA Ren-le,ZHAO Lin,HE Min-juan.Earthquake resistantbehavior of super high-rising steel tower[J].Journal of TongjiUniversity(natural science),2007,35(10):1310-1315.
[13]李春祥,汪英俊,钟秋云,等.复杂形体超高钢结构电视塔抗震性能分析研究[J].振动与冲击,2011,30(10):61-72.LI Chun-xiang,WANG Ying-jun,ZHONG Qiu-yun.Earthquake resistant behaviors of a complex shape super high-rise steel TV tower[J].Journal of Vibration and Shock,2011,30(10):61-72.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心