电梯轿厢和导轨耦合系统的地震响应分析
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摘要
为了研究电梯的抗震性能,本文以电梯轿厢体-轿厢架-导轨耦合系统为研究对象,利用La-grange方程和柔性动力学分别建立了轿厢体-轿厢架振动模型和导轨振动模型,并通过导靴与导轨之间的接触力,得到了轿厢体-轿厢架-导轨耦合振动方程。研究在地震激励作用下电梯轿厢和导轨耦合系统的地震响应。结果表明,轿厢体-轿厢架-导轨耦合模型可以反映出电梯轿厢、轿厢架和导轨之间的耦合振动以及模拟导靴与导轨的接触或脱离的关系。研究成果为电梯的抗震设计提供了一种有效的分析方法。
In order to study the seismic performance of elevator,the cage-frame-rail coupled system is taken as the object of study.The vibration model of the cage-frame is established by the Lagrange equation and the vibration model of multi-span rail is built by the flexible multi-body dynamics,separately.Then,the cage-frame-rail coupled vibration equations are developed by the forces between the guide shoes and rail.The seismic response of cageframe-rail coupled system is studied under the seismic excitation.The results show that the cage-frame-rail coupled model can reflect the coupled vibration among the cage,frame and rail and imitate the behavior of contact and separation between guide shoes and rail.The research will provide an effective analysis method for seismic design of elevator.
In order to study the seismic performance of elevator,the cage-frame-rail coupled system is taken as the object of study.The vibration model of the cage-frame is established by the Lagrange equation and the vibration model of multi-span rail is built by the flexible multi-body dynamics,separately.Then,the cage-frame-rail coupled vibration equations are developed by the forces between the guide shoes and rail.The seismic response of cageframe-rail coupled system is studied under the seismic excitation.The results show that the cage-frame-rail coupled model can reflect the coupled vibration among the cage,frame and rail and imitate the behavior of contact and separation between guide shoes and rail.The research will provide an effective analysis method for seismic design of elevator.
引文
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[2]郭丽峰,张国雄,李醒飞,等.电梯轿厢-导轨耦合动力系统建模及其动态特性[J].机械工程学报,2007,43(8):186-191.GUO Lifeng,ZHANG Guoxiong,LI Xingfei,et a1.Modeling of elevator cabin-rail coupled dynamic system and its properties[J].Chinese Journalof Mechanical Engineering,2007,43(8):186-191.(in Chinese)
[3]尹纪财,芮延年,蒋黎明,等.高速电梯多自由度水平动态特性及其仿真的研究[J].机械设计,2011,28(10):70-73.YIN Jicai,RUI Yannian,JIANG Liming,et al.Research on high-speed elevator MDOF horizontal dynamic characteristics and simulation[J].Journal of Machine Design,2011,28(10):70-73.(in Chinese)
[4]张健,金雪松,肖新标,等.车辆—轨道耦合动力学钢轨模型求解方法[J].交通运输工程学报,2011,11(2):32-38.ZHANG Jian,JIN Xuesong,XIAO Xinbiao,et al.Solution methods of rail model in vehicle—track coupling dynamics[J].Journal of Traffic andTransportation Engineering,2011,11(2):32-38.(in Chinese)
[5]张鹏,朱昌明,张梁娟.变长度柔性提升系统纵向—横向受迫耦合振动分析[J].工程力学,2008,25(12):202-206.ZHANG Peng,ZHU Changming,ZHANG Liangjuan.Analysis of forced coupled longitudinal-transverse vibration of flexible hoisting systems withvarying length[J].Engineering Mechanics,2008,25(12):202-206.(in Chinese)
[6]鲍华,徐礼华,周友.用ANSYS分析某高层建筑的非线性地震反应[J].武汉大学学报,2003,36(4):83-87.BAO Hua,XU Lihua,ZHOU You.Application of ANSYS to seismic response nonlinear analysis of high buildings[J].Engineering Journal of Wu-han University,2003,36(4):83-87.(in Chinese)
[7]朱昌明.电梯与自动扶梯[M].上海:上海交通大学出版社,1995:228.ZHU Changming.Elevevator and escalators[M].Shang Hai:Shanghai Jiao Tong University Press,1995:228.(in Chinese)
[8]朱昌明,孙立新,张晓峰,等.EN81-1:1998《电梯制造与安装安全规范》解读[M].北京:中国标准出版社,2007:284.ZHU Changming,SUN Lixin,ZHANG Xiaofeng,et al.EN81-1:1998 safety rules for construction and installation of electric lifts[M].Beijing:Standards Press of China,2007:284.(in Chinese)
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