中低速磁浮桥梁结构设计与试验研究  

Structural Design and Test of Track Beams for Medium/Low Speed Maglev

作　　者：颜志华[1] 

机构地区：[1]铁道第三勘察设计院,天津430012

出　　处：《都市快轨交通》2011年第3期70-73,共4页Urban Rapid Rail Transit

基　　金："十一五"国家科技支撑计划重点项目(2006BAG02B05)

摘　　要：对中低速磁悬浮轨道梁设计和试验进行系统阐述。研究表明:中低速磁悬浮轨道梁适宜采用单箱单室后张预应力混凝土简支梁,强度计算不是轨道梁的控制因素,但是截面扭矩很大;刚度和动力性能成为中低速磁悬浮轨道梁的设计控制因素,通过试验,给出刚度和自振频率限值。专门研制的拉力调高钢支座能保证轨道梁横向稳定,预制架设方法是最适宜的施工方法。Design and test of medium/low speed Maglev track beams are summarized in this paper.Studies show that single box simple beam is suitable for medium/low speed Maglev track beams,while beam strength is not a control factor whereas torques are very large.Beam stiffness and dynamic performance are control factors for medium/low speed Maglev track beam design.Limiting values of stiffness and free vibration frequency are put forward according to the experiment.A kind of tensile height-adjustable bearing is developed specially for track beams in order to guarantee their transverse stability.Prefabrication and on-site erection are the most suitable techniques for track beams.

关 键 词：城市轨道交通 中低速磁悬浮 桥梁 设计 试验 

分 类 号：U441[建筑科学—桥梁与隧道工程]