摘要
依托唐山试验线曲线半径为100m的17.7m+27m+17.7m斜弯连续梁,对中低速磁浮线轨道梁设计进行初步探讨。为了满足车辆限界和轨道安装及承轨台预埋件的要求,连续曲梁截面斜置,构成复杂的空间扭转曲线箱梁。轨道梁桥面与轨道采用承轨台上置式连接方式。为了增加轨道梁的横向稳定性,采取了增大梁宽、加大支座横向间距、设置拉力支座等构造措施。根据连续曲梁的受力特点,建立空间模型进行了计算分析,并参考相关规范,讨论了轨道梁刚度和动力特性的设计要求。
The design of low and medium speed maglev transportation track beam is discussed in this paper,with reference to a 17.7 m＋27 m＋17.7 m span and a 100 m radius continuous curved and inclined beam on Tangshan Test Route.This track beam is a complicated and twisted spatial box beam,its section is declined in order to satisfy the vehicle clearance,the track installation and the reburied member of rail bear.The track and beam face are linked by rail bear on the beam.Some construction measures are used,such as the increase of beam＇s span and transverse distance of support,the installation of tension support,etc.,in order to raise the track beam＇s transverse stability.The stiffness and dynamic property of track beam is discussed by referring to a set of codes,and a space model of beam is analyzed according to the loading characteristics continuous curved beam.The calculated result indicates that the continuous curved beam accords with all formulations.
出处
《城市轨道交通研究》
北大核心
2010年第4期54-57,共4页
Urban Mass Transit
关键词
中低速磁浮
连续梁
设计
low/medium speed Maglev transportation
continuous beam
design
