摘要
中低速磁浮线既有的轨道约束方式和一般接头结构无法适应轨缝伸缩量超过40 mm的轨道设计要求。本设计的轨道伸缩调节器结构,将纵向间隔设置的钢轨枕单元,通过纵向连接板和筋板结构连接成一个整体;并在纵向连接板上考虑地脚螺栓式、弹条扣压式和扣板式三种约束方式,从根本上改变了既有轨道结构及其约束方式。轨道伸缩调节器结构可使桥梁和轨道之间产生相对运动,以释放桥梁过大的纵向伸缩变形,从而减小大跨度桥梁伸缩量对行车的影响。
The existing track constraint ways and the struc- ture of general track joint used for mid-low speed maglev system are unable to meet the track design requirements for large expansion and contraction joint that exceeds 40mm. A new track expansion and contraction joint adjuster is de- signed, where the longitudinal-arrayed rail sleepers are connected by longitudinal connecting plates and ribs. The adjuster is constrained by three ways： the foundation bolt, rail spring clip and spring blade, they have changed the tra- ditional track structure and constraint ways. Since relative movement exists between track and bridge, the large longi- tudinal expansion and contraction of a bridge can be re- leased. This adjuster design could reduce the impact of bridge expansion and contraction on train safety running.
出处
《城市轨道交通研究》
北大核心
2016年第1期118-122,共5页
Urban Mass Transit
关键词
中低速磁浮线
轨道伸缩调节器
结构设计
mid-low speed maglev line
track joint expan-sion and contraction adjuster
structure design
