摘要
综合桥上无缝线路和无缝道岔的技术特点,桥上铺设无缝道岔对高速铁路桥梁设计提出了更高的要求。针对高速铁路咽喉区和渡线道岔区特点,确定无砟轨道无缝道岔对桥梁结构变形及梁缝位置的要求,提出道岔区桥梁设计原则与技术要求,以及典型道岔区桥梁布置以及结构形式。高速铁路道岔区桥梁设计以道岔与桥梁相互作用理论为基础,充分考虑轨道作用力的影响,通过车-岔-桥耦合动力响应分析,确保高速列车运行的安全性、平稳性。
Continuous welded rail and turnout on bridge have their unique and complicated technical characteristics, so there are higher requirements for bridge design when laying continuous welded turnout on a bridge. This paper, focusing on the features of throat zone and crossover turnout zone of high-speed railway, determined the requirements on how to control bridge structure deformation and where to arrange bridge deformation joints at continuous welded turnout zone of ballastless track. In addition, this paper proposed bridge design principle and technical requirement at turnout zone, as well as bridge arrangement and structure forms at typical turnout zones. It is suggested in this paper that the design of bridge at turnout zone of high-speed railway should be based on the theory of integration between turnout and bridge, should be with adequate consideration of the influence of track action force and should be subject to vehicle-turnout-bridge coupling dynamic analysis, so as to ensure operation safety and stability of high-speed train.
出处
《铁道标准设计》
北大核心
2014年第7期85-88,共4页
Railway Standard Design
关键词
高速铁路
桥梁
道岔
设计
综述
high-speed railway
bridge
turnout
design
summary
