摘要
在城市轨道交通工程的正线、辅助线及配线设计时,需要设置单渡线。由于正常线间距很难满足《地铁设计规范》对单渡线插入短钢轨长度的要求,通常采用加宽线间距的方法解决,但恶化了正线标准、加大工程量。对单渡线的插入短钢轨长度不满足《地铁设计规范》要求时,在单渡线结构不作加强和改进,并以确保行车安全为前提的基础上对单渡线线间距作了探讨。
Single crossovers are usually set for urban rail transit lines, because the distance between tracks of the main line couldn＇t meet the demand of Code for Metro Design （GB50157 -2003） which is about the length of middle rail of single crossover. The general way is to broaden the distance between tracks, but that would worsen the conditions of main line and cause the increase of engineering. This paper discusses the distance between tracks of main line irrelevant to Code for Metro Design（GB50157- 2003）, proposes the structure of the single crossover which couldn＇ t be reconstructed or strengthened, in order to find some solutions to this problem.
出处
《城市轨道交通研究》
2007年第4期52-53,56,共3页
Urban Mass Transit
关键词
城市轨道交通
单渡线
线间距
urban rail transit, single crossover, distance between centers of tracks
