京张高铁八达岭站道岔对向布置夹直线长度分析  

Analysis of the Intermediate Straight Line Length between Opposite Arranged Turnouts in the Badaling Station of Beijing-Zhangjiakou High-speed Railway

作　　者：丁大朋 Ding Dapeng(China Railway Engineering Design and Consulting Group Co.,Ltd.,Beijing 100055,China)

机构地区：[1]中铁工程设计咨询集团有限公司,北京100055

出　　处：《铁道勘察》2020年第4期84-87,共4页Railway Investigation and Surveying

摘　　要：为了节省工程投资,优化正线上道岔对向布置夹直线长度,在对车站运输组织中第三方向引入及立折车等不同作业分析的基础上,对现有道岔结构及不同线间距对应的渡线上直线长度进行分析,当列车同时侧向通过两组道岔时,速度及相关动力特性受渡线上直线长度的影响。提出了对向布置的道岔间夹直线长度应与正线间渡线上直线长度相匹配,对向道岔间夹直线长度宜采用25 m的建议,并结合京张高铁八达岭长城站进行工程验证。研究表明,在空间受限的困难车站,可结合接发车作业、区间走向、引入车站线路建设方案进行综合分析,以确定对向布置道岔间夹直线长度。In order to save project investment,the length of intermediate straight line between opposite arranged turnouts on the main line was optimized.Based on the analysis of different operations such as the introduction of third direction and the immediate turn back vehicle in transportation organization of railway station,the existing turnout structure and the straight-line length of crossover in different line spacing was analyzed.When the train passes two groups of turnouts at the same time,the speed and relevant dynamic characteristics are affected by the straight-line length of the crossover.It was suggested that the length of intermediate straight line between opposite arranged turnouts should match the straight-line length of crossover on the main lineand the length of intermediate straight line between opposite arranged turnouts should be 25 m.The project verification was carried out in combination with Badaling station of Beijing-Zhangjiakou high-speed railway.The research shows that in order to determine the length of intermediate straight line between opposite arranged turnouts,it should be analyzed comprehensively combined with receiving and departure operation,section direction and construction scheme of railway entry station in the railway station with limited space.

关 键 词：京张高铁 对向布置 正线渡线 导曲线 振动叠加 通过速度 

分 类 号：U231.4[交通运输工程—道路与铁道工程] U212.33