山区高速铁路轨道结构选型分析

渝万客运专线是成渝地区铁路网主骨架线路。山区高铁的修建，轨道结构型式的选择十分重要。在介绍我国高速铁路主要的轨道结构型式后，以渝万山区高速铁路轨道选型为例，结合山区铁路线路的特点对轨道结构选型进行了系统分析，最终选用以有砟轨道为主，长度大于6 km的隧道内铺设CRTSⅠ型双块式无砟轨道的混合结构形式。

Analysis on Selection of Track Structure for High-speed Railway in Mountain Area

Chongqing-Wanzhou Passenger Dedicated Line is the main line of the railway net in Chengdu- Chongqing region. The construction of high-speed railway in mountain area and the selection of the track structure are very important. After introduction of main track structures of express railway in our country, taking the type selection for the high-speed railway track in the mountain area of Chongqing and Wanzhou for example and combining with the characteristics of railway in mountain area, the type selection is analyzed systematically. Finally, the combined structure with ballast track as the main and CRTS I double-block ballastless track laid inside the tunnel over 6 km long is selected.