严寒地区高速铁路路基地段无砟轨道设计

Design on ballastless track in subgrade section on high speed railway in frigid region

严寒地区铺设无砟轨道面临极端气温低、年温差大、季节性冻害和雪害等不利条件。本文结合环境气候特点和工程特征,通过轨道结构选型研究、无砟轨道试验段铺设试验、轨道结构优化设计,提出了适应严寒地区路基地段无砟轨道的结构形式、设计方案及关键材料的技术指标。

Laying ballastless track in frigid region often meets adverse conditions,such as extreme low temperature, huge annual temperature difference,seasonal frost and snow disaster. Combining with the environment and climate characteristics and engineering features,this paper presented the technical index for structure form,design scheme and key materials which adapt to the ballastless track in the subgrade section of frigid region through rail structure selection study,ballastless track laying test and track structure optimization design.