研究目的：客运专线的快速、安全运营至关蕈要。高寒地区轨道结构型式的合理选择直接影响高速列车正常运营。本文通过对国内外高速列车轨道结构型式的分析，结合哈齐客运专线自身的特点，确定合理的轨道结构型式。
研究结论：哈齐客运专线采用无砟轨道结构型式，可以保证：(1)有效地防止路基冻胀病害，满足高速列车运行的高平顺性要求；(2)解决了该地区冬季养护维修难度大，维修成本过高的问题；(3)便于融雪设施的安装和使用，因此为安全运营提供了设备保障。
Research purposes: The rapid and safe running of train is the most important to the passenger dedicated line．Whether the reasonable track structure is adopted or not in extremely cold area directly influences the normal running of train．After the analysis of track structure type at home and abroad and considering the actual characteristics of Harbin—Qiqihaer Passenger Dedicated Line，the reasonable track structure type was chosen．
Research conclusions: The ballastless track structure was adopted in Harbin—Qiqihaer Passenger Dedicated Line，with the following merits：(1)It can prevent the subgrade frost heave effectively to satisfy the requirement of track regularity for running high—speed train；(2)It can solve the problem of difficult maintenance of track in winter with high maintenance cost；(3)It is easy to install and use the snow thawing equipment to guarantee the traffic safety．
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