川中红层泥岩高速铁路基上拱病害处理设计

The Design of Disease Treatment for the Upheaval of Subgrade of High-speed Railway on Red Bed Mudstone in Central Sichuan

高速铁路无砟轨道路基工程在川中红层泥岩区域建设过程中产生了上拱的病害,严重影响了行车安全性,且上拱病害整治处理的难度高、代价大,因此应从勘察设计阶段采取针对性的预防和处理措施,从根本上有效消除上拱病害的影响。本文在总结川中红层泥岩区域上拱病害工程案例经验教训的基础上,归纳了影响路基上拱病害产生的4个重要因素,研究探讨了在川中红岩地区的两条高速铁路勘察设计阶段,有效地降低路基上拱风险的工程设计措施,可为类似工程设计提供借鉴和指导。

Upheaval disease has been produced during the subgrade works for ballastless track of high-speed railway in red mudstone areas in Central Sichuan,seriously affecting the safety of train operation,and its treatment is difficult and costly.Therefore,targeted prevention and treatment measures should be taken from the survey and design stage to fundamentally and effectively eliminate the impact of the upheaval disease.On the basis of summarizing the experience and lessons of the engineering cases of the upheaval disease in the red bed mudstone areas of Central Sichuan,this paper generalizes four important factors affecting the occurrence of the upheaval disease of the subgrade and discusses the engineering design measures to effectively reduce the risk of the upheaval disease of the subgrade in the survey and design stages of two high-speed railways in red bed mudstone areas of Central Sichuan,providing reference and guidance for similar engineering design.