摘要
高速铁路路基容易受环境、气候等因素影响发生沉降变形,从而影响高速铁路轨道的高平顺性。路基作为土工构筑物,受水害影响尤为明显,做好路基防水至关重要。近年来,全断面沥青混凝土防水层结构开始在高速铁路路基工程上应用,在郑徐客专开封段针对该新型防水结构设置了试验段,探索全断面沥青混凝土防水层应用于高速铁路在设计、施工阶段的技术要点,并对发现的问题进行技术优化;试验段施工完成后,对静、动态及运营期进行了跟踪监测。结合郑徐试验段的实施和对监测数据进行对比分析,得出相关结论,可为后续推广提供应用参考。
The subgrade works of high speed railways is prone to settlement deformation due to environmental,climate and other factors, thus affecting the regularity of tracks. As an earth structure, subgrade is badly affected by flood damage. Therefore, waterproof measures for subgrade is very important. In recent years, the fullsection asphalt concrete waterproof layer has been applied to the subgrade works of high speed railways. In Kaifeng Section of Zhengzhou-Xuzhou Passenger Dedicated Line, a test section has been set for the new waterproof structure to explore the key technical issues in the design and construction of the full-section asphalt concrete waterproof layer applied to high speed railways, and technical optimization has been carried out accordingly. After the test section was completed, static and dynamic tracking and monitoring was carried out in the operation period. Based on the application to the test section on Zhengzhou-Xuzhou Passenger Dedicated Line and the comparative analysis of monitoring data, conclusions are made to provide reference for the future application on a large scale.
作者
唐于欣
TANG Yuxin(Engineering Department,Zhengzhou-Wanzhou Passenger Dedicated Line Henan Co Ltd,Zhengzhou Henan 450000,China)
出处
《铁路技术创新》
2021年第2期99-107,共9页
Railway Technical Innovation
关键词
高速铁路
设计及施工
无砟轨道
路基防水层
全断面
沥青混凝土
high speed railway
design and construction
ballastless track
waterproof layer of ballastless track subgrade
full section
asphalt concrete
