石郑客运专线路基设计有关问题的研究

研究目的:采用无碴轨道结构形式已成为高速铁路建设发展方向,通过对石郑客运专线路基有关问题进行分析研究,提出相应解决措施和建议。研究方法:借鉴国内外有关规定和经验,对石郑客运专线路基填料、地基处理、过渡段设置、路桥比较等重点方面进行研究和比选。研究结果:高速客运专线路基填料尽量选取天然合格填料或做好改良试验,选取适宜处理措施进行沉降控制和过渡段设置,合理确定路桥分界高度和路改桥段落。研究结论:高速客运专线无碴轨道铁路路基设计中,尤其在平原地区,应对路基填料、沉降控制、过渡段、路桥比较等方面给予重点考虑,并通过必要的试验、经济技术综合比较等方法确定最佳处理方案。

Research on Problems about Design of Subgrade for Shi Jiazhuang-Zhengzhou Passenger Dedicated Railway Line

Research purposes: As the introduction of ballastless track structure becomes the developed direction of high-speed railway line,this paper tries to get some solutions and suggestions in design application by analysis and research to subgrade for Shi Jiazhuang-Zhengzhou passenger dedicated railway line.Research methods:Refering to some regulation and experience at home and abroad,this paper studies and compares the subgrade filling,groundwork treatment,transition segment location,economy of subgrade and bridge,etc.for Shi Jiazhuang-Zhengzhou passenger dedicated railway line.Research results:For the high speed passenger dedicated railway line,the subgrade filling had better be crude and eligible or after improving test,the proper treatment measure should be adopted to control settlement,the transition segment should be properly designed and the height and section for the bridge and subgrade should be confirmed in reason.Research conclusions:In the design of ballastless track railway subgrade of high-speed passenger dedicated line,especially in plain area.We should emphasize considering on subgrade filling,settlement control,transition section and subgrade and bridge compare etc.and confirm the best scheme by some necessary tests and methods of economy and technique comprehensive comparison.