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以北京市轨道交通昌平线施工为背景,介绍城市轨道交通一次性铺设跨区间无缝线路施工工艺和施工过程中的质量控制,主要是铺设无缝线路的关键工序,碎石道床横向阻力及支撑刚度施工方法,整体道床裂纹的控制及解决方案,钢轨焊接接头的质量控制及小半径曲线焊轨方案,无缝线路应力放散及锁定等施工方法,并分析在施工过程中影响施工质量的主要因素,结合城市轨道施工的特点,对施工过程中遇到的难点提出解决办法。
Taking the construction of Changping line of Beijing rail transit as a background, this paper introduces the construction technology of one-time laying of seamless railway lines in urban rail transit and the quality control during the construction process, which is mainly the key process of laying CWR. The horizontal resistance And support stiffness construction methods, the overall roadbed cracks in the control and solution, the quality of the rail welded joints and small radius curve rail program, the seamless line stress relief and locking and other construction methods, and analysis of the construction process affecting the quality of construction , Combined with the characteristics of urban track construction, put forward solutions to the difficulties encountered in the construction process.