弹性支承块式无砟轨道精调施工质量控制分析-《高速铁路技术》

文章信息/Info

Title:: Analysis on the Quality Control of the Low Vibration Track Precise Adjustment

Author(s):: FANG Yun; PANG Xuqing; 1. Shaanxi Railway Institute, Weinan 714000, China;
2. Xi’an University of Technology, Xi’an 710048, China

Keywords:: low vibration track|ballastless track|precise adjustment of track panels|technological process|long tunnel|working area|quality control

摘要:: 弹性支承块式无砟轨道具有抗列车冲击和抗疲劳作用能力强的特性，主要应用于长度大于1 km的长大铁路隧道及隧道群中。本文以蒙华铁路弹性支承块式无砟轨道现场施工为背景，详细介绍了隧道内弹性支承块式无砟轨道采用轨排框架法施工的工艺流程和轨排精调的方法步骤。得出单线断面长大隧道无砟轨道采用排框架法施工可将施工区段分为5个工作区进行轨排布设；轨排精调作业中，相邻两组轨排框架的每两个支柱点要进行2次连续精调，相同轨排框架上的每3个支柱点要连续精调，换站测量需设置10 m过渡段等研究结论，可为类似工程案例精调作业提供参考。

Abstract:: The low vibration track is characterized by strong resistance to fatigue and impact force of train. It is mainly used in long railway tunnels (longer than 1 km) and tunnel groups. This paper takes the site construction of the low vibration track of the Haolebaoji-Ji’an Railway (formerly known as Menghua Railway) as an example, and introduces in detail the technological process of low vibration track construction in the tunnel using the track panel method as well as the method and steps of precise track panel adjustment. Several research conclusions are drawn, including mainly: (1) If the ballastless track in a long tunnel with single-track section is constructed through the track panel method, the construction section can be divided into 5 working areas for track panel arrangement. (2) During the precise adjustment of track panels, every two pillar points of the adjacent two sets of track panels shall be subject to two consecutive precise adjustments, every 3 pillar points on the same track panel shall also be subject to consecutive precise adjustments, and a 10 m transition section shall be set for surveying with station change. These conclusions can provide a reference for the precise adjustment operation of similar projects.