高铁大跨度斜拉桥上无砟轨道轨排平面位置测控新方法研究  

Study on a New Method for Measuring and Controlling the Plane Position of Ballastless Track Panels on Long-Span Cable-Stayed Bridges for High-Speed Rail

作　　者：李佩奇 黄志斌 刘成龙 李斌彬 梁奇 李麒麟 杨雪峰 LI Peiqi;HUANG Zhibin;LIU Chengong;LI Binbin;LIANG Qi;LI Qiin;YANG Xuefeng(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;Southeast Coastal Railway Fujian Co.,Ltd.,Fuzhou 350013,China;China Railway Construction Bridge Engineering Bureau Group Co.,Ltd.,Tianjin 300308,China)

机构地区：[1]西南交通大学地球科学与环境工程学院,成都611756 [2]东南沿海铁路福建有限责任公司,福州350013 [3]中国铁建大桥工程局集团有限公司,天津300308

出　　处：《铁道标准设计》2024年第9期47-52,59,共7页Railway Standard Design

基　　金：国家自然科学基金项目(41971281);中国铁路南昌局集团有限公司科技研究开发计划项目(202160)。

摘　　要：为探讨高铁大跨度斜拉桥主梁结构稳定性差且桥面形变量大,主梁上CPⅢ控制点平面坐标受到荷载、温度变化导致多值性,海湾风力大导致主梁上智能型全站仪难以整平和设站精度低等问题,依托新建福厦高速铁路安海湾大跨度斜拉桥工程,对上述技术问题进行研究,提出一种采用“准直线法”进行高铁大跨度斜拉桥主梁上无砟轨道轨排平面位置测控的新方法。通过在主梁上单侧钢轨的中心线布设若干个平面基准点,建立一条无砟轨道轨排平面位置测控基准线,通过“准直线法”实测无砟轨道轨排工具轨与基准线间的横向偏差,并验证“准直线法”测控坐标与设计坐标较差小于规范要求的2 mm限差,进而指导无砟轨道轨排工具轨平面精调工作。研究结果表明:“准直线法”克服了大跨度斜拉桥主梁上CPⅢ点坐标的多值性和智能型全站仪设站困难等问题,达到指导主梁上无砟轨道横向精调的目的;通过检测点间的横向坐标偏差之差,验证了“准直线法”的精度和可靠性均能够满足高速铁路工程测量规范的要求。该方法已经成功指导安海湾大跨度斜拉桥主梁上的无砟轨道施工,从而保证了新建福厦高铁控制性工程的顺利施工,可为今后大跨度斜拉桥上无砟轨道轨排工具轨施工平面精调工作提供参考。To address issues such as poor structural stability of the main girder in long-span cable-stayed bridges for high-speed rail,significant deformation of the bridge deck,the multi-valued nature of the CPIII control point plane coordinates caused by load and temperature changes,and difficulty in leveling and low precision of setting up intelligent total stations due to the strong coastal winds,a study was conducted based on the newly-built Anhai Bay long-span cable-stayed bridge on the Fuzhou-Xiamen High-speed Railway.The study proposed a new method for measuring and controlling the plane position of the ballastless track on the main girder in long-span cable-stayed bridges using"quasi-linear line"method.Several plane reference points were laid out along the centerline of one side of the rail on the main girder to establish a reference line for measuring and controlling the plane position of the ballastless track."Quasi-linear line"method was used to measure the lateral deviation between the ballastless track tool rail and the reference line.It was verified that the deviation between the measured and designed coordinates using this method was less than the 2mm tolerance required by relevant standards.This provided guidance for further adjusting the plane position of the ballastless track tool rail.The results showed that the"quasi-linear line"method overcame the issues of multi-valued CPIII point coordinates on the main girder of long-span cable-stayed bridges and the difficulty in setting up intelligent total stations,successfully guiding the lateral fine adjustment of the ballastless track on the main girder.By detecting the differences in lateral coordinate deviations between points,it was confirmed that the accuracy and reliability of the"quasi-linear line"method met the requirements of high-speed railway engineering survey specifications.This method has successfully guided the construction of the ballastless track on the main girder of the Anhai Bay long-span cable-stayed bridge,ensuring smooth construction of

关 键 词：高速铁路 铁路桥梁 大跨度斜拉桥 无砟轨道 轨排精调 准直线法 CPⅢ控制点 

分 类 号：U238[交通运输工程—道路与铁道工程] U24[建筑科学—桥梁与隧道工程] U448.27