运营高铁无砟轨道桥梁顶升平移纠偏技术研究——以京沪高铁秦淮河特大桥桥梁偏移整治工程为例  

Research on Jacking-up and Translation Rectification Technology of Ballastless Track Bridge in Operating of High Speed Railway:A case study of the bridge deviation rectification project of Qinhuai River Bridge on Beijing-Shanghai High Speed Railway

作　　者：陈侃[1] CHEN Kan(China Railway Si yuan Survey and Design Group Co.Ltd,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《科技和产业》2023年第9期239-245,共7页Science Technology and Industry

基　　金：中国铁建股份有限公司2017年度科研计划课题(17-C39)。

摘　　要：高速铁路开通运营后,受周边环境变化及人类工程活动等因素影响,部分高铁桥梁地段出现了超出扣件系统可调范围的横向偏移,严重影响了线路平顺性及列车安全运行。在分析已有纠偏技术基础上,基于摩擦阻荷原理,通过利用竖向千斤顶摩擦力平衡水平千斤顶顶推反力,建立无砟轨道桥梁顶升平移纠偏模型及联动装置,提出一种无须单独布设反力装置的新型纠偏技术,并在实际工程中得到成功应用。实测数据表明:天窗点施工期间导致的轨道结构次生应力及层间相对位移远小于日间列车运行及温度变化对轨道结构的影响;通过顶升平移纠偏后,桥梁及轨道结构状态稳定,线路线形调整量在2 mm范围内,采用普通扣件调整即可满足设计精度要求。研究成果可为类似工程的纠偏施工提供借鉴和参考。After the operation of high speed railway,affected by the surrounding environmental changes and human engineering activities,some high speed railway bridge experienced lateral deviation beyond the adjustable range of the fastener system,which seriously affected the line smoothness and the train safe operation.Based on the analysis of the existing rectification technology and the principle of friction resistance,by using the vertical jack friction to balance the horizontal jack pushing reaction force,the jacking-up and translation rectification model and linkage of ballastless track bridge are established,and a new type of rectification technology without setting the reaction device alone is proposed,which has been successfully applied in practical engineering.The measured data shows that the secondary stress and the relative displacement of track structure caused by skylight point construction are far less than the influence of daytime train operation and temperature change on track structure.After the jacking-up and translation rectification,the bridge and track structure are stable,and the alignment adjustment amount of the line is within 2 mm,which can meet the design accuracy requirement by ordinary fastener adjustment.The research results can provide reference for the rectification construction of similar projects.

关 键 词：运营高铁 无砟轨道桥梁 平移纠偏模型 关键施工工艺 监测数据 纠偏效果 

分 类 号：U216.4[交通运输工程—道路与铁道工程]