金沙洲隧道无砟道床板病害整治施工技术  

Construction Technology for Treatment of Defects in Ballastless Bed of Jinshazhou Tunnel

作　　者：郑新国 董武 李书明 杨德军 刘竞 曾志 潘永健 ZHENG Xinguo;DONG Wu;LI Shuming;YANG Dejun;LIU Jing;ZENG Zhi;PAN Yongjian(Railway Engineering Research Institute,China Academy of Railway Sciences Co.,Ltd.,Beijing 100081,China;China Railway Group Co.,Ltd.,Beijing 100844,China)

机构地区：[1]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081 [2]中国国家铁路集团有限公司,北京100844

出　　处：《施工技术》2021年第4期65-68,共4页Construction Technology

基　　金：中国铁路总公司科技开发项目(2017G002-D)。

摘　　要：金沙洲隧道线路运营期间,无砟轨道道床板混凝土出现裂损、掉块现象,严重危及行车安全,急需对其进行整治,以防病害进一步发展。在对金沙洲隧道道床板裂损病害原因分析的基础上,针对性提出疏导病害源头、局部修复严重病害、主动防御有害侵蚀的综合整治方案,以消除行车安全风险,恢复无砟轨道结构整体性能。同时,根据病害实际情况,采取疏通排水、钢筋处理、混凝土修复及表面防护为一体的整治技术,彻底解决道床板裂损问题。During the operation of the Jinshazhou Tunnel,the concrete of the ballastless track bed slab cracked and fell off,which seriously jeopardized driving safety.It is urgently needed to be rectified to prevent further development of the disease.On the basis of the analysis of the causes of the cracks and diseases of the Jinshazhou Tunnel's track bed,this paper puts forward a comprehensive treatment plan of dredging the source of the disease,repairing the serious disease locally and actively preventing the harmful erosion,so as to eliminate the traffic safety risk and restore the overall performance of the ballastless track structure.At the same time,according to the actual situation of the disease,the renovation technology of dredging and drainage,reinforcement treatment,concrete repair and surface protection is adopted to thoroughly solve the problem of crack of the road bed plate.

关 键 词：隧道工程 道床板 病害整治 检测 施工技术 

分 类 号：U216.4[交通运输工程—道路与铁道工程]