金沙洲隧道无砟道床板病害整治施工技术

作者：郑新国董武李书明杨德军刘竞曾志潘永健

单位：中国铁道科学研究院集团有限公司铁道建筑研究所中国国家铁路集团有限公司

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。

关键词：隧道工程道床板病害整治检测施工技术

作者简介：郑新国,研究员,E-mail:153095124@qq.com。
基金：中国铁路总公司科技开发项目(2017G002-D)。 -页码-：65-68

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

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. China Railway Group Co.,Ltd.)

Abstract: 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.

Keywords: tunnels; ballastless track bed; disease control; detection; construction

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