既有线采用闪光焊插入短轨施工技术

Construction Technology of Inserting Short Track by Flash Welding on Existing Line

随着全球经济的快速发展和国际贸易活动的不断频繁,铁路交通运输水平也越迫切提高,这主要表现在两个方面,即增加高速新线的建设数量,提高运营里程;对既有线实施全面的改造,对其进行全面的提速和改进。因此,在当前的形势下,加强对铁路既有线改造的无缝铁路施工技术的研究,具有非常重大的现实意义。近年来,随着全球经济的快速发展,铁路交通运输行业的发展可谓突飞猛进,铁路建设中的提速、既有线改造以及无缝铁路施工成为当前最热门的话题。通过现场施工,总结了既有线采用闪光焊插入短轨施工技术。对施工人员组织、机械设备组织和车列组织进行了详细阐述,确定了钢轨焊接参数确定,新轨插入,现场轨道拨弯,闪光焊接和线路恢复的工艺流程。经现场运用考核,采用该方法施工能满足既有线天窗时间内施工要求,焊接接头服役状态良好。

With the rapid development of the global economy and the continuous frequency of international trade activities,the level of railway transportation is becoming increasingly urgent,which is mainly manifested in two aspects:Increasing the number of new high-speed lines to be constructed and increasing the operating mileage;Implement comprehensive transformation of existing lines,and comprehensively speed up and improve them.Therefore,under the current situation,it is of great practical significance to strengthen the research on seamless railway construction technology for the reconstruction of existing railway lines.In recent years,with the rapid development of the global economy,the development of the railway transportation industry can be described as rapid progress.Speed-up in railway construction,reconstruction of existing lines,and seamless railway construction have become the most popular topics at present.Through on-site construction,the construction technology of using flash welding to insert short rails on existing lines is summarized.The organization of construction personnel,mechanical equipment,and train sets is described in detail,and the process flow for determining rail welding parameters,inserting new rails,bending on-site rails,flash welding,and line restoration is determined.After on-site application and assessment,the method can meet the construction requirements for skylights on existing lines within the time limit,and the welded joints are in good service condition.