新型明桥面在重载铁路钢梁上的应用  

Application of New Type Open Deck on Steel Girder of Heavy Haul Railway

作　　者：李保龙[1] 曾志斌 王冬立 刘吉元 LI Baolong;ZENG Zhibin;WANG Dongli;LIU Jiyuan(Shuohuang Railway Development Co.Ltd.,Beijing 100038,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]朔黄铁路发展有限责任公司,北京100038 [2]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

出　　处：《铁道建筑》2021年第3期42-45,共4页Railway Engineering

基　　金：朔黄铁路发展有限责任公司科技基金(SHGF-14-51)。

摘　　要：针对传统的钢梁明桥面养护维修工作量大、不能满足重载铁路运输需求的问题,研制了新型铁路钢梁明桥面。除钢轨外,新型明桥面由复合材料桥枕及其配套扣件、复合材料护木和带专用垫块的钩螺栓、护轨扣件等组成,各项性能指标均优于既有桥面,且可以大幅减小养护维修工作量,减少对线路运营的影响。将新型明桥面应用于朔黄(朔州—黄骅港)铁路南运河特大桥上行线64m单线钢桁梁,并检测了使用前后主要构件的动应力、钢桁架梁动力性能、线路几何状态。结果表明,各项指标均满足现行铁路规范和标准的要求。In view of the problem that the traditional steel girder open deck maintenance workload is heavy and can not meet the needs of heavy haul railway transportation,a new type of railway steel girder open deck is developed.In addition to the rail,the new type open deck is composed of composite material bridge sleeper and its supporting fasteners,composite material guard timber,hook bolt with special cushion block,guard rail fastener,etc.Their all performance indexes are better than that of the existing deck,and can greatly reduce the maintenance workload and reduce the impact on the railway operation.The new type open deck is applied to the 64 m single track steel truss girder of the South Canal super large bridge of Shuozhou-Huanghuagang railway.The dynamic stress of main components,dynamic performance of steel truss girder and railway geometric state before and after use are tested.The results show that all indexes meet the requirements of current railway codes and standards.

关 键 词：重载铁路 明桥面 复合材料桥枕 复合材料护木 专用垫块 

分 类 号：U213.3[交通运输工程—道路与铁道工程]