朔黄铁路扣件强化措施及应用效果  

Strengthening Measure and Application Effect of Fastening on Shuozhou-Huanghuagang Railway

作　　者：张斌 张欢 郄录朝 李子睿 崔树坤 李彦山 ZHANG Bin;ZHANG Huan;QIE Luchao;LI Zirui;CUI Shukun;LI Yanshan(Guoneng Shuohuang Railway Development Co.Lld,Suning Hebei 062350,China;Beijing Tieke Shougang Rail Technology Co.Lid,Beijing 102206,China;Railway Engineering Research Institute,China Academy of Raiway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]国能朔黄铁路发展有限责任公司,河北肃宁062350 [2]北京铁科首钢轨道技术股份有限公司,北京102206 [3]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》2022年第2期61-64,共4页Railway Engineering

基　　金：朔黄铁路发展有限责任公司科研项目(SHGF-15-41)。

摘　　要：对朔黄铁路弹条Ⅱ型扣件使用现状进行现场调研,发现弹条Ⅱ型扣件主要存在轨下垫板压溃或窜动,轨枕承轨槽磨损、弹条松弛、轨距挡板磨耗较大、挡板座压溃或断裂等问题。在保持既有Ⅲ型轨枕不更换的前提下对弹条Ⅱ型扣件主要部件进行强化设计,研制出SH-J型扣件。经过现场试铺、轨道结构动力性能测试和长期跟踪观测,SH-J型扣件各项测试数据均小于限值,具有一定安全储备;SH-J型扣件W3型弹条的弹程衰减速率小于弹条Ⅱ型扣件Ⅱ型弹条,SH-J型扣件轨下垫板静刚度变化率小于弹条Ⅱ型扣件橡胶垫板,可减少养护维修工作量。Based on the field investigation of the use status of typeⅡfastening system in Shuozhou-Huanghuagang railway,it is found that the typeⅡfastening system mainly have problems such as the crushing or movement of rail pad,the wear of sleeper rail bearing groove,the relaxation of clip,the large wear of gauge apron,the crushing or fracture of apron block and so on.On the premise that the existing typeⅢsleepers are not replaced,the main components of typeⅡfastening system are strengthened and designed,and SH-J fastening system are developed.After on-site trial paving,track structure dynamic performance test and long-term tracking observation,all test data of SH-J fastening system are less than the limit value and have a certain safety reserve.The deflection decrease rate of clip W3 of SH-J fastening system is less than that of clipⅡof typeⅡfastening system.The static stiffness change rate of rail pad of SH-J fastening system is less than that of typeⅡfastening system rubber pad,which can reduce the workload of maintenance.

关 键 词：重载铁路 扣件 现场试验 弹条 轨下垫板 强化措施 应用效果 

分 类 号：U213.53[交通运输工程—道路与铁道工程]