基于钢垫梁的CRTSⅡ型板式无砟轨道支承层修复技术研究
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摘要
针对高速铁路CRTSⅡ型板式无砟轨道支承层伤损,以影响运输效率最小化、作业效率最大化为原则,提出钢轨切割、轨道板移出、砂浆清理、钢垫梁临时支撑、伤损支承层修复、轨道板复位和砂浆层灌注的作业方案。并以关键工装钢垫梁为研究对象,进行承载能力静载试验和有限元数值分析,论证该技术方案的可行性。在钢垫梁临时支撑阶段,采用视频监控及动力学监测技术手段,实时监控线路状态,保障施工安全。应用实践表明:该技术能在天窗时间内完成CRTSⅡ型板式无砟轨道支承层伤损修复,有效改善线路高低不平顺,恢复无砟轨道结构稳定性。
In order to minimize the influence of transportation efficiency and maximize the working efficiency,for the breakage of supporting layer of CRTSⅡ ballastless track bed in high-speed railway,this paper has put forward a new operation solution with the assistant of steel bearing beam.Its operation procedure is as follows:cut rail,move out the track slab,clean up the mortar layer,install the steel bearing beam,replace the supporting layer,move in the track slab,pour new mortar layer.As the key part of the technical solution,steel bearing beam's static load test of bearing capacity and numerical analysis of finite element have been designed for verifying its feasibility.Meanwhile,video monitoring and dynamic detection have been implemented when the steel bearing beam was in service stage,which aims to monitor the real-time state of rail track to keep the maintenance operation safety.Application practice shows that the new technique can finish the replacement of supporting layer in longitudinal ballastless track bed in maintennance-skylinght time,and also can improve longitudinal irregularity effectively and recover structure stability of ballastless track.
In order to minimize the influence of transportation efficiency and maximize the working efficiency,for the breakage of supporting layer of CRTSⅡ ballastless track bed in high-speed railway,this paper has put forward a new operation solution with the assistant of steel bearing beam.Its operation procedure is as follows:cut rail,move out the track slab,clean up the mortar layer,install the steel bearing beam,replace the supporting layer,move in the track slab,pour new mortar layer.As the key part of the technical solution,steel bearing beam's static load test of bearing capacity and numerical analysis of finite element have been designed for verifying its feasibility.Meanwhile,video monitoring and dynamic detection have been implemented when the steel bearing beam was in service stage,which aims to monitor the real-time state of rail track to keep the maintenance operation safety.Application practice shows that the new technique can finish the replacement of supporting layer in longitudinal ballastless track bed in maintennance-skylinght time,and also can improve longitudinal irregularity effectively and recover structure stability of ballastless track.
引文
[1]谭社会.高温条件CRTSⅡ型板式无砟轨道变形整治措施研究[J].铁道建筑,2016(5):23-27.TAN Shehui.Study on deformation treatment measures for CRTSⅡslab-type ballastless track in high temperature condition[J].Railway Engineering,2016(5):23-27.
[2]DAI Gonglian,SU Miao.Full-scale field experimental investigation on the interfacial shear capacity of continuous slab track structure[J].Archives of Civil and Mechanical Engineering,2016(16):485-493.
[3]ZHANG Tongwei,Francisco L L,CUI Yujun,et al.Development of a simple 2D model for railway track-bed mechanical behaviour based on field data[J].Soil Dynamics and Earthquake Engineering,2017(99):203-212.
[4]ZHU Shengyang,CAI Chengbiao.Interface damage and its effect on vibrations of slab track under temperature and vehicle dynamic loads[J].Non-Linear Mechanics,2014(58):222-232.
[5]吴斌,刘参,曾志平,等.CRTSⅡ型板式无砟轨道温度场特征研究[J].铁道工程学报,2016(3):29-33.WU Bin,LIU Can,ZENG Zhiping,et al.Research on the Temperature field characteristic of CRTSⅡslab ballastless track[J].Journal of Railway Engineering Society,2016(3):29-33.
[6]LOU Ping,ZHU Junpu,DAI Gonglian,et al.Experimental study on bridge-track system temperature actions for Chinese high-speed railway[J].Archives of Civil and Mechanical Engineering,2018(18):451-464.
[7]Hong W T,Kim S Y,Lee S J,et al.Strength and stiffness assessment of railway track substructures using crosshole-type dynamic cone penetrometer[J].Soil Dynamics and Earthquake Engineering,2017(100):88-97.
[8]孙旭,高阳,赵维刚,等.列车竖向荷载与CA砂浆离缝对CRTSⅡ型板式轨道开裂的影响分析[J].铁道科学与工程学报,2017(11):2290-2298.SUN Xu,GAO Yang,ZHAO Weigang.The study of influence on CRTSⅡslab track cracking caused by the vertical load of train and CA mortar void[J].Journal of Railway Science and Engineering,2017(11):2290-2298.
[9]周敏,戴公连,闫斌.温度作用下桥上CRTSⅡ型轨道离缝及变形分析[J].铁道科学与工程学报,2016,13(12):2341-2346.ZHOU Min,DAI Gonglian,YAN Bin.Analysis of gap and deformation of CRTSⅡtrack on bridges under temperature[J].Journal of Railway Science and Engineering,2016,13(12):2341-2346.
[10]赵国堂,高亮,赵磊,等.CRTSⅡ型板式无砟轨道板下离缝动力影响分析及运营评估[J].铁道学报,2017(1):1-10.ZHAO Guotang,GAO Liang,ZHAO Lei,et al.Analysis of dynamic effect of gap under CRTSⅡtrack slab and operation evaluation[J].Journal of the China Railway Society,2017(1):1-10.
[11]徐伟昌.高速铁路无砟轨道养护维修管理理念探究[J].中国铁路,2016(2):32-35.XU Weichang.Maintenance management concept on high speed railway ballastless track[J].China Railway,2016(2):32-35.
[12]孙九春.赵家沟大桥临时支架设计[J].世界桥梁,2015(1):11-17.SUN Jiuchun.Design of temporary support system for Zhaojiagou bridge[J].World Bridges,2015(1):11-17.
[13]周伟明.梁拱组合体系拱桥梁部拼装支架设计与关键施工技术[J].铁道建筑,2017(2):16-20.ZHOU Weiming.Design and key construction technologies of assembly scaffolding for arch bridge girder of girder-arch combination system[J].Railway Engineering,2017(2):16-20.
[14]TB 10621-2014,高速铁路设计规范[S].TB 10621-2014,Design specification of high speed railway[S].
[15]TG/GW 115-2012,高速铁路无砟轨道线路维修规则[S].TG/GW 115-2012,Maintenance rules for high speed railway ballastless track[S].
[2]DAI Gonglian,SU Miao.Full-scale field experimental investigation on the interfacial shear capacity of continuous slab track structure[J].Archives of Civil and Mechanical Engineering,2016(16):485-493.
[3]ZHANG Tongwei,Francisco L L,CUI Yujun,et al.Development of a simple 2D model for railway track-bed mechanical behaviour based on field data[J].Soil Dynamics and Earthquake Engineering,2017(99):203-212.
[4]ZHU Shengyang,CAI Chengbiao.Interface damage and its effect on vibrations of slab track under temperature and vehicle dynamic loads[J].Non-Linear Mechanics,2014(58):222-232.
[5]吴斌,刘参,曾志平,等.CRTSⅡ型板式无砟轨道温度场特征研究[J].铁道工程学报,2016(3):29-33.WU Bin,LIU Can,ZENG Zhiping,et al.Research on the Temperature field characteristic of CRTSⅡslab ballastless track[J].Journal of Railway Engineering Society,2016(3):29-33.
[6]LOU Ping,ZHU Junpu,DAI Gonglian,et al.Experimental study on bridge-track system temperature actions for Chinese high-speed railway[J].Archives of Civil and Mechanical Engineering,2018(18):451-464.
[7]Hong W T,Kim S Y,Lee S J,et al.Strength and stiffness assessment of railway track substructures using crosshole-type dynamic cone penetrometer[J].Soil Dynamics and Earthquake Engineering,2017(100):88-97.
[8]孙旭,高阳,赵维刚,等.列车竖向荷载与CA砂浆离缝对CRTSⅡ型板式轨道开裂的影响分析[J].铁道科学与工程学报,2017(11):2290-2298.SUN Xu,GAO Yang,ZHAO Weigang.The study of influence on CRTSⅡslab track cracking caused by the vertical load of train and CA mortar void[J].Journal of Railway Science and Engineering,2017(11):2290-2298.
[9]周敏,戴公连,闫斌.温度作用下桥上CRTSⅡ型轨道离缝及变形分析[J].铁道科学与工程学报,2016,13(12):2341-2346.ZHOU Min,DAI Gonglian,YAN Bin.Analysis of gap and deformation of CRTSⅡtrack on bridges under temperature[J].Journal of Railway Science and Engineering,2016,13(12):2341-2346.
[10]赵国堂,高亮,赵磊,等.CRTSⅡ型板式无砟轨道板下离缝动力影响分析及运营评估[J].铁道学报,2017(1):1-10.ZHAO Guotang,GAO Liang,ZHAO Lei,et al.Analysis of dynamic effect of gap under CRTSⅡtrack slab and operation evaluation[J].Journal of the China Railway Society,2017(1):1-10.
[11]徐伟昌.高速铁路无砟轨道养护维修管理理念探究[J].中国铁路,2016(2):32-35.XU Weichang.Maintenance management concept on high speed railway ballastless track[J].China Railway,2016(2):32-35.
[12]孙九春.赵家沟大桥临时支架设计[J].世界桥梁,2015(1):11-17.SUN Jiuchun.Design of temporary support system for Zhaojiagou bridge[J].World Bridges,2015(1):11-17.
[13]周伟明.梁拱组合体系拱桥梁部拼装支架设计与关键施工技术[J].铁道建筑,2017(2):16-20.ZHOU Weiming.Design and key construction technologies of assembly scaffolding for arch bridge girder of girder-arch combination system[J].Railway Engineering,2017(2):16-20.
[14]TB 10621-2014,高速铁路设计规范[S].TB 10621-2014,Design specification of high speed railway[S].
[15]TG/GW 115-2012,高速铁路无砟轨道线路维修规则[S].TG/GW 115-2012,Maintenance rules for high speed railway ballastless track[S].