高速铁路大跨度钢桁梁斜拉桥轨道型式研究

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1、高速铁路大跨度钢桁梁斜拉桥轨道型式研究林红松杨吉忠颜华(中铁二院工程集团有限责任公司'成都610031)摘要：研究目的：在总结铁路钢桥轨道结构应用的基础上，根据高速铁路大跨度钢桁梁斜拉桥和轨道结构特点研究提岀轨道结构选型原则，并对比分析有咋轨道台成树脂枕轨道板式无咋轨道、双块式无砰轨道的适应性提出轨道结构选型建议。研究结论：(1)大跨度钢桁梁斜拉桥轨道结构选型应从轨道结构特性、施工性潍修性综合经济性及环境性等方面综合考虑;(2)有砰轨道结构较为成熟但结构自重大养护维修工作量大，从寿命周期成本考虑

2、，综合性能不高;双块式无昨轨道结构简单自重较轻但•施工顺序对轨道线形有较大影响，对施工工艺要求高；(3)板式无昨轨道自重较轻，对钢桁梁桥适应性良好，且有一定的应用经验；合成树脂枕轨道结构简单、自重轻冬隹修工作量少，对钢桥适应性强建议在高速铁路人跨度钢桁梁斜拉桥上硏究采用合成树脂轨枕轨道和板式无祚轨道;(4)本文对高速铁路大跨度钢桁梁斜拉桥轨道结构选型有一定参考意义。矣键词:高速铁路;轨道结构;钢桥:斜拉桥中图分类号:U213文献标识码:AResearchontheTrackTypeofLarge

3、SpanSteelTrussCableStayedBridgeforHighSpeedRailwayLINIlong-song5YANGJi-zhong5YANIlua(ChinaRailwayEiyuanEngineeringGroupCo*LtdChengdu?Sichuan610031*China)Abstract:Researchpurposes:Basedonsummarizingtheapplicationofrailwaytrackforsteelbridges、someprinc

4、iplesoftracktypeselectionwereproposedaccordingtostmcturalcharacteristicsoftrackandhighspeedrailwaylargespansteeltrusscablestayedbridge*Withtheproposedprinciplesoftrackselection‘ballasttrack、syntheticresinsleepertrack、slabballastlesstrackandbi-blocktr

5、ackwereanalyzedandcompared、andrecommendationsfortracktypeselectionwereproposed・Researchconclusions:(1)Characteristicsofdifferenttrackstructures、construction、maintenance、comprehensiveeconomyandenvironmentshouldbetakenintoaccountwhenselectingtrackforhi

6、ghspeedrailwaylargespansteeltmsscablestayedbridge*(2)Ballastedtrackismorematurebutitsweightisgreatermaintenanceworkloadisheavierandinconsiderationoflifetimecyclecost，comprehensiveperfoimanceofballastedtrackispoorer*Forbi-blocktrack，itsadvantagesinclu

7、desimplestructure‘lighterweightetc*‘butithasagreaterimpactonthetrackalignment、whichmakeshigherdemandsforconstmctiontechnology(3)Slabballastlesstrackhaslighterweight，goodadaptabilityforsteeltrussbridge,andhasbeenappliedinoverseasrailwaysteelbridge*Syn

8、theticresinsleepertrackhassimplestructure1lighterweight1lessmaintenanceandgoodadaptabilityforsteeltrussbridge*Sosyntheticresinsleepertrackandslabballastlesstrackareproposedforhighspeedrailwaylargespansteeltrusscablestayedbridge*(4)Theproposalinthispa