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1、高速鐵路大跨度鋼桁梁斜拉橋軌道型式研究林紅松楊吉忠顏華(中鐵二院工程集團有限責任公司'成都610031)摘要：研究目的：在總結(jié)鐵路鋼橋軌道結(jié)構(gòu)應用的基礎上，根據(jù)高速鐵路大跨度鋼桁梁斜拉橋和軌道結(jié)構(gòu)特點研究提岀軌道結(jié)構(gòu)選型原則，并對比分析有咋軌道臺成樹脂枕軌道板式無咋軌道、雙塊式無砰軌道的適應性提出軌道結(jié)構(gòu)選型建議。研究結(jié)論：(1)大跨度鋼桁梁斜拉橋軌道結(jié)構(gòu)選型應從軌道結(jié)構(gòu)特性、施工性濰修性綜合經(jīng)濟性及環(huán)境性等方面綜合考慮;(2)有砰軌道結(jié)構(gòu)較為成熟但結(jié)構(gòu)自重大養(yǎng)護維修工作量大，從壽命周期成本考慮
2、，綜合性能不高;雙塊式無昨軌道結(jié)構(gòu)簡單自重較輕但?施工順序?qū)壍谰€形有較大影響，對施工工藝要求高；(3)板式無昨軌道自重較輕，對鋼桁梁橋適應性良好，且有一定的應用經(jīng)驗；合成樹脂枕軌道結(jié)構(gòu)簡單、自重輕冬隹修工作量少，對鋼橋適應性強建議在高速鐵路人跨度鋼桁梁斜拉橋上硏究采用合成樹脂軌枕軌道和板式無祚軌道;(4)本文對高速鐵路大跨度鋼桁梁斜拉橋軌道結(jié)構(gòu)選型有一定參考意義。矣鍵詞:高速鐵路;軌道結(jié)構(gòu);鋼橋:斜拉橋中圖分類號:U213文獻標識碼: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
