无支座连续刚构轨道结构受力分析与温度跨度分析

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1、万方数据ABSTRACT——————————————————————一—————————————————————一一ABSTRACTlJrbanrailtransitinChinahasbeenthroughatremendousdevelopment·Asoneofmeroutelayingmode，viaductdevelopsrapidlybothinChinaandabroad,duetoitslowconstmctioncost，highspeedofconstruction，goodadaptabilityof。outelme·Durmgtheconstmctionofvi

2、aductinChinaandabroad，bridgeswithstandardspanaremostlYused,exceDtforafewspecialcontrolnodes．Traditionally,structureswhichcommonbndge8谢thme(1iumandsmallspanusearesimplesupportedbeamandcontlnuousbe锄·Connnuousrigidfr锄eisapier-beamconsolidationsystemdeveloPeQfromcontlnuousbe锄，combiningstressingfeatl

3、lresofcontinuousbeamandt。shapedri酉d仔ame·withgoodstructuralintegritNexcellentseismicperformance，greattorslonpotentlal，ContinuousrigidframehasbeenwildlyappliedinChina·Thisarticlefocusesonanimprovedcontinuousrigidframe，pre-stressedconcretecontinuousrigidstmctⅥewithoutsupports．Therearenosupportsinth

4、isbndgemode·Bomsidepierandcentralpierconsolidatewithgirder,formingrigid矗锄e·。Itansve‘8erestraintofcontiIluousrigidframepierisweaker,andthebfidgeiseasllyt吼stedordisDlacedllIlderthecircumstanceofunbalancedtransverseload·Whencontlnuousn91d矗ame砒houtsupportsislaidoutcontinuouslyandcompactly,unbal趾cedl

5、oadgeneratedbyvehiclcweightcausesbeamtransverseindifferentdi。ec‘ion8，牡cel唧nngthehorizontaldistortionofrmlandreducingsecurityoftrainoperation·SuchresultsarecauSedbydouble．waylineonthebridgeandthatadjacentsteelunit8donotsh骶ep1盯s·Withthebackgro吼dofone．armedpierpre。stressedconcretecontlnuou8nglds仃uc

6、tL鹏wi恤utsupportsadoptedbyGuangzhouelevatedmetroline，thi3artlc把stressesonthefollowingrese砌·．．，1．This口砒in仃oducedcontinul)usrigidstructurewithoutsupports，comparedmm仃aditionalcontinuousrigidstructure，continuousrigidstructurewitlloutsupport81seasierto栅删n，havelowermaintenancecostandhigherstructurestre

7、ssemclency_Also．continuousrigidstructurewithoutsupportsshowsbeaerseismicperforIllancea工1dberterappear髓ce．Theapplicationsituationofcontinuousrigidstmctu聆wimoutsupportsisinvestigated，andthetrackstructurerail，fastenersandcon枷ct