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《地裂缝对高速铁路桥梁影响的模型试验分析-(5562)》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、AbstractThegroundfissurehazardshasseriouslythreatenedtheexpressrailwayconstructionofourcounty.ThebackgroundofthispaperisDatong-Xi’anexpressrailway,whichwillconnectedShanxiandShaanxiprovincesandpassedthroughthe‘FenWeigarbensystem’.Thegarbensystemisfam
2、ousforthedevelopmentoftypicalactivefaultsandgroundfissures,thuswillthreatentheconstructionofDatong-Xi’anexpressrailway.However,therearealittleresearchabouttheimpactofgroundfissuretoexpressrailwaybridgesinourcountyatpresent.Therefore,theinfluencemecha
3、nismresearchofgroundfissuretoexpressrailwayinthispaperisnotonlyverymeaningful,butalsocanbeanimportantreferencebasisforsafetyconstruction.Firstly,thepaperbrieflydescripttheregiongeologyalongtheDatong-Xi’anexpressrailway.Secondly,discussthebridgedeform
4、ationbehavior,failuremodeandinfluencescopewhiletheexpressrailwayobliquecrossingthegroundfissurebeltwith45°inthe1：20measuringscalemodeltest,andtakingtheShuixiugroundfissureasthemodelsample.Last,usingnumericalsimulationsoftwareMIDAS/GTStocalculatetheex
5、pressrailwayobliquecrossingthegroundfissurebeltwith45°,comparethenumericalsimulationresultstothemodeltestresultsandoffersomemitigationmeasurestoexpressrailwaybridgescrossinggroundfissure.Theresultsofthetwoplanscanprovideapowerfulscientifictheoretical
6、basisofdesignandconstructionsafetytoDatong-Xi’anexpressrailway.Themainsubjectsdrawnfromthepaperareasfollows：(1)Thegroundfissuremainlyaffectexpressrailwaybridgestructurewhichcrossingit,andboxgirdersandrailshaveobviousstrains,otherpartsofexpressrailway
7、bridgestructurehavelittlechanges;(2)Thefailureareaofbridgemodelare113cmofhangingsideand82cmofheadingside,andtheinfluencescopeare147cmofhangingsideand82cmofheadingside,thus,thefortifiedrangeis229cm;(3)Thebridgespaninthetestisfeasibleandcanbeoptimizedt
8、oreachthedisasterreliefbyoptimizationthereinforcedconcretepiles,increasingthebearingplatformandbridgepiersize,strengthentheCollapse-proofdesignandimprovingtherationofconcrete;(4)Establishmonitoringwarningsystemtolong-termobservethebridgedeformationan
