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1、北京交通大學(xué)碩士學(xué)位論文梯形軌枕對(duì)軌道交通高架橋梁的減振作用分析姓名：鄒永偉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：夏禾20061201jb巒鑾道厶鱟亟±堂僮論塞△墾SI墨△￡王ABSTRACTABSTRACT：Withtherapiddevelopmentofrailtransitsystem，theenvironmentalvibrationsinducedbyrunningtrainshavebroughttotheattentionsofpeople．ResearchersinChinaandabroadhavestudiedankindso
2、freductionm矗dsute8．FloatingladdertrackiSoneofthem．Firstly,inthispaper,thecurrentdevelopmentofcityrailtransitandtheresearchhistoryofenvironmentvibrationaresummarized．ThesbmctIlrccharacteristicsoffloatingladdertrackaleintroduced．Secondly,byestablishingallanalysismodeloftraill·bridgei
3、nteractionsystem，thedynamicresponsesofviaductbridgewithladdertrackandthedynamicresponsesofviaductbridgewithordinarynon-ballastedtrackalecalculated．Thentheladdertrack’seffectonreducingvibrationofviaductbridgeisanalyzed．Lastly,theladdertrackisstudiedbylaboratoryexperiment．拍echaracter
4、isticsoftheladdertrackarewellunderstoodthroughalaboratoryexperiment．Whendynamicloadisloadedonthetopoftheladdertrack,thevibrationtransmitsflomtherailtothetrackbaseandthevibrationintensityattenuatesclearlyinthecourseoftransmission．Theoreticalanalysisandexperimentprovesthatladdertrack
5、hasgoodvibrationreductioncharacteristic．Ascomparedtoordinarynon-ballastedtrack,laddertrack'svibrationreductioneffectismainlyembodiedinverticalaccelerationofbridge,whilethateffectonverticaldisplacementofbridgeisverysmall．Laddertrackhashardlyanyeffect011lateraldynamicresponseofbridge
6、anddynamicresponseoftrain．耽elfigherthetrainspeedis，themoreobvioustheladdertrack'svibrationreductioneffectis；thesmallerthematelasticityofladdertrackis．themoreobvionstheladdertrack’svibrationreductioneffectis．KEYWORDS：railtransit；viaductbridge；environmentalvibration；floatingladdertra
7、ck；train-bridgesystem；vibrationreductionmeasureCLASSN0：U448+13致謝本論文的工作是在我的導(dǎo)師夏禾教授的悉心指導(dǎo)下完成的。在兩年半的研究生學(xué)習(xí)生活中，夏禾教授給予了無微不至的關(guān)懷。在整個(gè)論文選題，具體分析過程中，夏老師親自指導(dǎo)，及時(shí)解決問題。夏老師嚴(yán)謹(jǐn)?shù)闹螌W(xué)態(tài)度、精益求精的工作精神、嚴(yán)于律己、寬于待人的優(yōu)良作風(fēng)都將影響我一生，使我受益匪淺，終生難忘，在此，謹(jǐn)向夏老師致以最衷心的感謝和崇高的敬意!日本鐵道綜研株式會(huì)社的齊琳老師提供了梯形軌枕相關(guān)的資料和數(shù)據(jù)，齊琳老師和藹可親，工作嚴(yán)謹(jǐn)，學(xué)術(shù)造詣?lì)H深，感謝
8、齊老師對(duì)我的幫助和指導(dǎo)!北京交通大學(xué)土建學(xué)院的張楠副
