路基路面結(jié)構(gòu)動力特性試驗研究.pdf

1、西南交通大學(xué)碩士學(xué)位論文路基路面結(jié)構(gòu)動力特性試驗研究姓名：華政輝申請學(xué)位級別：碩士專業(yè)：建筑與土木工程指導(dǎo)教師：羅強黃關(guān)丁2002.3.1亙壹奎塑盔堂堡主塹塞生堂垡堡塞篁旦墮AbstractRoadtransportationplaysanimportantroleintheeconomyallaroundtheworldWiththeneedofheavyload，denseflowrateandhighspeed，thehigher

2、qualityoftheroadstructureisdemandedResearchresultsshowthatthesettlementsoftheroadstructuremainlycomefromtheconsolidationandtheaccumulativeresiduesettlementsunderthecyclicloadsExcessiveunevensettlementswillproducetheprema

3、turefailureonthepavementAndfewresearchesontheinteractionofpavementandsubgradehavebeendevelopedatpresentSoitisnecessarytodoalargescalemodelexperimentinordertesearchthedynamieresponseofthepavementandsubgradeundertrafficloa

4、dsThisthesispresentsaresearchprogramonpavementandsubgradestructureinthesecondphaseofGuangbeiSectionofNationalHighway108(BeijingtoKunming)Aful卜scalemodelexperimentthataccordingtotheconstructionsofGuangbeiSectionofNational

5、Highway108hasbeencarriedoutinlaboratorySandhagisusedtomakeaflexiblewallaroundthemodelinordertomaketheconditionoftheexperimentmorecloselytothetrueconditionThroughthestaricandstandardtrafficcyclicloads，theresponsesofthepav

6、ementandsubgradehavebeenattainedThestudiesontheseresponsessuchaselasticdeformations，accumulativesettlementsandstresshavebeenmadeunderthechangedcharactersofsubgrade，suchasmoisturecontent，relativecompactionofsubgradeTheres

7、ultsoftheexperimentsshowthatsuperfluousmoisturecontentincreasestheverticalstressandthesettlementsoftheconstructionunderthesimilarrelativecompactionAndunderthesimilarmoisturecontent，lowerrelativecompactionincreasesthevert

8、icalstressandthesettlementsoftheconstructioneitherComparingtheinfluencetothecOnstructionunderthechangingofthesetwofacts，wecanfindthatthechangingofmoisturecontenteffectstheconstructionmorethanthechangingrelativecompaction