橫觀各向同性地基與路面相互作用性狀解析分析.pdf

1、浙江大學(xué)碩士學(xué)位論文橫觀各向同性地基與路面相互作用性狀解析分析姓名：李沛豪申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：巖土工程指導(dǎo)教師：朱向榮20040201浙江大學(xué)碩士學(xué)位論文橫觀各向同性地基與路面相互作用性狀解析分析李沛豪2004年2月ABSTRACT1’hepavementsystemwiththecomplicatedstructureisalwaysconsideredasalargesurfacelayerbearingontheinfinit

2、elydeepfoundationDuetocomplexityandvarietyofmater[atsandstochasticuncertaintyofloadboundarycondition，manymathematicandmechanicproblemswilIoccurinobtainingstressanddisplacementsoIutionsofthepavementsystemByfar，twohypothes

3、esonfoundationmodelhasbeenwidelyadopted：oneisWinlderfoundationmodel舊foundationmodel)thatfoundationresponsemodulusKisusedtocharacterizefoundationrigid；theotheriselastichalfspacefoundationmodel忸foundationmodel)thatelasticm

4、odulusE0andPoissonratio∥0areusedtocharacterizefoundationrigidInthepresentpaperEfoundationmodelisadoptedtosimulalehalfspaceelasticfoundationbodyInrecentyears協(xié)eoriesofelasticfoundationandlayerselasticbodysystemhavebeenwide

5、lyappliedandperfectlydeveloped，butthetheoriesoftenconsiderthemediumascontinuous，elastichomogeneousisotropyandsubmittingtosmalldeformation6，pothesis，andtheanisotropyof也emater[alhasnotbeenintroduced。Inthepaperconsolidation

6、effectsonstressanddisplacementdistributtonsaren’ttakenintoconsiderationduetosupposingthatfoundationsoilconsolidationhascompletedaftersurchargingpreloadingBasedontheinherentanisotropyandinducedanisotropyoffoundationsoilbo

7、dytransverselyisotropicelasticconstitutiverelationsareadoptedtosimulatehalfspaceelasticfoundationbodyTherelationsbetweendisplacementanddisplacementfunctionareproposedbyextendingLovedisplacementfunctiontotransverselyisotr

8、opicelastichalfspaceThegeneralstressanddisplacementsolutionsofnonaxisymmetricproblemsareobtainedbyttankeltransform，thenthetheoreticalsolutionsofstressanddisplacementintransverselyisotropicelastichalfspaceunderarbitrarylo

9、adingarcputforwardbyintroducingboundaryconditionsThehomogeneouselastichalfspacesolutionsevolvedfrONthetheoreticalsolutionsinthePaDerareinaccordwithclass[calonesSolutionsunderhorizontalandverticalloadingcanbeobtainedrespe

10、ctivelybyspecializingarbitraryloading；byanalogy、solutionsunderotherloadingcanbealsoobtainedInthepaperthehalfpacemodelwiththesurfacelayerbearinginfinitefoundationisadoptedtosimulatepavementsystemThefollowingassumptionsare

11、introduced：foundationsoiliselastic；displacementoftheinterfacebetweensurfacelayerandfoundationiscompletelycontinuous；noshearstressOccursontheinterfacebetweentheSill“facelayerandthefoundation，namelynofrictionforceAccording

12、toactualperformanceofrigidandflexiblesurfaceIayervisco—elasticmodeIandelasticplatesmodelareadoptedtespectivelysimulateflexibleandrigidsurface，andthefoundationisconsideredastransversalisotropicelasticbody。Stressanddisplac

13、ementdistributionsofthefoundationandthesurfacelayerunderstaticloadingareanalyzedbyconsideringtheirinteraction，andsomevaluableconclusionsareobtainedKeywords：Transverselyisotropicbody；Nonaxisymmetricproblem；Hankeltransform