岩土工程专业翻译英文原文和译文

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1、原作题目:毕业设计…外文翻译FailurePropertiesofFracturedRockMassesasAnisotropicHomogenizedMedia均质各向异性裂隙岩体的破坏特性专业：丄木工程姓名：吴雄指导教师：吴雄志河北工程大学土木工程学院2012年5月21日FailurePropertiesofFracturedRockMassesasAnisotropicHomogenizedMediaIntroductionItiscommonlyacknowledgedthatrockmassesalwaysdisplaydiscontinuoussurfacesofvariou

2、ssizesandorientations,usuallyreferredtoasfracturesorjoints.Sincethelatterhavemuchpoorermechanicalcharacteristicsthantherockmaterial,theyplayadecisiveroleintheoverallbehaviorofrockstructures,whosedeformationaswellasfailurepatternsaremainlygovernedbythoseofthejoints-Itfollowsthat,fromageomechanical

3、engineeringstandpoint,designmethodsofstructuresinvolvingjointedrockmasses,mustabsolutelyaccountforsuch"weakness"surfacesintheiranalysis.Themoststraightforwardwayofdealingwiththissituationistotreatthejointedrockmassasanassemblageofpiecesofintactrockmaterialinmutualinteractionthroughtheseparatingjo

4、intinterfaces.Manydesign-orientedmethodsrelatingtothiskindofapproachhavebeendevelopedinthepastdecades,amongthem,thewell-known"blocktheory/5whichattemptstoidentifypotentiallyunstablelumpsofrockfromgeometricalandkinematicalconsiderations(GoodmanandShi1985;Warburton1987;Goodman1995).Oneshouldalsoqu

5、otethewidelyuseddistinctelementmethod,originatingfromtheworksofCundallandcoauthors(CundallandStrack1979;Cundall1988),whichmakesuseofanexplicftnite-differencenumericalschemeforcomputingthedisplacementsoftheblocksconsideredasrigidordeformablebodies.Inthiscontext,attentionisprimarilyfocusedontheform

6、ulationofrealisticmodelsfordescribingthejointbehavio匚Sincethepreviouslymentioneddirectapproachisbecominghighlycomplex,andthennumericallyuntractable,assoonasaverylargenumberofblocksisinvolved,itseemsadvisabletolookforalternativemethodssuchasthosederivedfromtheconceptofhomogenization.Actually,sucha

7、conceptisalreadypartiallyconveyedinanempiricalfashionbythefamousHoekandBrowrfscriterion(HoekandBrown1980;Hoek1983).Itstemsfromtheintuitiveideathatfromamacroscopicpointofview,arockmassintersectedbyaregularnetworkofjoint