水流中土工包沉落模型試驗與土工包護岸數(shù)值分析

1、河海大學碩士學位論文水流中土工包沉落模型試驗與土工包護岸數(shù)值分析姓名：楊素勤申請學位級別：碩士專業(yè)：水工結(jié)構(gòu)工程指導教師：束一鳴20070401AbstractBankcollapseisoneofthemostimportantproblemtostudyinfloodcontrolandreductionThebottomoftheslopeisscouredandthentheotherscollapseintotheriverT

2、heflowgoesondestroyingtheexistingbankforcingtheembankmenttomovebackErosionanddepositionmakesomeriversinstableThephenomenonofbankcollapseisstillgeneralandserioustherearetwokindsofmeasures：makingtheriversteadyandcontrollin

3、gtheflowofgroundwaterGeocontalnersa∞r(nóng)elativelynewengineeringsystemsThetechnologyCallpreventthebankfromwatereffectivelyandmaketheriversteadytoimprovethesafetyoftheembankmentGeocontainersarecostcompetitiveforlargeprojectan

4、dstableinstructurecomparetothetraditionalprotectingmethodsincoastprotectingprojectsInthispapertheeffectsofgeocontainersontheprotecteddykeofmahBunderthechangingwaterlevelsarestudiedbyFLAC3DThemainworkthispaperdoaretheseli

5、kebelow：1、ThispaperintroducedThemechanismofbankcollapseandreviewedthepredictionmethodsforbankprotection，andthestudyofgeocontalnerathomeandabroad2、Modeltestsageperformedonascaleof1：60inthebroadrectangulartroughThroughexpe

6、rimentsofdumpinggeocontainersinthefloatingwater，SomesettlingcharacteristicsofsettlingdistanceundertheconditionofdifferentvelocityanddepthofthewaterarestudiedFromtheexperimentdatasandthedimensionsofphysicalquantities，form

7、ulaealedenved，andtheresultswillbeguidefortheconstructionofgeocontalners3、FLAC3Disathreedimensionalexplicitfinitedifferenceprogramandthechaptersinvolvedinthepaperisintroduced4、TheengineeringexampleisanalyzedTheeffectsofge

8、ocontainersontheprotecteddykeofmahuunderthechangingwaterlevelsarestudiedbyFLAC3DNumericalsimulationmodelsarebuildTheverticalandhorizontaldisplacements、principalstresses、blockstates、shearstressrate、safetyfactorofreducedst

9、rength(Fos)ofthedykeareanalysedbeforeandaftertakingthemeasureofgeocontainertechnologyatthebottomoftheslopeareanalysedandcomparedTheseresultsshowthegeocontainertechnologycanimprovethesafetyoftheslopelargelyandthecollapsec