水電站配水環(huán)管結構非線性分析與設計優(yōu)化.pdf

1、大連理工大學碩士學位論文水電站配水環(huán)管結構非線性分析與設計優(yōu)化姓名：馬開彬申請學位級別：碩士專業(yè)：水利水電工程指導教師：馬震岳20070601大連理工大學碩士學位論文NonlinearAnalysisandDesignOptimizationforDistributorStructureinHydropowerStationAbstractHydropowerhouse’sconstructionofpeltonturbineappli

2、edinhi曲waterheaddoesntneedgiantdamFluxforgenerateelectricityisalsosmallerSotakinginaccountofEnvironmentalprotection，itprevailsagainsthydropowerstationThedevelopmenttendencyofpeltonturbineistohJ【曲waterheadandbigcapacityTr

3、aditionalhorizontalturbinewillbereplacedbyverticalunitwithmorenozzlesbecauseofitssimplestructureandeasyoperrationDistributoristheinportantovercurrentassemblyoftheimpluseturbineDistributorandthenozzlesteelofpeltonturbinem

4、uchdifferentfromnormalspiralcaseiscomplexinstructureandthestressandstrainHowtoreasonableoptimizeanddesignisthepivotalproblemofsafeoperationforHydropowerstationSoweshouldtakemuchdeepstudytotheloadconditionsofthedistributo

5、rstructureTherefore，thispaperisfocusedontheabovequestionsandpredecessors’experienceBasedonAllaiKhhwarProject，thefollowingaspectsaboutdistributorstructureofpressureholdedarestudied：(1)Comparingtheoperatingconditionofunits

6、，stressanddisplacementstateofthedistributorandsurroundingconcreteunderdifferentwaterpressure，soastooptimizethepressurevalueofthedistributorinHydropowerStationwhenconcreteisplaced(2)Basingonthepressureholdedselected，study

7、ingstressdistributionofthedistributorandreinforcement，crackingdevelopmentofsurroundingconcreteandthemaxcrackwidthbymeansof3Dnon1inearfiniteelementanalysistoobtaintheinfluenceregulation，Andalsothiscanobtainfeasiblereinfor

8、cementamountandarrangement(3)Basingontherationalrebarratioselected，studyingtheinfectiontothebearingratio，distributionmadexpansionofcracksindifferentpressureholdedAndalsocheckingtherationalityofthepressureholdedselected(4

9、)Loadscausedbyvarietyoftemperaturetakeimportantfountionthatcan’tbeneglectCalculatingthethermalstressandstrainofthedistributorandsurroundingconcreteunderthetemperatureload，tostudytheeffectsundertemperatureload，andtheeffec