城市燃?xì)夤艿朗Ｓ鄰?qiáng)度和剩余壽命評(píng)價(jià).pdf

1、華中科技大學(xué)碩士學(xué)位論文城市燃?xì)夤艿朗Ｓ鄰?qiáng)度和剩余壽命評(píng)價(jià)姓名：徐佳佳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：供熱、供燃?xì)?、通風(fēng)與空調(diào)工程指導(dǎo)教師：李帆20061106IIAbstractInthisdissertationthetheymethodofsafetyengineeringwasapplicatedtothemanagementofcitygaspipelinesafety.Buildtheremainingstrengthlifeass

2、essmentmethodsofthecitygaspipeline.Thispaperanalyzesthecurrentprojectburiedsteelpipelinedetectionmethodstheprinciplesoftechnicalfeatures.Combiningtheacteristicsofcitygaspipelineacombinationofvariousmethodsusedtoimprovede

3、tectionaccuracy.BasedontheanalysisofsoilerosionthemaximumdepthofcrosionpitsthedevelopmentofpipelineCrosionfactswasdividedintotimeenvironmentalfact.Usedtheartificialnervewktoestablishthepipelinecroderankthemostgreatlycrod

4、epitdepthfecastmodel.ToovercomethelimitationdisadvantageofexistedassessmentmethodtheFiniteElementAnalysiswasperfmedoncrodedsubmarinepipelinetoobtainmeaccuratesolutioninwhichtheelasticplasticmodelconsideredthenonlinearofG

5、eometrythenonlinearofmaterialwasused.ThecomparisonbetweenresultofFiniteElementAnalysisthatofexistedcriteriashowsthattheresidualstrengthofcrodedpipelinepredictedbytheFEMisgreaterthanthatpredictedbyexistedcriteriahasagooda

6、ccuracy.Atthesametimetheanalysisalsoverifiedtheconservationofexistedcriteria.Theresultcanprovidereferenceonengineeringpractice.Evaluationoftheremaininglifeisakeycomponentofpipelineintegrity.Thispaperassessmentcrosionreli