在用混凝土橋梁構(gòu)件耐久性指標(biāo)體系的研究.pdf

1、重慶交通大學(xué)碩士學(xué)位論文在用混凝土橋梁構(gòu)件耐久性指標(biāo)體系的研究姓名：高宇申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：橋梁與隧道工程指導(dǎo)教師：吳海軍20120412ABSTRACTRecentyears，basedonpracticeofbridgeengineeringandresearchonstructuraldurabilityofconcretebridge，Thelackingofdurabilityassessmenttechnologybas

2、edoncomponentisthedirectreasonforconcretebridgedurabilitybecomesmoreseriousAftertheindexsystemfordurabilityevaluationbeingstudiedthroughtheexistingconcretebridgecomponents，thedurabilityevaluationmethodhasbeenputforwardba

3、sedOllthecomponentsThemethodnotonlycanrevealthepotentialdangerandmakedecisiontimelytomaintainordismantletopreventmajoraccidents，butalsocanbedirectlyusedtoguidestructuredesigntoobtaingreateconomicandsocialbenefitsRelyonth

4、eproject，thispaperhasdonetheresearchasfollows：(1)Basedontheresearchresultsdomesticandabroad，thispaperstudiedstructureofreinforcedconcretebridge’Sdeteriorationmechanismanditsmodel，italsosummarizedtherelationshipbetweenthe

5、factorswhichinfluencethedurability(2)Throughtheanalysisandresearchondurabilityparametersandexperimentresultofconcretecomponentinandabroad，durabilityevaluationindexforinserviceconcretebridgeisgivenDurabilityevaluationinde

6、xlimitisproposed、析thfullconsiderationofstresscharacteristics，structuralfactorandpartialenvironmentalfactorThispaperalsoestablishthedurabilityindexsystemindifferentenvironment(3)Basedonseveralpossibilitiesoftouchthelimitv

7、alue，thispaperputforwardsingleindexevaluationandmultipleindexesevaluationtoevaluatethedurabilityofconcreteProposedusingrelativevalueofbearingcapacitytobetheevaluatingindex，analyzedtherelationshipbetweensteelcorrosionconc

8、retecrackspallingandbearingcapacityDerivedaftercorrosionbendingcapacityformulaoftypicalsectionanddiscussedthequantitativerelationshipbetweencorrosionrateandreductionofcapacityundertwocalculationmodelsThroughtheanalysisof

9、lawofcalculationthispaperproposedtherangeofcapacitydecreaseinmultipleindexesevaluationAtlastappliedsingleindexevaluationtoevaluateabridge，theevaluatingresultsmatchwell晰tllthetest，itprovedthemethodisfeasibleKEYWORDS：concr