關(guān)于混凝土結(jié)構(gòu)耐久性設(shè)計的若干問題研究.pdf

1、華中科技大學(xué)博士學(xué)位論文關(guān)于混凝土結(jié)構(gòu)耐久性設(shè)計的若干問題研究姓名：周錫武申請學(xué)位級別：博士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：衛(wèi)軍20080603IIAbstractDurabilityproblemsofreinfcedconcretestructuresarebeingmemeurgentnow.Toomuchmoneyhavetobespenttorepairdamagedstructures.InChinamassivecivilwksa

2、reproceedingnow.Toavoiddurabilityproblemsthesameasthatindeveopedcontriesmestudiesshallbeconductedtopresentaresonabledurabilitydesignsystem.Basedonexistingresearchestheauthconductedfullresearchesonthedurabilitydesignsyste

3、mfreinfcedconcretestructure.Themainwksareasbelow:1.Thedamageconceptfconcretestructuresunderbothenvironmentalloadeffectionsisdefinedadurabilitydesignsystemisestablished.Thisnewsystemaimsatthecontrolofultimatedamagestateof

4、concreteincludingenvironmentaleffectionlifedesignstatuscontrolmaterialdesignrepairabledesignconstitutiondesignmonitingdesign.Besidesprofoundstudiesonlifedesignstatuscontrolrepairabledesignarecarriedout.2.Damageisthemainp

5、erfmanceindexfconcretedurability.Basedonthisconceptanalysisofserviceabilitylimitstatedurabilitylimitstatetestresultsthelimitstatecanbedeterminedaccdingtodifferentdamagestate.3.Basedonthethreelimitstatesindamagefmthereaso

6、nabilityofusinglawequationflifedesignofconcretestructuresisdiscussed.4.Theantimeasurestowardsdamageextentionisstudieddesignmethodisfollowedaimingatdifferentdamagelimitstate.Designmethodanalysisequationfdamageinhibitionar

7、epresentedcrespondingwithFRPstirrupmethods.5.Basedonwholelifephaseddesignideafconcretestrucutrerepairabledesignmethodfconcretestructuredurabilityispresented.Additionalsafetyfactisattachedtothecalculationfmula.Factvaluesf