考慮橫縫影響的拱壩地震損傷分析與抗震設(shè)計.pdf

1、浙江大學(xué)建筑工程學(xué)院碩士學(xué)位論文考慮橫縫影響的拱壩地震損傷分析與抗震設(shè)計姓名：徐軼慷申請學(xué)位級別：碩士專業(yè)：水工結(jié)構(gòu)工程指導(dǎo)教師：蔣建群20080530AbstractWiththedevelopmentofeconomyabatchofarchdamswithheightsofmorethan300mistobeconstructedinwesternregionsofChinaThearchdamsarelocatedinhighs

2、eismicintensityregionswithhighmountains，deepvalleysandsteepslopessurrounded，whichposesnewchallengestotheaseismicdesignofarchdamintheseregionsNotonlyshouldthearchdammeettheaseismicsafetyrequirementssubjecttocommonandoccas

3、ionalearthquake，butthattheevaluationofitssafetyafterrareearthquakeshouldbegivenenoughattentionbecauseitisofparamountimportancetoensurethesafetyoflivesandpropertiesinthedownriverregionBasedonthetwo—stageaseismicdesign，the

4、archdamwillbehavenonlinearlyandaccumulatedamageunderrareearthquakeHowevernonlinearanalysisanddamageevolutionanalysisofarchdamisstillanunresolvedproblemItthereforeisofpracticalandtheoreticalsignificancetostudythenonlinear

5、behaviorofarchdamsubjecttorareearthquakeIthasbeenwidelyrecognizedthatthenonlinearcharacteristicofmonolithjointandmaterialnonlinearityofconcretearetwosignificantfactorsaffectingtheresponseofarchdamunderstrongearthquakeInt

6、hispaper，thesetwotypesofnonlinearityinarchdamarestudiedAfteranextensivereviewoftheaseismicanalysisofarchdam，thepaperfirststudiedthecontactnonlinearityinarchdamThebasicprincipleofFenves’3Djointelementmodelanddynamiccontac

7、tforcemodelwasintroducedImprovementsweremadeinthedynamiccontactforcemodeltoenableittocontrolthewidthofmonolithjointwithtensionreinforcementThesimulmionofthecontactnonlinearityinmonolithjointinABAQUSwasalsodiscussedThen，t

8、heconcretematerialnonlinearityinarchdamwasstudiedThemethodforsimulationofmaterialnonlinearityofconcreteusingdamagetheoryisbriefedWiththeuniaxialstress—strainrelationshipprovidedinDesignCodeforConcreteStructures(GB5001020