應(yīng)用新型擬線性變摩擦滯回阻尼器的大跨度懸索橋地震響應(yīng)分析與減震控制研究.pdf

1、中國地震局工程力學(xué)研究所碩士學(xué)位論文應(yīng)用新型擬線性變摩擦滯回阻尼器的大跨度懸索橋地震響應(yīng)分析與減震控制研究姓名：林能輝申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：防災(zāi)減災(zāi)工程及防護(hù)工程指導(dǎo)教師：胡聿賢201105ABSTRACTIIIABSTRACTWiththeprogressofsocietythedevelopmentoftechnologylargespansuspensionbridgesdeveloprapidly.Largespanbridg

2、esaretransptationjunctionshavehugeimpactonthenationaleconomyitresultsinhugelossesoncetheyaredamagedbyearthquakesthusitisnecessarytoconsiderimplementseismicmeasuresftificationagainstearthquakeswhiledesigninganalyzingsuspe

3、nsionbridgesvibrationcontrolisoneofthemosteffectivewayamongthem.Indertoensurethelifesafetyofthebridgestoprotectnationalpropertylivesofthepeopleitisnecessarysignificanttodoresearchonthesubjectofvibrationresponsecontrolofl

4、argespansuspensionbridges.Therearemanywaystoimplementvibrationcontrolofbridges.Weuseanewtypeofpseudolinearhystereticcurvedamperwithfrictionvariableacteristicswhichdevelopedbyourresearchgrouptocontrolseismicresponseoflarg

5、espangroundanchedsuspensionbridges.Thenewtypeofpseudolinearhystereticcurvedamperwithfrictionvariableacteristicsisakindofdisplacementrelatedfrictionvariabledamperitstructuressimplepricetoperfmanceratioisgooditcanbeusedina

6、lltypesofstructure.Thisnewkindofdampingdevicehasaunifmfrictioncoefficientthefrictionfcebetweentheinnerfrictionringtheinnerwallofthesleevecylinderwhiletheringmovesisproptionaltothedisplacementamplitudebychangingtheinsided

7、iameterofthesleevecylinderthedirectionoffrictionisthesameasthevelocity’sthusitcanexpressaapproximatelinearhystereticdampingacteristicstheabilityofenergydissipationprovidedbythehystereticcurveisstrong.Themaincontentsofthi

8、sdissertationaredescribedasfollows:1.Basedonthepreviousresearchachievementsinthisfieldstructuralfeaturesearthquakedamagefeaturesofsuspensionbridgesarediscussedsummarizedseveralcommonlyusedwaysofbridgestructurescontrolare

9、enumerated.2.Anewtypeofpseudolinearhystereticcurvedamperwithfrictionvariableacteristicsarepresentedintroducedthehystereticacteristicsmechanicalpropertiesofthedamperareshowntheloadingunloadingexperimentresultsofthedampera

10、regiven.BasedonANSYSmaterialsubroutine(USERMAT)secondarydevelopmentfunctionofANSYSthenewtypeofpseudolinearhystereticcurvedamperwithfrictionvariableacteristicshystereticmodelsubroutineisdevelopedwhichcanadjustitshystereti