高層建筑地震反應(yīng)MRF-04K阻尼器半主動(dòng)控制的模型試驗(yàn)與仿真分析.pdf

1、一昨㈣刪聞⑧天畢大蓼碩士學(xué)位論文學(xué)科專業(yè)：港口、海岸及近海工程作者姓名：姜南指導(dǎo)教師：史慶增教授李忠獻(xiàn)教授干津堂石耳泰肇瞎AbstractStructuralvibrationcontrolasanewtechnologyiSavalidmethodtoreducetheseismicdisasterThesemi—activecontrolbasedonthesmartmaterialsprovidesanewapproachtoth

2、eorydevelopingandengineeringapplicationofthestructuralvibrationcontr01Magnetorhe0109ical(MR)damperisakindofsemiactivecontroldevicebasedOilthesmartMRliquidwiththepropertiesoflowerpowerrequirement，highspeedresponseandgreat

3、dampingforce，andhasextensiveapplicationprospectsinthevibrationcontrolforcivilstructuresInthisthesis，akindofMRdamperdesignedandmanufacturedrecently，namedasMRF一04Kdamper，andthreecontrolalgorithms，includingInstantaneousOpti

4、malControl(ioc)，ClassicalOptimalControl(coc)andLinearQuadraticGaussControl(LQG)，areintroducedThesemiactivecontrolsystembasedonMRF一04Kdamperisdesigned，andthesemi—activecontrollawandcontr01effectaredefinedTheshaking—tablet

5、estonaonethirdscaledsteelframemodelinstalledanMRF一04KdamperiscarriedoutunderthreedifferentseismicinputsThetestedresultsshowthat，whicheverinthepassivecontrolorthesemiactivecontrol，thepeakValuesofrelativedisplacementsofthe

6、modelstructurearereducedby45％andtheirroot—meansquarevaluesaredecreasedby70％，andthepeakvaluesoftheaccelerationsarereducedby30％andtheirrootmeansquarevaluesaredecreasedby75％ThisdemonstratesthattheMRF一04Kdamperisanidealcontr

7、oldeviceforengineeringapplicationofstructuralcontrolandCallachievebettercontr01effectivenesswithlesscontrolforoeThenumericalsimulationonaBenchmarkmodelof20storeysteelstructureinstalled30MRF一04Kdampersoneachfloorisperform

8、edUDderthreedifferentgeismicinputsThesimu]atedresultsshowthatwhicheverin：h#passivecontrolorthesemi—activecontrol，thepeakvaluesofrelativedisplacementsoftheBenchmarkmodelstructurearereducedby20％andtheirroot—mean—squarevalu