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高层钢结构顶部游泳池减震作用的分析.pdf

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高层钢结构顶部游泳池减震作用的分析.pdf

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高层钢结构顶部游泳池减震作用的分析.pdf

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文档介绍:同济大学申请硕士学位论文摘要 Analysis of theMitigation ofSeismic Response of aSwimming Pool on theTop Floor ofHigh-rise SteelStructures ABSTRACT Structuralcontrolis apositive and initiative structure countermeasure,and itopens up abrand·new domain forearthquake resistantand wind resistantdesign ofengineering liquid dampers(TLD)is one of theVibration Absorber System belonging toPassive Control category On account ofthatgenerally therearefirefighting or domestic water tanks,and sometimes aswimming pools on thetop floor oftallbuildings,these tanks orswimming poolsmaybe used directly asliquid dampers tocontrol thevibration ofthestructure;moreover some otherobvious advantages ofTLD systems,TLD is one type ofpassive control systems thathas great realisticmeaning and abroad application future. The concept and classificationofstructural control iseduced and introduced firstly inthispaper. And then,theconcept andprinciple ofTLD isdescribed the current situationand progress ofthe researchofTLD,and alsotheapplication ofTLD inactualengineering mented andsummarized. On basis ofthepotential flow theory ofhydrodynamics,the liquidsloshing model of thedeep water TLD under small amplitude excitationis then,through parameter analysis ofthe model,we get thelinearsimplified model ofTLD. Using thelinearsimplified model andtheMATLAB software,aprogram piled tosolvethe dynamic equations ofthe TLD and one DOF structure system under harmonic excitation-The effect of thevibrationcontml ofTLD aboutthe tunedfrequency ratio、the mass ratio、theexcitationfrequency ratioandthedamping ratio ofTLD puted andanalyzed,and thelawofvibrationcontrol ofTLD iSconcluded. Using theequivalent nonlinear simplified TMD model of TLD under largeamplitude excitation, thedynamic equations ofTLD and thestructuresystem under theactionofearthquake ispresented Then,using theparametric design language APDL oftheFEM software ANSYS,a program piled toanalyze theeffectofthemitigation ofseismic re