預(yù)應(yīng)力網(wǎng)殼結(jié)構(gòu)的風(fēng)振響應(yīng)研究.pdf

1、東南大學(xué)碩士學(xué)位論文預(yù)應(yīng)力網(wǎng)殼結(jié)構(gòu)的風(fēng)振響應(yīng)研究姓名：李志敏申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：孟少平20070301東南大學(xué)碩士學(xué)位論文ResearchonWind—inducedVibrationofthePretensionedLatticedShellsSoutheastUniversityByLIZhiminSupervisedByProfhmNGShaopingAbstractThePtetemionedLattice

2、dShellgUuctme(PLSS)isanwspacestructtweformmingthemodern弘髓蚋掰ingtechnologyinspacelatticedshellstructureAdditionalcablesappliedinlatticedshellsm|ctlⅡ℃，prestressingcouldimproveitsStressstate，decreasethemaximalstress，increase

3、itsstiffnessanddecreaseitsmaximaldeflectionunderserviceloadsThepretensionedlatticedshellstructurecallnotonlybeusedinlongerspanbutalsobemoleeconomicalthanthetraditionallatticedshellstructure，soitwillcertainlyenjoydevelopm

4、entinthefutureInthelatestyears，muchmoreresearchWasrelatedtothecalculateanddesignmethod，theoptimaldesigntheoryandtheanalyticalmethodforthewholepres慨mgprocess，butonlyafewinvolvedthewindinducedvibrationoftbepmtensionodlatti

5、cedshellsRandomsimulationmethodintimedomainwasusedinthisp；IpnUsingtherandomsimulationtechniqueofwindloadtogetthewindspeedtimeseriesasinputlargenumberparameteranalysisofwindinducedvibrationbehavioursinthe咖iouedlatticedsph

6、ericalandcylindershellstructureswasachievedThenapracticalwindresistantdesignmethodappropriatetotwokindsofpretensionedlatticedshellstructureswasproposedandthegenerallawsofthegeneralwindvibrationcoefficientchangingwitlleve

7、ryparameterindiversifiedconditionswcrediscussedThemainworkofthispaperwasasfollowed：(1)TwokindsofcorrelativerandomsimulationtheorymethodWCgesystemicallyexpatiated，thenbymixprogrammingofMATLABandVC，thesimulatingprogramtoge

8、twindspeedtimeseriesbyusingAutoRegressivemodelandHannunySuperpositionmethodwasdesigned(2)Thedynamiccharacteristicsoftwokindsofpretensionedlatticedshellstructureswercdiscussed，andtheinfluenceofthevalueofprestressandthecab

9、lesonthethedynamiccharacteristicwascomparedResultsshowedthatthefreqanceywasminishedaflcfaddingprestressedcablestosomeextentbutthevalueofprestressinghadalittleinfluenceonthedynamiccharacteristic(3)Thedetailedparameteranal

10、ysisofwindinducedvibrationinthetwokindsof咖1llo“I坤swasgivenusingtherandomsimulationmc&odintimedomainandthesimulatingprogramtogetwindspeedtimeseriesdesignedinthispaperTheparameterswereclassifiedas“geometryparameterstructur

11、eparameterandwindparameterThegeometryparameterincludedtherationofrisetospanspanthicknessofshellsandrationoflongtobroadThe$truc=tureparameterincludedthesizeofelemensectionroofloadthestiffnessofelasticityrestirictionarrang

12、ementofcablesandvalueofpreslressingThe、】vindparameterincludedthebasicwindspeed，typeofterrainandbuildingheightThenthegeneraldistributingandchanginglawsofverticaldisplacementwindvibrationcoefficientofeverynodeinstructureby