結(jié)構(gòu)風(fēng)振準(zhǔn)靜態(tài)效應(yīng)及上下結(jié)構(gòu)共同作用.pdf

1、同濟大學(xué)士學(xué)位論文結(jié)構(gòu)風(fēng)振準(zhǔn)靜態(tài)效應(yīng)及上下結(jié)構(gòu)共同作用姓名：徐幼麟申請學(xué)位級別：士專業(yè)：@指導(dǎo)教師：張相庭19860201QUAs工《翟般工GAGTIONANDSOILSTRUCTURE工N餾RACTIONOFWINDINDUe國DVI曩RATIONSXUYOU—L工NAbstractInthispaperthemodalanalysisme％hodinrandomvibrationsisdiscussed，工書isshownthato

2、ondltlonB。，toneglectthecrosscorrelationbetweenmadalresponsesnotonlyrelatetothedampingandthedifferencebetween七hetwofrequencies，butalsoddpendOiltheexcitationspectrumtoagreatextentBecausethegus七speot腳hasaquasisratioactionfo

3、rmanycivilengineeringStructures，thecrosscorrelationbetweenmodalrespomsesismoresignificantthanthecontributionofthehigbermode，theRSSmethodcannotbeused工ftheabovetwotermsaresimultaneouslyconsidereditwillbefoundthatthewhipact

4、ionoftowerstructuresdoesnote糊：Theconceptandcomputationalgraphstoevaluatethegustadjustingcoefficientaswella8twocriterionsaregivenItrendersadieeotandconvenientuseinengineeringpracticeInordertopredictthewindinducedvibration

5、softowerstruetureS。consisti磚ofpartswithdifferen七dampings，asubstitutedampingequation“derivedThetheoreticalvaluesarecomparedwiththeexperimentalresultsandthecomparisonisfoundtobe8tatisfactoryFlna工lymatrixformsolutinns，which

6、arebasedOnthetransfermatrixmethodandsomepropertiesofStationaryrandomprocessesareobtainedfortheresponsesoftowerstructuresunderrandomwindloadexcitation，takingjntoaccounttheeffectsofthesoilbehaviorcharacterizedbyaknownfrequ