1、北京交通大學(xué)碩士學(xué)位論文在役雙層雙曲拋物面網(wǎng)殼結(jié)構(gòu)受力分析及加固研究姓名：徐麗麗申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：呂曉寅高日20080501ABSTRACTABSTRACT：Shells缸u(yù)cnlreiswidelyusedincivilandindustrialbuildingWiththetimegoing，thedesigncodesandanalysismethodsareimproved，thebarsarerusty

2、andtheloadsarechanging，Thus，itismuchnecessarytesearchthemechanicalbehaviorandstrengtheningmethodofexistingshellstructIlresinactualprojectsInthispapertheanalysismethodsofexistingshellstructureareintroduced，andthestrengthe

3、ningmethodsofsteelstructurearedetailedOnthebasisofthesetheories，thefiniteelementmodelisestablished，includingcalculationofload，simplificationofnodenatureandsimplificationofsupportThestructureisanalyzedontheaspectsofstatic

4、anddynamic，thentheunallowablecomponentswillbefoundThedynamicanalysisisprocessedwithElcentrolwaveofUnitedStates，seismicrecordsofTianJin，China(1976)andagroupofartificialacceleration—timecurveTheaccelerationpeakisadjustedin

5、accordancewith8degreesdistrictThetimehistoryresultsalecomparedtotheresponsespectrumresultsIntheprocess，theimpactsontheselfvibrationcharactersbyjointstiffnessandsupportstiffnessarediscussed，andtheeffectofdampingratioonthe

6、timehistoryresponseofthestructureisanalyzedBasedonthestrengtheningprinciples，theintensityofbarisincreasedwithmethodsofunloadingandFRPTheApproachofchangings仃uctLlfe’Sforcesystemadditionalbracesisusedtochangetheslendemessr

7、atioofbarsThechangesofstructure’SinternalforcearedetailedintheprocessofunloadingandafterchangingbarsTheeffectsonbars’bucklingloadbyFRPpastelengthandthicknessareanalyzedandtheneededlengthandthicknessinthe姍dureiSprovidedKE