大跨復雜網殼與下部結構協(xié)同工作性能研究.pdf

1、蘭州理工大學碩士學位論文大跨復雜網殼與下部結構協(xié)同工作性能研究姓名：王磊申請學位級別：碩士專業(yè)：結構工程指導教師：王秀麗張貴文20090427大跨復雜網殼與下部結構協(xié)同工作性能研究AbstractLargesp鋤complexlatticeshenstmcture，asitsbeautiful印pear；mce，reasonablemechanicalperf0mance，nexibleaIlddiVersityofstructure，

2、mech鋤ism粕dfaCtory—like，hasbecomethemostdevelopspatialstmctureWiththewide印plicationoflargespancomplexlatticeshellsinengineering，themechanicalpropeIrtiesofthestmcturesweremore鋤dmorepaidattentiontoBec鋤sethereareshortcomings

3、inanalysisoflarge—spancomplexlatticeshell，inthispassage，takeQingyanggymnasiuminGansuprovinceasstudybackgroundNonlinearfiniteelementmethodisappliedAsystemcomposedbylargesp觚complexlatticeshen觚dsubstmcturewillbe鋤alyzedbyusi

4、ngfinitesonwareofMIDASandANSYSprogr鋤s’IWokeyproblemsasboundarycircumstancesandtheglobaldampingradioofsuchstructuresare鋤alyzedinthisp印erforreferenceforthecalculationand觚alysisinpracticalprojectThemainlyworkinthisp印erasf01

5、lows：(1)Thetextanalyzesbearingreactionforces，intemalforcesandnodedisplacementsoftheoverallstmctureofthelarge—sp距complexlatticeshenconsideringthedifferentboundaryconditionsTheresultsshowthatthesupportshouldbeconsistentwit

6、hthecalculationassumes，andtheborderbearingstifmessshouldbebasedonthestiffnessofsubstructureandthestinhessofbearingSoeffcctsoftheboundaryconditionsshouldbeconsideredtolargespanconlplexlatticeshellstmcturalperfomanceinthea

7、ctualengineering(2)’r0studythevibrationcharacteristicsoftheoVerallstnlcture，thetextanalysesthemodalusingMIDASaIldANSYSsoftwarerespectiVelyThenaturalfrequencieswillbeobtainedinordertostudythedynamiccharacteristics(3)Thete

8、xtobtainedthediflferentmodesofd鋤pingratiosofthecombinedstmcturesofsteellatticeshellandconcretesupponsaccordingtothedampingratiogroupintheMIDASprogramThendiscussonthed鋤pingratioofthestructureaccordingthereliability鋤alysis

9、鯽dthedampingratioisbetweenO033觚dO049(4)UsingsoftwareofANSYSprogr鋤，throu曲thedynamictimeintervalanalysisa_boutcomplexspatialshellstmcturewithtwocalculatiVemodels，whichwerewithsubstnlctureornotComparedthenodedisplacementand

10、rodaXialforceoftheoveranstmcture，齟dtracedoutnodetimedisplacementcun，e鋤dtheroddyllamicintemalforcetimecurve，thusresearchseismicperfomanceofthelargesp舳complexlatticeshellandsubstructureconsideredcooperativeeffectsAtthesame