帶斜面的網(wǎng)架整體結(jié)構(gòu)相互作用分析.pdf

1、蘭州理工大學(xué)碩士學(xué)位論文帶斜面的網(wǎng)架整體結(jié)構(gòu)相互作用分析姓名：于龍申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：王秀麗20100420帶舍：Iffli的網(wǎng)顰社休銷j5、J11ff：作ll‘忻AbstractThespacetrussisthestructuretypethatiSusedmostinspacestructureInengineeringpratice，withrichnessandvarietyofarchitectural

2、stylesorwiththeneedsforlightandairthespacetrusswithinclinedplanecanbeadoptedBecausethespacetrussisplacedinclinedandthesupportingcolumnshavelargeelevationdifference，themassandstiffnessofholisticstructureisevidentlyasymmet

3、ricUnderearthquakeaction，thelowsideandhighsidesupportingcolumnsinteractthroughspacetruss，SOtheholisticstructurehasgeneralityofspacetrussaswellasindividualityofspacetrusswithinclinedplaneTheanalysisshouldbebasedontheholis

4、ticstructureThepapercarriesondifferentanalysesofstatics，naturalvibrationcharacteristics，elastoplastictimehistoryanalysesforinclinedspacetrussesofdifferentsubstructurestiffness，andcompareswithplanespacetrussinrespectofstr

5、essfeaturesTheanalysesshow：thewholestressfeaturesofinclinedspacetrusseshavelargedistinguishbetweenXYdirestionsWheninclinedspacetrussesvibrateindirectionofy(directionofsecondorthirdvibrationmode)，thehighsideandlowsidesupp

6、ortingcolumnsandspacetrussconstituteasolidlateralresistantsystem，SOtheshearforcesisdistributedaccordingtolateralstiffnessofsupportingcolumnsunderearthquakeactionindirectionofv：Wheninclinedspacetrussesvibrateindirectionof

7、x(directionoffirstvibrationmode)，thelowsidecolumnsdon’tconstrainhigh—sidecolumnspowerfullyshearforcesindirectionofxaredeterminatedbyloadsthateverycolumnbearbasedonDtAlembertPrinciple；Becausetheaxialforcesthatarepassedfro

8、mhigh—sideandlowsidecolumnstotopchordsandwebmembershavemuchdifference，theinternalforcedistributionofinclinedspacetrusshasthisuniquecharacterunderearthquakeaction；Whenthesupportingstiffnessofspacetrussofinclinedplanechang

9、es，itmainlvhasinfluenceonlateralvibrationofholisticstructureandverticalvibrationofsuperstructureofspacetrussThepaperconsidersandrealizestheinitialinfluenceofstaticloadsinelastoplastictimehistoryanalysesalsoTheanalysessho

10、w：UnderrareearthquakeANSYSelastoplastictimehistoryanalysisshouldconsidertheinitialinfluenceofstaticloadsThatsuperpositionprincipleisappliedinelasto—plasticstagewillcausedynamicdisplacementofspacetrussrelativelysmallerdyn