圓鋼管空間KT型相貫節(jié)點(diǎn)極限承載力分析.pdf

1、重慶大學(xué)碩士學(xué)位論文圓鋼管空間KT型相貫節(jié)點(diǎn)極限承載力分析姓名：韓旭申請學(xué)位級別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：崔佳20090601重慶大學(xué)碩士學(xué)位論文英文摘要ABSTRACTMultiplanarCHSKT_jointisoneofthetypicaljointconfigurationsinspacetubulartrUSS、ⅣitlltriangularsectionHoweverthepresentcodeGB50017—2003

2、CallnotfigureoutthedesignofthesejointsFiniteelementanalysisofultimatecapacityofmultiplanarCHSKTjointsiscarriedoutwithANSYSprograminthispaperwhichtakesgeometricandmaterialnonlinearityintoconsideration，nlemainresearchconte

3、ntinthisarticleisasfollowsOFirst，themodelsofmultiplanarCHSKTjointsareestablishedbyusingANSYSprogramThroughcomparativeanalysisofdifferentmodelstheappropriatemodelisestablished(室)Comparedwithuniplanarjoints，spaceeffect，whi

4、chincludetheloadeffectandgeometriceffect，isanextraandimportantfactorinfluencedtheultimatecapacityofmultiplanarjointsandcan’tbeignoredSotheinfluenceofthespaceeffectontheultimatecapacityofKTjointsisstudiedbyFEMAndtheinters

5、ectioncurvesoftheultimatecapacityofTbranchandKbranchareobtainedAlsotheinfluenceoftheaxialforceratioofTbranchtoKbranchontheultimatecapacityofKTjointsisstudied③FinallythefailuremodesofmultiplanarCHSKTjointsarediscussedandt

6、hedetailedclassificationisgivenAlsothehistoryofnodedisplacement，nodestressandplasticityspreadwithloadingofdifferentmisdescribed④Theeffectlawsoftheparameters丫，pand9totheultimatecapacityaredepictedMeanwhiletheinfluenceofco

7、mpressedstressratioinchordnontheultimatecapacityofdifferentmisstudiedItshowstheinfluenceofallparametersexceptmontheultimatecapacityisobviousWhilethechordiscompressedtheultimatecapacitydecreases，thispapersuggestQncouldbeu

8、sedtocalculatethedecreaseddegreeWhileKTjointdestroytheultimatecapacitiesofbranchesareinterdependence，theirrelationshipcouldrefertotheformulaproposedinthispaper@Comparedwiththeresultsgotfromtheformulasofuniplanarjointsinc