帶內(nèi)外加勁肋箱形截面鋼塔柱穩(wěn)定性承載力研究.pdf

1、分類號(hào)：U44U4510710—20060679滾步太海碩士學(xué)位論文帶內(nèi)外加勁肋箱形截面鋼塔柱穩(wěn)定性承載力研究張國(guó)璽導(dǎo)師姓名職稱申請(qǐng)學(xué)位級(jí)別論文提交日期學(xué)位授予單位劉永健教授答辯委員會(huì)主席學(xué)位論文評(píng)閱人黃平明教授楊炳成教授梁智濤教高AbstractTheboxsectioncolumnwithinternalandexternalstiffenersisusedinsomeprojects，forexample，Towercolumno

2、fconstructingDongJiangbridgeButthestabilityoftmssectionisnotexplicitlystipulationinactualcodeThereforeitisanimportanttheoreticalandengineeringsignificancetostu#thestabilityoftheboxsectionTowercolumn、析thinternalandexterna

3、lstiffenersThispaperhavebeenresearchedonmechanicalcharacteristicsofcompressionoftheboxsectioncolumnwithinternalandextemalstiffeningribsthroughthefiniteelementnumericalsimulationandrelatedcodeforcalculatingcomparativeanal

4、ysisofnormsonbasisoftestmodelThemainresearchcontentfollowas：(1)Inthispaperthesametypeofmodeltestweredesignedtotextaxialfailurecompressionby20000KNpressuretesterAccordingtothetrialresults，itstudiesthefailuremechanismandme

5、chanicalcharacteristics(2)InthispapertheshellfiniteelementmodelwasusedtocalculatethetwomodelinANSYS，materialnonlinearitygeometricnonlinearityandinitialimperfectionweretakenintoaccountinthecalculationandtheresultsareinacc

6、ordwimtheexperimentalresults(3)Finiteelementnumericalmodelisusedtoanalyzetheeffectofdifferentslendernessratioandtheeffectofinitialimperfectiononthebearingcapacityoftheboxsectioncolumnwithinternalandexternalstiffeningribs

7、Theresultsshowethatthestabilitycoefficientoftheboxsectioncolumnwithintemalandexternalstiffeners，regulatedincriterion，issafe，andpromotthedesignregulationsonthissectioncolumnKeywords：BoxSectionTowerColumn，InternalandExtern