鋼構(gòu)件與鋼框架結(jié)構(gòu)的穩(wěn)定性無損檢測方法研究

1、同濟大學土木工程學院碩士學位論文鋼構(gòu)件與鋼框架結(jié)構(gòu)的穩(wěn)定性無損檢測方法研究姓名：劉輝申請學位級別：碩士專業(yè)：結(jié)構(gòu)工程指導教師：鄧長根20090501摘要ABSTRACTTheperformanceofsteelstructureswillwearoffinanaturalenvironment，whichwilldeclinethestabilityofsteelstructuresandmakesteelstructurescolla

2、pseSoitisveryimportanttotestthestabilityofsteelsnuctlJresThemethodsoftestingsteelsnuCtIlresincludedestructivetestingandnondestructivetestingThispaperhasmadeapdmarystudyofhowtotestthestabilityofsteelstructuresbyusingstati

3、cequil—ibriummethodandvibration—frequencymethodFirstofall，thecollapseofsteelstructuresusuallyresultfromtheinstabilityofsteelmembersIntheaxialcompressionorsimplebendingorcompressivebending，testthestabilityofsteelmembersof

4、differentcrosssectionsbyusingstatic—equilibriummethodandvibrationfrequencymethodFormulaeofthestabilitysafetyfactorstoindicatethestatusofsteelmembersstabilityarederivedSecondlyformulateabouttherelationoftheaxialload，displ

5、acementandfrequencyofcontinuoussteelpressurebarared碰vedbyusingstatic—equilibriummethodandvibrationfrequencymethodMakinguseoftherelationexpression，itcantestthestabilityofsteelmembersbyaddingcontrollableloadAtlast，formulat

6、eabouttherelationoftheaxialloadandcolumntophorizontaldisplacementalederivedThen，linearcalculationsandnonlinearvibrationfrequencycalculationsforsteelframestructureshavebeencardedoutAndformulateabouttherelationoftheliveloa

7、dandfrequencyarederivedbydatafittingSo，thestabili夠ofsteelframestructurescanbetestbysurveyingcolumntophorizontaldisplacementandvibrationfrequencyKeyWords：steelmembersteelframe，stabilitynondestructivetesting，staticequi—lib