冷弯薄壁钢—重组竹箱型组合梁抗弯性能研究

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1、密级公开＋分类号ＴＵ３９８．６Ｘ＇ＩＡＮＴＥＣＨＮＯＬＯＧＩＣＡＬＵＮＩＶＥＲＳＩＴＹ硕士学位论文题目：冷弯薄壁钢－重组竹箱型组合梁抗弯性能研究作者：白文魁指导教师：李三庆副教授申请学位学科：结构工程２０１８年０５月１１日Thefiniteelementmodelofcompositebeamsareestablishedbythefactorssuchasspanofbeam,thicknessofreconstitutedbamboo,heightandthicknessofcold-

2、formedthin-walledsteel,span-depthratioanddepth-thicknessratio.Theinfluenceofdifferentfactorsonflexuralcapacityisstudiedbysimulation.Bycomparingtheflexuralcapacityofcompositebeamssimulatedbyvariousfactorswiththetheoreticalvaluescalculatedbytheoptimizedformula,itisfoundthatthe

3、errorsbetweenthetwomethodsaresmall,whichprovesthecorrectnessandapplicabilityoftheoptimizedformulas.Orthogonalanalysisisusedtoobtaintheoptimalparametercombinationfactorsofcompositebeam.Theflexuralcapacityofcold-formedthin-walledsteel-reconstitutedbambooboxcompositebeamisestim

4、ated.Theresultsshowthatthecompositebeamsstudiedinthispaperhavebettermechanicalpropertiesandintegrity,andcanbeusedasabearingmemberinbuildingstructure.KeyWords:compositebeam;reconstitutedbamboo;cold-formedthin-walledsteel;flexuralcapacity;finiteelementanalysis;influencefactors

5、;orthogonalanalysis目录1绪论.......................................................................................................................................11.1研究背景............................................................................................................

6、................11.2钢与混凝土组合结构........................................................................................................31.2.1钢与混凝土组合结构主要类型及特点.....................................................................31.2.2钢与混凝土组合结构的发展.................................

7、....................................................41.3现代竹结构........................................................................................................................51.4材料特性......................................................................................

8、......................................71.4.1人造竹材板..........................