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LOCAL AND DISTORTIONAL BUCKLINGS OF DIFFERENT INCLINED LIPPED PURLINS

Wu Jinqiu Tong Genshu(Dept.of Civil Engineering,Zhejiang University Hangzhou 310027)  
It is analysed distortional buckling of cold-formed lipped channel section beams and lipped Z-purlins in terms of a simplified model,and it is calculated distortional buckling loads and local buckling coefficients of lipped channel section beams and lipped Z-purlins in terms of finite element method.Then the effects on distortional buckling coefficient due to the angel of lipped flange are also studied,the value of buckling coefficients of inclined lipped flange relative to the angle of the lipped flange,is given,which can be used in actual design.
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