Theoretical Analysis Of Ripple Sternum And Application In Portal Frame

The section of traditional portal rigid frame are constant cross-section and wedge shape variable cross-section,this paper brings up a component cross-section—ripple web plate variable cross-section.According to main specially characterist of portal rigid frame,this paper use MATLAB to work out analytical software .it's concrete analysis includes:endogen force and displacement caculation of rigid frame,stability analysis in and out flat surface of rigid frame,geometrical nonlinear analysis of rigid frame.And make comparison between ripple web plate variable cross-section portal rigid frame and constant cross-section rigid frame. The investigation of this paper has grate actual and expansive significance and offer methods for the application of rigid frame.The investigation indicate that the ripple web plate's critical stress has great improvement than ordinary flat plate and ripple web plate variable cross-section has a rather superiority than constant cross-section portal rigid frame. In a word,this paper's research acquires some valuable conlusion and present some new problems.