Study On The Mechanism Of Multi-ribbed Composite Wall

Multi-ribbed composite wall,a sort of new structure force-bearing component is effectively converted though special tectonic by frame and filling block whose mechanical properties are quite different.The prophase research has achieved important phasic results.The research on load-bearing performance of wallboard frame grids and mutual synergism of its filling block and the frame is the base for the research on theory of multi-ribbed composite wall and its application.Based on testing,considering the material-nonlinearity and contact non-linearity and supposing this is contract stress between the frame and the filling block,the article studies the interaction effects between the Frame and the filling block through establishing calculation model of multi-ribbed wall panel by setting contact elements. The contact elements(surface to surface contact unit),composed of deformable surface(flexible surface)and target surface(rigid surface),simulates contact and sliding between three-position target surface and flexiblesurface.Though numerical analysis,respectively applying horizontal load of 20kn each level and vertical load of 15KN each level to specimen IFH series,the article researches on the load-bearing performance of the contact interface and the synergism load-resisting mechanism between the frame and the filling block.The research, contrasted with the testing result,reveals the immanence mechanism of the testing phenomenon to a certain extent.Contemporarily,via analysis to non-linearity finite element,the author discusses the effects of the filling blocks of different sizes to structural synergism load-bearing performance and structural deformation of multi-ribbed wall panel,which provides certain references to wallboard practical calculation.