The Anti-lateral Stiffness Analysis On Multi-ribbed Composite Wall Based On Matrix-Inclusion Type Composite Materials

Along with reform and open to go deep into, be used as an important marking in the development middle class family society, residence construction develops fast. Multi-ribbed composite Slab Structure, as a new structural system, is very potential. But there is still a lot to be deeply researched and complemented in the development and application process of new construction system. The paper, through summing up preliminary studies, proposes the matrix-inclusion type composite materials equivalent elastic wall model against the deficiencies of traditional model. And the micro-mechanics finite element method is used to verify the calculation model proposed in the paper. Finally, applying orthotropic elasticity theory, a practical formula for the anti-lateral stiffness of Multi-ribbed Composite Wall (MRCW) is derived. Finished work as following:Considering the special structure of the MRCW, establish the matrix-inclusion type composite materials model of the wall and look the concrete ribbed-beams and ribbed-columns of continuous distribution as the matrix, and the block embedded in them as the inclusions. By means of the composite materials theory, the formula of in-plane effective shear moduli of equivalent walls are deduced.The micro-mechanics finite element method is used to make an analysis of the MRSW on the elastic stage in this article. Discussions about the selection of representative volume element and boundary condition exerted, which are the main problems in the solution process of the effective elastic moduli of MRSW, are made and micromechanics models suitable for MRSW are established.Applying orthotropic elasticity theory, a practical formula is derived for the anti-lateral stiffness of MRCW.