Calculation Features of Wooden-Composite Ribbed Plates with Splices in the Cover

Wood-composite plate-ribbed bend structures with plywood and oriented strand board as covers with splices are considered. An overview of studies devoted to the study and increasing of the efficiency of such structures is presented. The theory of calculation of composite rods by A R Rzhanitsyn is taken for compilind a mathematical model for calculations of the the stress-strain state of these structures, taking into account the splices in the cover and the flexibility of mechanical joints of the covers and ribs. The graphs of the dependence of the maximum tensile stresses in the ribs in the criterion cross section and the maximum vertical displacements from the shear bond stiffness coefficient and the location of the splices in the cover are presented. The values of the coefficients for the engineering calculation of plates, taking into account the decrease in the strength and deformation characteristics of the composite section of panels with splices in the cover, compared to panels without splices in the cover, are proposed. Conclusions and recommendations are formulated based on the results of the research, which can be used in the design of wood-composite plate-ribbed structures.