Improvement of composite wooden elements based on combined mechanical joints for transport infrastructure

The paper presents: a method for numerical calculation of composite wood structures for bearing capacity and stiffness, taking into account the increased shear stiffness of the mechanical joints, refined numerical values of stress-strain state in the edge fibers of the branches of composite elements, scientifically based recommendations for improving the manufacturing technology of composite two- and multilayered wooden beams with a combined joints on claw washers and nails. The developed designs can be used in transport structures of small and medium span wooden bridges on logging roads and in wooden house construction.