concrete rods, analytical solutions, physical nonlinearity, elasticity, transverse loads

Three-layer concrete rods of constant cross-section along the axis of the rod are considered, where each of the layers can have its own brand of concrete. It is assumed that transverse quasi-static loads act on the rod, while some of the layers of the rod are deformed elastically, and some are non-linear. Analytical solutions are obtained for bar deflections, the interface between elastic and nonlinear regions, ultimate loads and examples of calculations for different grades of concrete of the bar layers and transverse dimensions of the bar section shapes.

Nemirovskii Yuri Vladimirovich, Dr. Sci. Phys. & Math., Professor, Leading Research Worker, S. Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the RAS, Novosibirsk, Russia, Professor, Novosibirsk state technical University, Novosibirsk, Russia.

Tikhonov Sergey Vladimirovich, PHD, Assoc. Prof., I. Ulyanov Chuvash State University, Cheboksary, Russia.