Introduction. One of the possible options for a simple, practical design of an arched road structure (small bridge) made of corrugated metal is considered, which can be considered as one that is more accurate and labor-intensive for the design of such a structure under the road pressure, as the “structure – soil” system for finite element method.
Problem Statement. Regular normative and methodological documents for the design and maintenance of road structures (culverts, small bridges, tunnels) made of corrugated metal provide a simple formula for the structure of the structure and deformation of the body for such structures round pipes. The world is constantly streaming a wider range of rational and fairly simple types of road structures.
Purpose. To show one of the possible ways of calculating an arched road structure made of corrugated metal on the basis of generally accepted initial provisions and a simple, understandable calculation scheme is the goal and task of this work.
Research methods and results. The methodical basis of this work is the computational and theoretical analysis of the interaction of an arched flexible structure made of corrugated metal with the soil of a road embankment. It is shown that there are reasons to consider such a structure as a component of the “structure – soil” system. Its bearing capacity consists of its own bearing capacity of the arch (outside the soil) and an addition from the action of soil resistance in response to the movement of the arch. The bearing capacity of the arch (beyond the soil) in this work is determined from the action of the vertical uniformly distributed load at the level of the top of the arch from the mass of the soil and the temporary load. To determine the addition to the load-bearing capacity, the arch is considered as a “mechanism” with full hinges. The value of this application is defined as a vertical uniformly distributed load, in which the forces in the additional rods, which ensure the geometric invariance of the “mechanism” and which simulate the soil resistance, are equal to the net effect of this resistance.
Conclusions. The possibility of performing a simplified calculation of an arched road structure made of corrugated metal based on generally accepted initial calculation provisions and a simple and understandable calculation scheme is shown. The proposed method of calculation can be the basis for further research and the development of additions to the current standards for the design of such structures.
