As part of the work, finite element modeling and numerical studies of single-layer cylindrical rod roofs were carried out. Horizontal faces are introduced and the influence of the side elements on the stress-strain state of the structure is determined. The degree of change in the forces and movement of the nodes has been determined. The features of the work of roof are analyzed and dangerous areas with maximum parameters are identified. The analysis of the introduction of horizontal faces is performed by comparing the obtained patterns. A positive redistribution of forces on the surface has been achieved and a reduction in the movements of characteristic nodes has been ensured. There is a space for wiring engineering communications.

Keywords: cylindrical rod roofs, horizontal faces, side elements, forces, displacements

The article discusses the issues of stability of single-layer cylindrical rod roofs and establishes the suitability of the theory of thin solid shells for similar-shaped core structures. An analysis of the factors was carried out to determine the magnitude of the critical load and the need to take into account the parameter characterizing the change in the geometry of the structure along the arc of the circle was proved. The values and ratio of flexural and membrane stiffness are obtained depending on the possible number of half-waves of the shape of the loss of stability, and a pattern for determining the critical load is established.

Keywords: cylindrical rod roofs, stability, critical load, stiffness, number of half-waves