Modeling the operational state of suspended roofs with large spans and unique load-bearing elements

Abstract

The stress-strain state of hanging systems and support contours in the stages of pre-tensioning of cables, as well as in the processes of construction and operation of unique structures, has been studied. The nature of the operation of hanging systems and support rings is revealed depending on the type and level of loading, without the moment or bending state of the support ring, as well as the mutual connection of the cable belts. An analysis of the limiting state of cable-stayed long-span suspended roofed structures is given. The real states of modeling of cable-stayed systems with different outlines of the support contour were studied. A situation has been determined in which the choice of the optimal shape of a curved support contour is required, with radial and cross cable systems. We studied the features of the operation of external and internal support rings in the stages of pre-tensioning of the cables and the transition of the structure to the installation and operational state. The structural safety of hanging systems under random alternating influences was studied, leading to: overloading of individual sections, breakage of the cables, failure of anchor fastenings, compliance of the support contours, changing the initial geometric shapes of the ring.