Robustness of the combined arch system with radial ties

To ensure the safety of buildings and structures, it is necessary to analyze structural integrity (robustness). The results various studies show that arches with radial ties make possible create an architecturally expressive, cost-effective material consumption solution problem girders bridging in public buildings, but robustness these systems poorly studied. This article presents failure analysis coating elements form combined steel under scenarios, n-th level a static formulation investigated, considering geometrically nonlinear nature system operation, constructive measures are proposed increase arch ties. calculations were performed SCAD Office software 21.1.9.11. For considered fragment scheme both index Irob > 98.5% corresponds local excess load-carrying ability, ≤ - disproportional. As soon as asymmetric prestressing by disappears, which occurs when most loaded turned off step step, either satisfies strength stability tests, or number ability exceeded significantly decreases. Increasing structure introducing chordal into contributes increasing system.