Input
The initial data are provided by the working documentation of the P stage - drawings of KM, KZh, technical report on engineering and geological surveys, technical report on the results of static tests of piles, special technical conditions for the design of this sports facility.
Calculation model
To determine the stress-strain state of the building frame and pile grillage, a spatial computer model was developed in the APM Structure3D system, which includes metal structures of the building frame and stands, large-span covering, external and internal stairs, as well as pile foundation. All elements (parts) of the structure are made in a single model, which most fully and accurately reflects its work.
The piles were conventionally modeled with shortened rods with a cross-section of Ø820 mm. The lower level of the rods corresponds to the insertion of piles into the grillage at the elevation of -2.25 m. The rest of the piles are hinged with the grillage. The support of the piles is elastic along the vertical axis Z of the GSK. The stiffness coefficients are the values given in the calculation and explanatory note of the pile foundation project.
Reinforced concrete grillages were modeled with plates with a 1.5 m spacing of B30 concrete. Thickness 600 under the stands and 1000 mm under the multi-storey part.
The benches for the support of the inclined beams of the stands were also modeled with reinforced concrete plates of the appropriate thickness. The support nodes of the frame panels and inclined beams of the stands on the monolithic reinforced concrete grillage are hinged.
The large-span roof is a spatial structure in the form of radial arches with tie rods. The beams of the lower and upper chords were modeled using the "beam" type of rod FE. Links—The type of truss element. The coating rests on the metal frame of the building through a system of comprehensively movable and articulated-fixed supports, which were modeled as rigid inserts.