The ribbed-annular dome's upper tier model stability experimental studies

نویسندگان

چکیده

Abstract. Purpose. The work’s aim is to check the stability loss hypothesis with snap-through effect of ribbed-annular dome's upper tier on a full-scale model by experimental tests, and confirming nonlinear tier's work under external load. Methodology. ribbed-ring dome circumscribe in plan as circle diameter 18 m rise ratio span - 1/4, which consisted 8 ribs had 6 tiers height, was taken an dome-model analog.The bounded lower ring, ring for below, support ring.Tier rings are made steel closed bent welded profiles rectangular cross section. As model, it decided use von-Mises truss popular two-rod inclined systems' theoretical studies, allows modeling these systems behavior. classic using behavior associated number problems.First, three-dimensional system eight rods, so equivalent low-pitched truss, 1/4 tier.Secondly, has limited rigidity can be deformed, while fixed supports, why add elastic horizontal supports model.Horizontal were performed pair puffs simulated deformations. Findings. obtained data primary secondary processing, experiment results analysis carried out. deformations nature concentrated vertical load action ridge node confirmed.It established that joint effect. Scientific innovation. deformation dependencies help experimentwere obtained. A comparison truss' studies existing studies' made. confirmed reliability analytical expressions feasibility preliminary assessment stability. Practical value. research allow creating tools designers increase structures reliability.

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ژورنال

عنوان ژورنال: Opìr Materìalìv ì Teorìâ Sporud

سال: 2022

ISSN: ['2410-2547']

DOI: https://doi.org/10.32347/2410-2547.2022.108.283-294