O.M. Beketov National University of Municipal Economy in Kharkiv
O.M. Beketov National University of Municipal Economy in Kharkiv
O.M. Beketov National University of Municipal Economy in Kharkiv
O.M. Beketov National University of Municipal Economy in Kharkiv

This paper is devoted to the frameless coverings - special-type arch coverings extended to territories of Ukraine. This type of covering is essentially folded open type cylindrical ribbed shells that are based on an arched structural element - the thin-walled, cold-deformed profile. Based on accepted hypotheses and implementing structural nonlinearity and illustrating the possibility of progressive collapse, the algorithm of creating finite-element models of these coverings was constructed. During the research, to the verification created algorithm, the full-scale experiment was done. The stress-strain state of a block of the original structure and numerical model were analyzed. The components of the stress-strain state obtained in the research are presented in the form of a mosaic of the vertical deflections. Comparison of the calculated deflections and the experimental ones are shown. The qualitative congruence of the results proves the adequacy of the algorithm.

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