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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Ilshat T. Mirsayapov, doctor of technical sciences, Associate Professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0003-4902-6167 Anton V. Selivanov, Siberian Automobile and Highway University, Omsk, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0001-6073-2690 Fedor F. Reger, candidate of agricultural sciences, Siberian Automobile and Highway University, Omsk, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-3288-7457
Title of the articleResistance of shell slabs to static load
Abstract.Prefabricated reinforced concrete ribbed floor slabs are manufactured in power forms using aggregate-flow technology, which requires large amounts of manual labor and energy resources. The presence of reinforcement frames and meshes in them does not allow one to abandon the use of aggregate-flow technology, which requires large expenditures of material and energy resources. A replacement for a ribbed slab can be a shell slab with a cylindrical bottom surface in the transverse direction and a flat top surface, having voids in the flange, located in the transverse direction under the action of a uniformly distributed load in a stress state close to momentless, which allows it to be reinforced only with longitudinal working reinforcement and manufactured using the formless molding method. Shell slabs with voids in the flange have been little studied, and in order to develop methods for their calculations, it is necessary to carry out an experimental study of their operation under load. The goal of the work is to determine the experimental bending moments acting on the lower edge of its flange in the transverse direction, in the middle of the span, as well as to study its cracking and operation at the stage of limit equilibrium. To achieve this goal, the following tasks were solved: tests of models of the structure under study were carried out; calculations of experimental values of transverse bending moments occurring in the middle of the span of a full-scale structure were performed; a comparison of transverse bending moments arising in the middle of the span of various shell slabs was made; the cracking of the structure under study and its operation at the stage of limit equilibrium were studied. Results. The paper presents the results of an experimental research of the stress-strain state of the structure under study, its cracking and operation at the stage of limit equilibrium. Conclusions. The significance of the results obtained for the construction industry lies in the fact that a variant of a reinforced concrete floor shell-slab is proposed, which has a high load-bearing capacity, requires less material input, and has a lower manufacturing cost.
Keywords.Reinforced concrete shell-slab, Floor slab, Experimental study
For citations:Mirsayapov Ilshat T., Selivanov A.V., Reger F.F. Resistance of shell slabs to static load // News KSUAE, 2024, No. 3 (69), p. 88-105, DOI: 10.48612/NewsKSUAE/69.9, EDN: HMMVJO


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