STRENGTH ASSESSMENT OF STEEL-REINFORCED CONCRETE STRUCTURES OF THE BOOK DEPOSIT OF THE NATIONAL LIBRARY OF THE REPUBLIC OF BELARUS
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Abstract
The unique building of the National Library of the Republic of Belarus includes not only urban planning, architectural, technological modern solutions, but also structural ones. One of such modern structural solutions is the use of steel-reinforced concrete structures that combine the advantages of metal and reinforced concrete structures. The article presents the results of applying a nonlinear calculation based on the diagrammatic method of stress-strain state parameters at any stage of work under load, including the construction stage, paying attention to the effects of the dead weight of steel structures and freshly laid concrete, accounting for forced deformations of concrete shrinkage, as well as the strength, deformability of complexly loaded steel-reinforced concrete elements of the building of the National Library of the Republic of Belarus, subject to the joint operation of rigid steel sections and reinforced concrete. A criterion for calculating the internal force corresponding to the strength of a composite element is proposed in the form of the maximum force at which the conditions of force equilibrium in the cross-section under consideration are met, which does not require standardization of the ultimate compressibility of the composite element components and allows taking into account the high degree of force redistribution between them in the cross-section.
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References
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