DENSITY AND DEFORMATIVITY OF STEEL CONCRETE STRUCTURES OF A DIRECT CIRCULATION PERIOD ON LIGHT CONCRETES
Journal Title: Збірник наукових праць Українського державного університету залізничного транспорту - Year 2018, Vol 178, Issue 12
Abstract
A critical analysis of recent studies on the usage and design of lightweight steel structures has been carried out. The unresolved issue remains the definition of compatible work of light concrete and the profiles in composite closed structures working on compression. The corresponding data is not enough to provide clear recommendations for the design, modeling and actual operation of such structures. Therefore, the obtaining of new data, which allow to describe and correct as much as possible precisely the well-known mathematical models of the work of structures, to specify more accurate the boundary conditions is a current issue nowadays. The data presented in this article have an experimental substantiation, which will further influence the creation of the correct geometric model of steel structure on light concrete. The selection of effective materials for the construction of a lightweight steel structure has been analyzed and performed. The physical and mechanical characteristics of the used materials are determined. The results of the experimental studies of strength and deformability of steel concrete structures of composite rectangular cross section on light polystyrene concrete are given. The experimental researches were carried out in three stages: the consideration of constructions of open section profiles, closed composite section and the formation of spatial steel structure - pylon. The efficiency of gradual reinforcement of composite profiles by polystyrene concrete has been determined. Characteristics of the destruction of each of the above listed composite steel and steel concrete structures are described. Photofixation of the destruction of steel concrete structures was carried out. The effectiveness of using this type of structures is confirmed by the results of the experimental studies. Taking into account the absence of domestic and foreign normative base as for the design of lightweight steel structures, the collection of information, the conduct of field experiments, the standardization and synthesis of already existing works are the perspectives for the development and improvement of this type structures.
Authors and Affiliations
Oleksandr Semko, Nataliia Mahas, Vitaliy Sirobaba
Keywords
Related Articles
- EP ID EP396547
- DOI 10.18664/1994-7852. 178.2018.139460
- Views 57
- Downloads 0
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