Определување на механичките карактеристики на конструктивни хибридни плочести елементи од челик и стакло

Abstract

The trend of using load bearing elements made of structural glass is closely related to the appearance of laminated glass. In the last decade, a lot of research is done in the area of load bearing elements, glass beams and columns. The early research include changes in the design of these elements by reinforcing the structural glass elements with steel profiles, ropes, carbon fiber etc. applying them in the weakest zone of the element, tensile zone. The main goal of applying this reinforcement is improving the mechanical behavior of the glass element by changing its stress state and bearing capacity. The main disadvantage of using structural glass elements is their actual strength that can differ from the theoretical. Thus, special attention should be put in designing structural glass elements taking in consideration their strength and brittleness. The proposed and analyzed structural hybrid element made out of glass panel and perforated steel plate is a new and innovative solution which preserves the transparency of the glass but at the same time results in decreasing the stresses in the glass panel and improving its mechanical characteristics. If the perforated element has appropriate plasticity, strength and ductility a residual strength can be obtained for the glass giving it post breakage bearing capacity. The hybrid steel-glass panels that are part of the research are formed by adhesively connecting two different materials. New composite structure is gained that has different mechanical characteristics compared to its elements apart. In order to ensure practical application for these new concepts of hybrid structures, defining its stress-deformation state and behavior is necessary which in this research is done by numerical modeling and experimental tasting of the models.