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• W614296945 abstract "In the world of structural engineering glass is an innovative material. Compared to other conventional structural materials like concrete, steel and timber, it is especially the transparency property that makes it a valued material. Due to the increasing demand for transparency in contemporary architecture, much more structural components as beams, plates, portals and columns are developed in glass. Besides the transparency property, the brittleness of glass makes it essentially an unsafe structural material as the residual capacity is limited. Therefore, the structural glass column is still in its early phases of development. As architects and clients, in general, do not like columns, they are said to block the view and stand in the way. Engineers need to add columns to buildings to provide support. These conflicting desires can be solved by developing a more attractive column, a glass column. The aim of this research project was to focus on further knowledge and understanding of the structural design aspects specifically related to structural glass columns and, on the basis of these findings, to design a glass column as a structural element in a pavilion. The considered slender columns were assembled from rectangular monolithic flat glass plates into different configurations. An exploratory study to the design aspects of glass columns was performed by doing experiments. One-metre-high glass columns were assembled from glass plates 8 millimetres thick, 100 millimetres wide and 1000 millimetres long and glued with a two-component adhesive based on epoxy resin (Araldite 2000 PLUS 2013) into five different configurations. These columns were compressed by a test bench with felt as the interlayer material to distribute the stresses uniformly over the cross-sectional area. A thorough analysis of the columns and their structural behaviour resulted in four design aspects that should be considered in the design process of a structural glass column: - a difference in the vertical position between the assembled glass plates; - susceptibility to peak stresses at the edges of the glass column; - the stiffness properties of the glue; - imperfections like holes and scratches. A two-dimensional numerical model was developed to study two of the considered design aspects. The effect of a difference in the vertical position between the assembled glass plates (which results in protruding edges) and the stiffness properties of the glue on the stress development in the glass were studied. Another series of experiments was performed to study the effect of several design options on the load bearing capacity of the column. The experiments revealed that, among others, avoiding the chance of uneven loading due to a difference in the vertical position between the glass plates and applying an adhesive with low stiffness results in more uniformly distribution of the stresses over the glass column. Finally, the findings of the experimental and numerical investigations were integrated into the structural design of a glass column for a pavilion. The preliminary design of a pavilion, which consists of ten columns, served as a context for the structural glass columns (each four metres high). Two main aspects were distinguished in the design process of the column: the boundary connection system and the related cross-section. Finally, a safety concept was developed for the monolithic glass column by applying an outer layer of safety glazing around the structural glass column. To conclude, from this research it is found that different design aspects play an important role in the bearing capacity of slender glass columns assembled from rectangular monolithic flat glass plates. On the basis of the experimental and numerical results the most relevant aspects related to designing a structural glass column were listed in the report." @default.
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• W614296945 date "2011-06-24" @default.
• W614296945 modified "2023-09-26" @default.
• W614296945 title "Glass Columns: A fundamental study to slender glass columns assembled from rectangular monolithic flat glass plates under compression as a basis to design a structural glass column for a pavilion" @default.
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