Structural Use of Laminated Glass in Grid Shells
摘要
Examples of the use of multilayered glass elements in the construction of grid shells are considered. The main design features and atypical engineering solutions in the design and construction of original transparent roofs, atriums, or skylights are given. In addition to an architecturally attractive appearance, glass allows to reduce the consumption of steel, using its only in supporting structures and nodes. At the same time, glass provides mechanical resistance to various external loads and impacts. The use of multilayered glass panels as supporting elements in shell structures requires the selection of the cross-section, namely the selection of the type of glass, its thickness and the number of layers, as well as the type of polymer film for interlayer lamination. This article presents the results of experimental studies on the bending of multilayered glass plates, which consisted of annealed and tempered glass placed in different layers in height, and EVASAFE interlayer films. The possibility of using FEM for the design of laminated glass elements for glass grid shells has been verified. Shell element SHELL181 based on the theory of first-order shear deformation (the so-called Mindlin-Reissner shell theory) was used for modeling multilayered glass plates in the Ansys Software. Information on materials properties and the main provisions of the calculation are provided. The ratio between the calculated and experimentally measured values of the failure load for the lower layer of glass in a plate with three layers of annealed glass connected by a polymer film was obtained.