Structural Behaviour of Point Fixed Connections in Structural Glass : Master's Thesis

Abstract

Staklo ima veliki potencijal i postalo je vremenon često korišten materijal u građevinarstvu. Tehnološkim razvojem (toplinska obrada i laminacija) pretvoren je u konstrukcijski materijal te ima veliku primjenu u graditeljstvu, posebice u fasadama, ali i upečatljivim arhitektonskim elementima, Kako propisi za projektiranje konstrukcijskih staklenih elemenata nisu u potpunosti definirani, nerijetko se kod izvođenja zahtjevnijih konstrukcija primjenjuje eksperimentalno ispitivanje i detaljna numerička analiza. Jedno takvo ispitivanje je provedeno za elemente fasade Karla Tower-a (Karlatornet) u Gothenburgu. U ovom radu pokazan je utjecaj točkastog pridržanja na stanje naprezanja i deformacija u staklenim elementima fasade, Eskperimentalno isptivianje je provedeno u laboratoriju Građevinskog fakulteta Sveučilišta u Coimbri. U ovom radu su navedena ispitivanja modelirana u računalnom programu ABAQUS, analizirani različiti utjecaji te pokazana usporedba dobivenih rezultata. Analiza je pokazala da ekscentričnost točke opterećenja i nesavršenosti uzrokovane postupkom laminiranja imaju značajan utjecaj na ponašanje uzorka i raspodjelu naprezanja.Glass has great potential and has become a frequently used material in civil engineering practice over time. Through technological development (heat treatment and lamination), it has been transformed into a structural material and has a wide range of applications in construction, especially in facades, but also in striking architectural elements. Since the regulations for the design of structural glass elements are not fully defined, experimental testing and detailed numerical analysis are often used when implementing more demanding structures. One such test was conducted for the facade elements of the Karla Tower (Karlatornet) in Gothenburg. This thesis shows the influence of point-fixed connections on stress and strain distribution in glass elements of the facade. The experimental test was conducted in the laboratory of the Faculty of Civil Engineering, University of Coimbra. In this thesis, the experimental tests are modeled in the ABAQUS computer program, analyzing different influences and presenting a comparison of the obtained results. The analysis showed that the eccentricity of the load point and imperfections caused by the lamination process has a significant impact on the behavior of the sample and the stress distribution