engleski

Highly energy dissipative and ductile timber-glass hybrid element

CLT frames infilled with load-bearing glass sheets represent an innovative, hybrid structural element that can serve as load-bearing panel carrying load in both vertical and lateral direction. It can be used as a part of the prefabricated timber house or as a strengthening structural element in an existing timber building or the supporting structural element in historic building during or even after their retrofitting and/or restoration. Such element can be easily connected with the surrounding elements by simple steel fasteners. Here presented type of element has been designed to have a high ductility and energy dissipative properties. Therefore, it is suitable for construction of the earthquake resistant structures or for increasing of earthquake resistance of the existing structures. Glued-in steel rods in frame joints provide ductility of element while specially designed glass-to-wood contacts along the frame joists act as energy dissipaters. Full-scale specimens were tested by combined constant vertical load and displacement controlled cyclic horizontal load (racking load). The purpose of racking test was to obtain data for development of computational model of tested type of structural element that can be used for prediction of inelastic response of buildings with the glass-infilled CLT frames on seismic action. The results of testing in form of hysteresis loops and backbone curves are presented in the paper. Data on stiffness degradation and energy dissipation are given in quantitative way as well as in diagrams showing the changing of those parameters with increasing of horizontal displacements during testing

CLT frame; laminated glass; glued-in steel rod; racking test; ductility; energy dissipation

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