INFLUENCE OF AN INTIAL IMPERFECTION ON THE LATERAL AND TORSIONAL BUCKLING OF A HYBRID BEAM

Abstract eng:
Glass has grown in importance in modern architecture because of its transparency. Various types of hybrid structures, consisting of glass and another material (e.g. timber, concrete, steel), are analyzed to ensure optimal structural interaction between the two materials. Hybrid steel–glass beams can also be used as vertical elements – as supporting fins for glass facades. Wind suction then becomes a source of instability of the beams because the compressed side is unsupported. Initial geometric imperfections can significantly influence the stability response of hybrid beams. This paper deals with measurements of the imperfections of hybrid steel-glass beams, and reports on a numerical investigation into the effect of imperfections on the behavior of simply supported hybrid beams subjected to four-point bending.

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