IN-PLANE SHEAR RESISTANCE OF STRUCTURAL FRAME-WALL SYSTEM: INFLUENCE OF CONFINED OPENING IN MASONRY INFILL WALL

U okviru rada ispitani su numerički modeli armiranobetonskih okvira s ispunskim ziđem, otvorima i vertikalnim serklažima metodom postupnog guranja. Cilj ispitivanja je utvrđivanje utjecaja vertikalnih serklaža. Ispitani su modeli s centričnim i otklonjenim vratnim i prozorskim otvorima koji odgovaraju eksperimentalno ispitanim uzorcima okvira. Dobiveni podatci obrađeni su na način da prikažu doprinos pojedinog elementa modela njegovoj ukupnoj posmičnoj otpornosti. Rezultati ispitivanja daju jasniju sliku o utjecaju vertikalnih serklaža na posmičnu otpornost, kao i na mogući način sloma modela, te pomažu dati smjernice za buduće projektiranje ovakvog tipa konstrukcije.Within this paper numerical models of reinforced concrete frame with URM infill walls, openings and vertical confiment were tested using the pushover method. The aim of the test is to determine the influence of vertical confiment. Models with centeric and eccentric door and window openings corresponding to the experimental speciments were analyzed. The data obtained were processed in such a way as to show the contribution of each element of the model to its total shear resistance. The test results give a clearer picture of the impact of vertical confiment on shear resistance, as well as the possible failure of the model, and help to provide guidance for the future design of this type of structure