Assessment of masonry infilled reinforced-concrete frames with openings

Armirano-betonski okviri sa zidanim ispunom, naročito uz prisustvo otvora, nedovoljno su istraženi konstruktivni elementi. Eksperimentalno smo istražili utjecaj vrste i položaja otvora na seizmički odgovor armirano-betonskih okvira sa zidanim ispunom. Uvedeni su korekcijski faktori kojima se u obzir uzima utjecaj vrste i položaja otvora u zidanom ispunu u odnosu na okvir bez ispuna, u svrhu poboljšanja modela zamjenske tlačne dijagonale. Poboljšanje omogućava uporabu a-b okvira sa zidanim ispunom, s i bez otvora, kao konstruktivnog elementa. Primjena će omogućiti kvalitetniji seizmički proračun a-b okvira sa zidanim ispunom.Reinforced-concrete (R/C) frames infilled with masonry wall, especially with the presence of an opening, are insufficiently explored structural elements. We have experimentally investigated influence of the opening’s type and position to the lateral response of reinforced-concrete frames with masonry infill. Correction factors, that take into account influence of the opening’s type and position in the masonry infill in relation to frame without infill, are defined as an improvement of the equivalent diagonal compression strut model. This improvement enables use of R/C frames with masonry infill, with or without openings, as structural element. Its use would result in better seismic assessment of the masonry infilled R/C frames