Evaluation of Seismic Performance of Gravity Load Designed Reinforced Concrete Frames

Modeling of Infilled Frames With Openings

“…The comparison was done in terms of time-history maximum inter-storey drift and base shear, as can be seen in Figs. (8) and (9). In Fig.…”

“…The rationale behind neglecting infill walls in the design process is partly attributed to incomplete knowledge of the behaviour of quasi-brittle materials such as unreinforced masonry (URM), of the composite behaviour of the frame and the infill, as well as due to the lack of conclusive experimental and analytical results to substantiate a reliable design procedure for this type of structures, despite the extensive experimental efforts [3][4][5][6][7][8][9] and analytical investigations [10][11][12][13][14][15][16][17][18][19][20] over the past decades. Moreover, due to the large number of interacting parameters, if the infill wall is to be considered in the analysis and design stages, a modelling problem arises because of the many possible failure modes that need to be evaluated with a high degree of uncertainty.…”

Mathematical micromodeling of infilled frames: State of the art

“…These specimens were subjected to static monotonic or cyclic loading [28,134] [146,162,163,173] as well as seismic excitation through shake table testing [28,87,128,134]; Mosalam et al, 1998;[155,170,171,111,189,8,10]. The resulting experimental information (deformation profile, crack patterns, displacement, acceleration and base shear time history, modes of failure etc.)…”

“…Over the last five decades, a large number of experimental investigations [170,171,150,134,28,162,163] have been carried out in an attempt to describe the effect of infill walls on the overall structural response of RC frame structures. Reviews of the testing and modeling of masonry infilled frames until the late 1990s have been published by Moghaddam and Dowling [137] and Madan et al [128].…”

Utjecaj otvora na krutost ispunjenih okvira

“…Pri projektiranju konstrukcija načinjenih od okvira sa zidanom ispunom, problemi prilikom modeliranja nastaju zbog brojnih, još uvijek neshvaćenih mehanizama uzrokovanih interakcijom okvira i ispune, kao što su razni oblici sloma zidane ispune i okvira, veliki broj utjecajnih parametara, kompozitno ponašanje ispunjenog okvira itd. Brojna analitička [1][2][3][4][5][6][7][8][9][10] i eksperimentalna [11][12][13][14][15][16][17][18][19][20][21] istraživanja provedena su u svrhu predlaganja racionalnog postupka projektiranja konstrukcija načinjenih od okvira sa zidanom ispunom. Iz tih su istraživanja proizišli modeli jednostrukih ili višestrukih ekvivalentnih tlačnih dijagonala koji su definirani u propisima za projektiranje [22][23][24][25] da bi se u obzir uzeo utjecaj zidane ispune na horizontalnu nosivost armiranobetonskih okvira.…”