Effect of Lintel Beam on Seismic Response of Reinforced Concrete Buildings with Semi-Interlocked and Unreinforced Brick Masonry Infills

Shendkar, Mangeshkumar R.; Kontoni, Denise‐Penelope N.; Mandal, Santanu; Maiti, Pabitra Ranjan; Gautam, Dipendra

doi:10.3390/infrastructures6010006

Cited by 10 publications

(1 citation statement)

References 23 publications

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“…In this study, the damage patterns of all structural models were also compared. For this purpose, the performance criteria based on the material strain are used herein as follows: (i) unconfined concrete's crushing strain limit: 0.0035, (ii) confined concrete's crushing strain limit: 0.008, (iii) yield strain limit for structural steel: 0.0025, and (iv) fracture strain limit for steel: 0.06 [44][45][46][47]. e values of the damage pattern for Model IV (bare frame) are given in Figure 11.…”

Section: Damage Patternmentioning

confidence: 99%

Influence of Masonry Infill on Seismic Design Factors of Reinforced-Concrete Buildings

Shendkar

Kontoni

Işık

et al. 2022

Shock and Vibration

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Infill walls are the most common separator panels in typical reinforced-concrete (RC) frame structures. It is crucial to investigate the influence of the infill walls on the earthquake behavior of RC frames. The load resistance of infill materials was often not taken into account in the designing phase, whereas the infill walls have significant contributions to the structural behavior under lateral and vertical loadings. A three-dimensional 4-story RC building is designed, and in order to make a realistic model, different infill walls configurations were taken into account with the openings in the infill. Four different models were created for structural analysis for infill wall effects, namely, full RC infilled frame (Model I), corner infill at ground story RC infilled frame (Model II), open ground story RC infilled frame (Model III), and bare RC frame (Model IV). Static adaptive pushover analysis has been performed for all structural models by using the SeismoStruct software. The double strut nonlinear cyclic model was used for modeling the infill walls. In this study, three different compressive strengths of infill walls are taken into consideration, and the effects on seismic design factors (namely, the response reduction factor, the ductility, the overstrength factor, and the deflection factor) are calculated. The obtained values of the response reduction factor (R) are compared with the given values in the BIS code. The results show that the R factors of all RC infilled frames are decreased when the compressive strength of the masonry infill reduces. However, the R values of bare frames are less than the corresponding values recommended in the BIS code. It is worth noting that the National Earthquake Hazards Reduction Program (NEHRP) provisions underestimate the deflection factors of the reinforced-concrete (RC) frames according to the evaluated deflection factors of the herein studied RC frames.

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Section: Damage Patternmentioning

confidence: 99%