The Effects of Infill Walls Located in Plan on Buildings Performance

Akyürek, Osman; Tekeli, Hamide; Demir, Fuat

doi:10.29137/umagd.419660

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…In general, only the weight of the infill wall materials is taken into consideration, and the other strength parameters are ignored. e structural behavior of such frames considerably depends on the dynamic characteristics, including stiffness, bearing capacity, period, and damping level of the related infill walls loaded laterally and vertically [3][4][5][6]. Out-of-plane and in-plane infill walls damage are commonly seen after destructive earthquakes [7,8].…”

Section: Introductionmentioning

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: Introductionmentioning

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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Determination of the seismic vulnerability of infilled RC buildings according to the Quadrants assessment method

Shendkar,

Kontoni,

Işık

2023

Asian J Civ Eng

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The earthquake vulnerability of the buildings has become more important after significant structural damages due to seismic events. The Quadrants assessment method is one of the effective procedures for the determination of the earthquake performance of the buildings. In this study, the impact of the infill walls on the structural vulnerability of reinforced concrete (RC) buildings was investigated using this method. Five different building models are designed such as bare RC frame, RC frame with strut infill as per field test (open ground story), RC frame with strut infill as per ASCE-41-06 (open ground story), full RC frame with strut infill as per field test (fully infilled), and full RC frame with strut infill as per ASCE-41-06 (fully infilled). All structural analyses were performed using an adaptive pushover analysis in the SeismoStruct software. The infills in the studied RC buildings were modeled as an equivalent strut as per field test or ASCE-41-06 code. The influence of different building models on the performance point, overstrength factor, response reduction factor, and ductility reduction factor was evaluated. The performance point is calculated as per the ASCE-41-06 code which is based on the “displacement coefficient method” and the application of the performance point is used to decide on the intervention/retrofit of RC structures through the “Quadrants assessment method”. In this study, the results depict that the strut width of the infill as per ASCE-41-06 is underestimated as compared to field test. Thus, the impact of the strut width is quantified on the seismic design parameters. It is concluded that there is a need for intervention/retrofit of the bare frame and open ground story RC infilled frame based on the “Quadrants assessment method” due to the absence of infills and the calculated values of the response reduction factor (R) obtained for the infilled RC building models are higher than the bare frame structure due to presence of infills.

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Investigation of the Effects of Infill Walls on Behavior in Reinforced Concrete Buildings under the Influence of Earthquake

GARİP,

DİBEKOĞLU

2022

UMAG

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Betonarme binalarda dolgu duvarlar, yatay dayanıma katkıları göz ardı edilerek çizgisel yük olarak hesaplara dahil edilmektedir. Bu nedenle tasarım aşamasında öngörülen yapı davranışı gerçeği yansıtmamakta ve deprem tehlikesinin yüksek olduğu Ülkemizde dolgu duvarlar yıkıcı etkilere neden olabilmektedir. Bu çalışmada betonarme binalarda dolgu duvar etkilerinin incelenmesi için farklı özelliklere sahip 6 adet bina modeli tasarlanmıştır. Dolgu duvar etkileri ile meydana gelebilecek olası yumuşak kat düzensizliğini ortaya koyabilmek için iki faklı zemin kat yüksekliği dikkate alınmıştır. Çalışma kapsamında boş çerçeve, çizgisel yüklü çerçeve ve çizgisel yük + eşdeğer basınç çubuklu çerçeve olmak üzere üç farklı betonarme bina modeli tasarlanmıştır. Betonarme bina modellerinin doğrusal ve zaman tanım alanında doğrusal olamayan analizleri gerçekleştirilmiştir. Çizgisel yük + eşdeğer basınç çubuklu sitemlerin boş ve çizgisel yüklü sistemlerle kıyaslanması durumunda periyot değerlerinde, tepe noktası yerdeğiştirmelerinde ve etkin göreli kat ötelenme değerlerinde azalma, spektral ivme değerlerinde ve taban kesme kuvvetlerinde artma ve yumuşak kat düzensizliği oluşumu belirlenmiştir. Dolayısıyla, betonarme bina modellerinde dolgu duvarların eşdeğer basınç çubuklu olarak modellenmesinin yapı davranışı açısından daha doğru sonuçlar vereceği kanaatine varılmıştır.

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The Effects of Infill Walls Located in Plan on Buildings Performance

Cited by 3 publications

References 3 publications

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

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

Determination of the seismic vulnerability of infilled RC buildings according to the Quadrants assessment method

Investigation of the Effects of Infill Walls on Behavior in Reinforced Concrete Buildings under the Influence of Earthquake

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