Robust Calibration of Macro-Models for the In-Plane Behavior of Masonry Infilled RC Frames

Mohamed, Hossameldeen; Romão, Xavier

doi:10.1080/13632469.2018.1517703

Cited by 12 publications

(7 citation statements)

References 34 publications

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“…Still, for buildings likely to undergo floor-to-floor pounding, the results of the current study indicate that the fragility functions developed for buildings without considering pounding can be used since they are not likely to lead to significant errors. Nevertheless, further research studies similar to the one presented herein should be carried out to analyse the behaviour of other adjacent building configurations and consider the influence of other parameters, such as the presence of infill walls, given their impact on the global performance of RC structures [103][104][105][106][107][108][109][110], in order to generalise these conclusions.…”

Section: Discussionmentioning

confidence: 99%

Seismic Fragility Functions for Non-Seismically Designed RC Structures Considering Pounding Effects

Mohamed

Romão

2021

Buildings

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The proposed study develops fragility functions for non-seismically designed reinforced concrete structures considering different pounding configurations. The study addresses an existing research gap, since large-scale seismic risk assessment studies involving the seismic performance assessment of building portfolios usually do not involve fragility functions accounting for the possibility of pounding. The selected structures include configurations involving different separation distance values and exhibiting floor-to-floor pounding, floor-to-column pounding, pounding between structures with a significant height difference, and pounding between structures with a significant mass difference. The behaviour of these pounding configurations was analysed using incremental dynamic analysis and compared with that of the corresponding control cases (i.e., individual structures with no interaction with other structures). The results indicate the type of failure mechanism that contributes to the global collapse of the different configurations and the influence of the separation distance. Results highlight the main differences between the expected performance of different pounding configurations with respect to the occurrence of the failure mechanism that governs their collapse. Finally, results indicate that large-scale seismic risk assessment studies should consider fragility functions accounting for different pounding configurations when the possibility of pounding is not negligible, except in cases involving floor-to-floor pounding.

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Section: Discussionmentioning

confidence: 99%

Seismic Fragility Functions for Non-Seismically Designed RC Structures Considering Pounding Effects

Mohamed

Romão

2021

Buildings

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“…The mechanical properties of the diagonal elements are defined from the behavior of the masonry infill. The masonry infill response is subtracted from the behavior of the infilled frame based on the hypotheses that consider the behavior of the infilled frame as a combination of its two components frame and infill [Mohamed and Xavier (2018)]. This method is used by many researchers such as Asteris et al (2016), Liberatore et al (2018), De Risi et al (2018), and Mohamed and Xavier (2018.…”

Section: Macro-and Meso-modelsmentioning

confidence: 99%

“…The masonry infill response is subtracted from the behavior of the infilled frame based on the hypotheses that consider the behavior of the infilled frame as a combination of its two components frame and infill [Mohamed and Xavier (2018)]. This method is used by many researchers such as Asteris et al (2016), Liberatore et al (2018), De Risi et al (2018), and Mohamed and Xavier (2018. The infill force-displacement curves are projected to the diagonal direction to define the stress-strain relationships.…”

Section: Macro-and Meso-modelsmentioning

confidence: 99%

Comparison Between Numerical Modeling Approaches of Infilled Frames Under In-Plane Load

Bouarroudj

Boudaoud

2022

Front. Built Environ.

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In the last few decades, important attention was given to infill masonry panels due to their worldwide uses. Many experimental and numerical studies were conducted to study their effect on the behavior of RC frames. In general, three modeling strategies are widely applied to model infill masonry, namely, micro-models, meso-models, and macro-models. This study investigates the accuracy of the width models to predict the behavior of masonry infills using the meso-modeling technique. To this aim, the masonry infills are modeled as an equivalent homogenized diagonal element in order to represent the diagonal action of masonry infills. The width models used to determine the width of the diagonal strut are used in meso-modeling. In addition, the study contains comparisons between different modeling techniques to predict the global behavior of the infilled frames. Experimental tests conducted on two infilled frames from the literature are considered to calibrate the numerical simulations. The results indicate that the micro-modeling approach gives a good agreement with the experimental tests in terms of lateral force and deformation shapes, the related errors varying between 0.12 and 2.8%. Using single strut models, the differences between numerical and experimental results vary from 1.1 to 20%. On the other hand, the errors obtained from multiple strut models are varying between 9 and 40%.

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“…Finally, it has been assumed that columns' bases are fixed (i.e., the soil-structure interaction SSI has been discarded). The ability of the modelling strategy to realistically capture the real behaviour of RC buildings has been proved in literature (e.g., see [27][28][29] among others).…”

Section: Numerical Modelling Of Rc Elementsmentioning

confidence: 99%

Assessment of seismic vulnerability of RC frames at the end-of-row of buildings with floor-to-floor alignment using multi-strips analysis MSA

Mohamed

Elyamany

2022

JES. Journal of Engineering Sciences

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During earthquakes' excitation, adjacent buildings start vibrating out of phase (in different directions) leading to collisions with each other causing severe damage in a phenomenon known as structural pounding. The proposed study analyses the pounding effects for several case studies representing one of the critical pounding configurations found in the Egyptian buildings taxonomy which is building at the end-of-row of buildings. The multi-strip analysis approach (MSA) using fiftyground motion records has been adopted to reduce the computational effort required for probabilistic performance assessment. The obtained structural performances of the studied cases, expressed in the form of fragility functions, were compared with the corresponding reference cases (i.e., structures with no adjacent buildings). The results provide insights into the type of failure mechanism that contributes to the global collapse of the studied cases. Fragility functions are also developed for different limit states based on these results to extract further conclusions regarding the overall influence of pounding. Results highlight the main differences between the expected performance of the poundinginvolved cases compared to the reference cases. Finally, results indicate the relevance of the pounding effect on the overall performance of the considered cases therefore large-scale seismic risk assessment studies should consider fragility functions accounting for different pounding configurations.

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Robust Calibration of Macro-Models for the In-Plane Behavior of Masonry Infilled RC Frames

Cited by 12 publications

References 34 publications

Seismic Fragility Functions for Non-Seismically Designed RC Structures Considering Pounding Effects

Seismic Fragility Functions for Non-Seismically Designed RC Structures Considering Pounding Effects

Comparison Between Numerical Modeling Approaches of Infilled Frames Under In-Plane Load

Assessment of seismic vulnerability of RC frames at the end-of-row of buildings with floor-to-floor alignment using multi-strips analysis MSA

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