Analysis of the performance of strut models to simulate the seismic behaviour of masonry infills in partially infilled RC frames

2020 ◽  
Vol 222 ◽  
pp. 111124
Author(s):  
Hossameldeen Mohamed ◽  
Xavier Romão
Keyword(s):  
Seismic Behaviour ◽  
Masonry Infills ◽  
Rc Frames ◽  
Infilled Rc Frames

Influence of Masonry Infills on the Shear Forces of RC Framed Structures

2016 ◽  
Vol 847 ◽  
pp. 361-368 ◽  
Author(s):  
Daniele Perrone ◽  
Vincenzo Saponaro ◽  
Marianovella Leone ◽  
Maria Antonietta Aiello
Keyword(s):  
Mechanical Properties ◽  
Young Modulus ◽  
Shear Forces ◽  
Seismic Behaviour ◽  
Masonry Infills ◽  
Rc Frames ◽  
Infill Panels ◽  
Rc Framed Structures ◽  
Global And Local ◽  
Modelling Approach

The damages observed during the earthquakes occurred in the last decades have clearly shown as the influence of infill panels on the seismic behaviour of Reinforced Concrete (RC) buildings should be taken into account; the global stiffness and the strength of the RC frames are significantly modified by the infills. In the present study the influence of infills in terms of shear forces has been analyzed by means of linear static analysis; a parametric study has been carried out to evaluate the behavior of infilled frames varying both modelling approach and the mechanical properties of the masonry infills. In terms of modelling approach the single and multi-strut models have been adopted; the Young modulus of masonry infills have been varied in the common range proposed in literature. The results show that multi-strut approach is able to predict both global and local behavior. In addition, the importance of the mechanical properties of masonry infills in the evaluation of the elastic period and shear force in the columns is underlined.

Lateral Load Behavior of an Open-Ground-Story RC Building with AAC Infills in Upper Stories

2016 ◽  
Vol 32 (3) ◽  
pp. 1653-1674 ◽  
Author(s):  
Supratik Bose ◽  
Durgesh C. Rai
Keyword(s):  
Brick Masonry ◽  
Hysteretic Behavior ◽  
Analytical Models ◽  
Rc Frame ◽  
Masonry Infills ◽  
Rc Frames ◽  
Open Ground ◽  
Strength And Stiffness ◽  
Infilled Rc Frames ◽  
Masonry Infilled Rc Frames

Autoclaved aerated concrete (AAC) masonry infills in upper stories can be beneficial for improving the seismic response of open-ground-story (OGS), reinforced concrete (RC)–frame buildings. Two reduced 1:2.5-scale models of single-story, single-bay RC frames with and without AAC infill masonry were tested for resistance properties and hysteretic behavior. Low strength and stiffness of AAC masonry, about half of the conventional brick masonry, led to improved load sharing between the infill and the frame, which helped an early development of frame yield mechanism for enhanced energy dissipation. Test results were used to evaluate the reliability of using existing strength and stiffness relations of conventional masonry infilled RC frames for AAC infilled frames. Analytical models were developed to predict the observed hysteretic behavior of tested specimens. Nonlinear analyses of a five-story, four-bay OGS-RC frame were performed for conventional brick masonry infills and relatively softer and weaker AAC infills in upper stories. The results indicated that the undesirable effect of weak/soft ground story mechanism of OGS-RC frames can be reduced to an acceptable level by using AAC infills in upper stories.

scholarly journals Numerical Modelling and Validation of the Response of Masonry Infilled RC Frames Using Experimental Testing Results

Buildings ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 182 ◽  
Author(s):  
Gianrocco Mucedero ◽  
Daniele Perrone ◽  
Emanuele Brunesi ◽  
Ricardo Monteiro
Keyword(s):  
Numerical Modelling ◽  
Experimental Testing ◽  
Experimental Tests ◽  
Masonry Infill ◽  
Masonry Infills ◽  
Rc Frames ◽  
Mediterranean Countries ◽  
Modelling Uncertainties ◽  
Infilled Rc Frames ◽  
Masonry Infilled Rc Frames

Reinforced concrete (RC) frame buildings with masonry infills represent one of the most common structural typologies worldwide. Although, in the past, masonry infills were frequently considered as non-structural elements and their interaction with the structure was neglected, earthquakes occurring over the last decades have demonstrated the important role of these elements in the seismic response of all RC-infilled building typologies. In this regard, the selection of the most suitable numerical modelling approaches to reproduce the hysteretic response of the masonry infills—and their interaction with the RC frames—is still an open issue. To deal with this issue, in this study, a macro-classification based on different available databases of experimental tests on infilled RC frames, is firstly proposed to understand the variability in the infill properties and the corresponding numerical modelling uncertainties. Five masonry infill types are selected as representative for the typical existing configurations in Italy and other Mediterranean countries. Three of those masonry infill types are then selected to carry out a more detailed analysis, namely their numerical modelling validation using experimental testing results, considering and comparing the main formulations available in the literature for the definition of the hysteretic behaviour of infills. From such a comparison, the model that minimizes the prediction error, according to specific features of the selected masonry infill, is identified for each masonry infill type.

Experimental Evaluation of Masonry-Infilled RC Frames

1996 ◽  
Vol 122 (3) ◽  
pp. 228-237 ◽  
Author(s):  
Armin B. Mehrabi ◽  
P. Benson Shing ◽  
Michael P. Schuller ◽  
James L. Noland
Keyword(s):  
Experimental Evaluation ◽  
Rc Frames ◽  
Infilled Rc Frames ◽  
Masonry Infilled Rc Frames

Seismic retrofit of masonry wall infilled RC frames through external post-tensioning

2017 ◽  
Vol 16 (3) ◽  
pp. 1487-1510 ◽  
Author(s):  
Gholamreza Soltanzadeh ◽  
Hanim Bin Osman ◽  
Mohammadreza Vafaei ◽  
Yousef Karimi Vahed
Keyword(s):  
Seismic Retrofit ◽  
Masonry Wall ◽  
Rc Frames ◽  
Post Tensioning ◽  
Infilled Rc Frames

scholarly journals Cyclic behavior of GFRP strengthened infilled RC frames with low and normal strength concrete

2019 ◽  
Vol 26 (1) ◽  
pp. 30-42 ◽  
Author(s):  
Mehmet Emin Arslan ◽  
Ahmet Durmuş ◽  
Metin Hüsem
Keyword(s):  
Lateral Loading ◽  
Cyclic Behavior ◽  
Test Results ◽  
Normal Strength Concrete ◽  
Strength Concrete ◽  
Rc Frames ◽  
Load Carrying ◽  
Concrete Blocks ◽  
Normal Strength ◽  
Infilled Rc Frames

AbstractThis paper presents the experimental behavior of plane, non-strengthened and glass fiber reinforced polymer (GFRP) strengthened infilled reinforced concrete (RC) frames with low strength concrete (LSC) and normal strength concrete (NSC) under lateral reversed cyclic loading. For this purpose, eight full-scale, one-bay, one-storey plane and infilled (brick and aerated concrete blocks which are commonly used in RC construction) RC frames with LSC and NSC were produced and in-plane lateral loading tests were carried out. Test results indicate that infill walls considerably change the behavior of frames by increasing rigidity and load carrying capacity. By contrast, GFRP fabric used for strengthening of infilled RC frames improves ductility, load carrying and energy dissipation capacity of infilled frames with LSC and NSC as well. After all the test results were evaluated together, a GFRP strengthened brick infilled frame demonstrated the best performance under cyclic lateral loading.

Performance of alternative CFRP retrofitting schemes used in infilled RC frames

2010 ◽  
Vol 24 (4) ◽  
pp. 596-609 ◽  
Author(s):  
E. Yuksel ◽  
H. Ozkaynak ◽  
O. Buyukozturk ◽  
C. Yalcin ◽  
A.A. Dindar ◽  
...  
Keyword(s):  
Rc Frames ◽  
Infilled Rc Frames
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