scholarly journals VALIDATION OF ANALYTICAL MODELS FOR THE ASSESSMENT OF BRICK-INFILLED RC FRAMES STRENGTHENED WITH FRPS

2014 ◽  
Author(s):  
C. Spyrakos ◽  
C. Maniatakis ◽  
I. Psycharis ◽  
E. Smyrou ◽  
P. Asteris
Keyword(s):  
Analytical Models ◽  
Rc Frames ◽  
Infilled Rc Frames

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.

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

scholarly journals Numerical Modeling of Masonry-infilled RC Frame

2019 ◽  
Vol 13 (1) ◽  
pp. 135-148 ◽  
Author(s):  
Christiana A. Filippou ◽  
Nicholas C. Kyriakides ◽  
Christis Z. Chrysostomou
Keyword(s):  
Cyclic Loading ◽  
Numerical Model ◽  
Constitutive Models ◽  
Control Analysis ◽  
Rc Frame ◽  
Initial Stiffness ◽  
Element Analysis ◽  
Rc Frames ◽  
Rc Frame Structures ◽  
Infilled Rc Frames

Background: The behavior of masonry-infilled Reinforced Concrete (RC) frame structures during an earthquake, has attracted the attention of structural engineers since the 1950s. Experimental and numerical studies have been carried out to investigate the behavior of masonry-infilled RC frame under in-plane loading. Objective: This paper presents a numerical model of the behavior existing masonry-infilled RC frame that was studied experimentally at the University of Patra. The objective of the present study is to identify suitable numerical constitutive models for each component of the structural system in order to create a numerical tool to model the masonry infilled RC frames in-plane behavior by accounting the frame-infill separation. Methods: A 2D masonry-infilled RC frame was developed in DIANA Finite Element Analysis (FEA) software and an eigenvalue and nonlinear structural cyclic analyses were performed. It is a 2:3 scale three-story structure with non-seismic design and detailing, subjected to in-plane cyclic loading through displacement control analysis. Results: There is a good agreement between the numerical model and experimental results through a nonlinear cyclic analysis. It was found that the numerical model has the capability to predict the initial stiffness, the ultimate stiffness, the maximum shear-force capacity, cracking- patterns and the possible failure mode of masonry-infilled RC frame. Conclusion: Therefore, this model is a reliable model of the behavior of masonry-infilled RC frame under cyclic loading including the frame-infill separation (gap opening).

scholarly journals On the modelling of infilled RC frames through strut models

2017 ◽  
Vol 4 (1) ◽  
pp. 1371578 ◽  
Author(s):  
Marco Tanganelli ◽  
Tommaso Rotunno ◽  
Stefania Viti ◽  
Paolo Zampieri
Keyword(s):  
Rc Frames ◽  
Infilled Rc Frames
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