NONLINEAR SEISMIC ANALYSIS OF INFILLED RC FRAMES WITH AN EQUIVALENT STRUT MODEL

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.

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Performance of alternative CFRP retrofitting schemes used in infilled RC frames

Construction and Building Materials ◽

10.1016/j.conbuildmat.2009.09.005 ◽

2010 ◽

Vol 24 (4) ◽

pp. 596-609 ◽

Cited By ~ 33

Author(s):

E. Yuksel ◽

H. Ozkaynak ◽

O. Buyukozturk ◽

C. Yalcin ◽

A.A. Dindar ◽

...

Keyword(s):

Rc Frames ◽

Infilled Rc Frames

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Experimental and Finite Element Analytical Investigation of Seismic Behavior of Full-Scale Masonry Infilled RC Frames

Journal of Earthquake Engineering ◽

10.1080/13632469.2016.1138171 ◽

2016 ◽

Vol 20 (7) ◽

pp. 1171-1198 ◽

Cited By ~ 18

Author(s):

Changhai Zhai ◽

Jingchang Kong ◽

Xiaoming Wang ◽

ZhiQiang Chen

Keyword(s):

Finite Element ◽

Seismic Behavior ◽

Analytical Investigation ◽

Full Scale ◽

Rc Frames ◽

Infilled Rc Frames ◽

Masonry Infilled Rc Frames

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Numerical Modeling of Masonry-infilled RC Frame

The Open Construction and Building Technology Journal ◽

10.2174/1874836801913010135 ◽

2019 ◽

Vol 13 (1) ◽

pp. 135-148 ◽

Cited By ~ 2

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).

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