Seismic behavior of a full-scale RC frame repaired using CFRP laminates

Balsamo, Alberto; Colombo, Alessandro; Manfredi, Gaetano; Negro, Paolo; Prota, Andrea

doi:10.1016/j.engstruct.2005.01.002

Cited by 125 publications

(46 citation statements)

References 7 publications

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“…Several experimental tests have been conducted to investigate the behaviour of deficient full-scale RC buildings strengthened with FRPs using pseudo-dynamic [3][4][5][6][7] or quasi-static lateral load tests [8]. Based on the results of these experiments, some analytical models were developed to predict the seismic behaviour of deficient and strengthened RC buildings [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Seismic behaviour of deficient RC frames strengthened with CFRP composites

Garcia

Hajirasouliha

Pilakoutas

2010

Engineering Structures

118

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A full-scale two-storey RC building with poor detailing in the beam-column joints was tested on a shake table as part of the European research project ECOLEADER. After the initial tests which damaged the structure, the frame was strengthened using carbon fibre reinforced materials (CFRPs) and re-tested. This paper investigates analytically the efficiency of the strengthening technique at improving the seismic behaviour of this frame structure. The experimental data from the initial shake table tests are used to calibrate analytical models. To simulate deficient beam-column joints, models of steel-concrete bond-slip and bond-strength degradation under cyclic loading are considered. The analytical models are used to assess the efficiency of the CFRP rehabilitation using a set of medium to strong seismic records. The CFRP strengthening intervention enhanced the behaviour of the substandard beam-column joints, and resulted in substantial improvement of the seismic performance of the damaged RC frame. It is shown that, after the CFRP intervention, the damaged building would experience on average 65% less global damage compared to the original structure if it was subjected to real earthquake excitations.2

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Section: Introductionmentioning

confidence: 99%

Seismic behaviour of deficient RC frames strengthened with CFRP composites

Garcia

Hajirasouliha

Pilakoutas

2010

Engineering Structures

118

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“…Consequently, it showed a high displacement capacity without a great loss in the durability of the reinforced structure. Great damage was also not observed in reinforced elements (Balsamo, 2005).…”

Section: Introductionmentioning

confidence: 74%

Analytical investigation of a three-dimensional FRP-retrofitted reinforced concrete structure's behaviour under earthquake load effect in ANSYS program

Altun

Birdal

2012

Nat. Hazards Earth Syst. Sci.

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Abstract. In this study, a 1 : 3 scaled, three-storey, FRP (Fiber Reinforced Polymer) retrofitted reinforced concrete model structure whose behaviour and crack development were identified experimentally in the laboratory was investigated analytically. Determination of structural behaviour under earthquake load is only possible in a laboratory environment with a specific scale, as carrying out structural experiments is difficult due to the evaluation of increased parameter numbers and because it requires an expensive laboratory setup. In an analytical study, structure was modelled using ANSYS Finite Element Package Program (2007), and its behaviour and crack development were revealed. When experimental difficulties are taken into consideration, analytical investigation of structure behaviour is more economic and much faster. At the end of the study, experimental results of structural behaviour and crack development were compared with analytical data. It was concluded that in a model structure retrofitted with FRP, the behaviour and cracking model can be determined without testing by determining the reasons for the points where analytical results are not converged with experimental data. Better understanding of structural behaviour is analytically enabled with the study.

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“…Antonopoulos and Triantafillou (2002) and Bing Li et al (2010) investigated the rehabilitation of the concrete connections with carbon and glass composites and compared the cyclic behaviors. Research of Balsamo et al (2005) about the effect of the CFRP laminates on the behavior of a full scale structure with dual system of moment frame and shear wall under cyclic and seismic loading have shown the improvement of the structures' behavior.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Damaged Exterior RC Beam-Column Joints Strengthened by CFRP Composites

Beydokhty

Shariatmadar

2016

Lat. Am. j. solids struct.

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This paper presents an experimental investigation on the behavior of retrofitted beam-column joints subjected to reversed cyclic loading. The experimental program comprises 8 external beamcolumn joint connection subassemblages tested in 2 phases; one was the damaging phase and second was the repairing phase. The Beam-column joints were designed only for gravity loads. The joints had no beam-column joint transverse reinforcement and special stirrups in beam and column critical zones. These NonSeismically designed (NS) joints were damaged with different levels at the first phase of the experiment. In the second phase, the damaged joints were strengthened with externally bonded carbon-fibre-reinforced polymers (C-FRP) sheets. From the observed responses of the examined specimens it can be deduced that the technique of externally bonded retrofitting (EBR) using C-FRP sheets is appropriate for the rehabilitation of the joints seismic capacity. This technique had a significant improvement of the energy dissipation and the performance level and finally it leads to improved type of damages compared with the damage modes of the specimens during the initial loading. Shortcomings of the application of C-FRP sheets for practical use are also pointed out.

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Seismic behavior of a full-scale RC frame repaired using CFRP laminates

Cited by 125 publications

References 7 publications

Seismic behaviour of deficient RC frames strengthened with CFRP composites

Seismic behaviour of deficient RC frames strengthened with CFRP composites

Analytical investigation of a three-dimensional FRP-retrofitted reinforced concrete structure's behaviour under earthquake load effect in ANSYS program

Behavior of Damaged Exterior RC Beam-Column Joints Strengthened by CFRP Composites

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