Optimal performance-based design of FRP jackets for seismic retrofit of reinforced concrete frames

Zou, Xiaokang; Teng, Jinguang; Lorenzis, Laura De; Xia, Senlin

doi:10.1016/j.compositesb.2006.07.016

Cited by 71 publications

(24 citation statements)

References 21 publications

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“…For example, FRP shear reinforcement (wraps) may be deployed to prevent the shear failure of columns and FRP flexural reinforcement of columns may be used to reduce drift ratios of a frame structure, leading to enhanced strength and ductility (El-Sokkary and Galal 2009, Choi et al2014). An important topic of research is the choice of appropriate choice strengthening schemes and locations for optimal performance of the whole structure (Zou et al 2007). …”

Section: Frp-strengthened Rc Frame Structuresmentioning

confidence: 99%

A review of FRP strengthened concrete structures under extreme loading

Chen¹,

Xie

Tao

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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Many concrete structures are vulnerable to extreme loadings such as accidental impact, terrorist attack and earthquake disasters. Retrofitting of existing concrete structures for enhanced performance under these loadings has been an important topic of research for a long time, especially since the 911 terrorist attack. Among the different retrofitting techniques, external bonding of fibre reinforced polymer (FRP) composites has been a popular one. This paper presents a brief review of recent research on FRP strengthened concrete structures under blast, impact, earthquake and cyclic loading.

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Section: Frp-strengthened Rc Frame Structuresmentioning

confidence: 99%

A review of FRP strengthened concrete structures under extreme loading

Chen¹,

Xie

Tao

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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“…Zou et al (2007;Choi et al, 2014), optimization procedures have been also proposed for the enhancement of the seismic performance of retrofitted RC frames. Zou et al (2007) discussed the optimal performancebased design for FRP reinforced RC frames.…”

Section: Introduction and Research Objectivesmentioning

confidence: 99%

Multi-Objective Optimization of FRP Jackets for Improving the Seismic Response of Reinforced Concrete Frames

Chisari¹,

Bedon²

2016

American Journal of Engineering and Applied Sciences

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Abstract:In this study, a multi-objective Genetic Algorithm (GA) optimization procedure is proposed for the seismic retrofitting of Reinforced Concrete (RC) building frames via Fiber-Reinforced Polymer (FRP) jackets. The optimization problem is solved via numerically efficient but accurate Finite-Element (FE) models able to take into account the strengthening and ductility increase contribution for a given FRP jacketing configuration. Based on a reference RC frame case study, an optimization approach aimed to maximize the frame ductility and minimize the FRP volume/cost is proposed, by taking into account different FRP jackets thicknesses for the internal and external columns and well as for each separate frame floor. In doing so, careful consideration is paid also to the expected collapse mechanism for the frame and the approach to embed a further objective able to control the collapse mechanism into the procedure is described. The results show the potential of the approach, which not only provides the entire Pareto Front of the multi-objective optimization problem, but also allows for general considerations about the influence of the design variables on the response of a given RC building.

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“…They possess an inherently low resistance to horizontal loads, resulting in large inelastic deformations (Zou and Teng, 2007) during recent earthquakes due to insufficient lateral load carrying capacity. For those structures constructed with insufficient strength and ductility, the required stiffness was not provided.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the behaviour of nonductile infilled RC frames strengthened with external mesh reinforcement and plaster composite

Korkmaz

Kamanli

Korkmaz

et al. 2010

Nat. Hazards Earth Syst. Sci.

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Abstract. The aim of this paper is to report on an experimental study about Turkish Earthquake Code on suggested strengthening method. The proposed method uses existing brick infill walls and the strengthening is done with the application of external mesh reinforcement and plaster. 5 nonductile 1/2 scaled, one bay, two storey RC specimens were tested under a reversed cyclic loading. The first two specimens were reference specimens and the other ones were strengthened with the proposed method. The specimens contained several design and construction mistakes such as low concrete quality and improper steel detailing. Strength, stiffness and storey drifts of the test specimens were measured. The results of the test on these frames were compared with the reference specimens. The effects of the reinforced mesh plaster application for strengthening on behaviour, strength, stiffness, failure mode and ductility of the specimens were investigated. Unexpected failure modes were observed during the testing and the results were summarized in this paper.

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Optimal performance-based design of FRP jackets for seismic retrofit of reinforced concrete frames

Cited by 71 publications

References 21 publications

A review of FRP strengthened concrete structures under extreme loading

A review of FRP strengthened concrete structures under extreme loading

Multi-Objective Optimization of FRP Jackets for Improving the Seismic Response of Reinforced Concrete Frames

Experimental study on the behaviour of nonductile infilled RC frames strengthened with external mesh reinforcement and plaster composite

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