Seismic Retrofit of Joints of a Full-Scale 3D Reinforced Concrete Frame with FRP Composites

Cosgun, Cumhur; Cömert, Mustafa; Demir, Cem; İlki, Alper

doi:10.1061/(asce)cc.1943-5614.0000923

Cited by 25 publications

(7 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Therefore, a number of studies have been conducted on seismic retrofitting methods that can mitigate the disadvantages of the existing seismic retrofitting approaches. The research has focused on seismic retrofitting methods using fiber-reinforced polymer (FRP) [2,[4][5][6][7][8], steel beams [3,9], and dampers [10][11][12][13][14]. Although new seismic retrofitting methods have been studied to improve the existing retrofitting methods, there are some drawbacks; the drawbacks of the seismic retrofitting method using FRP are the relatively high cost of epoxies, inability to attach on wet surfaces, difficulty conducting post-earthquake assessment of the damage suffered by the reinforced concrete that is behind the undamaged FRP jackets, and so on [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Seismic Retrofitting of Reinforced Concrete Frames Using Welded Concrete-Filled Steel Tubes

Kim

Lee

2020

Applied Sciences

View full text Add to dashboard Cite

Buildings constructed with non-seismic details are at risk of damage and collapse when an earthquake occurs due to a lack of strength, stiffness, and ductility. For reinforced concrete (RC) moment-resisting frames, seismic retrofitting methods that can enhance strength or ductility should be applied. However, such strategies have many disadvantages related to constructability, serviceability, securing integrity, and cost. In this paper, a welded concrete-filled steel tube (WCFST) system was examined in order to resolve the problems of the existing seismic retrofitting methods for RC moment-resisting frames. To evaluate the seismic performance of the proposed system, two specimens, one with non-seismic details and another reinforced with a WCFST seismic system, were manufactured for the cyclic loading tests. As a result of the experiments, the specimen retrofitted with the WCFST system showed maximum load, effective stiffness, and energy dissipation capacity values approximately 3, 2, and 2.5 times greater, respectively, than those obtained from the existing reinforced concrete frame specimen. The experimental results indicate that the proposed WCFST system is expected to be effective at improving the seismic performance by enhancing both the strength of the existing reinforced concrete frame structures and the dissipation of the seismic energy.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental Study on Seismic Retrofitting of Reinforced Concrete Frames Using Welded Concrete-Filled Steel Tubes

Kim

Lee

2020

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…6a. Other approaches may utilize FRPs to be adhered diagonally at the joints [23], shown in Fig. 6b.…”

Section: Rc Beam-column Joint Strengthening Applicationsmentioning

confidence: 99%

State-of-art summary of the strength hierarchy assessment and its applications

Tasligedik¹

2023

JSEAM

View full text Add to dashboard Cite

Strength hierarchy assessment is a method developed to be able to identify the governing failure mechanisms at reinforced concrete (RC) beam-column joints. The main failures that can be identified in this method are: i) beam plastic hinge; ii) column plastic hinge/shear failure; iii) beam-column joint shear failure. Through the identification of the governing failure mode in a joint, the validity of the capacity design principles can be checked for the considered RC beam-column joint. The obtained observations can then be used in finding the most optimal repair/strengthening application. This method has been going through updates and developments in the last decade and new applications have emerged. In this article, a state-of-the-art summary of the procedure is reported with its most recent updates as well as its practical engineering applications.

show abstract

“…Adibi et al [ 79 ] employed steel angles prestressed by crossties to retrofit exterior concrete beam-column connections with hook-ended plain bars seismically. Cosgun et al [ 80 ] examined the RC frames’ experimental behavior with FRP strengthening to check FRP’s suitability for avoiding joint failure. D’Ayala et al [ 81 ] also evaluated the application of FRP strengthening for plain bar-reinforced interior joints.…”

Section: Possible Applicationsmentioning

confidence: 99%

A Comprehensive Review of Incorporating Steel Fibers of Waste Tires in Cement Composites and Its Applications

et al. 2022

View full text Add to dashboard Cite

Accumulating vast amounts of pollutants drives modern civilization toward sustainable development. Construction waste is one of the prominent issues impeding progress toward net-zero. Pollutants must be utilized in constructing civil engineering structures for a green ecosystem. On the other hand, large-scale production of industrial steel fibers (ISFs) causes significant damage to the goal of a sustainable environment. Recycled steel fibers (RSFs) from waste tires have been suggested to replace ISFs. This research critically examines RSF’s application in the mechanical properties’ improvement of concrete and mortar. A statistical analysis of dimensional parameters of RSFs, their properties, and their use in manufacturing various cement-based composites are given. Furthermore, comparative assessments are carried out among the improvements in compressive, split tensile, and flexural strengths of plain and RSF-incorporated concrete and mortar. In addition, the optimum contents of RSF for each strength property are also discussed. The influence of RSFs parameters on various strength properties of concrete and mortars is discussed. The possible applications of RSF for various civil engineering structures are reviewed. The limitations and errors noticed in previous review papers are also outlined. It is found that the maximum enhancement in compressive strength (CS), split tensile strength (STS), and flexure strength (FS) are 78%, 149%, and 157%, respectively, with the addition of RSF into concrete. RSF increased cement mortars’ CS, STS, and FS by 46%, 50.6%, and 69%, respectively. The current study encourages the building sector to use RSFs for sustainable concrete.

show abstract

Seismic Retrofit of Joints of a Full-Scale 3D Reinforced Concrete Frame with FRP Composites

Cited by 25 publications

References 31 publications

Experimental Study on Seismic Retrofitting of Reinforced Concrete Frames Using Welded Concrete-Filled Steel Tubes

Experimental Study on Seismic Retrofitting of Reinforced Concrete Frames Using Welded Concrete-Filled Steel Tubes

State-of-art summary of the strength hierarchy assessment and its applications

A Comprehensive Review of Incorporating Steel Fibers of Waste Tires in Cement Composites and Its Applications

Contact Info

Product

Resources

About