Experimental study on seismic behavior of RC frames strengthened with CFRP sheets

Zhu, Juntao; Wang, Xinling; Xu, Zhao‐Dong; Chenhui, Weng

doi:10.1016/j.compstruct.2011.01.007

Cited by 16 publications

(7 citation statements)

References 18 publications

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“…Firstly, In ll walls can change the IP load transfer path of frames and make the frames unable to realise its ductility. Therefore, the column ends, the beam ends, and the frame-column joints are prone to serious shear failure under a strong earthquake (Huang et al 2012). On the other hand, due to the fragile nature of masonry, the beam and column deformations would squeeze in ll walls which can cause the walls breakage, instability and eventually collapse (Tasligedik and Pampanin 2017).…”

Section: Experimental Programmentioning

confidence: 99%

Study on in-plane/out-of-plane seismic performance of masonry-infilled RC frame with openings and a new type of flexible connection

Zhang,

Ding,

Jin

et al. 2024

Bull Earthquake Eng

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When an earthquake occurs, the seriously damaged in ll walls have an adverse impact on frame due to in ll-frame interaction. Some codes suggest that the in ll walls should be isolated from frames or use a exible connection construction, but these applications may reduce OOP (out-of-plane) stability and increase the risk of OOP collapse. In this study, a new type of exible connection is adopted for the opening in ll wall-RC frame structures. The in ll wall-RC frame structures with rigid connection, traditionally exible connection and new type of exible connection in this context were examined experimentally and numerically, and their IP and OOP after IP (in-plane) damage seismic performance were compared. As a result of the study, the new type of exible connection effectively reduces IP damage of the in ll walls and undesirable in llframe interaction. Compared with rigid and traditional connection, the frame with new exible connection improves the energy dissipation capacity by about 37.8% and 3.5%, respectively. At the same time, the OOP strength and stiffness of the new exible connection increased by 119.8% and 104.2% in the same prior IP drift ratio than that of traditional exible connection. It is thought that the steel cable structure can improve the restraint of frames on in ll walls, which is bene cial to development of OOP horizontal arch mechanism.

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Section: Experimental Programmentioning

confidence: 99%

Study on in-plane/out-of-plane seismic performance of masonry-infilled RC frame with openings and a new type of flexible connection

Zhang,

Ding,

Jin

et al. 2024

Bull Earthquake Eng

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show abstract

“…Quick application, low weight over strength ratio and high resistance to tough environmental conditions are its advantages. Among some researchers, Ozcebe et al (2003), Antoniades et al (2005), El-Dakhakhni et al (2006), ElGawady et al (2006a), Erdem et al (2006), Altin et al (2008a), Garcia et al (2010), Akin et al (2011), Zhu et al (2011) and Hadigheh et al (2014) conducted experimental and analytical studies in which RC frames were strengthened using polymers. In all these studies, it was concluded that strengthening using polymers significantly increased lateral load and energy absorption capacities of the frames.…”

Section: Introductionmentioning

confidence: 99%

Comparison of seismic performances of reinforced concrete frames strengthened by different techniques

Baran

2021

Lat. Am. j. solids struct.

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The aim of this study is to compare the seismic performances of strengthening techniques applied to reinforced concrete (RC) non-ductile frames tested under the effects of seismic loads. In the experimental part of the study, one-third scale, one-bay, two-storey non-ductile hollow brick infilled RC frames were strengthened with five different techniques and tested under reversed cyclic lateral loads. One being reference, five of the frames were infilled with hollow bricks and plastered on both sides, one was strengthened with plain mortar, one was strengthened with steel fiber reinforced mortar, two were strengthened with precast RC plates. The last frame was strengthened with RC infill wall. Strengthening techniques increased strength and stiffnesses of the frames in the ranges from 57% to 189% and from 186% to 486% respectively. In the numerical analysis part, an existing RC non-ductile building located in Istanbul, strengthened with the techniques, were analyzed using a computer program. Numerical results were evaluated in terms of interstorey drift ratio together with the overall seismic performance of the building.

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“…For this reason, the use of bucklingrestrained braces (BRBs) that can increases the structural integrity and reduce the seismic response of structures by energy absorption, is considered as an effective way to improve the seismic performance of RC structures [9][10][11]. The use of steel and concrete jacketing and carbon fiber reinforced polymer (CFRPs) for the rehabilitation of RC structures efficiently increases ductility, energy dissipation capacity and the maximum strength [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear analysis to investigate effect of connection type on behavior of steel plate shear wall in RC frame

Bypour

Gholhaki

Kioumarsi

et al. 2019

Engineering Structures

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In the reinforced concrete (RC) structures with steel plate shear walls (SPSWs) as a lateral load resisting system, to obtain maximum capacity of SPSW, implementing proper connections play an important role to transfer force from wall to the frame. In this paper, four connection types are proposed and numerically investigated to transfer the tension field forces between SPSW and RC frame (RCF). Three types of connections are applicable for rehabilitating of existing RC structures and one type can be used for new construction. The behavior of connections has been evaluated using non-linear finite element analysis (NLFEA). Results of the specimens with different types of connections demonstrated that the use of SPSW in RCF with appropriate connections could provide excellent ductility as well as high load carrying capacity and initial stiffness by distributing the yielding zone in SPSW along the wall height.

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Experimental study on seismic behavior of RC frames strengthened with CFRP sheets

Cited by 16 publications

References 18 publications

Study on in-plane/out-of-plane seismic performance of masonry-infilled RC frame with openings and a new type of flexible connection

Study on in-plane/out-of-plane seismic performance of masonry-infilled RC frame with openings and a new type of flexible connection

Comparison of seismic performances of reinforced concrete frames strengthened by different techniques

Nonlinear analysis to investigate effect of connection type on behavior of steel plate shear wall in RC frame

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