Shear behavior of exterior reinforced concrete beam-column joints

Alemdar, Fatih; Sezen, Halil

doi:10.12989/sem.2010.35.1.123

Cited by 15 publications

(6 citation statements)

References 2 publications

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“…Beam-column joints are designed to transfer moments and resist lateral loads within the beam-column moment frame system. Transverse reinforcement needs to be provided within the joint region to resist shear forces and confine concrete [17]. Some buildings were damaged in Simav because of insufficient lateral reinforcement in the beam-column joints (Figure 13).…”

Section: Inadequate Transverse Reinforcementmentioning

confidence: 99%

The 2011 Earthquake in Simav, Turkey and Seismic Damage to Reinforced Concrete Buildings

et al. 2013

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Reinforced concrete buildings suffered significant damage in the region affected by the 29 May 2011 earthquake in Simav (Kutahya), Turkey. Typical building damage is classified and potential causes of damage are investigated. Reinforced concrete moment resisting frames with hollow brick infill walls are the most common structural system in and around the Simav city center while masonry construction is common in rural areas. Although the Simav earthquake, with a magnitude of 5.7 to 5.9, can be classified as a moderate earthquake, many buildings experienced damage varying from frequent diagonal cracking and brittle failure of infill walls to collapse or severe damage to frames due to short columns, soft stories or other reasons including insufficient or poor detailing of reinforcement. This study investigates and presents the seismicity of the region, characteristics of the measured ground motions, seismic load demands including response spectra, and damage mechanisms, potential causes and classification of observed damage in reinforced concrete buildings

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Section: Inadequate Transverse Reinforcementmentioning

confidence: 99%

The 2011 Earthquake in Simav, Turkey and Seismic Damage to Reinforced Concrete Buildings

et al. 2013

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“…Recent earthquakes have shown that failure of beam-column joints often leads to partial or total collapse of buildings (Sezen et al 2003, Dogangun 2004, Engindeniz et al 2005, and Alemdar and Sezen 2010. Use of FRP composites as a lightweight material is one of the easiest and most economical strengthening methods.…”

Section: Retrofit Of Beam-column Jointsmentioning

confidence: 99%

Effectiveness of Repair and Strengthening Methods for Reinforced Concrete Columns and Beam-Column Joints

Sezen

2012

Structures Congress 2012

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Currently, there are only a few common methods that can be used to strengthen reinforced concrete columns. These methods, including steel jacketing, section enlargement by concrete jacketing, and fiber reinforced polymer (FRP) composite wraps, were are used to strengthen 15 column specimens. The ease of application, economy and efficiency of each method are discussed and compared. In this study, three exterior reinforced concrete beam-column joint specimens were tested under reverse cyclic loading. The damaged specimens were repaired by replacing the damaged concrete and then strengthened using FRP strips. The strength was restored and deformation capacities of the strengthened specimens were much larger than those of the original specimens.

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“…The design of the buildings and structures was not for lateral loads, and so several of them fell down without any prior signs. Earthquakes across the globe in the previous few decades have shown that the reinforced concrete beam column joints are vulnerable to seismic loading ((Sezen et al (2003), Dogangun (2004), Zhao et al (2009), Alemdar and Sezen (2010)). The fragile detailed joints, particularly the external ones, have been recognized as crucial structural elements, and it seems that these collapse very soon.…”

Section: Introductionmentioning

confidence: 99%

Seismic Behavior of Exterior RC Beam-Column Joints Retrofitted using CFRP Sheets

Laseima

Mutalib

Osman

et al. 2020

Lat. Am. j. solids struct.

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The seismic behavior of full-scale exterior reinforced concrete (RC) beam-column joints retrofitted with externally bonded Carbon Fiber Polymers (CFRP) is examined in this paper. Casting and testing of two similar reinforced concrete beam column connections in the absence of transverse reinforcement at the joints took place under opposing cyclic loading with regulated displacement so as to examine their fundamental seismic performance. The first joint was examined as the control specimen and the other specimen was then retrofitted with CFRP sheets, with rounded border of the column and beam at and close to the joint region to change them from square to squircle segments. It is demonstrated in the experimental findings that the retrofitted beam column joint shows significantly greater strength, energy dissipation and ductility in comparison to the control specimen. There was a shift in the failure from the joint region to the beam ends in the retrofitted specimens, which would help in preventing the structure from disintegrating progressively. Because of the change in the beam and column from square to squircle segments, the debonding potential of the CFRP decreased and the restrictive impact of the CFRP increased. As a result, the experimental findings were verified using a 3D nonlinear finite element (FE) model. When the finite element and experimental findings are compared, it is determined that the suggested model is quite accurate.

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Shear behavior of exterior reinforced concrete beam-column joints

Cited by 15 publications

References 2 publications

The 2011 Earthquake in Simav, Turkey and Seismic Damage to Reinforced Concrete Buildings

The 2011 Earthquake in Simav, Turkey and Seismic Damage to Reinforced Concrete Buildings

Effectiveness of Repair and Strengthening Methods for Reinforced Concrete Columns and Beam-Column Joints

Seismic Behavior of Exterior RC Beam-Column Joints Retrofitted using CFRP Sheets

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