Strengthening of RC beam-column joints using steel plate with shear connectors: Experimental investigation

Ebanesar, Arunraj; Gladston, Hemalatha; Farsangi, Ehsan Noroozinejad; Sharma, S. Vivekananda

doi:10.1016/j.istruc.2021.08.042

Cited by 13 publications

(4 citation statements)

References 31 publications

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“…Furthermore, the ability of energy dissipation was increased by 7 times compared to the control specimen. Ebanesar et al, (2022) showed experimental studies of beam-column joints strengthened with steel plates and steel plates with shear connections under cycle load. Six external beam-column joints made to a smaller size were cast for the study.…”

Section: Strengthening Methods For Reinforced Concrete Jointsmentioning

confidence: 99%

Revisiting the Versatility of Seismic Load-enabled Reinforced Concrete Beam Column Linkage

Aljabbri,

Karim,

Majeed

2024

IAJSE

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In the seismic load-facilitated (vertical and lateral) reinforced concrete beam-column (RCBC), strong linkages are vital to protect the integrity of any civil structure foundation. Compared to other structural components, these joints often collapse during an earthquake in the seismic locations due to plastic-hinge zone mechanism. Most of the earlier reports on these issues mainly focused on two-dimensional RCBC joints and seldom emphasized on the need of three-dimensional RCBC linkages. Based on this fact, we critically overviewed several recent-state-of-the-art studies carried out on the improvement of RCBC linkages subjected to seismic loading. A careful evaluation of these articles revealed that the factors like shear strength (SS), failure, processing and selection of materials, as well as methods of strengthening (MS) of these RCBC joints are responsible for the collapse. It is established that for low axial load the ductility and bending resistance of the column must be enhanced to strengthen the RCBC links, enabling the diagonal strips or bars more robust than vertical ones and vice versa. Briefly, this article may provide the taxonomy for navigating the researchers into this field, leading to future sustainable development in the civil engineering construction sectors.

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Section: Strengthening Methods For Reinforced Concrete Jointsmentioning

confidence: 99%

Revisiting the Versatility of Seismic Load-enabled Reinforced Concrete Beam Column Linkage

Aljabbri,

Karim,

Majeed

2024

IAJSE

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“…The displacement was steadily increased during this study to obtain realistic inter-story drift-ratio of 0.5 percent, 0.7 percent, 1.0 percent, 1.5 percent, 2.0 percent, 3 percent, 4 percent, 5 percent, 6 percent, and 7 percent. Figure 10 shows the displacement histories that were applied to all of the specimens similar to the loading pattern of Ebanesar et.al [38]. The wall uplift can be seen in Figure 11, which was created because no grouting or connectors were used.…”

Section: Setup For the Experimental Investigationmentioning

confidence: 99%

Precast concrete wall-raft connectors for increasing the lateral load capacity: An experimental and analytical approach

SenthilKumar,

Tensing,

Hemalatha

et al. 2023

Res. Eng. Struct. Mat.

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Precast structural walls and rafts commonly resist lateral load in structures owing to improved traits and faster construction. The behavior of five different types of precast reinforced concrete structural wall and raft connection systems is evaluated in this study. In all five configurations, the cyclic load is applied in the wall systems to observe the lateral load-carrying capacity and hysteretic characteristics. The damage and failure patterns were assessed. To confirm and contrast the behavior of the proposed precast structural wall and raft connection systems with the experimental findings, FEM analysis was used. Only shear and flexural cracks were observed. The specimen with 12 mm dia rods has the maximum load carrying capacity of 10.23 kN in the negative cycle, which is 57% more than the specimen without grouting and connector. The suggested connection can improve the resistance behavior in all key directions by absorbing more energy than precast walls under dynamic load.

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“…Dalfre and Barros [ 15 ] reported successful NSM techniques for the strengthening of slabs, too. Other forms of materials and techniques, like fully-fastened-haunches [ 16 ], steel meshes [ 17 ], external bars [ 18 ], and steel plates with shear connectors [ 19 ], have also been experimentally investigated for the upgrading of RC elements and BCJs. Analytical efforts have also been reported, as well [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Efficacy and Damage Diagnosis of Reinforced Concrete Columns and Joints Strengthened with FRP Ropes Using Piezoelectric Transducers

Karayannis

Golias

Naoum

et al. 2022

Sensors

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Recent research has indicated that the implantation of a network of piezoelectric transducer patches in element regions of potential damage development, such as the beam–column joint (BCJ) area, substantially increases the efficacy and accuracy of the structural health monitoring (SHM) methods to identify damage level, providing a reliable diagnosis. The use of piezoelectric lead zirconate titanate (PZT) transducers for the examination of the efficiency of an innovative strengthening technique of reinforced concrete (RC) columns and BCJs is presented and commented on. Two real-scale RC BCJ subassemblages were constructed for this investigation. The columns and the joint panel of the second subassemblage were externally strengthened with carbon fiber-reinforced polymer (C-FRP) ropes. To examine the efficiency of this strengthening technique we used the following transducers: (a) PZT sensors on the ropes and the concrete; (b) tSring linear variable displacement transducers (SLVDTs), diagonally installed on the BCJ, to measure the shear deformations of the BCJ panel; (c) Strain gauges on the internal steel bars. From the experimental results, it became apparent that the PZT transducers successfully diagnosed the loading step at which the primary damage occurred in the first BCJ subassemblage and the damage state of the strengthened BCJ during the loading procedure. Further, data acquired from the diagonal SLVDTs and the strain gauges provided insight into the damage state of the two tested specimens at each step of the loading procedure and confirmed the diagnosis provided by the PZT transducers. Furthermore, data acquired by the PZT transducers, SLVDTs and strain gauges proved the effectiveness of the applied strengthening technique with C-FRP ropes externally mounted on the column and the conjunction area of the examined BCJ subassemblages.

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Strengthening of RC beam-column joints using steel plate with shear connectors: Experimental investigation

Cited by 13 publications

References 31 publications

Revisiting the Versatility of Seismic Load-enabled Reinforced Concrete Beam Column Linkage

Revisiting the Versatility of Seismic Load-enabled Reinforced Concrete Beam Column Linkage

Precast concrete wall-raft connectors for increasing the lateral load capacity: An experimental and analytical approach

Efficacy and Damage Diagnosis of Reinforced Concrete Columns and Joints Strengthened with FRP Ropes Using Piezoelectric Transducers

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