Seismic performance of RC beam–column joints retrofitted with steel dissipation jackets

FE Modelling of the Seismic Behavior of Wide Beam-Column Joints Strengthened with CFRP Systems

“…Indeed, the seismic retrofit or upgrading of a building is rarely made by using only one strengthening technique, as underlined in [9]. Some researchers highlighted the use of simple steel elements to get an increase of strength and energy absorption taking also the advantage of tuning the global failure mechanism to weak beam-strong column [10].…”

Finite Element Analysis of External Rc Wide Beam-Column Joints Provided With Different Detailing Solutions

“…Beam-column joints equipped with deep beams were part of the same research program [5,6,7]. Based on the results of the experimental tests on wide beam-column joints, the authors calibrated a detailed finite element model in order to perform a parametric analysis to evaluate the influence of some detailing solutions on the seismic behavior of joints.…”

Seismic Retrofit of Defective RC Beam-Column Joints

“…By pre-stressing the side bolts, the concrete covering acts as a support and at the moment the load is applied, it causes the plate between the side bolt and the medial bolt to separate from the concrete. G. Santarsiero et al [41] have also used tensile straps to connect steel plates to beams and columns. The strength of the connection was increased by relatively 95 percent but the initial stiffness did not change at all which probably is due to the use of tensile straps whose presence has caused the support-like role of the concrete covering and also has caused the mid-section steel plate to separate from the concrete (Fig.…”

“…The load-displacement diagram was first bilinearized and then the ratio of the final displacement over the final displacement of the linear phase was used as the quasi-ductility of the connection. [41], reached 140 percent of relative strength increase in his best retrofitting model (C2RR). But his model was not initially imperfect.…”