A new model to simulate joint shear behavior of poorly detailed beam–column connections in RC structures under seismic loads, Part I: Exterior joints

Effects of joint flexibility on lateral response of reinforced concrete frames

“…In RC moment-resisting frames, the overall earthquake resistance is significantly affected by the behaviour of beam-column joints. According to previous experimental [8][9][10][11][12] and analytical [13][14][15][16][17][18][19][20][21][22] research studies, the nonlinear behaviour of RC beam-column joints is significantly affected by bond-slip of the beam longitudinal reinforcements and diagonal shear cracking in the joint region that cause to degradation of strength, unloading/ reloading stiffness, and energy dissipation of beam-column joint sub-assemblages, which should be addressed in the nonlinear analysis of RC structures. Thus, it is necessary that inelastic behaviour of the joint panel is explicitly simulated in predicting the response of RC structures when subjected to earthquake loading [7].…”

Finite Element Analysis of Reinforced Concrete Beam-Column Connections with Governing Joint Shear Failure Mode

“…In a state of the art article, Lima et al (2012) reviewed some of the analytical and empirical models introduced in the last two decades for predicting shear strength of RC beam-column joints. Some simplified models are also developed for simulation of the joint shear behavior in nonlinear static and dynamic analysis of RC frames (Sharma et al (2011), Favvata et al (2008 and Shayanfar et al (2016)). For instance, model developed by Shayanfar et al (2016) is one of the recent models for this purpose.…”

Influence of Joint Response in the Assessment of Seismic Performance of Existing Reinforced Concrete Frames

“…It can be pointed out that finite element models are too demanding in terms of computational efforts for a great number of analyses, while models with multiple nodes and multiple springs (e.g. [17]- [19]) require more limited computational efforts allowing to capture realistically the joint panel kinematic behavior and simulate the horizontal translation that can occur between the centerlines of the columns above and below the joint. Vice-versa, the scissors model by Alath and Kunnath [16] does not capture this possible kinematic response, but it is the simplest and computationally less demanding joint model and it seems to be sufficiently accurate in predicting the experimental beam-column joint panel response for simulating the seismic response of non-conforming RC frames for purposes of fragility assessment and performance-based earthquake engineering [9].…”