A Literature Review on Beam Column Joints with Different Loading Condition and Methods of Strengthening (original) (raw)
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Seismic Analysis of Beam Column Joints in Reinforced Concrete Moment Resisting Frames
The beam column joint is the crucial zone in a reinforced concrete moment resisting frame. It is subjected to large forces during severe ground shaking and its behavior has a significant influence on the response of the structure. During earthquake, the beam column joints may fail due to the bond and shear failure mechanisms which are brittle in nature. Therefore, a code should be developed to provide adequate anchorage to longitudinal bars and confinement of core concrete in resisting shear, so that the joint can bear the extensive inelastic deformations in a stable manner. In Indian practice the joints are generally assumed to be rigid which fails to consider the effect of high shear forces developed within the joint. Thus the behavior of the joints must be understood properly for safe design of the joints. Design and detailing of beam column joints in reinforced concrete structures are given in IS 13920. But, considering the earthquake effects followed after the release of the IS...
Study of Reinforced Concrete Beam-Column Joint
International journal of engineering research, 2015
The beam column joint is the crucial zone in a reinforced concrete moment resisting frame. It is subjected to large forces during severe ground shaking and its behaviour has a significant influence on the response of the structure. The assumption of rigid joint fails to consider the effects of high shear forces developed within the joint. The shear failure is always brittle in nature which is not an acceptable structural performance especially in seismic conditions. This paper presents a review of the postulated theories associated with the behaviour of joints. Understanding the joint behaviour is essential in exercising proper judgments in the design of joints. The paper discusses about the seismic actions on various types of joints and highlights the critical parameters that affect joint performance with special reference to bond and shear transfer.
Seismic Behavior of Beam Column Joints in Reinforced Concrete Moment Resisting Frames
The beam column joint is the crucial zone in a reinforced concrete moment resisting frame. It is subjected to large forces during severe ground shaking and its behaviour has a significant influence on the response of the structure. The assumption of joint being rigid fails to consider the effects of high shear forces developed within the joint.
The beam column joint is the most affected area in a reinforced concrete moment resisting frame. It is unprotected to large forces during severe ground shaking and its behavior has a significant influence on the retort of the structure. Joints are crucial part for the transfer of force reactions and moments effectively between the connecting elements like beams and columns. As a result, joints often become the weakest links in the structural system. The main objective of this paper is to analytically check different types of strengthened beam column (B-C) joint with different and compare the final results. A cyclic load is applied to beam column joint model to check the reactions, ultimate load, total deformation and ductility. The retrofitting techniques for strengthening a weak structure are researched in many ways during the past and contemporary. Here we use some costeffective techniques to strengthen, they are TRM, SRP layer coating, Kevlar-149 lamination over the structure based on the ultimate load and lateral deflection, a comparative study is done with different strengthened models. The project also explains about the shear stress, normal stress, deflection, reactions and moment acting on the model. Analysis of the structure is done with computational aided software "ANSYS Workbench 16.2".
A Review on Reinforced Concrete Beam Column Joint: Role, Modeling and Recent Details
The Journal of Engineering Research, 2020
Reinforced concrete RC frames are commonly used system in RC buildings. The philosophy behind the proper design for this type of frames is to provide them with sufficient ductility. The structural ductility of a frame is mainly determined by the ductility of its components, i.e. the beams, columns and joints forming this frame. Beam-column joint BCJ role in a building is to connect its components together and enable these component to reach their ultimate resistance. BCJ stiffness, strength and ductility are key characteristics needed to guarantee efficient building behaviour under the action of different loads. Previous research shows that building’s damage may be caused by inadequate reinforcement details of its BCJs. Deficiency in joints performance is related to inadequate codes guidelines or to bad construction practice. This paper reviewed the provisions of three different codes (ACI 318-08, Eurocode 8 and ECP-203) concerning the proper design and detailing of different BCJs. ...
Investigating the Performance of Reinforced Beam-Column Joint under Different Loads: A Review
In reinforced concrete framed structure the beam-column joint are critical regions and the joint take part in a very significant role both during the design and construction stages. There are practical difficulties involved in the construction of reinforced beam-column joints. In the design and detailing of beam-column joints, it is desired to prevent the brittle shear failure of the joint so that the integral capacity of the connecting beams and columns can be developed. Unsafe design and detailing within the joint region will results in damage the entire structure, even if other structural members conform to the design requirements. The focus of review is to determine the variation of stresses, torsional effects and eccentricity impact on performance of joint under severe earthquake loads.
A Review on Behavior of Reinforced Concrete Beam-Column Joint
In reinforced concrete framed structure the beam-column joint are critical regions and the joint take part in a very significant role both during the design and construction stages. There are practical difficulties involved in the construction of reinforced beam-column joints. In this review to focus on the general behaviour with specific structural properties of common types of joints in reinforced concrete moment resisting frames to be aware of the fundamental theory of the joint for better efficiency.
BEHAVIOR OF EXTERIOR R.C BEAM COLUMN JOINT WITH STRENGTHENED CONCRETE AND DIAGONAL CROSS BRACINGS
IAEME, 2019
Reinforced concrete moment resisting structures everywhere throughout the world is in necessity of quick actions for overhauling their execution level to survive the seismic loading impacts. Failure of beam column junctions are identified as the central cause of failure in moment resisting frames during seismic loads. Successful and economical techniques are required to improve joint structural properties and ductility of structures. In present work the seismic behavior of beam column joints with Diagonal cross bracings and strengthened concrete is contemplated. Performance of beam column joints with reinforcement specifications as per IS 13920:1993 and IS 456:2000 along with diagonal cross bracings, strengthening of concrete by using glass fibers and GGBS are studied in this exertion. The outcomes in this study illustrates that the provision of additional diagonal cross bracings and strengthening of concrete shows improvement in structural properties like load carrying, energy dissipation capacities and ductility which eventually improves the seismic behavior of beam column joints
Procedia Engineering, 2014
That the failure of large beam column specimens occurs in the joint rather than in the adjoining members or the beam proves that the joint shear strength of the current methods are inadequate. Moreover, the addition of transverse shear reinforcement in the joint up to a certain limit will increase the shear strength and otherwise it would result in a decrease, if this limit is exceeded. So to increase the shear strength to a greater value, other means are required. With the simplifying assembling and the ductile performance of steel, it is proposed that the use of King-cross steel profile implants at beam-column-joints as a shear reinforcement could be expected to replace the transversal reinforcement and enhance the joint shear strength, ductility and stiffness of the structure.
Deficient Reinforced Concrete Beam-Column Joint Strengthening
2018
Structural buildings in seismic prone area, the required energy dissipation of strong column-weak beam especially for reinforced concrete frame structures is achievably through adequate beam-column joint strengthening connection in order to have high seismic performance. Literature investigation shows several approaches and techniques for modelling the weak joint for a typical frame structure. This paper extensively reviews those techniques, methods, concepts and their performance in improving the shear capacity for a deficient reinforced concrete beam-column joints in withstanding seismic loads. The beam-column joints performance responses showed positive. However, the need for an improved connection that will offer high ductility capacity and energy dissipation ability for post-tensioned reinforced concrete beam-column joints with continuing bottom reinforcement is highly feasible with the use of the Direct Displacement Based design philosophy. This will be of great interest for t...