MODELING THE BEHAVIOR OF REINFORCED CONCRETE BEAM-COLUMN EXTERIOR JOINT USING ANSYS WITH THE COMPARISON OF RESULTS OF ANALYTICALLY AND EXPERIMENTALLY

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 a crucial part of the transfer of force reactions and moments effectively between the connecting elements like beams and columns. In this paper, the main aim of the study is modeling the behavior of reinforced concrete beam-column exterior joint using ANSYS with the comparison of results of analytically and experimentally. El-Amoury and Ghobarah performed cyclic tests on exterior beam-column joints that represented the joints builtfollowing pre-1970's codes. Sharma model that simulated the shear behavior of reinforced concrete connections in structures subjected to seismic loads was proposed. The model used limiting principal tensile stress in the joint as the failure criteria so that due consideration was given to the axial load on the column. The spring characteristics were based on the actual deformations taking place in the sub-assemblage due to joint shear distortion. In this paper, a finite element model of the beam-column joint is done in ANSYS. Modeling is an important feature in Finite Element Analysis. Improper modeling of the structures leads to unexpected errors in the solution. Hence, proper care should be taken to modeling the structures. Finite Element modeling of beam-column joints in ANSYS consists of three stages, which are listed below. I) Selection of element type, II) Assigning material properties, III) Modeling and meshing the geometry.

کلیدواژه ها:

Beam-column connection ، Ansys ، Nonlinear analysis ، Finite element analysis