REINFORCED CONCRETE COLUMN AND STEEL BEAM STRUCTURAL SYSTEM

Abstract

In recent years there is advancement in the structural systems that are used in buildings. Among these structural systems RCS moment frames which consist of Reinforced Concrete Column and Steel Beam, is one of the popular systems. This system offers several advantages like increased damping properties and increased stiffness compared to steel structures, lesser construction time, and long span capability. The RCS framed system consists of three main components steel beam, reinforced column and composite joint. Design of the steel beam and reinforced concrete column is same as that of the design followed in structural steel buildings and reinforced concrete buildings. However, limited guidelines are available for the design and detailing of the RCS joints. So, in this study the focus is on analysis of RCS joints. Based on past studies design guidelines for RCS joints were reviewed. A detailed force transfer mechanism from beams to columns through joints had explained with the help of past studies. Calculation of joint shear capacity is crucial for seismic design. Many experiments have been conducted in the past on the joints with different detailing but there is less focus on joints with cover plate. This research investigates the behavior of the RCS joint with cover plate. To investigate the behavior of reinforced concrete and steel (RCS) joints, a systematic approach was employed to develop a numerical finite element model using ABAQUS software. An integrated numerical model was developed to simulate the complex behavior of RCS joints with cover plate. The developed model is validated with experimental results. To determine the effects of several parameters, such as the axial load ratio, height and thickness of the cover plate, and the transverse beam, on the column, parametric research was carried out with the developed numerical model. This study offers a helpful insight into determining the strength contributions and damage level of each component in the joint.