STUDY ON ROLE OF JOINT HOOPS ON PUSHOVER ANALYSIS OF RC BEAM-COLUMN JOINT USING FINITE ELEMENT MODELING

• Main Author: Hardi, Steven
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/47983
• Institution: Institut Teknologi Bandung

Beam-column joints are one of the most protected structural elements that transfers axial, shear, and moment from beams to columns. To ensure that the transfer happens, the strength of beam-column joints should not be less than the demand from corresponding members. In order to keep the joints from failure before the adjacent column and beam does, SNI 2847:2019 recommends the use of capacity design principles to design beam-column joints thus using confinement requirement of column plastic region. This often leads to congested joints which are difficult to construct, especially in regions with high axial load. The aim of this study is to investigate the role of joint hoops through pushover analysus if two-dimensional finite element modelling. Uniaxial concrete material behavior is modelled by using concrete damaged plasticity in ABAQUS Standard/CAE with damage parameter input. Plane stress element with reduced integration (CPS4R) is used as the element type of the model. Steel reinforcement behavior is assumed to be elastoplastic and perfectly bonded to the concrete. Enhanced hourglass control is used to counter hourglassing problems of reduced integration element. Three joint speciments with joint hoops variation is studied and modelled using finite element. The result of finite element analysis is then verified to backbone curve of previous researchers‘ experimental results. Pushover analysis results shows that the joint sample without any joint hoops has less ductility than joints with joint hoops but with similar ultimate strength. Furthermore, the joint with less transversal joint reinforcement could be used without significantly affecting the performance of the joint.