Analysis of Beam-Column Joints using FEM

Abstract

Abstract: Members of space frame structures are in general
subjected to axial force, biaxial shear, biaxial moments and
torque. The structural designing of frameworks are carried-out
so as to meet the critical stress levels of each individual
structural member. In this context even though the sectional
sizes of the individual members are adequate to withstand the
forces they carry, the junctions where many such members
meet, may not be adequate to withstand the combined effects.
This problem is common to all kinds of structural joints made
up of both steel and concrete.
In the present paper the beam-column junction portion
made in RCC is analyzed using the FEM package ANSYS. The
loads that act at the beam-column joint are obtained from the
output of structural analysis of framed structure. These loads
are used on the FEM model of beam-column joint. The aim of
the present study is to replace the beam-column joint in a
structural frame work with the equivalent strut-beam frame
work to carry out the structural analysis. By this approach it is
intended to use the same software package used for the analysis
of skeletal frame work to the one with the beam-column joints
also.

Index Terms: Beam-column joint, equivalent strut, axial
force, shear and torque