FINITE ELEMENT MODELS OF POST-TENSIONED MASONRY COLUMNS
Abstract: Applications of
finite element method in modelling dynamic problems can be used
to predict structural
dynamic behaviour. In
this paper the
post-tensioned masonry
column was modelled
in 2D and
3D using two
finite element analysis computer programs, LUSAS and ABAQUS.
The frequency analyses were carried out to determine natural frequencies and
the corresponding mode shapes of post-tensioned masonry columns.
The effects of
increasing post-tension force
on the natural frequencies of the columns were
determined A comparison was made between the 2D and 3D
models and also
between the two
programs used by
way of their
natural frequency results. It has
been shown that the natural frequencies of post-tensioned masonry column with zero
post-tension force comprise the natural frequencies of its individual
components (the masonry column
with the concrete
cap only and
the post-tensioning bar
only). With increasing post-tension force the natural frequency
increased. Natural frequencies obtained
using 2D models were in general higher than those of 3D models and ABAQUS
results were almost smaller than LUSAS results. Nevertheless, it is appropriate
to model dynamic behaviour of post-tensioned masonry in 2D and to use any of
the two programs.
Author: Ida Ayu Made Budiwati
Journal Code: jptsipilgg080001
