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IBRACON Structures and Materials Journal • 2012 • vol. 5 • nº 4
Parametric study on the behaviour of bolted composite connections
to analyze the behaviour. The analyses were carried out based
on the connection stiffness. The results of characterization tests
were used to describe the properties of the elements in numerical
model. At this paper, the connection tested is called Model 1 or
Reference Model, therefore its behaviour was used as a base for
numerical model calibration and parametric analysis.
Three hydraulic jacks were used for efforts application, each one
with capacity of 500 kN. Two hydraulic jacks were located close to
the end of the beams, distant from the connection 1580 mm, and
the third one was used to apply a constant force on the top of the
column in an attempt to cause the same effect of the efforts coming
from the upper floors in a multistory building (Figure 6). This force
was applied with a steel shape under the hydraulic jack that distrib-
uted the efforts by the column cross section top, with an intensity
of 150 kN. The measurements of displacements and deformation
were carried out with transducers which were positioned below the
beams (Figure 7) and strain gauges glued in the steel bars and in
the steel profiles, in order to identify when these elements reached
the yielding stress.
Figure 4 – Details of slab reinforcement
Slab reinforcement
A
Continuity bars linked to the column by gloves
B
Figure 5 – Scheme of cyclic loading application
Figure 6 – Scheme of the test