| Summary: | Various kinds of castellated beams (with circular, hexagonal, and rectangular
openings) have been developed in order to optimize the use of structural steel profiles. In
view of the limitations in the current production of high-effectivity castellated beams,
their capacity has for a while undergone a stagnation as to the increase thereof. This
thesis develops a type of modified castellated beam, formed from a straight-profile cut in
the mid-section whereby the two resulting half-parts are connected by an angle shape
steel member inclined at 45�, in such a way that the effective height of the beam can be
readily increased. The structural behavior of the beam construct including displacement,
stress, and strain responses along with the associated failure mechanism, is
experimentally studied in the present thesis.
modified castellated beam is composed of IWF structural steel with
dimensions
The
150x75x7x5 mm
3
horizontally divided into two parts, which, in turn, are
connected by an angle shape steel member with dimensions 30x30x3 mm
2
, in such a way
that the beam�s overall height is 275 mm with a span of 920 mm, referring to the beam
dimensions found in previous. The set-up behind our experimentation utilizes two-point
loading. The experiment ceases when the load has suffered 30% decrease with respect to
Pmax.
Based on this experiment and analysis, we conclude the followings: The
shear behavior of the modified castellated beam is determined by the mechanism
of compression of the angle shape connecting member
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