Abstract:
Now a day, numerical models for the assessment of behavior of structures become more
accurate and reliable. A finite element modeling approach which is used to predict the
behavior of structures is becoming more popular instead of conducting the full
experimental tests, since the efficiency of the model can be evaluated by the experimental
results, the numerical models shows a good agreement with the experimental program.
In this study a finite element approach was taken for assessing the response of reinforced
concrete continuous deep beams with openings subjected to two point loads. The
responses such as failure mode, ultimate load and deflection from the load-mid span
displacement graph were verified with the experimental result.
Parametric study was carried out using the developed finite element model. In the
parametric study the effects of opening size, shape and location on the load deflection
behavior of deep beam was investigated.
From the study it can be conclude that the load carrying capacity of deep beams is
greatly affected by the occurrence of openings or discontinuities. The inclusion of 9%
rectangular opening at the exterior and interior shear span between the support and
loading point on the deep beam causes a 21.08% and 52.33% reduction in the load
carrying capacity respectively. In addition this study has compared different types of
opening size, shapes and locations and from those shapes the circular one was with
better load carrying capacity and regarding the location of openings placing openings at
the center of the exterior shear span near to the exterior support was more advantageous
in this study.
