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Abstract
The great demand to deep beams are often appear in some special construction projects and applications such as diaphragms , bridges , water tanks, precast constructions , foundations , silos , bunkers, tall buildings and offshore structures . Investigation carried out in this study deal with studying and analyzing the behavior of deep beams. The study concentrate on some of the most important factors affecting the behavior of deep beams whether they are simply supported or continous. These factors are , type of concrete (Ordinary reinforced concrete or High strength concrete ) , reinforcement ratio , web reinforcement ratio , openings (Size and position of the openings ) , shear span ratio to the total span . A nonlinear computer program based on 3D finite element techniques was developed to study the behavior reinforced concrete deep beams. The nonlinearities taken into consideration included the stress-strain relationships for concrete and steel reinforcement, concrete cracking and tension stiffening effects, and the Poisson’s ratio variation. 3D isoparametric brick element was used. Each element consists of 20 nodes and each node has 3 degree of freedoms (displacement). The reinforcing steel bars in this model are represented by steel bars embedded in concrete. One of the most computer program advantages is the used mesh generation technique. The efficiency and accuracy of the computer program was tested by comparing its results with those obtained experimentally by other researchers. Parametric studies are performed on some deep beam models to investigate how much they affect their behavior. Recommendations for practical applications and suggestions for future research works in the field of fiber reinforced concrete analysis were introduced.