الفهرس 
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Abstract
Selender and thin walled forms of construction are a natural choice for any large scale structure employing reinforced concrete. Reinforced concrete flanged deep beams provide structural strngth and stability whose applications range from buildings, offshore structures, floatation units for housing in marshy land to floating hotels.
The ultimate behaviour of deep beams is usually governed by shear. The current methods for the analysis of the beam strngth in shear are indequate. The methods are based either on some forms of splitting action or on truss analogy.
Based on the modified compression field theory, a method for the shear analysis of rc flanged deep beams is put forward. The analysis involves the methods of shear failure, the load-carrying capacity in shear and the strains in concrete and steel. The proposed method accepts giagonal tension, shear compression and flexural shear as possible methods of shear failure in deep beams. By consideration of the strain condition in the web, a simple prodcedure is introduced to predict the beam deformations due to shear and vertical strains.
Tests were carried out on a total of 13 reinforced concrete flanged beams with stiffeners with overall depth/web thickness ratio between 40 and 80. The test speciments were simply supported with span/depth ratio of 0.5,1.0 or 2.0 and subjected to indirect, uniform-like or patch loads. Details of beams, method of test and observations and results of beam tests are reported.
Adiscussion and prediction on the structural behaviour of test beams including the modes of failure, the cracking and ultimate strengths, the concrete and steel strains, the midspan deflection and the emphasis of concrete compressive are presented.
An investigation of the infuence of shear panel ratio and web reinforcement on the shear strength of flanged deep beams is also introduced.