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Effect of Web Openings Size on Steel Fiber Reinforced Concrete Deep Beams

Author : Heba A. Mohamed

Pages : 1230-1237
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In this paper, an analytical study is conducted to investigate the effect of web opening size on the behavior of steel fiber deep beams. Large openings often interrupt the load transfer by concrete struts in these beams and cause a sharp decrease in strength and serviceability. The results obtained from the finite element analysis are verified against previous experimental results. The finite element results are compared in term of load deflection curve, showing a good agreement. sixteen reinforced concrete deep beams with or without openings are analyzed under two-point top loading. The main parameters were the width and depth of the opening, steel fiber volume fraction, and shear span to depth ratio. Materials nonlinearities due to cracking or crushing of concrete and yield conditions of the reinforcing steel are considered. Results and conclusions which are useful for structural engineering practice are drawn from the research.

Keywords: Nonlinear; finite element; Web openings; Steel fiber; Deep beam; Reinforced concrete.

Article published in International Journal of Current  Engineering  and Technology, Vol.3,No.4(Oct- 2013)




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