Assessing Code Based Shear Prediction Values Of Reinforced Concrete Beams Using Modified Compression Field Theory

Though different researches have been conducted so far on shear strength of reinforced concrete beam, it is yet not definite to predict it in accurate manner. As a result, different design codes use different empirical formulae based on truss analogy.rnThe truss analogy which was developed independently in 1899 and 1902 by Swiss engineer Ritter and by a German engineer Mӧrsch respectively. This theory is still deficient in representing the actual response of reinforced concrete element that is subjected to shear.rnIn recent years researchers at the University of Toronto came up with a more rational theory called “The Modified Compression Field Theory (MCFT)”; that can explain the response of a reinforced concrete elements subjected to shear. However, the complexity of this theory necessitate to convert it is procedure in to a computer program.rnTherefore this research transact code algorithm of MCFT and evaluated both American Concrete Institute (ACI) 318-11 (2011) and EuroCode 2 (2004) design codes procedures.rnAnalysis and design of three different beams that are exposed to different types of loading is conducted using the above two codes. Results have been compared with those obtained from MCFT and have shown a safe results. Also a comparison between this two codes shows, EuroCode 2 gives more economical shear reinforcement spacing than ACI, for beams that require minimum shear reinforcement.rnKey words: shear; strength; reinforced concrete; computer program; design code.

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