Allowable Span/Depth Ratio of SFRSCC Beams using SVM

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M. Vijayanand, Amrutha Varshini

Abstract

Many codes of practices specify basic span to effective depth ratio to control the deflections in case of traditionally vibrated concrete (TVC) beams. These values are modified for tensile steel ratio, compression steel ratio, steel grade and breadth of web of the flange. A similar specification has not been come across for fibre reinforced TVC/SCC beams.A method is proposed in this work for steel fibre reinforced SCC beams using SVM (Support Vector Machine) Technique. The proposed formula includes modular ratio, aspect ratio, tensile steel ratio and volume fraction. The computed deflections were compared with test data. A satisfactory agreement was noted. Further, a simplified effective moment of inertia function is suggested using SVM technique. Design charts were developed for easy application. A comparison has been done between the effective depths obtained from SVM, rupture limit state and serviceability limit state

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