Effective reinforcement ratio of RC beams: Validation of modelling assumptions with high‐resolution strain data

• Published in: Structural concrete : journal of the FIB Vol. 23; no. 3; pp. 1353 - 1369
• Main Authors: Galkovski, Tena, Mata‐Falcón, Jaime, Kaufmann, Walter
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY‐VCH Verlag GmbH & Co. KGaA 01.06.2022; Wiley Subscription Services, Inc
• Subjects: compatible stress field method; Compression zone; Concrete; Cross-sectional studies; cross‐sectional analysis; digital image correlation; Digital imaging; distributed fibre optical sensors; effective area of concrete in tension; Euler‐Bernoulli beam theory; Image compression; Mathematical models; Parameters; plane strain assumption; pure bending; Reinforced concrete; Reinforcement; Reinforcing steels; Residual stress; Stiffening; Stiffness; Tensile strength; Tension stiffening

Concrete tensile stresses influence the cracking behaviour and the stiffness of reinforced concrete (RC) members. Most design codes account for this tension stiffening effect using an effective reinforcement ratio. Although this ratio has a significant influence on the design of RC structures, its q...