Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/27899
Title: Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons
Authors: Lou, Tiejiong 
Lopes, Sergio M. R. 
Lopes, Adelino V. 
Keywords: A. Carbon fiber; B. Strength; C. Finite element analysis (FEA); C. Numerical analysis
Issue Date: Nov-2014
Publisher: Elsevier
Citation: LOU, Tiejiong; LOPES, Sergio M. R.; LOPES, Adelino V. - Factors affecting moment redistribution at ultimate in continuous beams prestressed with external CFRP tendons. "Composites Part B: Engineering". ISSN 1359-8368. Vol. 66 (2014) p. 136–146
Serial title, monograph or event: Composites Part B: Engineering
Volume: 66
Abstract: A numerical investigation of redistribution of moments in continuous concrete beams prestressed with external carbon fiber reinforced polymer (CFRP) tendons at failure loads is described. A finite element analysis (FEA) model is introduced, and an extensive parametric study is carried out on two-span continuous beams. The factors examined in this study include the content of non-prestressed steel, tendon eccentricities, tendon area, effective prestress, span-to-height ratio, concrete strength, CFRP modulus of elasticity and load type. The results obtained from FEA are compared with those obtained from various codes. The study shows that the importance of some factors is not reflected in the codes. When used to calculate the degree of moment redistribution in these beams, the parameter εt (net strain in extreme tension steel) seems to be more reasonable than the parameter c/d (ratio of neutral axis depth to section effective depth). A simplified equation for calculating the degree of moment redistribution at ultimate is proposed.
URI: http://hdl.handle.net/10316/27899
ISSN: 1359-8368
DOI: 10.1016/j.compositesb.2014.05.007
Rights: openAccess
Appears in Collections:I&D CEMUC - Artigos em Revistas Internacionais
FCTUC Eng.Civil - Artigos em Revistas Internacionais

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