Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Slip effects in reinforced concrete beams with mechanically fastened FRP strip
AbstractThis investigation concerns the flexural behavior of reinforced concrete (RC) beams strengthened with a mechanically fastened pultruded FRP strip (MF-FRP beams). Twelve small size MF-FRP beams and two control RC beams were tested under flexural loading. The main failure mode observed in this experimental program was nail rotation and bearing damage under increasing flexural load, which resulted in FRP slip with respect to the soffit of the RC-beam and loss of stress transfer. Strain gage data and visual observations obtained during the experiments provided useful insight for developing a new procedure for estimating the nominal moment capacity of the MF-FRP beams. The proposed method is guided by experimental evidence pointing to the significance of nail rotation associated with flexural cracking in RC beams. The developed procedure, based on a “strain reduction factor” of 24%, is able to estimate the nominal moment capacity of the MF-FRP beams with good accuracy.
Slip effects in reinforced concrete beams with mechanically fastened FRP strip
AbstractThis investigation concerns the flexural behavior of reinforced concrete (RC) beams strengthened with a mechanically fastened pultruded FRP strip (MF-FRP beams). Twelve small size MF-FRP beams and two control RC beams were tested under flexural loading. The main failure mode observed in this experimental program was nail rotation and bearing damage under increasing flexural load, which resulted in FRP slip with respect to the soffit of the RC-beam and loss of stress transfer. Strain gage data and visual observations obtained during the experiments provided useful insight for developing a new procedure for estimating the nominal moment capacity of the MF-FRP beams. The proposed method is guided by experimental evidence pointing to the significance of nail rotation associated with flexural cracking in RC beams. The developed procedure, based on a “strain reduction factor” of 24%, is able to estimate the nominal moment capacity of the MF-FRP beams with good accuracy.
Slip effects in reinforced concrete beams with mechanically fastened FRP strip
Lee, Jae Ha (Autor:in) / Lopez, Maria M. (Autor:in) / Bakis, Charles E. (Autor:in)
Cement and Concrete Composites ; 31 ; 496-504
14.04.2009
9 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Slip effects in reinforced concrete beams with mechanically fastened FRP strip
| Online Contents | 2009
Slip effects in reinforced concrete beams with mechanically fastened FRP strip
| Online Contents | 2009
Flexural behaviour of reinforced concrete beams strengthened with mechanically fastened FRP strip
| British Library Conference Proceedings | 2007