Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Behavior of reinforced concrete beams strengthened using CFRP sheets with innovative anchorage devices
Highlights New GFRP sidebars to anchor CFRP flexural sheets in reinforced concrete beams. New GFRP side patches to anchor CFRP flexural sheets in reinforced concrete beams. Experimental testing shows superior anchorage response for both. Numerical analysis program to compare analysis to experimental results. Results are compared with standard U-wrap anchorage.
Abstract The objective of this experimental study is to assess the effect of new flexural anchorage devices on improving the performance of strengthened reinforced concrete beams in flexure. Six reinforced concrete (RC) beams were prepared and tested, three of which having identical T cross-section and the other three with identical rectangular section. The first specimen in each series was tested as a control beam. The second specimen in each series was strengthened using four layers of flexural CFRP in addition to side GFRP bars. The sidebars were inserted longitudinally into side grooves at the level of primary steel reinforcement to prevent peeling off from the sides. The last specimen in each series was strengthened in flexure using identical four layers of CFRP plus GFRP patches installed longitudinally along both sides of the beam. The beams were tested under four-point bending until failure and the results for each series are evaluated. In addition, the outcome is compared with U-wrap anchorage technique that has been examined by others. It was concluded that using CFRP sheets with both anchorage devices significantly increased the flexural capacity beyond that of unanchored and U-wrap anchored specimens. Quantitatively speaking, T beams anchored with GFRP sidebars and GFRP side patches showed 74% and 58% increase in strength over unanchored strengthened specimens respectively.
Behavior of reinforced concrete beams strengthened using CFRP sheets with innovative anchorage devices
Highlights New GFRP sidebars to anchor CFRP flexural sheets in reinforced concrete beams. New GFRP side patches to anchor CFRP flexural sheets in reinforced concrete beams. Experimental testing shows superior anchorage response for both. Numerical analysis program to compare analysis to experimental results. Results are compared with standard U-wrap anchorage.
Abstract The objective of this experimental study is to assess the effect of new flexural anchorage devices on improving the performance of strengthened reinforced concrete beams in flexure. Six reinforced concrete (RC) beams were prepared and tested, three of which having identical T cross-section and the other three with identical rectangular section. The first specimen in each series was tested as a control beam. The second specimen in each series was strengthened using four layers of flexural CFRP in addition to side GFRP bars. The sidebars were inserted longitudinally into side grooves at the level of primary steel reinforcement to prevent peeling off from the sides. The last specimen in each series was strengthened in flexure using identical four layers of CFRP plus GFRP patches installed longitudinally along both sides of the beam. The beams were tested under four-point bending until failure and the results for each series are evaluated. In addition, the outcome is compared with U-wrap anchorage technique that has been examined by others. It was concluded that using CFRP sheets with both anchorage devices significantly increased the flexural capacity beyond that of unanchored and U-wrap anchored specimens. Quantitatively speaking, T beams anchored with GFRP sidebars and GFRP side patches showed 74% and 58% increase in strength over unanchored strengthened specimens respectively.
Behavior of reinforced concrete beams strengthened using CFRP sheets with innovative anchorage devices
Zaki, Mohammed A. (Autor:in) / Rasheed, Hayder A. (Autor:in)
Engineering Structures ; 215
20.04.2020
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Fatigue performance of reinforced concrete beams strengthened with CFRP sheets
| Online Contents | 2011
Fatigue performance of reinforced concrete beams strengthened with CFRP sheets
| British Library Online Contents | 2011
Reliability Analysis of Reinforced Concrete Beams Strengthened with CFRP Sheets
| British Library Online Contents | 2011
| British Library Online Contents | 2018