journal article·2011-02

Experimental study of moment redistribution in RC frames strengthened with CFRP sheets

Farhang Farahbod, Davood Mostofinejad

Composite Structures· Volume 93· Issue 3
Publisher page

Abstract

Abstract The present paper describes an experimental investigation of moment redistribution of continuous beams in 6 two-span RC frames strengthened with CFRP laminates. Design variables were the number of CFRP layers, and the configuration of the laminates. To prevent debonding of the CFRP laminates at the end region and at the beam-column connection, U-shaped CFRP anchorages were provided for all of the frame specimens. Furthermore, mechanical anchorages of steel plate strips and bolts were added to the laminates in one frame of these specimens. Test results showed that a maximum moment redistribution of 56% occurred in the strengthened frames. Furthermore, the load carrying capacities of the strengthened frames increased from 20% to 38%, while the flexural capacities had an increase of 9% to 20% and 35% to 55% at the negative and positive moment regions, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Structural Behavior of Reinforced Concrete · Structural Load-Bearing Analysis · Concrete Corrosion and Durability

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (13)

Show source-provided references
1. Sagging and hogging strengthening of continuous reinforced concrete beams using carbon fiber-reinforced polymer sheets
2. Strengthening of cantilever and continuous beams using new triaxially braided ductile fabric
3. Ibell T, Silva P. Design of continuous FRP-strengthened concrete structures allowing moment redistribution. In: International sampe technical conference, soc. For the advancement of material and process engineering; 2004. p. 2957–66.
4. Ghandour AA, Abdelrahman AA, Nasr EA, Aly HA. Moment redistribution in rc continuous beams strengthened in flexure by CFRP laminates. In: Proceedings of the 2nd international conference on FRP composites in civil engineering – CICE 2004. Adelaide (Australia CICE); December 2004. p. 227–35.10.1201/9780203970850.ch22 ↗
5. Moment redistribution in continuous plated rc flexural members. Part 1: neutaral axis depth approach and tests10.1016/j.engstruct.2004.08.003 ↗
6. Moment redistribution in continuous plated rc flexural members. Part 2: flexural rigidity approach10.1016/j.engstruct.2004.08.004 ↗
7. Moment redistribution parametric study of CFRP, GFRP and steel surface plated RC beams and slabs10.1016/j.conbuildmat.2005.06.038 ↗
8. Tests on the ductility of reinforced concrete beams retrofitted with FRP and steel near-surface mounted plates10.1061/(ASCE)1090-0268(2006)10:2(106) ↗
9. Bending and vibration characteristics of damaged RC slabs strengthened with externally bonded CFRP sheets10.1016/S0263-8223(03)00170-3 ↗
10. Failure diagrams of FRP strengthend RC beams10.1016/j.compstruct.2005.08.003 ↗
11. Analysis of RC beams strengthened with mechanically fastened FRP (MF-FRP) strips10.1016/j.compstruct.2005.12.001 ↗
12. An experimental study of the flexural behavior of GFRP RC beams and comparison with prediction models10.1016/j.compstruct.2009.05.005 ↗
13. ACI 318M-08. Building code requirements for structural concrete and commentary. Farmington Hills (MI): American Concrete Institute; 2008.