Performance of Code Equations Compared to Experimental Data for Shear Capacity of FRP-RC Beams

Authors

Aly M. Said, Woodbridge CenterFollow
H. El Chabib, Bradley UniversityFollow

Document Type

Conference Proceeding

Publication Date

12-9-2009

Publication Title

Proceedings of the 2nd Asia-Pacific Conference on FRP in Structures (APFIS2)

Publisher

APFIS

First page number:

369

Last page number:

374

Abstract

Current approaches for estimation of shear capacity of concrete beams reinforced with fiber-reinforced polymer (FRP) are generally based on existing semi-empirical shear design equations for steel-reinforced concrete (S-RC). These equations were primarily evaluated based on experimental data generated on concrete beams with steel reinforcement. However, FRP materials have different mechanical properties and accordingly exhibit different modes of failure than steel, making the extension of existing shear design equations for S-RC beams to cover concrete beams reinforced with FRP somehow inaccurate. Currently available methods include ACI 440-06, JSCE-97, CSA S806-02, and ISIS Canada-01. Availability of FRP reinforcement products varies in terms of capacity and modulus of elasticity, which can result in a significant change in behavior. An experimental database of 150 FRP-reinforced concrete (FRP-RC) beams was developed from published literature. Subsequently, this database was used to assess the validity of these four main existing shear design methods for FRP-RC beams. This research investigates the performance of the abovementioned design methods to estimate the nominal shear capacity, V_n of steel-free concrete beams reinforced with FRP bars. Results show that current design guidelines provide a shear strength underestimation in the case of beams without shear reinforcement and a shear strength overestimation for beams with shear reinforcement.

Keywords

Beams; Carbon fiber-reinforced plastics; Concrete; Concrete beams; Code; Fiber reinforced polymers; FRP-reinforced; Reinforced concrete; Rigidity; Shear (Mechanics); Shear strength; Steel

Disciplines

Civil and Environmental Engineering | Construction Engineering and Management | Structural Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Said, A. M., El Chabib, H. (2009). Performance of Code Equations Compared to Experimental Data for Shear Capacity of FRP-RC Beams. Proceedings of the 2nd Asia-Pacific Conference on FRP in Structures (APFIS2) 369-374. APFIS.