Abstract

This paper presents experimental results for a lightly reinforced concrete (LRC) shear wall retrofitted with discrete fiber-reinforced polymer (FRP) strips at the boundary zones. The performance of this wall was evaluated through cyclic lateral load testing and compared with a wall retrofitted with continuous FRP at the boundary zones (Duong et al., 2024). Test results showed that the wall retrofitted with discrete strips exhibited a flexural tensile failure characterized by wide flexural cracks confined between FRP strips and rebar fracture at high drifts, while maintaining displacement compatibility and axial load capacity beyond strength degradation. Compared to the continuous FRP retrofit, the retrofit with discrete strips demonstrated a more ductile hysteretic response and improved drift capacity due to better distribution of flexural cracking. Overall, the experiment showed that discrete FRP retrofits can effectively enhance ductility and maintain structural integrity of LRC shear walls under lateral loading.

Disciplines

Architectural Engineering

Number of Pages

16

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URL: https://digitalcommons.calpoly.edu/aen_fac/174