Inproceedings,

Experimental Study on the Strengthening and Repair of R/C Wall-Frame Structures with an Opening by CF-Sheets or CF-Grids

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Proceedings of the Second International Conference on FRP Composites in Civil Engineering - CICE 2004, page 631--640. Adelaide, Australia, A.A. Balkema Publishers, ISBN~90~5809~638~6, (December 2004)

Abstract

ABSTRACT: In this study, the first story in a multi-storied reinforced concrete structural wall with openingswas strengthened using carbon fiber sheets (CF sheets) and carbon fiber grids (CF grids). The effect of shear reinforcement and repair on earthquake resisting behavior were examined with a horizontal forcing experiment for several specimens having different opening positions and opening shapes. The maximum strength and deformability were improved by the CF grid reinforcement of the wall irrespective of opening positions, etc. The deformability was greatly improved by establishing vertical slits in the wall at the four corners of the opening, and reinforcing the columns and sleeve walls using CF sheets. It was possible to evaluate approximately the ultimate flexural and shear capacities of the test specimens in which the reinforcement method differs, by correlating with the fracture modes.

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