Retrofit of RC hollow piers with CFRP sheets

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Pedro Delgado (Author) Other; António Arêde (Author) FEUP; Nelson Vila Pouca (Author) FEUP; Patrício Rocha (Author) Other; Aníbal Costa (Author) FEUP; Raimundo Delgado (Author) FEUP

Journal

Title: Composite Structures

Vol. 94 No. 11

Pages: 1280-1287

ISSN: 0263-8223

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

ISI Web of Science

Scopus - 12 Citations

Scientific classification

FOS: Engineering and technology > Materials engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering

Other information

Authenticus ID: P-002-CS4

DOI: 10.1016/j.compstruct.2011.11.032

Abstract (EN): Hollow bridge piers, particularly those built before the seventies, often have insufficient shear capacity due to inadequate transverse reinforcement details. Therefore, special attention must be given to this very important aspect when reinforced concrete (RC) piers with hollow sections are analysed and retrofitted. This paper covers the experimental analysis of retrofit solutions using CFRP sheets along the piers' entire height to prevent shear failure. Experimental cyclic tests were carried out to evaluate the shear retrofit strategy efficiency on a set of RC piers with square hollow sections. This work also covers the study of design procedures for CFRP shear retrofitting and the evaluation of the associated ductility capacity improvement. The various transverse reinforcement detailing scenarios were assessed to determine their shear-failure prevention efficiency. The corresponding cyclic response behavior was also evaluated. The most relevant experimental information is presented in the paper, such as the evolution of the outer damage pattern. Finally, shear retrofit solutions, with a 40% increase over the maximum flexural force, show that this strategy is adequate to allow satisfactory ductility behavior.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8