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Design philosophy issues of fiber reinforced polymer reinforced concrete structures
This paper presents the variety of safety factors adopted by the current first generation design guidelines. It then examines the above issues further for overreinforced beams designed to resist uniformly distributed loads in accordance with the preliminary design guidelines developed in Europe. The probability of flexural failure occurring due to concrete crushing (Pfe) and the flexural notional structural reliability level (Pf) of 48 rectangular beam configurations, reinforced with Eurocrete FRP reinforcement , are determined for a number of gamma FRP (safety, factors for RFP reinforcement). The investigation is carried out for the following two cases. (1) simply supported beams reinforced with carbon FRP (CFRP) reinforcement; and (2) simply supported beams reinforced with glass FRP (CFRP) reinforcement. One of the main findings of the assessment is that the desired mode of flexural failure is not attained by the application of gammaFRP alone. Thus, in order to attain the desired mode of failure, it is necessary to apply limits on the design parameters considered by the models adopted to predict the resistance capacity. A minimum amount of reinforcement is proposed, which will ensure flexural failure due to concrete crushing. The flexural structural reliability is not uniform, due to the effect of various design parameters. The ratio of permanent to variable load is one of the most influential parameters; hence, it is recommended to adopt different load factors for different types of structures.
Design philosophy issues of fiber reinforced polymer reinforced concrete structures
This paper presents the variety of safety factors adopted by the current first generation design guidelines. It then examines the above issues further for overreinforced beams designed to resist uniformly distributed loads in accordance with the preliminary design guidelines developed in Europe. The probability of flexural failure occurring due to concrete crushing (Pfe) and the flexural notional structural reliability level (Pf) of 48 rectangular beam configurations, reinforced with Eurocrete FRP reinforcement , are determined for a number of gamma FRP (safety, factors for RFP reinforcement). The investigation is carried out for the following two cases. (1) simply supported beams reinforced with carbon FRP (CFRP) reinforcement; and (2) simply supported beams reinforced with glass FRP (CFRP) reinforcement. One of the main findings of the assessment is that the desired mode of flexural failure is not attained by the application of gammaFRP alone. Thus, in order to attain the desired mode of failure, it is necessary to apply limits on the design parameters considered by the models adopted to predict the resistance capacity. A minimum amount of reinforcement is proposed, which will ensure flexural failure due to concrete crushing. The flexural structural reliability is not uniform, due to the effect of various design parameters. The ratio of permanent to variable load is one of the most influential parameters; hence, it is recommended to adopt different load factors for different types of structures.
Design philosophy issues of fiber reinforced polymer reinforced concrete structures
Konstruktionsprinzipien für mit faserverstärkten Kunststoffen verstärkte Betonkonstruktionen
Pilakoutas, K. (author) / Neocleous, K. (author) / Gudagnini, M. (author)
Journal of Composites for Construction ; 6 ; 154-161
2002
8 Seiten, 11 Bilder, 5 Tabellen, 15 Quellen
Article (Journal)
English
Beton , Verstärkung (Festigkeit) , glasfaserverstärkter Kunststoff , carbonfaserverstärkter Kunststoff , Balken , Gebäudebauteil , Konstruktion , Sicherheitsfaktor , Bauelementzuverlässigkeit , Träger (Bauwesen) , Biegefestigkeit , Konstruktionsmethodik , statische Belastung , wechselnde Belastung , Verbundkonstruktion
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