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Experimental determination of the stress evolution in a prebent steel very high-performance concrete beam by means of an active stressmeter

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Conclusions

This experimental research allowed to emphasize two main factors for the quality of the measurements by active stress-meters: on one hand, the accuracy of the location and the orientation of the jacks considering the severe conditions during the casting and in contrast, and the reliability with time of the embedded strain gages considering the possible presence of important electric disturbances in the environment. However, during 4 months, the quality of the strain signals used for the control turned out satisfactory and the obtained values are close to the theoretical computation. The evolution of the pressure during the same period shows a good regularity and a good agreement between the measurements and the values computed by the two-function method using the CEB-MC90 model code in its 1999 version for the prediction of concrete creep and shrinkage11 and the model of Yue and Taerwe10 for the creep recovery law (maximal difference of only 0.6 MPa after 4 months of recording). The aim of the direct measurement of stresses can be considered as reached, the prediction of the stress state in the beam according to the two-function method being validated with a precision of ±1.5% (uncertainty of about 1 MPa for a devise designed for a stress range up to 35 MPa).

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References

  1. Baes, L., and Lipski, A., “La poutre Preflex, la décompression du béton enrobant l’aile tendue, le problème du retrait et du fluage” [in French], Revue C (Gent) I-4:29–49 (1957).

  2. Morano, G.S., and Mannini, C., “Preflex Beams: A Method of Calculation of Creep and Shrinkage Effects,” Journal of Bridge Engineering 21(1):48–58 (2006) ASCE.

    Article  Google Scholar 

  3. Staquet, S., and Espion, B., ‘Deviations from the Principle of Superposition and their Consequences on Structural Behavior’, Shrinkage and Creep of Concrete, ACI SP-227, American Concrete Institute, Farmington Hills, MI (2005).

  4. Le Roy, R., D éformations instantanées et différées des bétons à hautes performances, Etudes et Recherches des LPC [in French], LCPC, Paris, OA 22 (1996).

  5. Staquet, S., Boulay, C., D’Aloïa, L., Le Roy, R., Espion, B., and Toutlemonde, F., Creep and shrinkage of a self-compacting VHPC in prebent composite beams for innovative railway bridges in France. Part I: modelling. Part II: case study at the structural scale, ACI SP-246, American Concrete Institute, Farmington Hills, MI (2007).

    Google Scholar 

  6. BPEL, “Règles BPEL 91 modifiées 99 (Règles techniques de conception et de calcul des ouvrages et constructions en béton pré-contraint suivant la méthode des états limites) fascicule n° 62 titre 1er section II du CCTG applicable aux marchés publics de travaux, JO du 16 février 1999” [in French] (1999).

  7. Abdunur, C., Duchêne, J.-L., Derkx, F., Merliot, E., and Joly, M., “Suivi direct des contraintes dans les structures en béton: dispositifs pour ouvrages existants et en construction, Instrumentation” [in French], Mesure, Métrologie, RS série I2M, 3(1–2):37–51 (2003).

    Google Scholar 

  8. Abdunur, C. “Mesure de contraintes sur ouvrages d’art par une méthode de libération miniaturisée, Bulletin de liaison des Laboratoires des Ponts et Chaussées” [in French], 138, Juillet-Août 5–14 (1985).

  9. Roussel, N., Staquet, S., D’Aloia, L., Le Roy, R., and Toutlemonde, F., “SCC casting prediction for the realization of prototype VHPC-precambered composite beams,” Materials and Structures 40(9):877–887 (2007). RILEM.

    Article  Google Scholar 

  10. de Larrard, F., and Sedran, T., “Une nouvelle approche de la formulation des bétons” [in French], Annales du BTP 6:39–54 (1996).

    Google Scholar 

  11. Yue, L.L., and Taerwe, L., “Two-function Method for the Prediction of Concrete creep under decreasing stress,” Materials and Structures 26:268–273 (1993).

    Article  Google Scholar 

  12. fib-CEB-FIP, “Structural Concrete Volume 1,” Bulletin fib, N°1 Federation Internationale du Béton, Lausanne, Switzerland (1999).

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Authors and Affiliations

  1. Service BATir, Université Libre de Bruxelles, Brussels, Belgium

    S. Staquet

  2. Division Métrologie et Instrumentation, Université Paris-Est, LCPC, Paris, France

    E. Merliot, C. N’Guyen Van Phu & F. Derkx

  3. Section Fonctionnement et Ingénierie des Ouvrages d’Art, Université Paris-Est, LCPC, Paris, France

    F. Toutlemonde

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  1. S. Staquet
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  2. E. Merliot
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  3. C. N’Guyen Van Phu
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  4. F. Derkx
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  5. F. Toutlemonde
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Correspondence to S. Staquet.

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Staquet, S., Merliot, E., Van Phu, C.N. et al. Experimental determination of the stress evolution in a prebent steel very high-performance concrete beam by means of an active stressmeter. Exp Tech 33, 34–42 (2009). https://doi.org/10.1111/j.1747-1567.2008.00319.x

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  • DOI: https://doi.org/10.1111/j.1747-1567.2008.00319.x

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