Design and Experimental Analysis of an Externally Prestressed Steel and Concrete Footbridge Equipped with Vibration Mitigation Devices
Publication: Journal of Bridge Engineering
Volume 21, Issue 8
Abstract
A 142-m, three-span continuous footbridge over the Esino River (Italy) is considered as a case study to illustrate a number of challenging aspects in its static and dynamic design. The adoption of an optimized steel deck with a variable cross section together with the use of external prestressing tendons in the central span allows a substantial reduction of structural weights. The resulting footbridge requires a proper model for the assessment of its behavior up to the ultimate limit state as well as attention to vibration control under pedestrian loading at the service limit state. The former issue is addressed through the use of a specifically developed material and geometric nonlinear finite-element formulation. Regarding vibration control, an original combination of two different systems is used, i.e., high damping rubber (HDR) stripes and tuned mass dampers (TMDs). The HDR stripes, applied between the steel deck and the concrete floor, increase the overall damping of the footbridge, whereas the TMDs significantly reduce the accelerations at the most critical frequencies. The design of this nonconventional solution for vibration control is discussed, and the results of experimental tests in the early stage of the footbridge construction are illustrated. The experimental results allow the validation of the structural model used in the design as well as the evaluation of the influence of the HDR stripes and of the nonstructural components on the modal properties of the completed footbridge, permitting fine-tuning of the TMDs before they are installed.
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References
Allemang, R. J. (2003). “The modal assurance criterion–twenty years of use and abuse.” Sound Vib., (August),14–20.
Bachmann, H., and Ammann, W. (1987). Vibration in structures induced by man and machines, IABSE-AIPC-IVBH Structural Engineering Document, Zurich, Switzerland.
Barbato, M., Zona, A., and Conte, J. P. (2014). “Probabilistic nonlinear response analysis of steel-concrete composite beams.” J. Struct. Eng., 04013034.
Butz, C., et al. (2008). “Advanced load models for synchronous pedestrian excitation and optimised design guidelines for steel foot bridges.” Final Rep. EUR 23318 EN, RFCS Project SYNPEX RFSR-CT-2003-00019, European Commission, Brussels, Belgium.
Caetano, E., Cunha, A., Magalhães, F., and Moutinho, C. (2010). “Studies for controlling human-induced vibration of the Pedro e Inês footbridge, Portugal. Part 2: Implementation of tuned mass dampers.” Eng. Struct., 32(4), 1082–1091.
CEN (European Committee for Standardization). (1997). “Eurocode 5: Design of timber structures-Part 2: Bridges.” ENV 1995-2, Brussels, Belgium.
Dall’Asta, A. (1996). “On the coupling between three-dimensional bodies and slipping cables.” Int. J. Solids Struct., 33(24), 3587–3600.
Dall’Asta, A., and Dezi, L. (1998). “Nonlinear behavior of externally prestressed composite beams: Analytical model.” J. Struct. Eng., 588–597.
Dall’Asta, A., and Ragni, L. (2006). “Experimental tests and analytical model of high damping rubber dissipating devices.” Eng. Struct., 28(13), 1874–1884.
Dall'Asta, A., and Ragni, L. (2008a). “Dynamic systems with high damping rubber: Nonlinear behaviour and linear approximation.” Earthquake Eng. Struct. Dyn., 37(13), 1511–1526.
Dall'Asta, A., and Ragni, L. (2008b). “Nonlinear behavior of dynamic systems with HDR.” Eng. Struct., 30(12), 3610–3618.
Dall’Asta, A., Ragni, L., and Zona, A. (2007a). “Analytical model for geometric and material nonlinear analysis of externally prestressed beams.” J. Eng. Mechan., 133(1), 117–121.
Dall’Asta, A., Ragni, L., and Zona A. (2007b). “Simplified method for failure analysis of concrete beams prestressed with external tendons.” J. Struct. Eng., 121–131.
Dall'Asta, A., and Zona, A. (2005). “Finite element model for externally prestressed composite beams with deformable connection.” J. Struct. Eng., 706–714.
Den Hartog, J. P. (1985). Mechanical vibrations, Dover Publications, New York.
Ebrahimpour, A., and Sack L. R. (2005). “A review of vibration serviceability criteria for floor structures.” Comput. Struct., 83(28–30), 2488–2494.
Fujino, Y., Pacheco, B. M., Nakamura, S., and Warnitchai, P. (1993). “Synchronization of human walking observed during lateral vibration of a congested pedestrian bridge.” Earthquake Eng. Struct. Dyn., 22(9), 741–758.
Li, Q., Fan, J., Nie, J., Li, Q., and Chen, Y. (2010). “Crowd-induced random vibration of footbridge and vibration control using multiple tuned mass dampers.” J. Sound Vib., 329(19), 4068–4092.
Magalhães, F., Cunha, A., Caetano, E., Brincker, R. (2010). “Damping estimation using free decays and ambient vibration tests.” Mechan. Syst. Sig. Process., 24(5), 1274–1290.
Peeters, B., Van der Auweraer, H., Guillaume, P., and Leuridan, J. (2004). “The PolyMAX frequency-domain method: a new standard for modal parameter estimation?” Shock Vib. 11(3–4), 395–409.
Rainer, J. H., Pernica, G., and Allen, D. E. (1988). “Dynamic loading and response of footbridges.” Can. J. Civil Eng., 15(1), 66–71.
Soong, T. T., and Dargush, G. F. (1997). Passive energy dissipation systems in structural engineering, Wiley, New York.
Ungar, E. E., and Kerwin, E. M., Jr. (1962). “Loss factors of viscoelastic systems in terms of strain energy.” J. Acoust. Soc. Am., 34(7), 954–958.
Van Nimmen, K., Lombaert, G., De Roeck, G., and Van den Broeck, P. (2014). “Vibration serviceability of footbridges: Evaluation of the current codes of practice.” Eng. Struct., 59(February), 448–461.
Živanovič, S., Pavic, A., and Reynolds, P. (2005). “Vibration serviceability of footbridges under human-induced excitation: a literature review.” J. Sound Vib., 279(1–2), 1–74.
Zona, A., Barbato, M., and Conte, J. P. (2006). “Finite element response sensitivity analysis of continuous steel-concrete composite girders.” Steel Compos. Struct., 6(3), 183–202.
Zona, A., Barbato, M., Dall’Asta, A., and Dezi, L. (2010). “Probabilistic analysis for design assessment of continuous steel-concrete composite girders.” J. Constr. Steel Res., 66(7), 897–905.
Zona, A., Ragni, L., and Dall’Asta, A. (2008). “Finite element formulation for geometric and material nonlinear analysis of beams prestressed with external slipping tendons.” Finite Elem. Anal. Des., 44(15), 910–919.
Zona, A., Ragni, L., and Dall’Asta, A. (2009). “Simplified method for the analysis of externally prestressed steel-concrete composite beams.” J. Constr. Steel Res., 65(2), 308–313.
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© 2016 American Society of Civil Engineers.
History
Received: Jan 12, 2015
Accepted: Aug 6, 2015
Published online: Jan 5, 2016
Discussion open until: Jun 5, 2016
Published in print: Aug 1, 2016
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