Design Procedures for Footbridges Subjected to Walking Loads: Comparison and Remarks

Alberto Maria Avossa, Cristoforo Demartino, Francesco Ricciardelli

Abstract


This paper aims at pointing out some misconceptions concerning the evaluation of the walking-induced dynamic response of footbridges, and their impact on design procedures. First, a review of the existing Code provisions is briefly presented. In particular single-walker models and multiple-walker models are addressed; in doing so, models originally presented in different forms are made homogeneous for the purpose of comparison; their limits of applicability and advantages are pointed out. Then, the response of six steel box girder footbridges with different spans is evaluated following the provisions of existing Standards and Guidelines, and compared with allowable comfort levels. The comparison showed a wide scatter of the results, revealing some inconsistencies of the procedures, and underlining a clear need for their critical revision.

Keywords:

footbridge response models; footbridges; structural vibration assessment; vibration serviceability limit state; walking loading models; walking-induced vibrations.

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References


Allen, D. E.; Murray, T. M. 1993. Design Criterion for Vibrations due to Walking, Engineering Journal American Institute of Steel Construction 30(4): 117−129.

Avossa, A. M.; Demartino, C.; Ricciardelli F. 2017. Design Criterion for Vibrations due to Walking, in Proc. of 10th International Conference on Structural Dynamics EURODYN2017, 10−13 September, 2017, Rome, Italy.

Bachmann, H.; Ammann, W. 1987. Vibrations in Structures Induced by Man and Machines, Structural Engineering Documents vol. 3e, International Association of Bridge and Structural Engineering, Zürich, Switzerland.

Bachmann, H.; Pretlove, A. J.; Rainer, H. 1995. Dynamic Forces from Rhythmical Human Body Motions. Vibration Problems in Structures: Practical Guidelines, Birkhäuser, Basel, Switzerland.

Blanchard, J.; Davies, B. L.; Smith, J. W. 1977. Design Criteria and Analysis for Dynamic Loading of Footbridges, in Proc. of a Symposium on Dynamic Behaviour of Bridges at the Transport and Road Research Laboratory, 19 May, 1977, Crowthorne, UK, 90–106.

Brownjohn, J. M. W.; Pavic, A.; Omenzetter, P. 2004. A Spectral Density Approach for Modelling Continuous Vertical Forces on Pedestrian Structures due to Walking, Canadian Journal of Civil Engineering 31(1): 65–77. https://doi.org/10.1139/l03-072

Butz, C. 2006. Beitrag zur Berechnung fußgängerinduzierter Brückenschwingungen (On the Calculation of Pedestrian-Induced Vibration of Bridges). Ph.D. thesis, RWTH, Aachen, Germany (in German).

Eriksson, P.E.; Ohlsson S.V. 1988. Dynamic Footfall Loading from Groups of Walking People, in Proc. of Symposium Workshop on Serviceability of Buildings (Movements, Deformations, Vibrations), Vol.1, National Research Council, 16–18 May, 1988, Ottawa, Canada, 497.

Fryba, L. 1973. Vibration of Solids and Structures under Moving Loads. Noordhoff, Groningen, Netherlands.

Grundmann, H.; Kreuzinger, H.; Schneider, M. 1993. Dynamic Calculations of Footbridges, Bauingenier 68(5): 215−225. (in German)

Ingólfsson, E. T.; Georgakis, C. T.; Jönsson, J. 2012. Pedestrian- Induced Lateral Vibrations of Footbridges: a Literature Review, Engineering Structures, 45: 21−52. http://dx.doi.org/10.1016/j.engstruct.2012.05.

Matsumoto, Y.; Nishioka, T.; Shiojiri, H.; Matsuzaki, K. 1978. Dynamic Design of Footbridges, in Proc. of International Association for Bridge and Structural Engineering, Zurich, Switzer- land, 1−15.

Piccardo, G.; Tubino, F. 2012. Dynamic Response of Euler-Bernoulli Beams to Resonant Harmonic Moving Loads, Structural Engineering and Mechanics 44(5): 681−704. https://doi.org/10.12989/sem.2012.44.5.681

Racic, V.; Pavic, A.; Brownjohn, J. M. W. 2009. Experimental Identification and Analytical Modelling of Human Walking Forces: Literature Review, Journal of Sound Vibrations 326(1–2): 1–49. http://dx.doi.org/10.1016/j.jsv.2009.04.02

Ricciardelli, F. 2005. Lateral Loading of Footbridges by Walkers, in Proc. of Footbridge 2005, 2nd International Conference, 6−8 December, 2005, Venice, Italy.

Ricciardelli, F.; Pizzimenti, A. D. 2007. Lateral Walking-Induced Forces on Footbridges, Journal of Bridge Engineering 12(6): 677–688. https://doi.org/10.1061/(ASCE)1084-0702(2007)12:6(677)

Ricciardelli, F; Pansera, A. 2010. An Experimental Investigation into the Interaction among Walkers in Groups and Crowd, in Proc. of 10th International Conference Recent Advances in Structural Dynamics, 12−14 July, 2010, Southampton, UK.

Ricciardelli, F.; Briatico, C. 2011. Transient Response of Supported Beams to Moving Forces with Sinusoidal Time Variation, Journal of Engineering Mechanics 137(6): 422−430. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000241

Ricciardelli, F.; Demartino, C. 2016. Design of Footbridge against Pedestrian-Induced Vibrations, Journal of Bridge Engineering 21(8), C4015003. http://dx.doi.org/10.1061/(ASCE)BE.1943-5592.0000825#sthash.WZYa5TPy.dpuf

Van Nimmen, K.; Lombaert, G.; De Roeck, P.; Van den Broeck, P. 2014. Vibration Serviceability of Footbridges: Evaluation of the Current Codes of Practice, Engineering Structures 59(2014): 448–461. https://doi.org/10.1016/j.engstruct.2013.11.006

Venuti, F.; Bruno, L. 2009. Crowd-Structure Interaction in Lively Footbridges under Synchronous Lateral Excitation: a Literature Review, Physics Life Review 6(3): 176–206. https://doi.org/10.1016/j.plrev.2009.07.001

Tilden, C. J. 1913. Kinetic Effects of Crowds, in Proc. of American Society of Civil Engineers 39(3): 325−340. https://doi.org/10.1038/scientificamerican09131913-172supp

Zivanovic, S.; Pavic, A.; Reynolds, P. 2005. Vibration Serviceability of Footbridges under Human-Induced Excitation: a Literature Review, Journal of Sound and Vibrations 279(1–2): 1–74. https://doi.org/10.1016/j.jsv.2004.01.019




DOI: 10.3846/bjrbe.2017.12

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