Footbridge Response Predictions and Their Sensitivity to Stochastic Load Assumptions

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Abstrakt

Knowledge about footbridges response to actions of walking is important in assessments of vibration serviceability. In a number of design codes for footbridges, the vibration serviceability limit state is assessed using a walking load model in which the walking parameters (step frequency, pedestrian mass, dynamic load factor, etc.) are modelled deterministically. This is a simplification of matters, as the walking parameters are basically stochastic as they will be different from one pedestrian to the next. The present paper considers a stochastic approach to modelling the action of pedestrians for predicting footbridge response, which is meaningful, and a step forward. Modelling walking parameters stochastically, however, requires decisions to be made in terms of their statistical distribution and the parameters describing the statistical distribution. The paper investigates the sensitivity of results of computations of bridge response to some of the decisions to be made in this respect. This is a useful approach placing focus on which decisions (and which information) are important for sound estimation of bridge response. The studies involve estimating footbridge responses using Monte-Carlo simulations and focuses on estimating vertical structural response to single person loading.
OriginalsprogEngelsk
TitelProceedings of the IMAC-XXIX : A Conference & Exposition on Structural Dynamics
Antal sider8
Vol/bind4
ForlagSpringer
Publikationsdato2011
Sider313-320
ISBN (Trykt)978-1-4419-9315-1
DOI
StatusUdgivet - 2011
BegivenhedA Conference & Exposition on Structural Dynamics - Jacksonville, Florida, USA
Varighed: 31 jan. 20113 feb. 2011
Konferencens nummer: 29

Konference

KonferenceA Conference & Exposition on Structural Dynamics
Nummer29
LandUSA
ByJacksonville, Florida
Periode31/01/201103/02/2011

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Emneord

  • Walking Loads
  • Vibration Serviceability
  • Footbridge Vibrations

Citationsformater

Pedersen, L., & Frier, C. (2011). Footbridge Response Predictions and Their Sensitivity to Stochastic Load Assumptions. I Proceedings of the IMAC-XXIX: A Conference & Exposition on Structural Dynamics (Bind 4, s. 313-320). Springer. https://doi.org/10.1007/978-1-4419-9316-8_29