Design spectra for single person loading scenario on footbridges
Wan, Keith, Živanović, Stana and Pavić, Aleksandar (2009) Design spectra for single person loading scenario on footbridges. In: IMAC XXVII Conference & Exposition on Structural Dynamics, Orlando, FL, U.S.A., Feb 9-12, 2009. Published in: Proceedings of the IMAC XXVIIFull text not available from this repository.
Official URL: http://www.sem.org/Proceedings/ConferencePapers-Pa...
Slender structural forms are common in modern footbridge design. This slenderness has increased the potential for excessive vibrations in as-built structures. Popular codes, such as British BS5400, no longer provide adequate guidance for designers assessing vibration serviceability of footbridges. The method used in BS5400 is based on an out-dated deterministic procedure and often produces results that are not consistent with experimentally measured vibration responses. Its main drawback is that it does not account for the intrinsic differences within a real pedestrian population. Therefore, a natural way forward is to include, now well documented, inter- and intra-subject variability in the force modelling and response calculation, which leads to a probabilistic approach to vibration response estimation. This paper utilises a recently developed probabilistic procedure for estimation of vibration response to single person loading scenario to develop a series of design spectra that could be used in vibration serviceability design as an alternative to BS5400. The design spectra constructed have different probability of exceedance and are developed for the vertical direction. The spectra were successfully verified against experimental data for an as-built footbridge.
|Item Type:||Conference Item (Paper)|
|Subjects:||T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TG Bridge engineering
T Technology > TH Building construction
|Divisions:||Faculty of Science > Engineering|
|Journal or Publication Title:||Proceedings of the IMAC XXVII|
|Publisher:||The Society for Experimental Mechanics, Inc.|
|Access rights to Published version:||Restricted or Subscription Access|
|Conference Paper Type:||Paper|
|Title of Event:||IMAC XXVII Conference & Exposition on Structural Dynamics|
|Type of Event:||Conference|
|Location of Event:||Orlando, FL, U.S.A.|
|Date(s) of Event:||Feb 9-12, 2009|
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