TRANSIENT RESPONSE SIMULATION OF A COMPOSITE MATERIAL FOOTBRIDGE TO CROSSING PEDESTRIANS

Loads from pedestrians are particularly important for footbridges with natural frequencies close to footfall frequencies of moving pedestrians. Recorded response data from Aberfeldy Bridge, an advanced composite material footbridge in Scotland, reveals both vertical and lateral response components. No provision is made in existing codes of practice for the calculations of actual dynamic responses of pedestrian footbridges to lateral pedestrian-induced load. The aim was to develop a workable pacing frequency dependent lateral load model, to be used in conjunction with existing vertical load models, to account for such lateral excitation. This is done by correlation of the measured bridge dynamic response with results of simulations where a validated numerical model has been utilized. This paper first describes the modeling techniques used to correlate the modal properties of the finite element model with the real structure. Next, the modeling and transient solution strategies used to simulate the vertical footbridge response at different pacing frequencies are compared to actual bridge measurements to good effect. Lastly, a structure for the form of the lateral load model required to capture pacing frequency dependent lateral effects is proposed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9058096068
• Corporate Authors:

  Swets & Zeitlinger Publishers

  Heereweg 347-B
  2161 CA Lisse,   Netherlands 
• Authors:
  • FANNING, P J
  • Archbold, P
  • PAVIC, A
  • REYNOLDS, P
• Conference:
  • Recent Developments in Bridge Engineering. Proceedings of the Second New York City Bridge Conference
  • Location: New York, NY
  • Date: 2003-10-20 to 2003-10-21
• Publication Date: 2003

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 43-56

Subject/Index Terms

• TRT Terms: Bridge design; Bridge engineering; Composite construction; Composite structures; Footbridges; Live loads; Pedestrian movement; Structural models
• Geographic Terms: Scotland
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00965776
• Record Type: Publication
• ISBN: 9058096068
• Files: TRIS
• Created Date: Nov 9 2003 12:00AM