SIMULATING THE DYNAMIC RESPONSE OF DIVINE BRIDGES

This paper presents dynamic models of three bridges tested as part of the recently completed Dynamic Infrastructure Vehicle Interaction Experiment (DIVINE). Two of the bridges are from tests conducted in Switzerland and the fourth is from Australian tests. The Swiss bridges have first natural frequencies of 3.0 Hz and 4.4 Hz with main span lengths 41 m and 31 m, respectively. The Cameron's Creek bridge in Australia is much shorter (9 m) with a first natural frequency of 11.3 Hz. The Deib el bridge has a first natural frequency corresponding to the bounce mode of heavy vehicles with leaf-sprung suspensions while the F ss bridge has a natural frequency slightly greater than the bounce modes of heavy vehicles. The natural frequency of the Cameron's Creek bridge corresponds to the wheel-hop modes of heavy vehicles. The bridges are modelled by simple beam models to obtain mode shapes. A comparison between the theoretical mode shapes and those obtained from tests on the bridges is made. These mode shapes are then combined into a convolution method developed by the first author to predict the dynamic response of the bridge to dynamic wheel loads. By using the Fast Fourier Transform algorithm, the convolution integral, and hence the dynamic response of the bridge, is evaluated in the frequency domain. The dynamic displacement responses of the bridges are calculated. The predicted and measured test results are compared to discuss the validity and possible refinement of the bridge and vehicle simulations. (a) For the covering entry of this conference, please see IRRD 895232.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0869107658
• Corporate Authors:

  CONFERENCE ORGANISING COMMITTEE (C/- ROADUSER RESEARCH)

  525 SPENCER STREET
  MELBOURNE, VICTORIA  Australia  3003
• Authors:
  • Green, M F
  • Xie, H
• Conference:
  • INTERNATIONAL SYMPOSIUM ON HEAVY VEHICLE WEIGHTS AND DIMENSIONS, 5TH, 1998, MAROOCHYDORE, QUEENSLAND, AUSTRALIA, PART 1
• Publication Date: 1998

Language

• English

Media Info

• Features: References;
• Pagination: p. 172-85

Subject/Index Terms

• TRT Terms: Box girders; Bridges; Concrete; Conferences; Field tests; Loads; Mathematical models; Suspension systems; Vehicles
• Geographic Terms: Australia; Switzerland
• ITRD Terms: 8006: Australia; 3474: Box girder; 3455: Bridge; 4755: Concrete; 8525: Conference; 6226: In situ; 5567: Load; 6473: Mathematical model; 1329: Suspension (veh); 8110: Switzerland; 1255: Vehicle
• Subject Areas: Bridges and other structures; Vehicles and Equipment;

Filing Info

• Accession Number: 00761482
• Record Type: Publication
• Source Agency: ARRB
• ISBN: 0-86910-765-8
• Files: ITRD, ATRI
• Created Date: Apr 6 1999 12:00AM