DYNAMIC RESPONSE OF SINGLE SPAN HIGHWAY BRIDGES

The dynamic response of single span simply supported bridge decks subjected to the passage of vehicles is examined. A modal analysis approach is adopted, that is based upon a finite strip idealization of the deck. The vehicle is modelled as a rigid body supported at two points by a suspension idealization that accounts for the effect of tyre stiffness and the frictional nature of real suspension systems. Results are presented for an orthotropic slab deck and a box girder deck that illustrate the effects of (I) the initial precompression of the suspension system as the vehicle enters the span, (II) the ratio of the vehicle's natural frequency to that of the bridge deck and (III) a bridge deck surface profile that is not perfectly horizontal. (a) (TRRL)

• Corporate Authors:

  Wiley (John) & Sons, Limited

  Baffins Lane
  Chichester, Sussex  England 
• Authors:
  • Hutton, S G
  • Cheung, Y K
• Publication Date: 1979-12

Media Info

• Features: Figures; References;
• Pagination: p. 543-553
• Serial:
  • Earthquake Engineering and Structural Dynamics
  • Volume: 7
  • Issue Number: 6
  • Publisher: Wiley (John) & Sons, Limited

Subject/Index Terms

• TRT Terms: Behavior; Box girders; Bridge decks; Bridge members; Bridges; Compression; Dynamics; Friction; Highway bridges; Length; Mathematical models; Motion; Motor vehicles; Moving industry; Natural frequency; Speed; Stiffness; Stiffness tests; Suspension systems; Suspensions; Tires; Vehicles
• Uncontrolled Terms: Bridge spans; One; Orthotropic bridge deck
• Old TRIS Terms: Bridge dynamics
• ITRD Terms: 9001: Behaviour; 3474: Box girder; 3455: Bridge; 3482: Bridge deck; 5532: Compression; 5473: Dynamics; 5452: Friction; 6473: Mathematical model; 9050: Moving; 5549: Natural frequency; 9054: One; 3490: Orthotropic plate; 3452: Span; 5408: Speed; 5931: Stiffness; 1329: Suspension (veh); 1381: Tyre; 1255: Vehicle
• Subject Areas: Bridges and other structures; Design; Freight Transportation; Highways; Vehicles and Equipment; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00329641
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: May 21 1981 12:00AM