EFFECTS OF SURFACE IRREGULARITIES UPON THE DYNAMIC RESPONSE OF BRIDGES UNDER SUSPENDED MOVING LOADS

The effects of surface irregularities upon the dynamic response of bridges under suspended moving loads is analyzed by means of a theoretical study. The paper deals with geometrical imperfections of two-types, global and local ones. The former may represent irregularities due to permanent loads, creep process or deflections produced by prestressing forces acting on young concrete. The local ones may represent the initial joint or local defects. The vehicle dynamics model is a simple degree of freedom oscillator and the method of analysis used is a Rayleigh-Ritz one. In some cases the amplification factors are found to be much greater than those given by current international design codes and the dynamic effects can no longer be neglected. (Author/TRRL)

• Availability:
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• Corporate Authors:

  Academic Press Incorporated

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• Authors:
  • Palamas, J
  • Coussy, O
  • Bamberger, J
• Publication Date: 1985-3-22

Media Info

• Features: Figures; References;
• Pagination: p. 235-245
• Serial:
  • Journal of Sound and Vibration
  • Volume: 99
  • Issue Number: 2
  • Publisher: Elsevier
  • ISSN: 0022-460X
  • EISSN: 1095-8568
  • Serial URL: http://www.sciencedirect.com/science/journal/0022460X

Subject/Index Terms

• TRT Terms: Bridges; Creep; Defects; Deflection; Dynamic loads; Dynamics; Fresh concrete; Live loads; Loads; Mathematical analysis; Mathematical models; Motion; Moving industry; Vehicle dynamics; Vehicles; Vibration
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Bridge dynamics
• ITRD Terms: 6471: Analysis (math); 3455: Bridge; 4732: Creep (mater); 5586: Deflection; 5473: Dynamics; 3071: Evenness; 4750: Fresh concrete; 5567: Load; 6473: Mathematical model; 9050: Moving; 1255: Vehicle; 5558: Vibration
• Subject Areas: Bridges and other structures; Freight Transportation; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00451400
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: May 31 1986 12:00AM