THE RESPONSE OF BEAM AND SLAB BRIDGES TO MOVING FORCES

THE DYNAMIC RESPONSE OF A HIGHWAY BRIDGE UNDER MOVING LOADS IS USUALLY STUDIED BY TREATING THE BRIDGE AS A BEAM. SUCH A TREATMENT WOULD BE SATISFACTORY IF THE SPAN/WIDTH RATIO OF THE BRIDGE IS LARGE. HOWEVER, A MAJORITY OF HIGHWAY BRIDGES MAY HAVE SPANS COMPARABLE TO THE WIDTHS. FOR SUCH BRIDGES, THE BEAM THEORY IS NOT ADEQUATE AND A SUITABLE TWO- DIMENSIONAL THEORY WILL HAVE TO BE ADOPTED TO CONSIDER THE INFLUENCE OF THE TRANSVERSE FLEXIBILITY OF THE BRIDGE ON ITS RESPONSE. IN THIS PAPER THE DYNAMIC RESPONSE OF SIMPLE-SPAN BEAM AND SLAB HIGHWAY BRIDGES SUBJECTED TO A MOVING CONCENTRATED FORCE IS STUDIED. THE HIGHWAY BRIDGE IS TREATED AS AN ORTHOTROPIC PLATE, AND THE NORMAL MODE METHOD IS USED IN THE RESPONSE ANALYSIS. NUMERICAL RESULTS ARE PRESENTED FOR TYPICAL CASES IN THE FORM OF AMPLIFICATION SPECTRA AND HISTORY CURVES. /AUTHOR/

• Corporate Authors:

  Buchdruckerei & Verlag Leemann AG

  Arbenzstrasse 20
  8008 Zurich,   Switzerland 
• Authors:
  • Iyengar, KTSR
  • Jagadish, K S
• Publication Date: 1968

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 69-86
• Serial:
  • International Association for Brdg & Str Engr, Pub
  • Volume: 28
  • Issue Number: 2
  • Publisher: Buchdruckerei & Verlag Leemann AG

Subject/Index Terms

• TRT Terms: Beams; Bridges; Dynamic loads; Force; Highway bridges; Loads; Motion; Moving industry; Slabs
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Simple span
• ITRD Terms: 3455: Bridge; 5586: Deflection; 5421: Force; 5567: Load; 5410: Moment (force); 9050: Moving; 5408: Speed; 5931: Stiffness; 5558: Vibration
• Subject Areas: Bridges and other structures; Freight Transportation; Highways;

Filing Info

• Accession Number: 00209014
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jan 12 1975 12:00AM