MODEL STUDIES OF THE DYNAMIC RESPONSE OF A MULTIGIRDER HIGHWAY BRIDGE

A LABORATORY MODEL STUDY OF THE DYNAMIC RESPONSE OF A RIGHT, SIMPLE-SPAN, BEAM AND SLAB TYPE BRIDGE HAS BEEN CONDUCTED TO OBTAIN INFORMATION ON THE NATURE OF THE TRANSVERSE DISTRIBUTION OF MOMENTS AND DEFLECTIONS IN THE STRUCTURE PRODUCED BY A MOVING VEHICLE. THE EFFECTS OF INITIAL VEHICLE OSCILLATIONS AND ROADWAY ROUGHNESS WERE STUDIED. THE MODEL OF THE BRIDGE-VEHICLE SYSTEM CONSISTED OF A SINGLE-WHEEL, SINGLE-AXLE, SPRUNG-MASS LOADING DEVICE ACTING ON A SIX-FOOT SPAN ALUMINUM MODEL OF A BEAM AND SLAB TYPE BRIDGE HAVING FIVE LONGITUDINAL GIRDERS. THE MASS OF THE VEHICLE WAS FIXED RELATIVE TO THE BRIDGE, BUT ALTERNATE SUSPENSION SPRINGS ALLOWED TWO VEHICLE FREQUENCIES TO BE CONSIDERED. VARIOUS TRANSVERSE LOCATIONS OF THE LONGITUDINAL WHEEL PATH ON THE BRIDGE DECK WERE USED. INCLUDED IN THIS BULLETIN IS A DESCRIPTION OF THE TEST APPARATUS, THE PARAMETERS INFLUENCING THE DYNAMIC RESPONSE OF THE SYSTEM, THE TRANSVERSE DISTRIBUTION OF STATIC EFFECTS, THE RESULTS OF TESTS WITH A SMOOTHLY MOVING VEHICLE, RESULTS OF TESTS WITH AN INITIALLY OSCILLATING VEHICLE, THE EFFECT OF ROADWAY UNEVENNESS, A COMPARISON OF CERTAIN DYNAMIC RESULTS WITH THEORY, AND A SUMMARY AND INTERPRETATION OF THE RESULTS. /AUTHOR/

• Supplemental Notes:
  • Hpr-1 (2), IHR-9
• Corporate Authors:

  Illinois Department of Transportation

  Division of Highways, 2300 South Dirksen Parkway
  Springfield, IL  United States  62764

  University of Illinois, Urbana-Champaign

  Urbana, IL  United States  61801
• Authors:
  • Walker, W H
• Publication Date: 1967-5

Subject/Index Terms

• TRT Terms: Distributions (Statistics); Dynamic loads; Engineering moments; Girder bridges; Highway bridges; Highways; Motion; Motor vehicles; Oscillation; Roughness
• Uncontrolled Terms: Dynamic response; Model tests; Moment distribution; Moving vehicles; Transverse distribution
• Old TRIS Terms: Bridge dynamics
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00207842
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Oct 4 1994 12:00AM