A COMPARATIVE STUDY OF ELASTOMERIC MATERIALS FOR BRIDGE BEARING PADS

ELASTOMERIC BEARING PADS OF FIVE DIFFERENT MATERIALS WITH SHAPE FACTORS RANGING FROM ONE TO SIX WERE SUBJECTED TO A SERIES OF THREE SPECIFIC TESTS TO DETERMINE AND COMPARE THEIR RESPECTIVE LOAD-DEFORMATION CHARACTERISTICS. COMPRESSION-DEFLECTION TESTS WERE CONDUCTED TO DETERMINE SHORT TIME LOAD-DEFLECTION RESPONSES FOR SOLID PADS AND LAMINATED PADS PLACED BETWEEN BEARING SURFACES OF CONCRETE- AND-CONCRETE, CONCRETE-AND-STEEL, AND STEEL-AND-STEEL. ADDITIONAL VERTICAL DEFLECTIONS DUE TO CREEP IN THE PAD MATERIAL SUBJECTED TO A CONSTANT STATIC COMPRESSIVE STRESS WERE MEASURED OVER PERIODS RANGING FROM ONE TO THREE WEEKS. INVESTIGATIONS WERE MADE TO DETERMINE THE EFFECTS OF REPETITIVE REVERSED HORIZONTAL SHEAR FORCES ACTING ON A BEARING PAD WHILE LOADED UNDER A CONSTANT VERTICAL COMPRESSIVE STRESS. AN OBJECTIVE COMPARISON WAS MADE OF THE MATERIALS TESTED. RECOMMENDATIONS FOR A DESIGN PROCEDURE USING CURVES FROM THE EXPERIMENTAL DATA ARE OUTLINED. RECOMMENDATIONS ARE MADE FOR FUTURE RESEARCH. /AUTHOR/

• Supplemental Notes:
  • Hpr-1/3/ PaRT II, 64-03-2
• Corporate Authors:

  University of Oklahoma, Norman

  660 Parrington Oval
  Norman, OK  United States  73019-0390

  Oklahoma Department of Highways

  200 NE 21st Street
  Oklahoma City, OK  United States  73105
• Authors:
  • Sestak Jr, J J
  • Fears, F K
  • Aldridge, W W
• Publication Date: 1967-3

Subject/Index Terms

• TRT Terms: Accelerated tests; Alternatives analysis; Bearing tests; Bridge bearing pads; Compression tests; Deflection tests; Elastomers; Repeated loads; Stresses
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00215851
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS, STATEDOT
• Created Date: Mar 20 1994 12:00AM