Experimental Investigation of Skewed Elastomeric Expansion Bridge Bearings [1986]

Details

• Creators:
  Allen, Gregory D ; Murray, Thomas M.,
• Corporate Creators:
  University of Oklahoma, Norman
• Corporate Contributors:
  Oklahoma. Department of Transportation. Research & Development Division ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Skew bridges
  • Bridge engineering
  • Elastomers
  • Stiffness
  • Shear modulus
  • Bridges
  • Expansion device
• Publication/ Report Number:
  FHWA/OK 86(5)
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Oklahoma. Department of Transportation
• Abstract:
  Twelve skewed elastomeric expansion bridge bearings were supplied by the Oklahoma Department of Transportation. To evaluate the performance of these skewed bearings, the following six phases of testing were conducted on each of the twelve bearings: I. Shear and compressive stiffness tests, II. Fatigue cycles representing 50 years of service with parallel bearing surfaces, III. Shear and compressive stiffness tests, IV. Shear stiffness tests with bearings at sub-freezing temperatures, V. Fatigue cycles representing 50 years of service with rotated bearing surfaces, and VI. Shear stiffness tests Phase I formed the basis of comparison with the post-fatigue results from Phases III and VI, and the low temperature tests from Phase IV. It was found that the fatigue loading with parallel bearing surfaces had very little effect on the compressive and shear stiffnesses of the skewed bearings. Some degradation of shear stiffness was found after the fatigue loading with rotated bearing surfaces, Phase V. However, the combined degradation due to both fatigue loadings was considered insignificant.
• Format:
  PDF
• Funding:
  34, 84-11-2
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/89313/dot_89313_DS1.pdf
• File Type:
  [PDF - 16.19 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:cc0db4c71b0715d22c3a382dc7e9170d481395efee2b52ae5e86959e166f359b609b7cfb38cc805c26d171f1ccc471ae6dcb0fb60e96ba0999ee0038cab6b474