NONLINEAR BEHAVIOR OF ELASTOMERIC BRIDGE BEARINGS: VOLUME II - USER'S MANUAL FOR NEBBA2 - A TWO-DIMENSIONAL NONLINEAR, FINITE ELEMENT ANALYSIS FOR ELASTOMERIC BEARINGS. FINAL REPORT

A nonlinear theory and finite element analysis describing the behavior of elastomeric bridge bearings is presented. The theory includes the nonlinearities resulting from the large deformations and deflections, and the nonlinear elastic behavior of the elastomer. In addition, the large deflection of the reinforcement and possible nonlinear behavior due to "lift-off" between the bearing and the loading surface are included. Two (2-D and 3-D) FORTRAN 77 computer programs for the evaluation of the analysis are described. The validity and applicability of the theory and analysis are demonstrated by the results of an extensive "validation" study which compares predictions of bearing behavior to available experimental evidence. The results of a "parameter study" for bearings of various designs and subjected to a wide range of loading conditions are presented. While the chief motivation for the study was to demonstrate the utility of the theory and analysis, the results of the study would be of use in addressing problems arising in bearing design. An outgrowth of the study was the development of a "correction factor" to the traditional "shape factor" definition.

• Corporate Authors:

  University of California, Davis

  Pavement Research Center, One Shields Avenue
  Davis, CA  United States  95616

  California Department of Transportation

  P.O. Box 942874
  Sacramento, CA  United States  94274

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Herrmann, L R
  • Hamidi, R
• Publication Date: 1988-1

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 80 p.

Subject/Index Terms

• TRT Terms: Bridge bearings; Computer programs; Deflection; Deformation; Design; Elastomers; Finite element method; Loads; Nonlinear equations; Validation
• Uncontrolled Terms: Loading
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00467771
• Record Type: Publication
• Report/Paper Numbers: FHWA/CA/SD-88/01, UCD-CE-02
• Contract Numbers: F84SD23 624223
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 31 1988 12:00AM