REPORT ON TESTS ON NEOPRENE PADS UNDER REPEATED SHEAR LOADS
THE USE OF NEOPRENE PADS AS BEARING ELEMENTS FOR BRIDGE MEMBERS POSES THE QUESTION OF THEIR BEHAVIOR UNDER REPEATED LOADS. OF SPECIAL INTEREST IS THE SHEAR DEFOR- MATION OF THE PADS CAUSED BY HORIZONTAL MOTION OF THE GIRDERS RESTING ON THEM RESULTING FROM APPLICATION OF LIVE LOAD AND ALSO DUE TO THERMAL EFFECTS ON THE GIRDERS. THE TESTS DESCRIBED IN THIS REPORT WERE DEVISED TO STUDY THE EFFECTS ON NEOPRENE PADS OF REPEATED SHEAR LOADS WITH SIMULTANEOUS COMPRESSIVE LOADS, SIMULATING THE ACTUAL LOAD CONDITIONS IN A BRIDGE. THE TEST PROGRAM WAS LIMITED IN SCOPE, AND VARIABLES SUCH AS SHAPE FACTOR, THICKNESS, HARD- NESS AND MAGNITUDE OF SHEAR DEFORMATION HAVE NOT BEEN INCLUDED IN THESE STUDIES. FURTHERMORE, TESTS WERE RUN AT ROOM TEMPERATURE AND HENCE EFFECTS OF TEMPERATURE, HUMIDITY AND PRESENCE OF DELETERIOUS SUBSTANCES IN CONTACT WITH THE NEOPRENE OR IN THE ATMOSPHERE WERE NOT STUDIED. /AUTHOR/
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Supplemental Notes:
- No 242, pp 20-27, 10 FIG Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
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Authors:
- Ozell, A M
- Diniz, J F
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Discussers:
- McCready, S D
- Publication Date: 1960
Media Info
- Media Type: Digital/other
- Pagination: 8p
- Monograph Title: Bridges: bearing pads, foundations, scour and waterways
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Serial:
- Highway Research Board Bulletin
- Issue Number: 242
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Accelerated tests; Bridge bearing pads; Compression; Girders; Hardness; Live loads; Neoprene; Repeated loads; Shape; Shear strength; Thickness
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00208821
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Sep 16 1994 12:00AM