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Title: PRESSURE DISTRIBUTION IN SLIDING INTERFACE OF SPHERICAL BRIDGE BEARING
Accession Number: 00743582
Record Type: Component
Record URL: Availability: Find a library where document is available Abstract: Relevant literature indicates that the critical parameters relating to load transfer in the curved, sliding, compression-only, polytetrafluoroethylene (PTFE)-metal interface of a spherical bearing under an external applied horizontal load are the ratio of the horizontal load to the vertical load and the ratio of the radius of curvature to the plan diameter of the interfacing spherical surfaces. An experimental program measuring the stress-displacement relationship of confined PTFE discs under uniaxial and eccentric compressive loadings is described, and a bilinear stress-displacement relationship is proposed. This stress-displacement relationship is incorporated into a displacement model to predict the stress distribution in the PTFE in the curved interface, and results from the model are compared with those from a finite-element model. The displacement model is used to develop design charts for spherical bearings under combined vertical and horizontal loads.
Supplemental Notes: This paper appears in Transportation Research Record No. 1594, Part 2: Structures.
Language: English
Corporate Authors: Transportation Research Board 500 Fifth Street, NW Authors: Campbell, T IGreen, M FKoppens, N CAgarwal, A CPagination: p. 154-162
Publication Date: 1997
Serial: ISBN: 0309062020
Features: Figures
(14)
; References
(10)
TRT Terms: Uncontrolled Terms: Old TRIS Terms: Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls
Files: TRIS, TRB
Created Date: Dec 5 1997 12:00AM
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