Teflon Bearings in Aseismic Base Isolation: Experimental Studies and Mathematical Modeling

Keywords: Teflon, Seismic Isolation, Base Isolation, Bridges, Structures, Teflon-Steel Interfaces, Sliding Bearings, Coefficients of Friction, and Polished Stainless Steel.

Abstract: This report describes the frictional properties of Teflon-steel interfaces in relation to their application in sliding bearings for base isolated building and bridge structures. A number of laboratory tests have been conducted to determine the effect of sliding velocity, sliding acceleration, bearing pressure, type of Teflon and surface finish on the frictional characteristics of sliding bearings. Aspects of mathematical modeling and application of results in the analysis of sliding isolation systems are considered.