Abstract
The widespread use of sliding bearings for the seismic isolation of structures requires detailed knowledge of their behavior and improved modeling capability under seismic conditions. The paper summarizes the results of a large experimental investigation on steel–PTFE interfaces, aimed at evaluating the effects of sliding velocity, contact pressure, air temperature and state of lubrication on the mechanical behavior of steel-PTFE sliding bearings. Based on the experimental outcomes, two different mathematical models have been calibrated, which are capable of accounting for the investigated parameters in the evaluation of the sliding friction coefficient. The first model is basically an extension of the model proposed by Constantinou et al. (1990)Journal of Earthquake Engineering, 116(2), 455–472, while the second model is derived from the one proposed by Changet al. (1990)Journal of Engineering Mechanics, 116, 2749–2763. Expressions of the model parameters as a function of bearing pressure and air temperature are presented for lubricated and non-lubricated sliding surfaces. Predicted and experimental results are finally compared.
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InstitutionalAuthorNameAASHTO – American Association of State Highway and Transportation Officials (1999) Guide Specifications for Seismic Isolation Design EditionNumber2 American Association of State Highway and Transportation Officials DC,Washington
CEN – Comit’e Europ’een de Normalisation. TC 167 “Structural bearings” (2000) EN 1337“Structural bearings”, Part 2: Sliding elements, Brussel, Belgium.
BS – British Standards Institution (1983) BS 5400: Steel, concrete and composite bridges, London, UK.
Computers and Structures Inc. (2002) SAP2000 Analysis Reference Manual, Version 8.0, Berkeley, CA.
M.C. Constantinou J. Caccese H.G. Harris (1987) ArticleTitleFriction characteristics of PTFEΓÇôsteel interfaces under dynamic conditions Earthquake Engineering and Structural Dynamics. 15 IssueID6 751–759
M. Constantinou A. Mokha A.M. Reinhorn (1990) ArticleTitlePTFE bearings in base isolation: modelling Journal of Earthquake Engineering 116 IssueID2 455–472
J.C. Chang J.S. Hwang G.C. Lee (1990) ArticleTitleAnalytical model for sliding behaviour of Teflon-stainless steel interfaces Journal of Engineering Mechanics 116 2479–2763
Deb, S.K. and Paul, D.K. (2000) Seismic response of buildings isolated by sliding-elastomer bearings subjected to bi-directional motion. Proceedings of the 12th World Conference on Earthquake Engineering, Auckland, New Zealand.
M. Dolce D. Cardone R. Marnetto (2000) ArticleTitleImplementation and Testing of Passive Control Devices Based on Shape Memory Alloys Earthquake Engineering and Structural Dynamics. 29 945–958
Dolce, M. (2001) Remarkable design examples concerning recent applications of innovative anti-seismic techniques to bridges and viaducts in Europe. Proceedings of the 7th International Seminar on Seismic Isolation, Passive Energy Dissipation and Active Control of Structures, Assisi, Italy.
F.G. Fan G. Ahmadi I.G. Tadjbakhsh (1988) Base isolation of a multistory building under harmonic ground motion ΓÇô A comparison of performances of various systems. National Center for Earthquake Engineering,State University of New York Buffalo
J.S. Hwang K.C. Chang G.C. Lee (1990) ArticleTitleQuasi-static and dynamic characteristics of PTFE-stainless interfaces Journal of Structural Engineering 116 IssueID10 2747–2762
A. Mokha M. Constantinou A.M. Reinhorn (1990) ArticleTitlePTFE bearings in base isolation: testing Journal of Earthquake Engineering 116 IssueID2 438–454
A. Mokha M. Constantinou A.M. Reinhorn (1993) ArticleTitleVerification of friction model of PTFE bearings under triaxial load. Journal of Structural Division ASCE 119 IssueID1 240–261
N. Mostaghel J.T. Tanbakuchi (1983) ArticleTitleResponse of Sliding Structures to Earthquake Support Motion Earthquake Engineering and Structural Dynamics. 11 729–748
N. Mostaghel (1984) Resilient-Friction Base Isolator. Department of Civil Engineering, University of Utah Salt Like City, USA
Ordinanza del PCM No 3274/2003 (2003) Primi elementi in materia di criteri generali per la classificazione sismica del territorio nazionale e di normative tecniche per le costruzioni in zona sismica, Roma, Italy.
SPSS Inc. (1999), SPSS Advanced models ΓÇô Version 9.0, Chicago, Illinois.
Takahashi Y., Iemura H., Yanagawa S. and Hibi M. (2004) Shaking table test for frictional isolated bridges and tribological numerical model of frictional isolator. Proceedings of the 13th World Conference on Earthquake Engineering, Vancouver, Canada.
P. Tsopelas M.C. Constantinou S. Okamoto S. Fuji D. Ozaki (1996) ArticleTitleExperimental study of bridge seismic sliding isolation system Engineering Structures 18 IssueID4 301–310
R.G. Tyler (1977) ArticleTitleDynamic tests on PTFE sliding layers under earthquake conditions Bulletin of the New Zealand National Society for Earthquake Engineering 10 IssueID3 129–138
Y.K. Wen (1976) ArticleTitleMethod for Random Vibration of Hysteretic Systems. Journal of the Engineering Mechanic Division,ASCE 102 EM2
V. Zayas S. Low S. Mahin (1987) The FPS earthquake protection system: experimental report. Earthquake Engineering Research Center, University of California Berkeley
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Dolce, M., Cardone, D. & Croatto, F. Frictional Behavior of Steel-PTFE Interfaces for Seismic Isolation. Bull Earthquake Eng 3, 75–99 (2005). https://doi.org/10.1007/s10518-005-0187-9
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DOI: https://doi.org/10.1007/s10518-005-0187-9