Damping in building structures by means of PTFE sliding joints

Authors

  • R. G. Tyler DSIR Physics and Engineering Laboratory, Lower Hutt, New Zealand

DOI:

https://doi.org/10.5459/bnzsee.10.3.139-142

Abstract

The characteristics of PTFE sliding joints when used to separate secondary components from the main structure of a building are described. Their use enables damping of earthquake and wind motions to be obtained within the normal elastic range of the structure, and beyond, by virtue of the frictional forces generated, while temperature movements are at the same time accommodated. In addition a positive fixing is obtained which is a useful alternative to the hung-type of fixing which is at present recommended where separation is required.

Further testing is needed to obtain more friction data on filled PTFE materials and suitable joints need to be developed.

References

Skinner, R. I., Omote , S., Osawa, Y. and Yoshimi, Y. Philippines Luzon Earthquake of 2 August 1968 . Unesco Serial No. 977/BMS. RD/SCE. NR. Paris, January, 1969.

Blume, J. A., Newmark, N. M. , Corning, L. H., Design of Multistorey Reinforced Concrete Buildings for Earthquake Motions. Portland Cement Association, Illinois, 1961.

Glogau, O. A., Separation of Non-Structural Components in Buildings. Bull. N.Z. Nat. Soc. Earthq. Eng. 9 No. 3, Wellington, September, 1976. DOI: https://doi.org/10.5459/bnzsee.9.3.141-158

Blakeley, R. W. G., A Review of the Code Provisions for Separation of Elements and Buildings. Bull. N.Z. Nat. Soc. Earthq. Eng. 7 No. 3. September 1974. DOI: https://doi.org/10.5459/bnzsee.7.3.130-143

Tyler, R. G., Dynamic Tests on PTFE Sliding Layers Under Earthquake Conditions. Bull. N.Z. Nat. Soc. Earthq. Eng. (to be published).

Dupont, E.I. de Nemours & Co. (Inc) Suggested Specifications for Filled Teflon TFE Resins used in Bearing Pads, Delaware, U.S.A.

The Glacier Metal Company Ltd. DU Dry Bearings, Designer's Handbook No. 2, Wembley, England, 1973.

The Society of the Plastic Industry Inc., Fluorocarbons Division. Proposed Standard for TFE Structural Bearing Surfaces (FD-117), Park Avenue, N.Y.

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Published

30-09-1977

How to Cite

Tyler, R. G. (1977). Damping in building structures by means of PTFE sliding joints. Bulletin of the New Zealand Society for Earthquake Engineering, 10(3), 139–142. https://doi.org/10.5459/bnzsee.10.3.139-142

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