Design Method for Bridges on Lead‐Rubber Bearings
Publication: Journal of Structural Engineering
Volume 115, Issue 12
Abstract
This paper presents a design method based on a parametric study by Turkington (1987) of the response of bridge superstructures supported on leadrubber bearings and subjected to the 1940 E1 Centra (N‐S component) and Parkfield earthquakes. The study showed trends of both period shift and additional damping brought about by the inelastic behavior of the lead core in the lead‐rubber bearings, although the two earthquakes introduce different amounts of period shift and additional damping. Two design examples of four‐span bridges with different pier, abutment, and bearing arrangements are presented. The arrangements of leadrubber and elastomeric bearings are used as examples to show how seismic forces can be distributed between piers and abutments.
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References
1.
Buckle, I. G. (1984). “Factors affecting the performance of lead‐rubber energy dissipators.” Bulletin 73, New Zealand National Roads Board, Road Research Unit, 157–170.
2.
New Zealand Ministry of Works and Development. (1983). “Design of lead‐rubber bridge bearings.” Civil Division Publication 818/A, New Zealand Ministry of Works and Development, Wellington, New Zealand.
3.
Turkington, D. H. (1987). “Seismic design of bridges on lead‐rubber bearings.” Research Report 87/2, Civ. Engrg. Dept., Univ. of Canterbury, Christchurch, New Zealand.
4.
Turkington, D. H., et al. (1989). “Seismic design of bridges on lead‐rubber bearings.” J. Struct. Engrg., ASCE, 115(12), 3000–3016.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 115 • Issue 12 • December 1989
Pages: 3017 - 3030
Copyright
Copyright © 1989 ASCE.
History
Published online: Dec 1, 1989
Published in print: Dec 1989
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