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Lead Rubber Bearings for Seismic Isolation of Structures in Cold Climates - New Developments

 Lead Rubber Bearings for Seismic Isolation of Structures in Cold Climates - New Developments
Autor(en): , ,
Beitrag für IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017, veröffentlicht in , S. 54-63
DOI: 10.2749/vancouver.2017.0054
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Nowadays, even in areas that have not been well known for the application of seismic protective measures, there is a growing tendency to design highway bridges, especially curved ones, to withstand...
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Bibliografische Angaben

Autor(en): (Mageba Mexico, Mexico City, Mexico)
(Mageba International, New York, USA)
(Mageba International, New York, USA)
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017
Veröffentlicht in:
Seite(n): 54-63 Anzahl der Seiten (im PDF): 10
Seite(n): 54-63
Anzahl der Seiten (im PDF): 10
Jahr: 2017
DOI: 10.2749/vancouver.2017.0054
Abstrakt:

Nowadays, even in areas that have not been well known for the application of seismic protective measures, there is a growing tendency to design highway bridges, especially curved ones, to withstand strong seismic demands. This paper describes the challenge faced in the seismic isolation using LRBs of a curved highway viaduct where low temperatures must be considered in the design. Specifically, the LRBs must be able to withstand temperatures as low as -30 °C for up to 72 hours, while displaying only minor variations in their effective stiffness. This extreme condition required the development of a new rubber mixture, and the optimization of the general design of the isolators. Since the relevant specifications such as AASHTO Guide Specifications for Seismic Isolation Design and EN 15129: Anti-Seismic Devices contain only limited test data relating to low- temperature performance, extensive full-scale low-temperature dynamic testing was carried out.

Stichwörter:
Seismische Isolierung tiefe Temperatur