Historical development of friction-based seismic isolation systems. Issue 106 (March 2018)

• Record Type: Journal Article
• Authors: Calvi, Paolo M.; Calvi, Gian Michele
• Is Part Of: Soil dynamics and earthquake engineering. Issue 106(2018)
• Page Start: 14
• Page End: 30
• Publication Date: 2018-03
• Subjects: Base isolation -- Friction pendulum -- Multi-surface base isolation -- Friction-based isolation systems, seismic protection, seismic performance; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2017.12.003
• Languages: English
• ISSNs: 0267-7261

Abstract

Abstract: Base isolation has emerged as one of the most effective high-tech strategies for protecting infrastructure under seismic loading. This review paper discusses the historical development of friction-based seismic isolation systems, focusing on systems that have successfully been deployed and used as seismic safety measures for structures located in Europe. The conception and implementation of the Friction Pendulum system, the development of low friction materials and the effects of heating, contact pressure and velocity are discussed in light of past and recent numerical and experimental evidence. The merits of multiple surface devices, namely the Double Curvature Friction Pendulum and the Triple Friction Pendulum are also discussed, along with current knowledge and research gaps. Two European case studies, the Bolu Viaduct and the C.A.S.E. Project, are presented to illustrate that sliding base isolators can be used to meet otherwise unachievable design objectives. Finally, existing problems such as the response to high vertical accelerations, the potential for bearing uplift and the relevance of residual displacement are analyzed. Highlights: Development and application of friction-based isolation systems. Performance of single and multi-surface base isolation systems. Real European experience with base isolation systems: Bolu-Viaduct (1999) and L′Aquila (2009). Open problems and research needs.