Seismic performance and resilience quantification of a rocking bridge frame

Anastasios I. Giouvanidis, You Dong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Conventionally designed bridges, i.e. when the column is monolithically connected with the ground (fixed-base), sustain considerable damage at the column ends after severe earthquakes. Seismic damage often determines whether or not the bridge remains functional after an earthquake event. Rocking isolation, on the other hand, allows structural components to uplift and pivot; thus, in principle, it relieves the structure from excessive deformations and damage. However, rocking isolation is still rarely applied in engineering practice, mainly due to the lack of thorough understanding of its dynamic (seismic) performance and its post-earthquake financial benefits. This paper redirects our attention to the main benefits of rocking design, and conducts a thorough seismic loss assessment adopting two different rocking bridge configurations in terms of their post-earthquake economic losses and resilience. In particular, this work extends the well-established performance-based earthquake engineering framework to evaluate the seismic losses of the examined rocking structures accumulated following severe seismic events and quantify their post-earthquake resilience. The analysis reveals the considerably mitigated seismic losses and the remarkable post-earthquake resilience that a rocking bridge offers when carefully designed. In particular, even a slight modification of the slenderness of the structure leads to a substantial enhancement of its seismic performance; reinforcing its potential as an alternative seismic design paradigm for bridges. The above findings illustrate the considerable financial benefits of such innovative seismic-resistant structural systems, which can serve as an efficient seismic design paradigm for future bridge engineering applications.

Original languageEnglish
Title of host publicationEURODYN 2020 - 11th International Conference on Structural Dynamics, Proceedings
EditorsManolis Papadrakakis, Michalis Fragiadakis, Costas Papadimitriou
PublisherEuropean Association for Structural Dynamics
Pages3709-3723
Number of pages15
ISBN (Electronic)9786188507210
Publication statusPublished - 2020
Event11th International Conference on Structural Dynamics, EURODYN 2020 - Virtual, Athens, Greece
Duration: 23 Nov 202026 Nov 2020

Publication series

NameProceedings of the International Conference on Structural Dynamic , EURODYN
Volume2
ISSN (Print)2311-9020

Conference

Conference11th International Conference on Structural Dynamics, EURODYN 2020
CountryGreece
CityVirtual, Athens
Period23/11/2026/11/20

Keywords

  • Analytical dynamics
  • Fragility
  • Resilience
  • Rocking
  • Seismic loss

ASJC Scopus subject areas

  • Building and Construction
  • Architecture
  • Civil and Structural Engineering

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