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Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component?

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Authors

  • Matin Jami
  • Said Elias
  • Rajesh Rupakhety
  • Dario De Domenico

External Research Organisations

  • University of Iceland
  • University of Messina

Details

Original languageEnglish
Title of host publicationProceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures - EUROSTRUCT 2021
EditorsCarlo Pellegrino, Flora Faleschini, Mariano Angelo Zanini, José C. Matos, Joan R. Casas, Alfred Strauss
PublisherSpringer Science and Business Media Deutschland GmbH
Pages1207-1215
Number of pages9
ISBN (print)9783030918767
Publication statusPublished - 2022
Externally publishedYes
Event1st Conference of the European Association on Quality Control of Bridges and Structures, EUROSTRUCT 2021 - Padua, Italy
Duration: 29 Aug 20211 Sept 2021

Publication series

NameLecture Notes in Civil Engineering
Volume200 LNCE
ISSN (Print)2366-2557
ISSN (electronic)2366-2565

Abstract

This study aims to investigate the effect of the vertical component of earthquake excitation on the seismic safety of bridges. Two types of three-dimensional bridges, including an ordinary beam bridge, and a suspension bridge, are modelled, and their seismic performance is evaluated under a set of seismic records. Particular emphasis is placed on near-fault pulse-type ground motions including not only the horizontal component but also the vertical component that is particularly critical for this kind of records. The axial load and bending moment are the critical response indicators checked to assess the design safety requirements of the bridges. In the numerical analysis, bridges are considered to be safe only if the moment induced by the ground motion is lower than the corresponding bending resistance. For the considered bridges and for the given set of near-fault pulse-type ground motions including the vertical component, fragility curves are constructed to show the probability of exceeding the limit state threshold representative of the safety of the bridges. The peak ground velocity is considered to be the intensity measure for developing the fragility curves. A critical comparison of fragility curves accounting for and neglecting the vertical component of the seismic excitation is illustrated. It is observed that the probability of crossing the limit state condition is significantly affected by the consideration of the vertical component. In particular, this effect is much higher in ordinary beam bridges. The analyses highlight that the seismic vulnerability of bridges is increased by the vertical component of the excitation, which requires further investigation to develop novel technological solutions and appropriate structural control strategies.

Keywords

    Beam bridge, Bridges, Earthquake engineering, Near-fault pulse-type ground motions, Suspension Bridge, Vertical component

ASJC Scopus subject areas

Cite this

Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component? / Jami, Matin; Elias, Said; Rupakhety, Rajesh et al.
Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures - EUROSTRUCT 2021. ed. / Carlo Pellegrino; Flora Faleschini; Mariano Angelo Zanini; José C. Matos; Joan R. Casas; Alfred Strauss. Springer Science and Business Media Deutschland GmbH, 2022. p. 1207-1215 (Lecture Notes in Civil Engineering; Vol. 200 LNCE).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Jami, M, Elias, S, Rupakhety, R, De Domenico, D, Falsone, G & Ricciardi, G 2022, Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component? in C Pellegrino, F Faleschini, MA Zanini, JC Matos, JR Casas & A Strauss (eds), Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures - EUROSTRUCT 2021. Lecture Notes in Civil Engineering, vol. 200 LNCE, Springer Science and Business Media Deutschland GmbH, pp. 1207-1215, 1st Conference of the European Association on Quality Control of Bridges and Structures, EUROSTRUCT 2021, Padua, Italy, 29 Aug 2021. https://doi.org/10.1007/978-3-030-91877-4_137
Jami, M., Elias, S., Rupakhety, R., De Domenico, D., Falsone, G., & Ricciardi, G. (2022). Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component? In C. Pellegrino, F. Faleschini, M. A. Zanini, J. C. Matos, J. R. Casas, & A. Strauss (Eds.), Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures - EUROSTRUCT 2021 (pp. 1207-1215). (Lecture Notes in Civil Engineering; Vol. 200 LNCE). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-030-91877-4_137
Jami M, Elias S, Rupakhety R, De Domenico D, Falsone G, Ricciardi G. Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component? In Pellegrino C, Faleschini F, Zanini MA, Matos JC, Casas JR, Strauss A, editors, Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures - EUROSTRUCT 2021. Springer Science and Business Media Deutschland GmbH. 2022. p. 1207-1215. (Lecture Notes in Civil Engineering). doi: 10.1007/978-3-030-91877-4_137
Jami, Matin ; Elias, Said ; Rupakhety, Rajesh et al. / Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component?. Proceedings of the 1st Conference of the European Association on Quality Control of Bridges and Structures - EUROSTRUCT 2021. editor / Carlo Pellegrino ; Flora Faleschini ; Mariano Angelo Zanini ; José C. Matos ; Joan R. Casas ; Alfred Strauss. Springer Science and Business Media Deutschland GmbH, 2022. pp. 1207-1215 (Lecture Notes in Civil Engineering).
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abstract = "This study aims to investigate the effect of the vertical component of earthquake excitation on the seismic safety of bridges. Two types of three-dimensional bridges, including an ordinary beam bridge, and a suspension bridge, are modelled, and their seismic performance is evaluated under a set of seismic records. Particular emphasis is placed on near-fault pulse-type ground motions including not only the horizontal component but also the vertical component that is particularly critical for this kind of records. The axial load and bending moment are the critical response indicators checked to assess the design safety requirements of the bridges. In the numerical analysis, bridges are considered to be safe only if the moment induced by the ground motion is lower than the corresponding bending resistance. For the considered bridges and for the given set of near-fault pulse-type ground motions including the vertical component, fragility curves are constructed to show the probability of exceeding the limit state threshold representative of the safety of the bridges. The peak ground velocity is considered to be the intensity measure for developing the fragility curves. A critical comparison of fragility curves accounting for and neglecting the vertical component of the seismic excitation is illustrated. It is observed that the probability of crossing the limit state condition is significantly affected by the consideration of the vertical component. In particular, this effect is much higher in ordinary beam bridges. The analyses highlight that the seismic vulnerability of bridges is increased by the vertical component of the excitation, which requires further investigation to develop novel technological solutions and appropriate structural control strategies.",
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T1 - Are Bridges Safe Under Near-Fault Pulse-Type Ground Motions Considering the Vertical Component?

AU - Jami, Matin

AU - Elias, Said

AU - Rupakhety, Rajesh

AU - De Domenico, Dario

AU - Falsone, Giovanni

AU - Ricciardi, Giuseppe

N1 - Publisher Copyright: © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

PY - 2022

Y1 - 2022

N2 - This study aims to investigate the effect of the vertical component of earthquake excitation on the seismic safety of bridges. Two types of three-dimensional bridges, including an ordinary beam bridge, and a suspension bridge, are modelled, and their seismic performance is evaluated under a set of seismic records. Particular emphasis is placed on near-fault pulse-type ground motions including not only the horizontal component but also the vertical component that is particularly critical for this kind of records. The axial load and bending moment are the critical response indicators checked to assess the design safety requirements of the bridges. In the numerical analysis, bridges are considered to be safe only if the moment induced by the ground motion is lower than the corresponding bending resistance. For the considered bridges and for the given set of near-fault pulse-type ground motions including the vertical component, fragility curves are constructed to show the probability of exceeding the limit state threshold representative of the safety of the bridges. The peak ground velocity is considered to be the intensity measure for developing the fragility curves. A critical comparison of fragility curves accounting for and neglecting the vertical component of the seismic excitation is illustrated. It is observed that the probability of crossing the limit state condition is significantly affected by the consideration of the vertical component. In particular, this effect is much higher in ordinary beam bridges. The analyses highlight that the seismic vulnerability of bridges is increased by the vertical component of the excitation, which requires further investigation to develop novel technological solutions and appropriate structural control strategies.

AB - This study aims to investigate the effect of the vertical component of earthquake excitation on the seismic safety of bridges. Two types of three-dimensional bridges, including an ordinary beam bridge, and a suspension bridge, are modelled, and their seismic performance is evaluated under a set of seismic records. Particular emphasis is placed on near-fault pulse-type ground motions including not only the horizontal component but also the vertical component that is particularly critical for this kind of records. The axial load and bending moment are the critical response indicators checked to assess the design safety requirements of the bridges. In the numerical analysis, bridges are considered to be safe only if the moment induced by the ground motion is lower than the corresponding bending resistance. For the considered bridges and for the given set of near-fault pulse-type ground motions including the vertical component, fragility curves are constructed to show the probability of exceeding the limit state threshold representative of the safety of the bridges. The peak ground velocity is considered to be the intensity measure for developing the fragility curves. A critical comparison of fragility curves accounting for and neglecting the vertical component of the seismic excitation is illustrated. It is observed that the probability of crossing the limit state condition is significantly affected by the consideration of the vertical component. In particular, this effect is much higher in ordinary beam bridges. The analyses highlight that the seismic vulnerability of bridges is increased by the vertical component of the excitation, which requires further investigation to develop novel technological solutions and appropriate structural control strategies.

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By the same author(s)