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Integral abutment bridges: Investigation of seismic soil‐structure interaction effects by shaking table testing.

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Title: Integral abutment bridges: Investigation of seismic soil‐structure interaction effects by shaking table testing.
Authors: Fiorentino, Gabriele1 (AUTHOR), Cengiz, Cihan2 (AUTHOR), De Luca, Flavia2 (AUTHOR) flavia.deluca@bristol.ac.uk, Mylonakis, George2,3,4 (AUTHOR), Karamitros, Dimitris2 (AUTHOR), Dietz, Matt2 (AUTHOR), Dihoru, Luiza2 (AUTHOR), Lavorato, Davide1 (AUTHOR), Briseghella, Bruno5 (AUTHOR), Isakovic, Tatjana6 (AUTHOR), Vrettos, Christos7 (AUTHOR), Topa Gomes, Antonio8 (AUTHOR), Sextos, Anastasios2 (AUTHOR), Nuti, Camillo1,5 (AUTHOR)
Source: Earthquake Engineering & Structural Dynamics. May2021, Vol. 50 Issue 6, p1517-1538. 22p.
Subjects: Shaking table tests, Soil-structure interaction, University of Bristol, Bridge abutments, Earthquake engineering, Bridge floors
Abstract: In recent years there has been renewed interest on integral abutment bridges (IABs), mainly due to their low construction and maintenance cost. Owing to the monolithic connection between deck and abutments, there is strong soil‐structure interaction between the bridge and the backfill under both thermal action and earthquake shaking. Although some of the regions where IABs are adopted qualify as highly seismic, there is limited knowledge as to their dynamic behaviour and vulnerability under strong ground shaking. To develop a better understanding on the seismic behaviour of IABs, an extensive experimental campaign involving over 75 shaking table tests and 4800 time histories of recorded data, was carried out at EQUALS Laboratory, University of Bristol, under the auspices of EU‐sponsored SERA project (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The tests were conducted on a 5 m long shear stack mounted on a 3 m × 3 m 6‐DOF earthquake simulator, focusing on interaction effects between a scaled bridge model, abutments, foundation piles and backfill soil. The study aims at (a) developing new scaling procedures for physical modelling of IABs, (b) investigating experimentally the potential benefits of adding compressible inclusions (CIs) between the abutment and the backfill and (c) exploring the influence of different types of connection between the abutment and the pile foundation. Results indicate that the CI reduces the accelerations on the bridge deck and the settlements in the backfill, while disconnecting piles from the cap decreases bending near the pile head. [ABSTRACT FROM AUTHOR]
Copyright of Earthquake Engineering & Structural Dynamics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 149664711
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  Data: Integral abutment bridges: Investigation of seismic soil‐structure interaction effects by shaking table testing.
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  Data: <searchLink fieldCode="AR" term="%22Fiorentino%2C+Gabriele%22">Fiorentino, Gabriele</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cengiz%2C+Cihan%22">Cengiz, Cihan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22De+Luca%2C+Flavia%22">De Luca, Flavia</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> flavia.deluca@bristol.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Mylonakis%2C+George%22">Mylonakis, George</searchLink><relatesTo>2,3,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Karamitros%2C+Dimitris%22">Karamitros, Dimitris</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dietz%2C+Matt%22">Dietz, Matt</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dihoru%2C+Luiza%22">Dihoru, Luiza</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lavorato%2C+Davide%22">Lavorato, Davide</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Briseghella%2C+Bruno%22">Briseghella, Bruno</searchLink><relatesTo>5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Isakovic%2C+Tatjana%22">Isakovic, Tatjana</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vrettos%2C+Christos%22">Vrettos, Christos</searchLink><relatesTo>7</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Topa+Gomes%2C+Antonio%22">Topa Gomes, Antonio</searchLink><relatesTo>8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sextos%2C+Anastasios%22">Sextos, Anastasios</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Nuti%2C+Camillo%22">Nuti, Camillo</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Earthquake+Engineering+%26+Structural+Dynamics%22">Earthquake Engineering & Structural Dynamics</searchLink>. May2021, Vol. 50 Issue 6, p1517-1538. 22p.
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  Data: <searchLink fieldCode="DE" term="%22Shaking+table+tests%22">Shaking table tests</searchLink><br /><searchLink fieldCode="DE" term="%22Soil-structure+interaction%22">Soil-structure interaction</searchLink><br /><searchLink fieldCode="DE" term="%22University+of+Bristol%22">University of Bristol</searchLink><br /><searchLink fieldCode="DE" term="%22Bridge+abutments%22">Bridge abutments</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquake+engineering%22">Earthquake engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Bridge+floors%22">Bridge floors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In recent years there has been renewed interest on integral abutment bridges (IABs), mainly due to their low construction and maintenance cost. Owing to the monolithic connection between deck and abutments, there is strong soil‐structure interaction between the bridge and the backfill under both thermal action and earthquake shaking. Although some of the regions where IABs are adopted qualify as highly seismic, there is limited knowledge as to their dynamic behaviour and vulnerability under strong ground shaking. To develop a better understanding on the seismic behaviour of IABs, an extensive experimental campaign involving over 75 shaking table tests and 4800 time histories of recorded data, was carried out at EQUALS Laboratory, University of Bristol, under the auspices of EU‐sponsored SERA project (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The tests were conducted on a 5 m long shear stack mounted on a 3 m × 3 m 6‐DOF earthquake simulator, focusing on interaction effects between a scaled bridge model, abutments, foundation piles and backfill soil. The study aims at (a) developing new scaling procedures for physical modelling of IABs, (b) investigating experimentally the potential benefits of adding compressible inclusions (CIs) between the abutment and the backfill and (c) exploring the influence of different types of connection between the abutment and the pile foundation. Results indicate that the CI reduces the accelerations on the bridge deck and the settlements in the backfill, while disconnecting piles from the cap decreases bending near the pile head. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Earthquake Engineering & Structural Dynamics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/eqe.3409
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        Text: English
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        PageCount: 22
        StartPage: 1517
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      – SubjectFull: Shaking table tests
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      – SubjectFull: Soil-structure interaction
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      – SubjectFull: University of Bristol
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      – SubjectFull: Bridge abutments
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      – SubjectFull: Earthquake engineering
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      – SubjectFull: Bridge floors
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              Text: May2021
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