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Nonlinear dynamic behaviour of severely corroded reinforced concrete columns: shaking table study

Nonlinear dynamic behaviour of severely corroded reinforced concrete columns: shaking table study
Nonlinear dynamic behaviour of severely corroded reinforced concrete columns: shaking table study

A set of benchmark, medium scale, shaking table tests on corroded reinforced concrete (RC) columns is conducted with the aim of investigating the effects of corrosion damage on the nonlinear dynamic behaviour of RC bridge piers. The experimental programme consists of an uncorroded control specimen and two corroded RC column specimens, with identical structural details. An accelerated corrosion procedure is used to corrode the RC columns. The uncorroded and corroded specimens are subjected to far-field long duration ground motion excitations. The two corroded columns had 51% and 65% average mass loss ratios. The testing sequence includes slight, extensive, and complete damage levels, followed by an aftershock to examine the cascade effect on the nonlinear dynamic response of the proposed RC columns. The experimental results show that corrosion changes the failure mode of the RC columns, and has a significant negative impact on the residual strength (about 50% mass loss results in about 80% strength reduction) and drift capacity of RC columns.

Accelerated corrosion, Corrosion, Nonlinear dynamic response, Reinforced concrete column, Shaking table test
1570-761X
1417-1443
Ge, Xiao
3df78992-78e0-4c86-b10e-dcdaa53cacdb
Dietz, Matthew S.
49f23c27-4020-4099-952a-29f9a63a7744
Alexander, Nicholas A.
544fc8c7-40a4-4e81-aaab-89e78f1a6fc9
Kashani, Mohammad M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Ge, Xiao
3df78992-78e0-4c86-b10e-dcdaa53cacdb
Dietz, Matthew S.
49f23c27-4020-4099-952a-29f9a63a7744
Alexander, Nicholas A.
544fc8c7-40a4-4e81-aaab-89e78f1a6fc9
Kashani, Mohammad M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d

Ge, Xiao, Dietz, Matthew S., Alexander, Nicholas A. and Kashani, Mohammad M. (2020) Nonlinear dynamic behaviour of severely corroded reinforced concrete columns: shaking table study. Bulletin of Earthquake Engineering, 18 (4), 1417-1443. (doi:10.1007/s10518-019-00749-3).

Record type: Article

Abstract

A set of benchmark, medium scale, shaking table tests on corroded reinforced concrete (RC) columns is conducted with the aim of investigating the effects of corrosion damage on the nonlinear dynamic behaviour of RC bridge piers. The experimental programme consists of an uncorroded control specimen and two corroded RC column specimens, with identical structural details. An accelerated corrosion procedure is used to corrode the RC columns. The uncorroded and corroded specimens are subjected to far-field long duration ground motion excitations. The two corroded columns had 51% and 65% average mass loss ratios. The testing sequence includes slight, extensive, and complete damage levels, followed by an aftershock to examine the cascade effect on the nonlinear dynamic response of the proposed RC columns. The experimental results show that corrosion changes the failure mode of the RC columns, and has a significant negative impact on the residual strength (about 50% mass loss results in about 80% strength reduction) and drift capacity of RC columns.

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Ge2019 Article Nonlinear Dynamic Behaviour - Version of Record
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More information

Accepted/In Press date: 1 November 2019
e-pub ahead of print date: 8 November 2019
Published date: 2020
Keywords: Accelerated corrosion, Corrosion, Nonlinear dynamic response, Reinforced concrete column, Shaking table test

Identifiers

Local EPrints ID: 436661
URI: http://eprints.soton.ac.uk/id/eprint/436661
ISSN: 1570-761X
PURE UUID: 4d175371-b6b5-4e53-afd8-0237bc49390f
ORCID for Mohammad M. Kashani: ORCID iD orcid.org/0000-0003-0008-0007

Catalogue record

Date deposited: 20 Dec 2019 17:52
Last modified: 07 Oct 2020 02:14

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Contributors

Author: Xiao Ge
Author: Matthew S. Dietz
Author: Nicholas A. Alexander

University divisions

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