Exploring the performance of experimentally benchmarked RC bridge pier models when subjected to sequential seismic shocks
Exploring the performance of experimentally benchmarked RC bridge pier models when subjected to sequential seismic shocks
In this paper we explore the performance of RC bridge piers to seismic ground motion sequences, using both experimental and numerical models. Four RC columns were tested on the University of Bristol’s shake table. These columns contained both well-confined and poor-confined cases. Spectrally matched by near-field without pulse (NFWP), near-field pulse-like (NFPL) and far-field (FF) ground motion records where employed in a sequential/progressive fashion ranging from (I) slight damage (II) extensive damage (III) complete damage and (IV) aftershock cases. These experimental test results are then used to develop a benchmarked OpenSees model of this bridge pier. The importance of the concrete tension constitutive model is highlighted. The differences between sequential (progressive damage) and neglecting sequential seismic events are discussed. The benchmarked model is then used for a heuristic case using incremental dynamic analyses. A comparison is made between drift and energy dissipation performance measures, that suggests drift cannot identify the increased system damage induced by sequential events.
Finite element modelling, RC bridge piers, drift, energy dissipation, mainshock-aftershock, shaking table test, Energy dissipation, Shaking table test, Drift, Mainshock-aftershock sequences
1530-1543
Ge, Xiao
10e10ee6-c5d4-4891-83e6-e430f170ce95
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Sun, Zhi-Guo
29b2bd59-956c-4be7-bead-6343541408a9
Yang, Yu-Qing
3c783eae-3edc-4cab-a8f5-3d2a5a22d070
Alexander, Nicholas
a0ccbb7a-2f91-44b6-a09b-2bea8b9f9ddc
November 2022
Ge, Xiao
10e10ee6-c5d4-4891-83e6-e430f170ce95
Kashani, Mohammad
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Sun, Zhi-Guo
29b2bd59-956c-4be7-bead-6343541408a9
Yang, Yu-Qing
3c783eae-3edc-4cab-a8f5-3d2a5a22d070
Alexander, Nicholas
a0ccbb7a-2f91-44b6-a09b-2bea8b9f9ddc
Ge, Xiao, Kashani, Mohammad, Sun, Zhi-Guo, Yang, Yu-Qing and Alexander, Nicholas
(2022)
Exploring the performance of experimentally benchmarked RC bridge pier models when subjected to sequential seismic shocks.
Structures, 45, .
(doi:10.1016/j.istruc.2022.09.119).
Abstract
In this paper we explore the performance of RC bridge piers to seismic ground motion sequences, using both experimental and numerical models. Four RC columns were tested on the University of Bristol’s shake table. These columns contained both well-confined and poor-confined cases. Spectrally matched by near-field without pulse (NFWP), near-field pulse-like (NFPL) and far-field (FF) ground motion records where employed in a sequential/progressive fashion ranging from (I) slight damage (II) extensive damage (III) complete damage and (IV) aftershock cases. These experimental test results are then used to develop a benchmarked OpenSees model of this bridge pier. The importance of the concrete tension constitutive model is highlighted. The differences between sequential (progressive damage) and neglecting sequential seismic events are discussed. The benchmarked model is then used for a heuristic case using incremental dynamic analyses. A comparison is made between drift and energy dissipation performance measures, that suggests drift cannot identify the increased system damage induced by sequential events.
More information
Accepted/In Press date: 30 September 2022
e-pub ahead of print date: 6 October 2022
Published date: November 2022
Additional Information:
Funding Information:
This work has received financial support from the Natural Science Foundation of Hebei Province (project number: E2021202111 ) and the Open Research Fund Program of Guangdong Key Laboratory of Earthquake Engineering and Application Technology (project number: 2020B1212060071 ).
Publisher Copyright:
© 2022 Institution of Structural Engineers
Keywords:
Finite element modelling, RC bridge piers, drift, energy dissipation, mainshock-aftershock, shaking table test, Energy dissipation, Shaking table test, Drift, Mainshock-aftershock sequences
Identifiers
Local EPrints ID: 471468
URI: http://eprints.soton.ac.uk/id/eprint/471468
ISSN: 2352-0124
PURE UUID: 1eeca4d7-cb09-4955-8d3a-8f13f216af6c
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Date deposited: 08 Nov 2022 18:56
Last modified: 23 Apr 2024 04:01
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Contributors
Author:
Xiao Ge
Author:
Zhi-Guo Sun
Author:
Yu-Qing Yang
Author:
Nicholas Alexander
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