Seismic performance of precast post-tensioned segmental columns using incremental dynamic analysis
Seismic performance of precast post-tensioned segmental columns using incremental dynamic analysis
Precast post-tensioned segmental (PPS) columns lower vulnerability of bridges because of natural hinges and rocking motion of the segments. The use of the PPS columns in bridge construction is increasing as high-quality segments are constructed offsite, and are rapidly put together onsite. Hence, the seismic performance assessment of the PPS columns is necessary to expand and improve seismic application of these columns. Therefore, this study investigates seismic behavior of the PPS columns using incremental dynamic analysis (IDA). To this end, an experimentally validated Finite Element model in OpenSees program is adopted to analyze three PPS columns with different aspect ratios. The IDA results show that the maximum seismic responses of the columns occur at their base, and also the aspect ratio of the column plays a crucial role in seismic performance assessment of the PPS columns. It is also found from fragility curves that squat columns are more prone to seismic collapse compared to slender columns.
precast post-tensioned segmental columns, accelerated bridge construction, incremental dynamic analysis, far-fault ground motions, seismic performance assessment
International Association for Earthquake Engineering
Ahmadi, Ehsan
f1994ae0-2b3e-43c9-a595-032e801aae70
Kashani, Mohammad M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
2021
Ahmadi, Ehsan
f1994ae0-2b3e-43c9-a595-032e801aae70
Kashani, Mohammad M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Ahmadi, Ehsan and Kashani, Mohammad M.
(2021)
Seismic performance of precast post-tensioned segmental columns using incremental dynamic analysis.
In The 17th World Conference on Earthquake Engineering, Sendai, Japan.
International Association for Earthquake Engineering.
7 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Precast post-tensioned segmental (PPS) columns lower vulnerability of bridges because of natural hinges and rocking motion of the segments. The use of the PPS columns in bridge construction is increasing as high-quality segments are constructed offsite, and are rapidly put together onsite. Hence, the seismic performance assessment of the PPS columns is necessary to expand and improve seismic application of these columns. Therefore, this study investigates seismic behavior of the PPS columns using incremental dynamic analysis (IDA). To this end, an experimentally validated Finite Element model in OpenSees program is adopted to analyze three PPS columns with different aspect ratios. The IDA results show that the maximum seismic responses of the columns occur at their base, and also the aspect ratio of the column plays a crucial role in seismic performance assessment of the PPS columns. It is also found from fragility curves that squat columns are more prone to seismic collapse compared to slender columns.
More information
e-pub ahead of print date: 13 September 2020
Published date: 2021
Keywords:
precast post-tensioned segmental columns, accelerated bridge construction, incremental dynamic analysis, far-fault ground motions, seismic performance assessment
Identifiers
Local EPrints ID: 446435
URI: http://eprints.soton.ac.uk/id/eprint/446435
PURE UUID: 8ecc32a0-771f-457d-8f24-0fd3159b7123
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Date deposited: 09 Feb 2021 17:32
Last modified: 26 Feb 2026 02:52
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