Seismic performance and damage properties of flexure–shear critical RC columns with various loading cycles.
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| Title: | Seismic performance and damage properties of flexure–shear critical RC columns with various loading cycles. |
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| Authors: | Zhang, Qin1,2 (AUTHOR) qinzhang8190@gmail.com, Chen, Ming-Hui1 (AUTHOR), Li, Wen-Jie3 (AUTHOR) liwenjie@hpdi.com.cn, Gu, Xiang-Lin2 (AUTHOR), Gong, Jin-Xin4 (AUTHOR) |
| Source: | Bulletin of Earthquake Engineering. Aug2023, Vol. 21 Issue 10, p5083-5113. 31p. |
| Subject Terms: | *Seismic response, *Property damage, *Concrete columns, *Cyclic loads, *Energy dissipation, *Failure mode & effects analysis, *Reinforced concrete, *Damage models |
| Abstract: | An experimental study was conducted to investigate the effects of loading cycles on seismic behaviors and damage properties of flexure–shear critical reinforced concrete columns. Two sets of circular columns (including eight specimens) with different shear span ratios were tested under quasi-static loads with various numbers of loading cycles, namely 0 (i.e., monotonic loading), 3, 10, and 20 cycles. The failure modes, load-deformation curves, ductility, and energy dissipation capacities of the flexure–shear critical columns with various loading cycles were explored. The test results revealed that the flexure–shear failures of columns were more likely to occur with an increase in loading cycles, as evidenced by intensified shear effects and cumulative damage effects induced by cyclic loading. The study examined that the ultimate deformation was the most crucial factor that affects the damage properties of the flexure–shear critical columns. The ultimate displacements diminished with the loading cycles increasing and reduced by 38%, 50%, and 62% when the loading cycles increased from 0 to 3, 10, and 20 cycles, respectively. Additionally, the damage properties of the flexure–shear critical columns were also pertinent to cumulative energy dissipation. The cumulative energy dissipation of the column specimens significantly increased after yielding and rose in proportion to the loading cycles. Two analytical models were proposed for the evaluation of equivalent viscous damping and seismic damage index in flexure–shear columns, which considered the effects of the number of loading cycles. These models could better provide an optimal analysis of the energy dissipation capacities and damage properties for flexure–shear critical columns subjected to seismic excitations, respectively. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 165048666 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Seismic performance and damage properties of flexure–shear critical RC columns with various loading cycles. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Qin%22">Zhang, Qin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> qinzhang8190@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Ming-Hui%22">Chen, Ming-Hui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Wen-Jie%22">Li, Wen-Jie</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> liwenjie@hpdi.com.cn</i><br /><searchLink fieldCode="AR" term="%22Gu%2C+Xiang-Lin%22">Gu, Xiang-Lin</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gong%2C+Jin-Xin%22">Gong, Jin-Xin</searchLink><relatesTo>4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Bulletin+of+Earthquake+Engineering%22">Bulletin of Earthquake Engineering</searchLink>. Aug2023, Vol. 21 Issue 10, p5083-5113. 31p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Seismic+response%22">Seismic response</searchLink><br />*<searchLink fieldCode="DE" term="%22Property+damage%22">Property damage</searchLink><br />*<searchLink fieldCode="DE" term="%22Concrete+columns%22">Concrete columns</searchLink><br />*<searchLink fieldCode="DE" term="%22Cyclic+loads%22">Cyclic loads</searchLink><br />*<searchLink fieldCode="DE" term="%22Energy+dissipation%22">Energy dissipation</searchLink><br />*<searchLink fieldCode="DE" term="%22Failure+mode+%26+effects+analysis%22">Failure mode & effects analysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Reinforced+concrete%22">Reinforced concrete</searchLink><br />*<searchLink fieldCode="DE" term="%22Damage+models%22">Damage models</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: An experimental study was conducted to investigate the effects of loading cycles on seismic behaviors and damage properties of flexure–shear critical reinforced concrete columns. Two sets of circular columns (including eight specimens) with different shear span ratios were tested under quasi-static loads with various numbers of loading cycles, namely 0 (i.e., monotonic loading), 3, 10, and 20 cycles. The failure modes, load-deformation curves, ductility, and energy dissipation capacities of the flexure–shear critical columns with various loading cycles were explored. The test results revealed that the flexure–shear failures of columns were more likely to occur with an increase in loading cycles, as evidenced by intensified shear effects and cumulative damage effects induced by cyclic loading. The study examined that the ultimate deformation was the most crucial factor that affects the damage properties of the flexure–shear critical columns. The ultimate displacements diminished with the loading cycles increasing and reduced by 38%, 50%, and 62% when the loading cycles increased from 0 to 3, 10, and 20 cycles, respectively. Additionally, the damage properties of the flexure–shear critical columns were also pertinent to cumulative energy dissipation. The cumulative energy dissipation of the column specimens significantly increased after yielding and rose in proportion to the loading cycles. Two analytical models were proposed for the evaluation of equivalent viscous damping and seismic damage index in flexure–shear columns, which considered the effects of the number of loading cycles. These models could better provide an optimal analysis of the energy dissipation capacities and damage properties for flexure–shear critical columns subjected to seismic excitations, respectively. [ABSTRACT FROM AUTHOR] |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s10518-023-01736-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 31 StartPage: 5083 Subjects: – SubjectFull: Seismic response Type: general – SubjectFull: Property damage Type: general – SubjectFull: Concrete columns Type: general – SubjectFull: Cyclic loads Type: general – SubjectFull: Energy dissipation Type: general – SubjectFull: Failure mode & effects analysis Type: general – SubjectFull: Reinforced concrete Type: general – SubjectFull: Damage models Type: general Titles: – TitleFull: Seismic performance and damage properties of flexure–shear critical RC columns with various loading cycles. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zhang, Qin – PersonEntity: Name: NameFull: Chen, Ming-Hui – PersonEntity: Name: NameFull: Li, Wen-Jie – PersonEntity: Name: NameFull: Gu, Xiang-Lin – PersonEntity: Name: NameFull: Gong, Jin-Xin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2023 Type: published Y: 2023 Identifiers: – Type: issn-print Value: 1570761X Numbering: – Type: volume Value: 21 – Type: issue Value: 10 Titles: – TitleFull: Bulletin of Earthquake Engineering Type: main |
| ResultId | 1 |
