Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars
This study employs full-scale pseudo-static cyclic tests and advanced numerical simulations to investigate the mechanical behavior and seismic performance of concrete columns reinforced with 650MPa-grade high-strength steel bars. Monotonic tensile testing demonstrates that HRB650E steel bars exhibit...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-12-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525007673 |
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| author | Yong Li Dezhang Sun Junwu Dai Yuxuan Peng Dali Fang Tao Jiang Hongyu Lei |
| author_facet | Yong Li Dezhang Sun Junwu Dai Yuxuan Peng Dali Fang Tao Jiang Hongyu Lei |
| author_sort | Yong Li |
| collection | DOAJ |
| description | This study employs full-scale pseudo-static cyclic tests and advanced numerical simulations to investigate the mechanical behavior and seismic performance of concrete columns reinforced with 650MPa-grade high-strength steel bars. Monotonic tensile testing demonstrates that HRB650E steel bars exhibit significantly higher yield and ultimate tensile strengths than lower-grade HRB400 and HRB500E specimens. And an improved shear strength model is proposed, which can enable precise prediction of the shear capacity for HRB650E reinforced concrete bridge piers, achieving a deviation margin within 3 % of experimental values. A comparative analytical evaluation reveals that bridge piers incorporating HRB650E steel bars exhibit superior performance characteristics in structural performance assessments when compared to HRB400-grade reinforcement systems, with quantifiable improvements observed in critical metrics including load-bearing capacity, ductility, and energy dissipation mechanisms. Notably, the synergistic use of C70 high-performance concrete with HRB650E steel reinforcement demonstrates enhanced load-bearing capacity in bridge pier systems. Then, a four-segment piecewise model is developed through systematic parameterization of experimental skeleton curves, delineating sequential behavioral phases: elastic deformation, crack initiation, yielding plateau, and post-peak strength degradation. Numerical simulations in OpenSees successfully replicates the hysteretic behavior of HRB650E bridge piers. This systematic investigation establishes theoretical and practical foundations for next-generation high-performance reinforced concrete infrastructure design. |
| format | Article |
| id | doaj-art-be557c0f4dc24fd1babb1f45dba0c805 |
| institution | Matheson Library |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-be557c0f4dc24fd1babb1f45dba0c8052025-06-27T05:50:34ZengElsevierCase Studies in Construction Materials2214-50952025-12-0123e04969Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel barsYong Li0Dezhang Sun1Junwu Dai2Yuxuan Peng3Dali Fang4Tao Jiang5Hongyu Lei6Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, ChinaKey Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China; Corresponding authors at: Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, China; Corresponding authors at: Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, ChinaKey Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, ChinaKey Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; Key Laboratory of Earthquake Disaster Mitigation, Ministry of Emergency Management, Harbin 150080, ChinaYunnan Fengwei Expressway Co., Ltd, ChinaThis study employs full-scale pseudo-static cyclic tests and advanced numerical simulations to investigate the mechanical behavior and seismic performance of concrete columns reinforced with 650MPa-grade high-strength steel bars. Monotonic tensile testing demonstrates that HRB650E steel bars exhibit significantly higher yield and ultimate tensile strengths than lower-grade HRB400 and HRB500E specimens. And an improved shear strength model is proposed, which can enable precise prediction of the shear capacity for HRB650E reinforced concrete bridge piers, achieving a deviation margin within 3 % of experimental values. A comparative analytical evaluation reveals that bridge piers incorporating HRB650E steel bars exhibit superior performance characteristics in structural performance assessments when compared to HRB400-grade reinforcement systems, with quantifiable improvements observed in critical metrics including load-bearing capacity, ductility, and energy dissipation mechanisms. Notably, the synergistic use of C70 high-performance concrete with HRB650E steel reinforcement demonstrates enhanced load-bearing capacity in bridge pier systems. Then, a four-segment piecewise model is developed through systematic parameterization of experimental skeleton curves, delineating sequential behavioral phases: elastic deformation, crack initiation, yielding plateau, and post-peak strength degradation. Numerical simulations in OpenSees successfully replicates the hysteretic behavior of HRB650E bridge piers. This systematic investigation establishes theoretical and practical foundations for next-generation high-performance reinforced concrete infrastructure design.http://www.sciencedirect.com/science/article/pii/S2214509525007673High-strength steel barsHRB650EFull-scaleSeismic performancePseudo-static |
| spellingShingle | Yong Li Dezhang Sun Junwu Dai Yuxuan Peng Dali Fang Tao Jiang Hongyu Lei Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars Case Studies in Construction Materials High-strength steel bars HRB650E Full-scale Seismic performance Pseudo-static |
| title | Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars |
| title_full | Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars |
| title_fullStr | Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars |
| title_full_unstemmed | Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars |
| title_short | Full-scale test and numerical study on seismic performance of bridge piers with 650 MPa grade steel bars |
| title_sort | full scale test and numerical study on seismic performance of bridge piers with 650 mpa grade steel bars |
| topic | High-strength steel bars HRB650E Full-scale Seismic performance Pseudo-static |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525007673 |
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