Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect
To study the intrinsic relationship between the structural response of long-span suspension bridges and the intensity measures (IMs) and to select the optimal IM to reduce the discreteness in the prediction of structural responses, this paper uses the Incremental Dynamic Analysis (IDA) method to amp...
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Ital Publication
2025-03-01
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| Series: | HighTech and Innovation Journal |
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| Online Access: | https://hightechjournal.org/index.php/HIJ/article/view/850 |
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| author | Junda Su Qinghui Lai Jinjun Hu Longjun Xu Lili Xie Yulin Zou |
| author_facet | Junda Su Qinghui Lai Jinjun Hu Longjun Xu Lili Xie Yulin Zou |
| author_sort | Junda Su |
| collection | DOAJ |
| description | To study the intrinsic relationship between the structural response of long-span suspension bridges and the intensity measures (IMs) and to select the optimal IM to reduce the discreteness in the prediction of structural responses, this paper uses the Incremental Dynamic Analysis (IDA) method to amplitude adjust near-fault pulse-like ground motions and analyzes the response using the curvature at the base of the tower as the structural response index. Then uses the four evaluation indices: efficiency, sufficiency, practicality, and proficiency to evaluate the intrinsic relationship between the structural response and the IMs. The study results indicate that, according to the four evaluation indices, the velocity-related IMs all performed well, while those displacement-related IMs performed the worst. Among them, the effective peak velocity (EPV) performed the best, being optimal in all evaluation indices except for the sufficiency relative to magnitude, which was lower than the maximum incremental velocity (MIV). Therefore, the EPV can be considered the best ground motion IM for predicting the dynamic response of long-span suspension bridges under the action of near-fault pulse-like ground motion. This result can provide a basis for the selection of IMs and structural response prediction for near-fault long-span suspension bridges, considering the impulse effect.
Doi: 10.28991/HIJ-2025-06-01-07
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| format | Article |
| id | doaj-art-3697e33a465f4ec29fa89608db486d97 |
| institution | DOAJ |
| issn | 2723-9535 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Ital Publication |
| record_format | Article |
| series | HighTech and Innovation Journal |
| spelling | doaj-art-3697e33a465f4ec29fa89608db486d972025-08-20T02:57:43ZengItal PublicationHighTech and Innovation Journal2723-95352025-03-01619110310.28991/HIJ-2025-06-01-07243Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse EffectJunda Su0Qinghui Lai1Jinjun Hu2Longjun Xu3Lili Xie4Yulin Zou51) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080,1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.Sichuan Yanjiang Panning Expressway CO., LTD., Sichuan, 615000,To study the intrinsic relationship between the structural response of long-span suspension bridges and the intensity measures (IMs) and to select the optimal IM to reduce the discreteness in the prediction of structural responses, this paper uses the Incremental Dynamic Analysis (IDA) method to amplitude adjust near-fault pulse-like ground motions and analyzes the response using the curvature at the base of the tower as the structural response index. Then uses the four evaluation indices: efficiency, sufficiency, practicality, and proficiency to evaluate the intrinsic relationship between the structural response and the IMs. The study results indicate that, according to the four evaluation indices, the velocity-related IMs all performed well, while those displacement-related IMs performed the worst. Among them, the effective peak velocity (EPV) performed the best, being optimal in all evaluation indices except for the sufficiency relative to magnitude, which was lower than the maximum incremental velocity (MIV). Therefore, the EPV can be considered the best ground motion IM for predicting the dynamic response of long-span suspension bridges under the action of near-fault pulse-like ground motion. This result can provide a basis for the selection of IMs and structural response prediction for near-fault long-span suspension bridges, considering the impulse effect. Doi: 10.28991/HIJ-2025-06-01-07 Full Text: PDFhttps://hightechjournal.org/index.php/HIJ/article/view/850intensity measuresuspension bridge responsepulse-like ground motionevaluation index. |
| spellingShingle | Junda Su Qinghui Lai Jinjun Hu Longjun Xu Lili Xie Yulin Zou Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect HighTech and Innovation Journal intensity measure suspension bridge response pulse-like ground motion evaluation index. |
| title | Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect |
| title_full | Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect |
| title_fullStr | Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect |
| title_full_unstemmed | Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect |
| title_short | Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect |
| title_sort | optimization of the ground motion intensity measure for long span suspension bridges considering the impulse effect |
| topic | intensity measure suspension bridge response pulse-like ground motion evaluation index. |
| url | https://hightechjournal.org/index.php/HIJ/article/view/850 |
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