Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect

Junda Su; Qinghui Lai; Jinjun Hu; Longjun Xu; Lili Xie; Yulin Zou

doi:10.28991/HIJ-2025-06-01-07

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Junda Su
671691429@qq.com
1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.
Qinghui Lai 1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.
Jinjun Hu Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080,, China
Longjun Xu 1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.
Lili Xie 1) State Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, China. 2) Hubei Key Laboratory of Blasting Engineering, Jianghan University, Wuhan 430056, China.
Yulin Zou Sichuan Yanjiang Panning Expressway CO., LTD., Sichuan, 615000,, China

Vol. 6 No. 1 (2025): March

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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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Su, J., Lai, Q., Hu, J., Xu, L., Xie, L., & Zou, Y. (2025). Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect. HighTech and Innovation Journal, 6(1), 91–103. https://doi.org/10.28991/HIJ-2025-06-01-07

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Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect

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Optimization of the Ground Motion Intensity Measure for Long-Span Suspension Bridges Considering the Impulse Effect

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Most Cited Articles

Towards Bayesian Quantification of Permeability in Micro-scale Porous Structures – The Database of Micro Networks

Physicochemical and Microstructural Characterization of Klias Peat, Lumadan POFA, and GGBFS for Geopolymer Based Soil Stabilization

Seismic Upgradation of RC Beams Strengthened with Externally Bonded Spent Catalyst Based Ferrocement Laminates

Temporal Trends of Rainfall and Temperature over Two Sub-Divisions of Western Ghats

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