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Structural Engineering and Mechanics Volume 91, Number 4, August25 2024 , pages 403-416 DOI: https://doi.org/10.12989/sem.2024.91.4.403 |
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Simplified analysis method for anti-overturning of single-column pier girder bridge |
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Liang Cao, Hailei Zhou and Zhichao Ren
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| Abstract | ||
| The single-column pier girder bridge, due to its low engineering cost, small footprint, and aesthetic appearance, is extensively employed in urban viaducts and interchange ramps. However, its structural design makes it susceptible to eccentric loads, flexural-torsional coupling effects, and centrifugal forces, among others. To evaluate its anti-overturning performance reasonably, it is crucial to determine the reaction force of the support for the single-column pier girder bridge. However, due to the interaction between vehicle and bridge and the complexity of vibration modes, it poses a significant challenge to analyze the theory or finite element method of single-column pier girder bridges. The unit load bearing reaction coefficient method is proposed in this study to facilitate the static analysis. Numerous parameter analyses have been conducted to account for the dynamic amplification effect. The results of these analyses reveal that the dynamic amplification factor is independent of road surface roughness but is influenced by factors such as the position of the support. Based on parameter analysis, the formula of the dynamic amplification factor is derived by fitting. | ||
| Key Words | ||
| anti-overturning; dynamic amplification factor; single-column pier girder bridge; support reaction; vehiclebridge interaction | ||
| Address | ||
| Liang Cao, Hailei Zhou and Zhichao Ren: College of Civil Engineering, Hunan University, Changsha 410082, China; Key Laboratory for Damage Diagnosis of Engineering Structures of Hunan Province, Hunan University, Changsha 410082, China | ||