Structural Engineering and Mechanics

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Simplified analysis method for anti-overturning of single-column pier girder bridge

  • Liang Cao (College of Civil Engineering, Hunan University) ;
  • Hailei Zhou (College of Civil Engineering, Hunan University) ;
  • Zhichao Ren (College of Civil Engineering, Hunan University)
  • Received : 2024.05.12
  • Accepted : 2024.08.05
  • Published : 2024.08.25
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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.

Keywords

Acknowledgement

The authors are grateful for the financial support provided by the National Natural Science Foundation of China (Grant No. 52278175), and the Fundamental Research Funds for the Central Universities (Grant No. 531118010784).

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