Analysis of the impact of randomly changing vehicle loads collected from actual data on the vibration of Song Quy bridge

https://doi.org/10.31130/ud-jst.2025.488

Abstract: 216 | PDF: 121

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Author

  • Nguyen Thi Kim Loan
    The University of Danang - University of Science and Technology, Vietnam
    Nguyen Xuan Toan
    The University of Danang - University of Science and Technology, Vietnam
    Dang Cong Thuat
    The University of Danang - University of Science and Technology, Vietnam
    Nguyen Duy Thao
    The University of Danang - University of Science and Technology, Vietnam
    Tran Van Duc
    Duy Tan University, Vietnam

Keywords:

Dynamic impact factor
randomly varying loads
overloaded vehicles
vibration
Song Quy bridge

Abstract

The focus of this study is on analyzing the dynamic response and dynamic impact factor (DIF) of a simple girder bridge under vehicular live loads with randomly varying loads. The load data were collected from the Road Management Area IV, with a particular emphasis on overloaded vehicles. The bridge selected for analysis is the Song Quy bridge, located on the highway connecting Phan Thiet - Dau Giay. The analysis results indicate that, the probability distribution of the random DIF is highly complex, and there is no correlation between the probability distribution of vehicular loads and DIF. The DIF in the region of overloaded traffic increases, exceeding the limits prescribed by both the AASHTO and TCVN 11823-2017. The simultaneous increase in DIF and vehicular load poses significant risks to the bridge structure during its operational phase, accelerating the degradation of the bridge's load-bearing capacity.

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Published

Feb 28, 2025
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How to Cite
Loan, N. T. K., N. X. Toản, Đặng C. Thuật, N. D. Thảo, and T. V. Đức. “Analysis of the Impact of Randomly Changing Vehicle Loads Collected from Actual Data on the Vibration of Song Quy Bridge”. The University of Danang - Journal of Science and Technology, vol. 23, no. 2, Feb. 2025, pp. 65-70, doi:10.31130/ud-jst.2025.488.

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