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Structural Monitoring and Maintenance
  Volume 10, Number 2, June 2023 , pages 107-116

Study on safety early-warning model of bridge underwater pile foundations
Xue-feng Zhang and Chun-xia Song

    The health condition of of deep water high pile foundation is vital to the safe operation of bridges. However, pier foundations are vulnerable to damage in deep water due to exposure to sea torrents and corrosive environments over an extended period. In this paper, combined with an investigation and analysis of the typical damage characteristics of main pier group pile foundations, we study the safety monitoring and real-time early warning technology of the deep water high pile foundations, we propose an early warning index item and early warning threshold of deep water high pile foundation by utilizing a numerical simulation analysis and referring to domestic and foreign standards and literature. First, we combine the characteristics of structures and draw on more mature evaluation theories and experience in civil engineering-related fields such as dam and bridge engineering. Then, we establish a scheme consisting of a Early Warning Index Systemand evaluation model based on the analytic hierarchy process and constant weight evaluation method and apply the research results to a project based on the Jiashao bridge in Zhejiang province, China. Finally, we verify the rationality and reliability of the Early Warning Index Systemof the Deep Water High Pile Foundations.
Key Words
    early warning index; early warning threshold; evaluation method; safety monitoring; underwater pile foundations
Xue-feng Zhang and Chun-xia Song: Research Institute of Highway Ministry of Transport, M.O.T, Beijing, 100088, P.R. China

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