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Structural Monitoring and Maintenance
  Volume 7, Number 1, March 2020, pages 43-58
open access

Research on non-destructive testing technology for existing bridge pile foundations
Xue-feng Zhang, Ying-sheng Ni, Chunxia Song and Dong Xu

    Pile foundations of existing bridges lie in soil and water environment for long term and endure relatively heavy vertical loads, thus prone to damages, especially after stricken by external forces, such as earthquake, collision, soil heap load and etc., and the piles may be injured to certain degrees as well. There is a relatively complete technical system for quality inspection of new bridge pile foundations without structures on the top. However, there is no mature technical standard in the engineering community for the non-destructive testing technology specific to the existing bridge pile foundations. The quality of bridge pile foundations has always been a major problem that plagues bridge maintenance. On the basis of many years\' experiences in test engineering and theoretical studies, this study developed a new type of detection technology and equipment for the existing bridge piles.
Key Words
    existing bridge; pile foundation; non-destructive testing; bridge maintenance
Xue-feng Zhang, Ying-sheng Ni and Chunxia Song: Research Institute of Highway Ministry of Transport, M.O.T, Beijing, 100088, P.R. China
Dong Xu: Department of Bridge Engineering, Tongji University, Shanghai, 200092, P.R. China


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