Journal of Shanghai Jiaotong University ›› 2016, Vol. 50 ›› Issue (01): 158-164.

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Durability Degradation Analysis of Raymond Cylinder Pile

WU Feng1,2,WANG Dongdong2,SHI Beiling2,GONG Jinghai1,FU Kun2   

  1. (1. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai Third Harbour Engineering Science and Technology Research Institute Co. Ltd., Shanghai 200032, China)
  • Received:2014-11-14 Online:2016-01-29 Published:2016-01-29

Abstract: Abstract: In this paper, the initial boundary conditions for Raymond cylinder pile durability degradation was obtained from indoor test, and status information of the durability degradation was obtained from field sampling. Field investigation and pile body sampling were made to obtain the concrete chloride ion concentration profile of large pipe piles in service for 1 to 17 years. The degradation model for Raymond cylinder pile was built by a mathematic formula of Fick’s second law. The corrosion parameters of large pipe pile, such as the chloride ion diffusion coefficient, were obtained based on the statistical analysis of large amounts of data. Concrete chloride ion penetrations of the pile body and pile cap were compared and analyzed. The durability degradation law of Raymond cylinder pile was given, providing reference for large pipe pile durability design, use and maintenance.

Key words: Raymond cylinder pile, durability degradation, field sampling, chloride ion penetration

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