| 摘要 |
PROBLEM TO BE SOLVED: To provide steel pipe sheet piles and a sheet pile wall composed of the steel pipe sheet piles stably usable for a long period of time regardless of the skill of field workers without influencing corrosion resistance by the shape of the steel pipe sheet piles. SOLUTION: The steel pipe sheet pile 1 has a steel pipe 2 and joints 3, 4 provided at the steel pipe 2, and the sheet pile wall 10 can be formed by connecting the joints 3, 4 to each other. At least part in the longitudinal direction of the joints 3, 4 is composed of corrosion resistant joint parts 30, 40 using stainless steel whose pitting exponent PI expressed by following expression (1) is 40 or more. A part of the surface of the steel pipe 2 is covered with a covering material 21 made of stainless steel whose pitting exponent PI expressed by the following expression (1) is 40 or more, and the corrosion resistant joint parts 30, 40 and the covering material 21 are jointed. The expression (1) is expressed by pitting exponent PI = [Cr]+3.3([Mo]+0.5[W])+16[N], wherein the inside of [ ] shows the weight percentage of each element. COPYRIGHT: (C)2004,JPO&NCIPI
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