PIPE BURIED STRUCTURE AND METHOD OF MANUFACTURING THE SAME

摘要

A pipe buried structure includes: a pipe whose outer periphery on a cross section has a flattened shape obtained by curving both ends in a longitudinal direction; a base material including a concave portion to which the pipe is fitted, the concave portion having an inner wall which abuts a portion corresponding to the longitudinal direction of the outer periphery; and a deposition layer formed by accelerating powder made of metal or alloy together with gas to spray and deposit the powder in a solid phase state on surfaces of;the pipe and the base material in a state in which the pipe is fitted to the concave portion, wherein a ratio h/R between a protruding amount h by which the pipe protrudes from the surface of the base material and a curvature R at the both ends is not smaller than 0.25 and not larger than 0.5.

主权项

1. A pipe buried structure comprising:
a pipe made of metal or alloy, an outer periphery on a cross section of the pipe having a flattened shape obtained by curving both ends in a longitudinal direction; a base material made of metal or alloy comprising a concave portion to which the pipe is fitted, the concave portion having an inner wall which abuts a portion corresponding to the longitudinal direction of the outer periphery; and a deposition layer formed by accelerating powder made of metal or alloy together with gas to spray and deposit the powder in a solid phase state on surfaces of the pipe and the base material in a state in which the pipe is fitted to the concave portion, wherein a ratio h/R between a protruding amount h by which the pipe protrudes from the surface of the base material and a curvature R at the both ends is not smaller than 0.25 and not larger than 0.5.