UNEVEN FORCE COUNTERMEASURE STRUCTURE FOR BURIED PIPE

摘要

PROBLEM TO BE SOLVED: To provide thrust protection of a bent pipe part during loading of internal pressure in regard to a pipe line buried in poor ground such as near a face of a slope of banking or an interior of a retaining wall where sufficient yield strength can not be expected, or ground with a possibility of liquefaction following an earthquake. SOLUTION: Strong geosynthetics 4 extended from a curvature center 1b side of a buried pipe 1 to a bent pipe bottom, covering an outer side 1d of the bent pipe 1 and folded back to the curvature center 1b side are laid and buried in the ground with the bent pipe 1. Thrust force W acting on the bent pipe 1 is supported by subterranean pulling resistance R of the strong geosynthetics 4.