| 摘要 |
PROBLEM TO BE SOLVED: To provide a snow avalanche prevention fence, improving the strength of a column subjected to compressive force due to external force. SOLUTION: The columns 1 are erected at spaces, and a protection surface 26 is provided corresponding to the mountain side Y between the columns 1. The columns 1 are formed of a steel pipe 2 in which tensile force is introduced in the longitudinal direction. The column 1 and the mountain side slope 22 of the column 1 are connected to each other by a stay rope material 31. Since the tensile force is introduced in the longitudinal direction on the mountain side Y of a section of the steel pipe 2, when the snowfall load is applied to the protection surface 26, although the compressive force is applied to the mountain side Y below the connecting position of the column 1 to the stay rope material 31, tensile force resists against this compressive force to obtain the column 1 having strong load. COPYRIGHT: (C)2008,JPO&INPIT
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