Pole installation method

Abstract

An object of the present invention is to provide a pole erection method capable of efficiently and safely erecting a utility pole with a small number of operators even in a construction environment in which heavy machines cannot be used.The pole erection method according to the present invention includes preparing a structure 60 having a cylindrical shape in which, when the structure is erected perpendicularly to the ground with one end 60a facing down, a part of an edge 61a at the other end 60b is higher than the other part of the edge 61b (step S01), burying one end 60a of the structure 60 in the ground (step S02), placing a lower end portion 10a-1 of a utility pole 10a lying on the ground on the other part of the edge 61b of the structure 60 (step S03), pressing the lower end portion 10a-1 of the utility pole 10a against an inner wall 62 (step S04), and lifting up an upper end portion 10a-2 of the utility pole 10a with the other part of the edge 61b as a fulcrum while pressing the lower end portion 10a-1 of the utility pole 10a against the inner wall 62, and sliding down the utility pole 10a into a cavity 63 of the structure 60 to erect the pole (step S05).

1 . A pole erection method comprising:
 preparing a structure having a cylindrical shape in which, when the structure is erected perpendicularly to a ground with one end facing down, a part of an edge at another end is higher than another part of the edge;   burying the one end of the structure in the ground;   placing a lower end portion of a utility pole lying on the ground on the other part of the edge facing the part of the edge at the other end of the structure;   pressing the lower end portion of the utility pole against an inner wall on a side of the part of the edge of the structure; and   lifting up an upper end portion of the utility pole with the other part of the edge as a fulcrum while pressing the lower end portion of the utility pole against the inner wall, and sliding down the utility pole into a cavity of the structure to erect the utility pole.   
     
     
         2 . The pole erection method according to  claim 1 , wherein the edge of the other end of the structure has a shape including a cut surface obtained by linearly and obliquely cutting the structure with respect to a central axis. 
     
     
         3 . The pole erection method according to  claim 1 , wherein the edge of the other end of the structure has a shape including a cut surface obtained by obliquely cutting the structure in a curved shape with respect to the central axis. 
     
     
         4 . The pole erection method according to  claim 1 , wherein the edge of the other end of the structure has a stepped shape including the part of the edge and the other part of the edge. 
     
     
         5 . The pole erection method according to  claim 4 , wherein the other part of the edge has a wedge-shaped notch in a central portion. 
     
     
         6 . The pole erection method according to  claim 1 , wherein the part of the edge has a constant height.