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In a method of reinforcing an existing concrete electric pole having an annular side wall, an inner hollow portion provided therein and an opening portion formed to a position of the annular side wall to be penetrated therethrough, at least one of a predetermined amount of mortar, a predetermined am

In a method of reinforcing an existing concrete electric pole having an annular side wall, an inner hollow portion provided therein and an opening portion formed to a position of the annular side wall to be penetrated therethrough, at least one of a predetermined amount of mortar, a predetermined amount of sand and a predetermined amount of gravel is injected into the inner hollow portion of the electric pole through the opening portion. A reinforcing member for reinforcing the electric pole is injected into the inner hollow portion of the electric pole through the opening portion.

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1. A method of reinforcing an existing concrete electric pole having an annular side wall, an inner hollow portion provided therein and an opening portion formed to a position of the annular side wall to be penetrated therethrough, the method comprising the steps of:injecting at least one of a prede

1. A method of reinforcing an existing concrete electric pole having an annular side wall, an inner hollow portion provided therein and an opening portion formed to a position of the annular side wall to be penetrated therethrough, the method comprising the steps of:injecting at least one of a predetermined amount of mortar, a predetermined amount of sand and a predetermined amount of gravel into the inner hollow portion of the electric pole through the opening portion; and injecting a reinforcing member for reinforcing the electric pole into the inner hollow portion of the electric pole through the opening portion; wherein at least one of said predetermined amount of mortar, said predetermined amount of sand and said predetermined amount of gravel is filled as a base portion in the inner hollow portion of a lower portion of the electric pole, and said injected reinforcing member is filled in the inner hollow portion on the base portion. 2. A method according to claim 1, wherein said reinforcing member is composed of resin and aggregates which are mixed to each other.3. A method according to claim 1, wherein said reinforcing member is composed of unshrinkable mortar.4. A method according to claim 1, wherein said electric pole is installed underground such that a portion of the electric pole stands above the ground, further comprising a step of preparing a seat member composed of aramid fiber, and a step of winding the prepared seat member around an outer periphery of at least a portion of the annular side wall, said portion ranging from a boundary portion of the electric pole adjacent to the surface of the ground to the opening portion.5. A method of reinforcing an existing concrete electric pole having an annular side wall, an inner hollow portion provided therein and an opening portion formed to a position of the annular side wall to be communicated to the inner hollow portion, the method comprising the steps of:injecting at least one of a predetermined amount of mortar, a predetermined amount of sand and a predetermined amount of gravel into the inner hollow portion of the electric pole through the opening portion; inserting a reinforcing member for reinforcing the electric pole into the inner hollow portion of the electric pole through the opening portion; and injecting filling material into a gap between the inserted reinforcing member and the inner hollow portion; wherein at least one of said predetermined amount of mortar, said predetermined amount of sand and said predetermined amount of gravel is filled as a base portion in the inner hollow portion of a lower portion of the electric pole, and said reinforcing member is filled on the base portion. 6. A method according to claim 5, wherein said opening portion is formed at a top portion of the annular side wall, at least one of said predetermined amount of mortar, said predetermined amount of sand and said predetermined amount of gravel is injected into the inner hollow portion of the electric pole through the top portion of the annular side wall, andwherein said reinforcing member is inserted into the inner hollow portion of the electric pole through the top portion of the annular side wall. 7. A method according to claim 5, wherein said reinforcing member comprises a plurality of aramid rods.8. A method according to claim 7,wherein said filling material allows said aramid rods to be arranged in a substantially longitudinal direction of the electric pole. 9. A method according to claim 7, wherein said reinforcing member further comprises a fixing member by which said plurality of aramid rods are fixed to be assembled.10. A method of reinforcing an existing concrete electric pole having an annular side wall, an inner hollow portion provided therein and an opening portion formed to a position of the annular side wall to be penetrated therethrough, the method comprising the steps of:preparing a jig member; inserting a reinforcing member for reinforcing the electric pole into the inner hollow portion of the electric pole through the opening portion while the reinforcing member is supported by the jig member; injecting at least one of a predetermined amount of mortar, a predetermined amount of sand and a predetermined amount of gravel into the inner hollow portion of the electric pole through the opening portion; and while the inserted reinforcing member is supported by the jig member, injecting filling material into a gap between the inserted and supported reinforcing member and the inner hollow portion. 11. A method according to claim 10, wherein said opening portion comprises a first opening portion and a second opening portion formed to different positions of the annular side wall to be penetrated therethrough, respectively, at least one of said predetermined amount of mortar, said predetermined amount of sand and said predetermined amount of gravel is injected into the inner hollow portion of the electric pole through the first opening portion, andwherein said reinforcing member is inserted into the inner hollow portion of the electric pole through the second opening portion. 12. A method according to claim 10, wherein said reinforcing member comprises a plurality of aramid rods.13. A method according to claim 12, wherein said reinforcing member further comprises a plurality of special reinforcements coaxially connected to one end portions of the aramid rods, respectively, each of said aramid rods having a diameter which is substantially the same as that of each of said special reinforcements.14. A method according to claim 12, wherein each of said aramid rods has one end portion to which one end portion of a string member is connected, said jig member has a plurality of through holes circumferentially arranged, andwherein said filling step comprises: a step of connecting other end portions of the string members to the through holes of the jig member, respectively, a step of handling the jig member so as to arrange the string members and the aramid rods connected thereto at same intervals thereamong in the circumferential direction; and a step of injecting the filling material into the gap between the inserted and supported reinforcing member and the inner hollow portion with the aramid rods being arranged at the same intervals thereamong in the circumferential direction.