JP-7855709-B2 - A method for reinforcing utility poles equipped with scaffolding bolt holes by supplying an injectable material to the inside of the utility pole.

Inventors

• ホン ミンキ

Assignees

• チャンジョ エスティ カンパニー リミテッド

Dates

Publication Date

20260508

Application Date

20221028

Priority Date

20220225

Claims (6)

1. A method for reinforcing a concrete utility pole 20 equipped with scaffolding bolt holes 10, comprising supplying an injectable material to the interior of the utility pole, Grout material manufacturing step S100 involves mixing and stirring the raw materials stored in a water storage tank and a powder storage tank using a mixer to produce grout material, A utility pole reinforcement preparation step S200 involves attaching a drill bit 110 to an impact drill 100 and connecting an injection device 210 to a hose connector 200 connected to the mixer, The drill bit 110 is inserted into the scaffolding bolt hole 10 formed in the utility pole, and a primary drilling step S300 is performed to perform a primary drilling of the closed rear end of the plastic member constituting the scaffolding bolt hole 10, leaving the drilled space and the drill bit intact, thereby minimizing the impact on the utility pole that occurs during drilling . The above drill bit is advanced further to perform secondary drilling in the above plastic member , and a secondary drilling step S400 is performed to expand the hole diameter in order to prevent uneven distribution when inserting the wire steel wire, The waterproofing liquid stored in the waterproofing liquid storage tank is supplied to the secondary drilled scaffolding bolt holes 10 , and then cured to form a waterproofing layer 300 on the inner surface of the utility pole in a waterproofing layer forming step S500. A wire insertion step S600 is performed to insert a large number of wire steel wires 400 into the inside of the utility pole through the secondary drilled scaffolding bolt holes 10 described above, An internal reinforcement step S700 for a utility pole involves supplying grout material through the scaffolding bolt holes 10 of the utility pole using an injection device 210 connected to a hose connector 200 connected to the above mixer, and then curing it to form a reinforcing layer 500 inside the utility pole. Includes, The above drill bit 110 is A first perforation portion 111 having a certain diameter, A second perforation portion 112 is formed following the first perforation portion and is larger in diameter than the first perforation portion, It consists of a two-tiered structure, In the first drilling step S300 described above, the first drilling portion 111 drills the closed rear end of the plastic member, A method for reinforcing a utility pole equipped with scaffolding bolt holes, characterized in that in the secondary drilling step S400, the inner diameter of the plastic member is expanded by the second drilling portion 112, thereby expanding the diameter of the scaffolding bolt hole 10 while minimizing impact on the utility pole body, wherein an injection material is supplied into the interior of the utility pole for the reinforcement of the utility pole equipped with scaffolding bolt holes.
2. The above-mentioned grout material contains a polypropylene fiber reinforcing agent, and by injecting this into the inside of the utility pole, it is possible to increase the strength due to the grout material and prevent clogging, as described in claim 1, a method for reinforcing a utility pole equipped with scaffolding bolt holes by supplying an injection material into the inside of the utility pole.
3. The hose connector 200 connected to the above mixer is A mixer coupling part 205 that is coupled to the tip of the mixer, An injection device coupling portion 207 is provided on one side of the above mixer coupling portion, which is fixed by inserting a coupling projection formed on one side of the injection device. A method for reinforcing a utility pole, characterized by comprising the following: a method for supplying an injectable substance to the interior of a utility pole equipped with scaffolding bolt holes as described in claim 1.
4. The injection device 210 described above is A coupling projection 215 is formed on one side so as to be coupled to the injection device coupling portion 207, A grout injection section 220 is connected to the above-mentioned joint protrusion and is used to inject grout material supplied from the mixer into the scaffolding bolt holes. A method for reinforcing a utility pole, characterized by comprising the above, which involves supplying an injectable material to the interior of a utility pole equipped with scaffolding bolt holes as described in claim 3.
5. The above waterproofing liquid is provided as a liquid epoxy to strengthen the adsorption force between the aging utility pole and the injected material, characterized in that the method for reinforcing a utility pole equipped with scaffolding bolt holes according to claim 1, involves supplying an injected material to the interior of the utility pole.
6. A method for reinforcing a utility pole equipped with scaffolding bolt holes, as described in claim 1, characterized in that the wire steel 400 in the above-described steel wire insertion step S600 is inserted through a scaffolding bolt hole filled with grout material, or through an upper scaffolding bolt hole.

Description

This invention relates to a method for reinforcing utility poles equipped with scaffolding bolt holes by supplying an injectable material to the interior of the pole. More specifically, it relates to a method for reinforcing utility poles equipped with scaffolding bolt holes by supplying an injectable material to the interior of the pole, which involves expanding the diameter of the threaded portion formed for fastening scaffolding bolts using a special drill bit, but only expanding the diameter of the plastic portion corresponding to the scaffolding bolt hole, thereby minimizing vibration and shock received by the utility pole and improving the work speed and safety of the worker supplying the injectable material. A utility pole is a vertical structure used to support power lines or communication lines above a certain height from the ground. It is manufactured by arranging reinforcing bars in a circular pattern, creating a circular formwork, pouring concrete, and then rotating the circular formwork to create a hollow structure, i.e., one with an empty space inside. As described above, utility poles are installed by excavating a hole to a certain depth in the ground, burying the lower part of the pole approximately 2 meters deep, and then pouring concrete. Furthermore, many accessories such as power lines, communication lines, insulators, lightning arresters, primary switchgear for transformers, and pole-mounted transformers are attached to the top of the utility pole. These types of utility poles often collapsed after installation due to the deterioration of the concrete and reduced durability caused by hollow molding. They were unable to withstand the weight of the accessories attached to the top, as well as external impacts. As described above, if a utility pole falls while in use, many accessories attached to the top of the pole, such as power lines, communication lines, insulators, lightning arresters, transformer primary switches, and pole-mounted transformers, will be damaged. This can lead to numerous problems, particularly personal injury due to high-voltage currents and damage from power outages. Specifically, with conventional concrete utility poles, the workers varied depending on the installation location and duration, resulting in differences in skill levels. Therefore, even if there were no apparent external problems, the internal structure was often not well-balanced. Furthermore, aging utility poles, due to the properties of concrete, absorb a large amount of moisture. Depending on the environment, in addition to moisture, salt and other substances can cause oxidation of the concrete and the embedded reinforcing steel. This constantly creates a risk of damage from external environmental factors, impacts, or loads from additional cables. Therefore, in order to solve the above-mentioned problems, this invention proposes a method for reinforcing utility poles equipped with scaffolding bolt holes by supplying an injection material to the interior of the utility pole. This method involves expanding the diameter of the threaded portion formed for fastening scaffolding bolts using a special drill bit, but only expanding the diameter of the plastic portion corresponding to the scaffolding bolt hole. This minimizes vibration and shock received by the utility pole, improving the work speed and safety of the worker supplying the injection material. This is a photograph showing a wire steel wire inserted into a conventional utility pole using a utility pole reinforcement method that involves supplying an injectable material to the inside of a utility pole equipped with scaffolding bolt holes according to one embodiment of the present invention.This is a cross-sectional view showing the distribution of wire steel wires after they have been inserted into a conventional utility pole using a utility pole reinforcement method that involves supplying an injectable material to the inside of a utility pole equipped with scaffolding bolt holes according to one embodiment of the present invention.This is a process diagram showing a method for reinforcing a utility pole equipped with scaffolding bolt holes, according to one embodiment of the present invention, which involves supplying an injectable material to the inside of the utility pole.This is an illustrative diagram showing a plastic scaffolding bolt hole in a utility pole reinforcement method for supplying an injection material to the inside of a utility pole to reinforce a utility pole equipped with a scaffolding bolt hole according to one embodiment of the present invention.This is an illustrative diagram showing the primary nailing step S300 and the secondary nailing step S400 in a utility pole reinforcement method for supplying an injection material to the inside of a utility pole equipped with scaffolding bolt holes, according to one embodiment of the present invention.This is an illustrative diagram showing a special drill bit used in a utility pole