KR102152396B1 - The structure to extend the length for penetration of prestressed concrete pole and the method thereof - Google Patents

Abstract

The present invention relates to a length extension composite structure for reinforcing the depth of the concrete pole in order to increase the overturning safety of the pole by attaching it to the lower end of the concrete pole, and in more detail, it is made in a column shape. A lower structure that increases the supporting power of the pole and prevents it from sinking, and the upper structure that is formed in a column shape and is fixedly coupled to the upper part of the lower structure, and the pole is inserted into the upper structure to reinforce the proximal depth of the pole and inserted into the upper structure. It characterized in that it comprises a wedge member for fixing the electric pole.

Description

Length extension composite structure for reinforcing the depth of the concrete pole and its manufacturing method {THE STRUCTURE TO EXTEND THE LENGTH FOR PENETRATION OF PRESTRESSED CONCRETE POLE AND THE METHOD THEREOF}

The present invention relates to a length extension composite structure for reinforcing the depth of the concrete pole in order to increase the horizontal bearing capacity and the safety of the electric pole by attaching to the lower end of the concrete pole to secure the depth of the pole.

Due to the recent development of communication networks, the number of ships has increased, the load on the pole is constantly increasing due to natural disasters such as typhoons, heavy rains, and floods, and overturning accidents are frequently occurring due to the weakening of the ground due to the loss of soil. In addition, the demand for securing horizontal bearing capacity and overturning safety of poles is constantly increasing.

In general, concrete poles are in the shape of a cylinder with a gentle gradient, and are manufactured in lengths from 10m to maximum 16m in consideration of cargo transportation conditions.

These poles are built by excavation of a circular pit.At this time, the depth of the poles is varied depending on the load applied to the poles and the condition of the soil, and the depth of the high-strength concrete poles of 16m length generally used in Korea is 2.8m. Has been.

As described above, the depth of penetration of the 16m high-strength concrete pole is defined as 2.8m, but in the case of soft ground or slopes such as sandy soil and clay with a lot of moisture, an additional depth of 1m is added to secure the support of the pole and the safety rate of fall. Must be constructed.

However, in the case of installing on the ground in consideration of the length of the concrete pole 10, which is specified as a maximum of 16m, if the concrete pole 10 is deeply inserted from 2.8m to 3.8m as shown in FIG. Due to the deviation length (Ha) of the electric pole 10, the height of the power line is also lowered, which increases the risk of safety accidents.

In order to solve this problem, if the length of the pole is longer than 17m, the use of the pole is bound to be limited due to transportation problems. Therefore, when it is not possible to secure a sufficient depth of penetration in the construction of Jeonju, as shown in FIG. 2, the Jeonju construction is secured by installing the Jeonju near the ground, or by additionally constructing a branch line and a pillar.

However, in the case of near Jeonju, a large effect cannot be obtained on soft ground, and in the case of securing support through branch lines and posts, it is often difficult to increase construction cost and secure additional space in a narrow construction site. Have.

In order to solve the above-described conventional problem, the extension type root cost that is attached to the lower part of the pole, but extends the length of the pole to secure the depth of infeed, and replaces the branch line and the pole, can increase the horizontal support and the safety of the felling of the pole. The purpose is to provide a composite structure that extends the length of the equipped concrete pole.

In order to solve the above-described technical problem, the length-extending composite structure for reinforcing the depth of proximal to a concrete pole according to the present invention is formed in a column shape, but consists of a lower structure that increases the supporting power of the pole and prevents settling, and a column shape. It is fixedly coupled to the upper portion, characterized in that the electric pole is inserted into the upper structure to reinforce the proximal depth of the electric pole, and a wedge member for fixing the electric pole inserted into the upper structure.

In addition, it is preferable that the lower structure can maintain the column shape by a reinforced structure made of a plurality of PC steel wires.

In addition, the lower portion of the lower structure further includes a circular approximate body protruding outwardly, and the lower structure is preferably formed by curing the concrete structure.

In addition, the upper structure is formed to extend downwardly in the lower part, but is cured in a state inserted into the lower structure to improve the adhesion between the upper structure and the lower structure, the attachment protrusion formed on the inner surface of the upper structure, the outer surface of the electric pole It is preferable to include a guide protrusion for guiding the electric pole inserted in contact with to be located at the center of the upper structure, and a support means supported on the ground so that the electric pole can be stably inserted into the upper structure.

In addition, the support means is formed to have a predetermined length in the shape of a bar or a bar, and is supported on the ground to support the upper structure, and at least one or more protruding from the outer surface of the upper structure is formed, and the support bar is inserted therein. It is preferable to include an insertion piece provided so that the upper structure can be supported on the corresponding ground.

In addition, the wedge member is composed of two powders and is coupled to the upper structure to have a ring shape, but a pair of seating bodies having a flange seated on the upper structure of the upper structure, and protruding downward from the lower surface of each of the seating bodies, the upper structure It is preferable to include a wedge body that is fitted between the inner surface and the outer surface of the electric pole to fix the electric pole inserted into the upper structure in a wedge manner.

In addition, the outer diameter of the flange is formed equal to or larger than the outer diameter of the upper structure, and the flange is preferably formed with a first coupling hole for fixedly coupling with a fastening piece in which the first through hole of the upper structure is formed by a fastening means.

In addition, the wedge body is preferably formed to protrude to have an arc shape in the longitudinal direction of the seating body, or to have a plurality of protrusions to have an arc shape adjacent to each other in the longitudinal direction of the seating body.

In addition, it is preferable that the wedge body is opposed to the second through hole formed in the upper structure, and a second coupling hole for fixing the upper structure and the seating body is formed by a fastening means.

According to the present invention, a lower structure formed to have a predetermined height using a concrete material differently from the prior art, an upper structure that is fixedly coupled to the upper portion of the lower structure, but the electric pole is inserted to a predetermined depth therein, and the upper structure inserted into the upper structure. In addition to securing the depth of penetration of the corresponding pole inserted into the excavated earth hole through the composition of the wedge member between the poles, the horizontal support of the poles using a circular rough body formed under the lower structure according to the nature of the ground And it has the effect of increasing the conduction stability and reducing the construction cost and providing convenience of construction by replacing the branch line and the support.

1 and 2 are views showing a conventional electric pole installation.
Figure 3 is a view showing a length extension composite structure for reinforcing the depth of the concrete pole in accordance with the present invention.
Figure 4 is an exploded view of Figure 3;
5 is a view showing a lower structure of a length-extended composite structure for reinforcing the depth of the concrete pole according to the present invention.
Figure 6 is a view showing the upper structure of the length-extended composite structure for reinforcing the depth of the concrete pole in accordance with the present invention.
Figure 7 is a state of use of the support means for Figure 6.
Figure 8 is a perspective view of the wedge member of the length extension composite structure for reinforcing the depth of the concrete pole in accordance with the present invention.
9 is a coupling relationship between the wedge member and the upper structure of FIG. 8;
Fig. 10 is a plan view of Fig. 8;
11 is another embodiment of the wedge member of the length-extended composite structure for reinforcing the depth of the concrete pole in accordance with the present invention.
12 is a plan view of FIG. 11;
Fig. 13 is a diagram showing a coupling relationship with Fig. 11;
14 is another embodiment of the wedge member of the length-extended composite structure for reinforcing the depth of the concrete pole according to the present invention.
15 is a plan view of FIG. 14;
Fig. 16 is a diagram showing a coupling relationship with Fig. 14;
Figure 17 is a state of use of the length extension composite structure for reinforcing the depth of the concrete pole in accordance with the present invention.
18 is a flow chart showing a method of manufacturing a length-extended composite structure for reinforcing the depth of the concrete pole in accordance with the present invention.
19 to 22 are diagrams illustrating step-by-step molding of a lower structure combined with an upper structure using the mold of FIG. 18;
23 is another embodiment of the mold of the manufacturing method of the length-extended composite structure for reinforcing the depth of the proximal to the concrete pole according to the present invention.

Hereinafter, with reference to the accompanying drawings, a length extension composite structure for reinforcing the depth of proximal penetration of a concrete pole according to the present invention (hereinafter simply referred to as a'composite structure') will be described in detail.

First, as shown in FIGS. 3 and 4, the composite structure according to the present invention largely includes a lower structure 100, an upper structure 200, and a wedge member 300.

In more detail, as shown in FIGS. 4 and 5, the lower structure 100 increases the supporting force of the corresponding pole (E/P) when inserting the pole (E/P) into the ground, It is a configuration to prevent settling.

The lower structure 100 is formed into a column shape by curing of a concrete structure that is introduced into a mold 20 to be described later, and a skeleton is formed inside the structure by a general reinforced structure 110 so that the column shape can be maintained. (See Figs. 21 and 22).

The lower structure 100 formed by curing of the concrete structure is cured with the attachment protrusion 210 protruding downwardly inserted into the upper structure 200 so that it can be fixedly coupled with the upper structure 200. .

On the lower outer surface of the lower structure 100, a circular approximation body 120 having a different diameter is formed further protruding outward and is inserted into the upper structure 200 to support the electric pole (E/P) inserted into the earthwork hole It improves and prevents subsidence by increasing the contact area.

In addition, the upper structure 200 is fixedly coupled to the upper portion of the lower structure 100, but the electric pole (E/P) is inserted into the lower structure 100, but with reference to FIGS. 4, 6 and 7 Together with this, it is a configuration to reinforce the depth of the root of the electric pole (E/P).

The upper structure 200 is formed of a steel pipe made of a metal material so that the lower part of the electric pole (E/P) can be inserted therein, and at least one attachment protrusion 210 under the upper structure 200 Is formed to protrude to facilitate fixed coupling with the lower structure 100.

Here, the attachment protrusion 210 is formed to protrude to have a plurality of radially downward lengths below the upper structure 200 formed in a cylindrical shape, and the attachment protrusion 210 is inserted into the lower structure 100 to be cured. The upper structure 200 and the lower structure 100 are fixedly coupled to each other.

At this time, it is preferable that the lower portion of the attachment protrusion 210 is bent at a predetermined angle to increase the bonding force between the upper structure 200 and the lower structure 100.

On the inner surface of the steel pipe-shaped upper structure 200, at least two guide protrusions 220 for guiding the inserted electric pole (E/P) to be inserted at the center of the upper structure 200 protrude in the inward direction. Is formed.

On the other hand, the outer surface of the upper structure 200 may further include a support means 230 for supporting the electric pole (E/P) to be stably inserted when the electric pole (E/P) is inserted therein, and the support means 230 is a support rod (231) and an insertion piece (233).

The support rod 231 is made of a rod or bar (BAR) shape having a predetermined length, and the length is formed larger than the diameter of the earthwork hole so that it is on the ground before inserting the composite structure according to the present invention into the earthwork hole. The upper structure 200 is to be supported by the earthwork hole.

The insertion piece 233 is formed so that a plurality of components are symmetrically formed on the outer surface of the upper structure 200, and the support rod 231 supported outside the earth hole is inserted so that the upper structure 200 can be stably supported on the ground. do.

At this time, it is preferable that the insertion piece 233 has a shape bent at a right angle so that the support rod 231 is stably inserted and the upper structure 200 can be mounted.

And, the wedge member 300 is a configuration for fixing the pole (E / P) inserted into the upper structure 200, referring to Figures 8 to 10, the seating body 310 and the wedge body 320- 1,320-2).

The seating body 310 is composed of a pair of bodies having a ring shape as a whole, and a flange 311 for seating the upper structure 200 is formed on the outer surface thereof.

At this time, the flange 311 is formed to have the same diameter as the outer diameter of the upper structure 200, as shown, so that the seating body 310 is seated on the upper end of the upper structure 200 or the outer diameter of the flange 311 It is preferable that the upper structure 200 is formed larger than the outer diameter so that the flange 311 can perform the function of the approximate body 120 (see FIGS. 11 to 13 ).

In addition, the flange 311 is formed with a first coupling hole 313 for fixedly coupling with the upper structure 200 by a fastening means (P) such as bolts or screws, and the upper structure 200 is also provided with the first The first through hole 241 is perforated at a position opposite to the coupling hole 313 so that the seating body 310 and the upper structure 200 can be fixed to each other by the fastening means P (Fig. 10 and 12)

The wedge body (320-1, 320-2) is formed protruding downward from the lower portion of the seating body (310) consisting of a pair, between the inner surface of the upper structure (200) and the outer surface of the electric pole (E/P) inserted into the upper structure (200) The fixing force between the upper structure 200 and the electric pole (E/P) is maximized by fitting and coupling in a wedge method (see FIG. 7 ).

At this time, the wedge body 320-2 is formed protruding to have an arc shape as one unit along the length direction of each seating body 310 or to each of the seating bodies 310 It is desirable to have the shape of the wedge body 320-1 so that it is protruding adjacently and can be fitted between the upper structure 200 and the electric pole (E/P) (see FIG. 14).

In addition, the wedge body 320-2 may be provided with a second coupling hole 321 for having the same effect as the first coupling hole 313 described above, if necessary, and the second coupling hole 321 In the upper structure 200 at a position opposite to, a second through hole 250 through which the fastening means P is inserted is formed (see FIGS. 15 and 16 ).

Hereinafter, a method of manufacturing a length-extended composite structure for reinforcing the depth of protrusion of a concrete pole according to the present invention will be described in detail below with reference to the accompanying drawings based on the configuration of the composite structure described above. .

Prior to the description, as shown in FIG. 18, the manufacturing method according to the present invention is largely 1) forming a wedge member (S100), 2) forming an upper structure (S200), 3) forming a reinforcing bar structure Step (S300), 4) Inserting the upper structure and the reinforced structure into the lower mold (23) (S400), 5) Injecting concrete into the lower mold (S500), 6) Rotating the mold to make the upper structure It includes a step (S600) of forming the fixedly installed substructure (S600) and a step (S700) of demolding the substructure (S700), and the following manufacturing method will be described in more detail.

First, the manufacturing method according to the present invention is a wedge member including a seating body 310 and a wedge body 320-1, 320-2 made of any one of the above-described embodiments using a mold means (not shown). (300) is molded with a metal material, and the standard for forming the wedge body (320-1,320-2) is selected and formed according to the nature of the ground by the authority of the operator or manager who intends to install the pole (10) on the ground. To be able to do it.

Then, the upper structure 200 including the guide protrusion 220 and the attachment protrusion 210 is molded into a steel pipe shape using another mold means.

The height of the upper structure 200 can be molded by varying the height according to the properties of the electric pole (E/P) or the ground (see FIG. 13).

In addition, the attachment protrusion 210 is formed to protrude downwardly from the lower surface of the upper structure 200 so as to have a length that is contrasted with the height of the upper structure 200 to increase the binding force with the lower structure 100.

Then, as shown in FIG. 19, the reinforcing bar structure 110 forming the skeleton of the lower structure 100 is formed, but the reinforcing bar structure 110 is radially disposed adjacent to each other, and the spacing thereof is maintained. It consists of a combination of spiral iron poles that are wound in a spiral direction.

Thereafter, as shown in FIG. 20, the upper mold 200 and the reinforcing bar structure 110 previously formed in the previous step are inserted into the lower mold 23 from which the upper mold 21 is removed.

At this time, each attachment protrusion 210 protruding under the upper structure 200 is provided inside the lower mold 23 so that a part of it can be inserted into the reinforcement structure 110 to form the lower structure 100. It is preferable to allow the upper structure 200 and the upper structure 200 to be easily fixedly coupled to each other by the attachment protrusion 210.

In addition, the reinforced structure 110 and the upper structure 200 are inserted, and the forming space part 27 in which the lower structure 100 to which the upper structure 200 is combined is formed is formed in the lower mold 23 including the inside of the upper mold 21. ) Is formed inside, and the molding space part 27 is formed separately from each other by the partition wall 25 so that a plurality of substructures 100 can be molded through one mold 20.

Then, as shown in FIG. 21, the concrete mixture for forming the lower structure 100 is injected into the forming space portion 27 formed at least one or more in the lower mold 23.

Then, by rotating the mold 20 in which the upper mold 21 is coupled to the lower mold 23 so that the airtightness of the molding space part 27 can be maintained, the centrifugal force can be applied to the inside of the mold 20. Consisting of the lower structure 100 provided with the sieve 120, the concrete is cured so that the lower structure 100 fixedly coupled to the upper structure 200 can be formed.

Finally, as shown in FIG. 22, the upper mold 21 is removed, and the lower structure 100 molded by curing concrete is demolded in the molding space 27, and the manufacturing method according to the present invention is All will be completed.

On the other hand, as shown in FIG. 23, the mold 20 forms a plurality of molding spaces 27, and the upper structure 200 and the lower structure 100 according to the present invention through one of the mold 20 It is also possible to form a plurality of.

As shown in FIG. 17, the composite structure according to the present invention having such a configuration has a lower structure 100 formed to have a predetermined height using a concrete material differently from the prior art, and the lower structure 100 is fixed to the upper part. Combined, but in the earth hole excavated through the configuration of the wedge member 300 between the upper structure 200 into which the electric pole 10 is inserted to a predetermined depth and the electric pole 10 inserted into the upper structure 200 In addition to securing the proximal depth of the electric pole 10 to be inserted, the horizontal support and conduction of the electric pole 10 by using the circular root body 120 formed under the lower structure 100 according to the nature of the ground. It has the effect of increasing stability and reducing construction cost and providing convenience of construction by replacing branch lines and posts.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things that are equivalent or equivalent to the claims as well as the claims to be described later belong to the scope of the spirit of the present invention. .

100: substructure 110: reinforced structure
120: approximate body 200: superstructure
210: attachment protrusion 220: guide protrusion
230: support means 231: support rod
233: insertion piece 240: fastening piece
241: first through hole 250: second through hole
300: wedge member 310: seating body
311: flange 313: first coupling hole
320-1,320-2: wedge body 321: second coupling hole
E/P: Jeonju P: Fastening means

Claims (11)

Doedoe made in the shape of a column, the lower structure 100 for preventing settlement and increase of the supporting force of the electric pole (E/P);
An upper structure 200 formed in a column shape, fixedly coupled to the upper portion of the lower structure 100, and inserting the electric pole (E/P) therein to reinforce the proximal depth of the electric pole (E/P); And
Including; a wedge member 300 for fixing the electric pole (E / P) inserted into the upper structure 200,
The upper structure 200 is
An attachment protrusion 210, which is formed extending downwardly in the lower part, but is cured in a state inserted into the lower structure 100 to improve adhesion between the upper structure 200 and the lower structure 100, and the upper structure ( 200) a guide protrusion 220 protruding on the inner surface and guiding the electric pole (E/P) inserted in contact with the outer surface of the electric pole (E/P) to be located at the center of the upper structure 200, the upper part A length extension composite structure for reinforcing the depth of proximal to a concrete pole, characterized in that it comprises a supporting means 230 supported on the ground so that the pole (E/P) can be stably inserted into the structure 200.
The method of claim 1,
The lower structure 100 is a length-extended composite structure for reinforcing the depth of the concrete pole, characterized in that to maintain the column shape by the reinforcement structure (110).
The method of claim 1,
Under the lower structure 100
A length-extended composite structure for reinforcing the depth of protrusion of a concrete pole, characterized in that it further comprises a circular approximate body 120 protruding outwardly, and the lower structure 100 is formed by curing the concrete structure.
delete The method of claim 1,
The support means 230 is
It is formed to have a predetermined length in the shape of a bar or a bar, and is supported on the ground to support the upper structure 200, at least one support rod 231 protruding from the outer surface of the upper structure 200, A length extension composite structure for reinforcing the depth of proximal penetration of a concrete pole, characterized in that it comprises an insert 233 provided so that the support rod 231 is inserted so that the upper structure 200 can be supported on the ground.
The method of claim 1,
The wedge member 300 is
A pair of seating bodies 310, each of which is made of two powders and coupled to the upper structure 200 so as to have a ring shape, but having a flange 311 seated at the upper end of the upper structure 200, and each of the seating bodies 310 It is formed protruding downward on the lower surface, and is fitted between the inner surface of the upper structure 200 and the outer surface of the electric pole (E/P) to fix the electric pole (E/P) inserted into the upper structure 200 in a wedge method A length-extended composite structure for reinforcing the depth of the concrete pole, characterized in that it comprises a wedge body (320-1,320-2).
The method of claim 6,
The flange 311 has an outer diameter equal to or greater than the outer diameter of the upper structure 200, and the flange 311 has a first through hole 241 of the upper structure 200 by a fastening means P. A length-extended composite structure for reinforcing the depth of proximal penetration of a concrete pole, characterized in that a first coupling hole 313 for fixed coupling with the formed fastening piece 240 is formed.
The method of claim 6,
The wedge bodies 320-1 and 320-2 are formed to protrude to have an arc shape in the longitudinal direction of the seating body 310, or have an arc shape adjacent to each other in the longitudinal direction of the seating body 310 A length-extended composite structure for reinforcing the depth of a concrete pole, characterized in that a plurality of protrusions are formed to have a.
The method of claim 6,
The wedge body (320-2) is opposed to the second through hole (250) formed in the upper structure (200), but the upper structure (200) and the seating body (310) are fixedly coupled by a fastening means (P) A length-extended composite structure for reinforcing the depth of the concrete pole, characterized in that the second coupling hole 321 is formed for the purpose.
1) forming the wedge member 300;
2) forming a columnar upper structure 200 into which the electric pole (E/P) can be inserted through the opened upper part;
3) forming a reinforcing bar structure 110 made of a combination of reinforcing bars;
4) providing the reinforced structure 110 and the upper structure 200 together inside the lower mold 23 from which the upper mold 21 is removed;
5) Injecting concrete into the lower mold 23;
6) After combining the upper mold 21 with the lower mold 23 to maintain airtightness inside the lower mold 23, the reinforced structure 110 is rotated to cure the concrete input by the centrifugal force. Molding the lower structure 100 as a frame to be fixedly coupled to the upper structure 200; And
7) removing the upper mold (21) from the lower mold (23) and demolding the lower structure (100) to which the upper structure (200) is joined; A method for manufacturing a length-extended composite structure for use.
The method of claim 10,
In the step 4), the upper structure 200 is provided inside the lower mold 23 so that a plurality of attachment protrusions 220 protruding downwardly from the lower portion thereof can be inserted into the reinforced structure 110. The length for reinforcing the depth of the protrusion of concrete, characterized in that the upper structure 200 and the lower structure 100 can be fixedly coupled to each other through the attachment protrusion 220 when the concrete is cured in step 6). Method of manufacturing an extended composite structure.

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