KR20200039285A - Apparatus and method for reinforcing basic of steel tower - Google Patents

Abstract

The present invention relates to an apparatus and a method for reinforcing a steel tower base. The apparatus includes: an anchor (100) inserted into a drilled hole (7) drilled in an existing installed steel tower foundation (1) to be inserted into an extension hole (9) drilled in the bedrock below the foundation (1) so as to communicate with the drilled hole (7), and having a thread formed on the outer periphery thereof; a drawing force reinforcing material (200) assembled to the anchor (100) and extending the outer diameter to be fixed to the outer wall of the bedrock; and an anchor plate reinforcing material (400) assembled to the anchor (100) and applying a drawing force and a compressive force to the anchor (100). The apparatus and the method enable steel tower reinforcing construction without the need for establishment of an access road and excavation of the steel tower base, can be easily applied to a site, and is applied to the site to ensure structural stability.

Description

Steel tower foundation reinforcement and reinforcement method {APPARATUS AND METHOD FOR REINFORCING BASIC OF STEEL TOWER}

The present invention relates to a pylon foundation reinforcement device and a reinforcement method, and more particularly, to a pylon foundation reinforcement device and a reinforcement method for a foundation reinforcement construction of a distribution tower.

Since the distribution pylon is accompanied by a foundation structure on the ground, the structural strength decreases when the basic floating displacement occurs due to the constructability of the foundation buried underground, the earth's crust changes due to heavy rain, the terrain change, and the formation of a large-scale building nearby. Or severe deformation.

Therefore, if the construction status of the pylon is checked, and if the ground floating displacement occurs due to soft ground or load conditions and terrain changes, the pylon reverse T-type foundation is reinforced to reinforce the foundation.

As shown in Fig. 1, the pylon reverse T-type foundation reinforcing work is a pulverization-reinforced displacement method (a) for reinforcing the drawing force of a pylon foundation, a horizontal-reinforced displacement method (b) for reinforcing horizontal force, and a composite reinforcement method The construction method (c) can be applied, and the reinforcement method is determined in consideration of loads transmitted from the top of the pylon, that is, compressive force, pull force, horizontal force, and the like.

The basic reinforcement work of the pylon station T-type opens the access road through logging, cutting, and filling, and after the excavation equipment (backhoe, etc.) and material transport vehicle enter the pylon foundation work site, excavate the pylon site, and then pylon station T Foundation (1) Rebar reinforcement, formwork assembly, concrete pouring (3), and reinforce the pylon foundation in the order of backfilling.

Then, when the reinforcement of the foundation of the pylon is completed, site preparation around the foundation, restoration of damaged land, and drainage work are performed. In other words, the mountainous region used as an access road is restored to its original location through road restoration, sowing of seed seeds, tree planting, etc., and after reorganization of the farmland, the state of restoration is confirmed in the presence of the owner, etc. Local governments) must obtain the completion inspection for the restoration of mountainous and farmland.

By the way, most distribution towers are built on the island's power supply facilities, which are located on the coastal mountainous area and the island (island) coastal mountainous area, and many of them are located in the maritime national park. It has a geographical characteristic.

In addition, the recent increase in the construction of pensions by opening coastal roads in promising coastal or island areas due to the revitalization of the tourism leisure industry has led to a surge in demand for demolition of distribution towers from site owners and nearby residents of pylons located in coastal or mountainous areas. to be.

In this situation, it is difficult to obtain the land owner's consent to use the land of the land owner located within the passageway or to establish an access road for entering the excavation equipment for the foundation reinforcement work of the distribution tower, so it is not possible to submit the land use approval form required for temporary use of mountain and farmland to the local government. Therefore, it is not possible to construct a license as well as construct it. In addition, even if the land owner agrees to use it, the consultation period takes months to years, so the construction is suspended for a long time due to delays in licensing.

Patent Document 1: Registered Patent No. 0662883 (Registered on December 21, 2006)

An object of the present invention is to provide a pylon foundation reinforcing device and a reinforcement method capable of reinforcing a pylon without opening a ramp and excavating a pylon foundation, facilitating field application, and securing structural stability.

According to a feature of the present invention for achieving the above object, the present invention is inserted into a perforated hole perforated in an existing installed pylon foundation to extend through the perforated rock in the lower part of the foundation to communicate with the perforated hole. Includes an anchor plate reinforcement material assembled to the anchor and a pull-out reinforcement material that is inserted into the anchor and fixed to the outer wall of the rock bed by extending the outer diameter and being assembled to the anchor with a thread formed on the outer diameter. .

The pull-out reinforcing material is a stiffener reinforced to be fixed to the outer wall of the rock ground and the stiffener coupler supporting the outer diameter of the stiffener to expand and the stiffener height adjustment nut and rotation to fix the position of the stiffener. And a circular plate for transmitting the force transmitted from the pull-out reinforcement nut to the drawing-reinforcement nut and the pull-out force reinforcement nut for transferring the force to the pull-out reinforcement.

The pull-out reinforcement material is assembled to the anchor from the top to the bottom in the order of the pull-out reinforcement height adjustment nut, pull-out reinforcement coupler, pull-out reinforcement, round plate and pull-out reinforcement nut.

Further comprising a pulling force reinforcing nut tightening material for tightening the drawing reinforcing material by rotating the drawing force reinforcing nut.

The stiffener is a cylindrical shape with one side open in the longitudinal direction, and the stiffener coupler has a conical shape in which the outer diameter gradually increases, and when the pulsation reinforcement nut is rotated, the inner diameter of the stiffener is inserted into the outer diameter of the stiffener coupler. By being tightened, the outer diameter of the drawn reinforcement is expanded.

The circular plate and the stiffener coupler are formed with through holes and passages through which the cement milk passes.

It is assembled to the anchor and includes a horizontal force reinforcing material positioned between the base and the rock foundation to reinforce the horizontal force.

The horizontal force reinforcing material includes a horizontal force reinforcing material having a predetermined length and an upper nut and a lower nut which are positioned above and below the horizontal force reinforcing material to fix the position of the horizontal force reinforcing material.

The anchor plate reinforcing material is located between the compression force reinforcing nut and the plate supporting the compressive force and the pulling force located on the upper surface of the base and the compressive force reinforcing nut which is located on the upper portion of the perforation hole to transmit compressive force to the anchor. A height-adjusting washer that integrates the compression force reinforcing nut and the plate, an upper washer located on the upper portion of the plate, and an upper portion of the anchor and tightening the anchor and the plate to generate a pulling force and pulling force to transmit the force to the anchor And a washer for horizontally maintaining the human nut and the drawing force of the human nut horizontally and a flat washer positioned between the drawing force of the human nut and the leveling washer.

The anchor plate reinforcing material is assembled from the top to the bottom in the order of the compression force reinforcing nut, height adjusting washer, plate, upper washer, leveling washer, flat washer and pull force human nut to the anchor.

Drilling a perforation hole in an existing installed pylon foundation and drilling an extension hole to the rocky base of the lower part of the foundation so as to communicate with the perforation hole, and assembling a pull force reinforcing material on the lower side of the anchor, and drawing power reinforcing material Inserting the anchor to the extension hole to be located in the extension hole and extending the outer diameter of the pull-out reinforcing material to fix it on the outer wall of the rock and cement milk in the extension hole and the hole. And incorporating the anchor and the rock by injecting, assembling the anchor plate reinforcement material to the anchor and applying a pulling force and a compressive force to the anchor.

In the pull-out reinforcement material, a pull-out reinforcement height adjustment nut, a draw-out reinforcement coupler, a draw-out reinforcement, a circular plate, and a pull-out reinforcement nut are assembled in order from the top to the anchor.

Rotating the pulling force reinforcing nut with a reinforcing nut tightening material, the inner diameter of the drawing reinforcing material is tightened to the outer diameter of the circular plate so that the outer diameter of the drawing reinforcing material is extended.

Before the cement milk is injected into the extension hole and the perforation hole, a horizontal force reinforcing material for reinforcing the horizontal force to the anchor is assembled so that the horizontal force reinforcing material is positioned between the base and the rock.

The horizontal force reinforcing material is assembled to the anchor in the order of the lower nut, the horizontal force reinforcing material, and the upper nut, and the lower nut and the upper nut fix the position of the horizontal force reinforcing material.

The anchor plate reinforcing material is assembled from the top to the bottom in the order of the compression force reinforcing nut, height adjusting washer, plate, upper washer, horizontal washer, flat washer and pull force human nut to the anchor.

The present invention inserts an anchor after drilling an existing installed pylon foundation base and a rock foundation supporting it, and combines pull-out reinforcement material, horizontal force reinforcement material, anchor plate reinforcement material, etc. to the anchor and cements the foundation base, anchor, and rock foundation. Structural stability is secured by integrating with milk to reinforce the insufficient drawing force and insufficient horizontal force.

As described above, the present invention is capable of reinforcing the drawing force and horizontal force of the existing pylon foundation in a place where the work space is narrow and heavy equipment such as heavy tension equipment is difficult to enter, so it is easy to construct, shortens the construction period, and has a low construction cost. And, compared with the conventional micro pile reinforcing method, it is not an open type (use of large heavy equipment), so the occupied area is minimized and it has an eco-friendly effect.

1 is a view showing a conventional steel tower reverse T-type foundation reinforcement construction method.
Figure 2 is a cross-sectional view showing the appearance of reinforcing the reverse T foundation of the pylon with a pylon foundation reinforcement according to the present invention.
Figure 3 is a front view showing a steel tower foundation reinforcement according to the present invention.
Figure 4 is a view showing the pull-out reinforcement material in the steel tower foundation reinforcement according to the present invention.
Figure 5 is a view showing the horizontal force reinforcement material in a pylon foundation reinforcement according to the present invention.
Figure 6 is a view showing the anchor plate reinforcement material in the steel tower foundation reinforcement according to the present invention.
Figure 7 is a cross-sectional view of the anchor plate reinforcement material in the pylon foundation reinforcement device according to the present invention.
8 is a view showing an example of applying only the pull-out reinforcement material and the anchor plate reinforcement material in the steel tower foundation reinforcement device according to the present invention.
9 is a view showing an example in which only the horizontal force reinforcement material and the anchor plate reinforcement material are applied to the pylon foundation reinforcement device according to the present invention.
Figure 10 is a schematic view showing a test method of a pylon foundation reinforcement method using a pylon foundation reinforcement device according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the pylon foundation reinforcement device 10 of the present invention includes an anchor 100, a pull force reinforcement material 200, a horizontal force reinforcement material 300, and an anchor plate reinforcement material 400.

The steel tower foundation reinforcement device 10 of the present invention is for reinforcing the reverse T-type foundation of the existing distribution tower. The inverted T-type foundation is called a pylon foundation or foundation.

The pylon foundation reinforcing device 10 punctures the pylon foundation 1 and the rock foundation supporting it, inserts the anchor 100, installs a retraction force reinforcing material 200 on the rock foundation, and the foundation 1 After installing and fixing the horizontal force reinforcing material 300 between and the rock foundation, the cement base 500 is injected to integrate the foundation 1, the anchor 100, and the rock foundation to secure structural stability.

The anchor 100 is made of a steel bar and a thread is formed on the outer diameter. The threads formed on the outer diameter of the anchor 100 are for assembling the pulling force reinforcing material 200, the horizontal force reinforcing material 300 and the anchor plate reinforcing material 400 to the anchor 100.

The anchor 100 is inserted into a perforated hole 7 perforated to an existing installed pylon foundation 1, to an extension hole 9 perforated in the rocky ground under the base 1 to communicate with the perforated hole 7 Insert it. The perforation hole 7 is formed at a position that does not interfere with the main circumference of the pylon 5 installed on the foundation 1. The perforation hole 7 and the extension hole 9 are formed perpendicular to the base 1. When considering the upper specification of the foundation (1), the diameter of the perforated hole can be formed in the range of 75 ~ 88mm. And the diameter of the anchor may range from 26 to 32 mm.

Pull-out reinforcement material 200 is assembled to the lower portion of the anchor (100). The drawing force reinforcing material 200 is extended to the outer diameter to be fixed to the outer wall of the rock foundation to reinforce the drawing force. The horizontal force reinforcing material 300 is assembled to the lower or middle part of the anchor 100 and is positioned between the base 1 and the rock foundation to reinforce the horizontal force. The anchor plate reinforcing material 400 is assembled on the top of the anchor 100 and applies a pulling force and a compressive force to the anchor 100.

The drawing force reinforcing material 200 and the horizontal force reinforcing material 300 may be selectively assembled to the anchor 100.

3 and 4, the drawing force reinforcing material 200 is a drawing reinforcing material height adjustment nut 210, a drawing reinforcing material coupler 220, a drawing reinforcing material 230, a circular plate 240 and a drawing power reinforcing nut ( 250), which are sequentially assembled from the top to the bottom of the anchor 100.

The height of the drawing reinforcing material 210 is fixed to the position of the drawing reinforcing material 230. The height of the stiffener height adjustment nut 210 is first assembled to the anchor 100 so that the stiffener 230 is located on a good rock ground to fix the position of the stiffener 230. The stiffener height adjusting nut 210 is formed in a long hexagon nut shape, and a thread corresponding to an outer diameter thread of the anchor 100 is formed on the inner diameter.

The drawing reinforcement coupler 220 supports the drawing reinforcement 230 so that the outer diameter of the drawing reinforcement 230 can be expanded. The stiffener coupler 220 has a conical shape in which the outer diameter gradually increases. The outer diameter of the stiffener 230 is tightened while the inner diameter of the stiffener 230 is tightened to the outer diameter of the stiffener coupler 220. The stiffener coupler 220 is formed with a plurality of passages 221 through which the cement milk 500 passes in the longitudinal direction around the outer diameter. The passage 221 is formed in a concave through-hole shape.

The outer diameter of the drawn reinforcement coupler 220 is narrow compared to the inner diameter of the drawn reinforcement 230, and the wider part is relatively larger than the drawn diameter of the drawn reinforcement 230, and the outer diameter of the drawn reinforcement 230 is drawn. From being tightened to the inner diameter of the coupler 220, the outer diameter of the drawing reinforcement 230 can be extended.

When the pull-out reinforcement 230 rotates the pull-out reinforcement nut 250, the outer diameter is expanded and fixed to the outer wall of the rock. The drawing reinforcement 230 has a cylindrical shape with one side opened in the longitudinal direction. The outer diameter of the stiffener 230 may be expanded by opening the opening 231 of the stiffener 230 by inserting and tightening the inner diameter of the stiffener 230 to the outer diameter of the stiffener coupler 220.

The circular plate 240 transmits the force transmitted from the pull-out reinforcement nut 250 to the pull-out reinforcement 230. The circular plate 240 is formed with a plurality of through holes 241 through which the cement milk 500 passes.

The pull force reinforcing nut 250 extends the outer diameter of the draw reinforcement 230 by transmitting force to the draw reinforcement 230 by rotation. Specifically, when the drawing force reinforcing nut 250 is rotated, the inner diameter of the drawing reinforcing material 230 is inserted into the outer diameter of the drawing reinforcing material coupler 220 and tightened, thereby expanding the outer diameter of the drawing reinforcing material 230 and drawing the reinforcing material 230 It is fixed to the outer wall of the rock bed.

Pulling force reinforcement nut 250 is formed on both sides of the tightening groove 251 on the upper surface. The two side tightening grooves 251 are coupled to both side tightening projections 261 of the pull force reinforcement nut fastener 260 for rotating the pull force reinforcement nut 250.

The pull-out reinforcement nut fastener 260 is for tightening the pull-out reinforcement 230 by rotating the pull-out reinforcement nut 250. The pull-out reinforcement nut fastener 260 is formed in a cylindrical shape opened up and down, and a thread 263 for coupling with a long pipe is formed on one outer diameter, and both fastening projections 261 are projected downward on the opposite outer diameter.

In the state where the long pipe 270 is screwed to the thread 263 of the pull-out reinforcement nut fastener 260, it is coupled to the anchor 100 located in the perforated hole 7, and both sides tighten the pull-out reinforcement nut fastener 260 The protruding force reinforcement nut 250 can be rotated by rotating the long pipe 270 by combining the projections 261 with the fastening grooves 251 on both sides of the pulling force reinforcement nut 250. The pulling force reinforcing nut fastener 260 may rotate the pulling force reinforcing nut 250 to expand the outer diameter of the drawing reinforcing material 230 and then remove the state coupled to the anchor 100. That is, the pull-out reinforcement nut fastener 260 is used as a tool for rotating the pull-out reinforcement nut 250 in combination with the long pipe 270.

3 and 5, the horizontal force reinforcing material 300 includes a lower nut 310, a horizontal force reinforcing material 320 and an upper nut 330, the lower nut 310 to the anchor 100, It is combined in the order of the horizontal force reinforcement material 320 and the upper nut 330.

The upper nut 330 and the lower nut 310 are positioned above and below the horizontal force reinforcing material 320 and serve to fix the position of the horizontal force reinforcing material 320. The upper nut 330 and the lower nut 310 fix the position of the horizontal force reinforcing material 320 so that the horizontal force reinforcing material 320 is located between the base 1 and the arm ground.

The horizontal force reinforcing material 320 is formed in a cylindrical shape having a predetermined length. The horizontal force reinforcing material 320 is assembled to the anchor 100 to reinforce the horizontal force. For example, the horizontal force reinforcing material 320 may be made of steel having a length of 2 m, a thickness of 10.5 mm, and a diameter of 60 mm. In addition, the upper nut 330 and the lower nut 310 adjust the insertion position of the horizontal force reinforcing material 320 so that the horizontal force reinforcing material 320 is located at the upper 1 m and the lower 1 m with the base 1 and the arm ground as the boundary.

Tool grooves 311 and 331 are formed in the upper nut 330 and the lower nut 310. The tool grooves 311 and 331 may be grooves in which a tool for rotating the upper nut 330 and the lower nut 310 is combined to assemble the upper nut 330 and the lower nut 310 to the anchor. Although not shown, the tool grooves 311 and 331 may be combined with projections of a nut fastening material that is combined with a long pipe. Alternatively, the upper nut 330 and the lower nut 310 may be rotated by a tool holding the outer diameters of the upper nut 330 and the lower nut 310.

3 and 6, the anchor plate reinforcing material 400 is a compression force reinforcing nut 410, a height adjustment washer 420, a plate 430, an upper washer 440, a horizontal washer 450 , A flat washer 460 and a pull-out human nut 470. The anchor plate reinforcing material 400 is a compression force reinforcing nut 410 to the anchor 100, a washer 420 for height adjustment, a plate 430, an upper washer 440, a washer 450 for horizontal adjustment, a flat washer 460 And the pulling force of the human nut 470 is assembled from top to bottom.

The compression force reinforcing nut 410 is located at the top of the perforation hole 7 to transmit the compression force to the anchor 100. The coupling protrusion 411 protrudes on the upper surface of the compression force reinforcing nut 410. The engaging projection 411 is coupled to the fitting groove 421 of the washer 420 for height adjustment.

The washer for height adjustment 420 is located between the compression force reinforcement nut 410 and the plate 430 to integrate the compression force reinforcement nut 410 and the plate 430. When the plate 430 is rotated, the compression force reinforcing nut 410 located in the perforation hole 7 of the base 1 rotates at the same time to adjust the height up and down, and the plate 430 and the compression force reinforcing nut 410 are integrated. Order.

The washer 420 for height adjustment is formed with a portion of the outer diameter inclined upward, a fitting groove 421 is formed at the lower inner diameter, and a fitting protrusion 423 is formed at the upper inner diameter. The engaging projection 411 of the compression force reinforcement nut 410 is coupled to the fitting groove 421 of the washer 420 for height adjustment, and the fitting projection 423 of the washer 420 for height adjustment is the engaging groove 433 of the plate 430. ).

The engaging projection 411 of the compression force reinforcement nut 410 is coupled to the fitting groove 421 of the washer 420 for height adjustment, and the fitting projection 423 of the washer 420 for height adjustment is the engaging groove of the plate 430 ( 433), the compression force reinforcing nut 410 is integrated with the plate 430, and when the plate 430 is rotated, the compression force reinforcing nut 410 also rotates at the same time.

Plate 430 is located on the upper surface of the base (1) to support the compression force and the pulling force.

The plate 430 has a cylindrical shape, and insertion grooves 431 and 432 are formed at upper and lower portions. The washer 420 for height adjustment is located in the lower insertion groove 431 of the plate 430, and the upper washer 440 is positioned in the upper insertion groove 432 of the plate 430. The lower insertion groove 431 and the upper insertion groove 432 are formed in a shape corresponding to the outer diameters of the washer 420 for height adjustment and the upper washer 440. A coupling groove 433 recessed in the lower insertion groove 431 of the plate 430 is further formed. The fitting protrusion 423 of the washer 420 for height adjustment is coupled to the coupling groove 433 formed in the lower insertion groove 431 of the plate 430.

The upper washer 440 is located on the top of the plate 430. The upper washer 440 is formed with a portion of the outer diameter inclined downward to correspond to the upper insertion groove 432 of the plate 430. The upper washer 440 is for increasing the tightening force between the plate 430 and the washer 450 for horizontal adjustment.

The washer 450 for horizontal adjustment is for maintaining the pull force human nut 470 horizontally. The washer 450 for horizontal adjustment of the inclination occurring on the upper surface of the foundation 1 is installed to maintain the horizontality of the human nut 470. The washer 450 for horizontal adjustment is formed in a shape including left and right inclination.

The flat washer 460 is positioned between the pull-out human nut 470 and the horizontal washer 450. The flat washer 460 increases the friction between the drawing force human nut 470 and the leveling washer 450 so that the force to tighten the drawing force human nut 470 is transmitted to the plate 430.

Pulling force The human nut 470 is assembled to the top of the anchor 100 and tightens the anchor 100 and the plate 430 to generate a pulling force and transmits power to the anchor 100. Pulling force The human nut 470 is formed with a thread corresponding to an outer diameter thread of the anchor 100 at an inner diameter and tightened to the anchor 100.

As shown in FIG. 7, a plate 430 is positioned on the upper surface of the base 1 and a compression force reinforcing nut 410 is disposed at an upper portion of the perforation hole 7, and the compression force reinforcing nut 410 is for height adjustment. It is integrated with the plate 430 by the washer 420. That is, the engaging projection 411 of the compression force reinforcing nut 410 is coupled to the fitting groove 421 of the washer 420 for height adjustment, and a part of the washer 420 for height adjustment is inserted into the bottom of the plate 430 431 ), The insertion protrusion 423 of the washer 420 for height adjustment is coupled to the coupling groove 433 of the plate 430 so that the compressive force reinforcement nut 410 and the plate 430 are integrated.

Accordingly, when the pulling force human nut 470 is tightened, the pulling force by the plate 430 is transmitted to the anchor 100 while the plate 430 is pulled upward, and the cement milk 500 and the compressive force reinforcing nut 410 The compression force by is transmitted to the anchor 100.

8 and 9, the pull force reinforcing material 200 and the horizontal force reinforcing material 300 may be selectively assembled to the anchor 100.

As illustrated in FIG. 8, the drawing force reinforcing material 200 is assembled to the lower portion of the anchor 100, and the anchor plate reinforcing material 400 is assembled to the upper portion of the anchor 100 to draw and compressive force to the anchor 100. Can be added.

Alternatively, as illustrated in FIG. 9, the horizontal force reinforcing material 300 is assembled to the lower or middle part of the anchor 100, and the anchor plate reinforcing material 400 is assembled to the anchor 100 to the anchor 100. ) Can be applied withdrawal force and compression force.

Alternatively, the anchor 100 may be assembled with at least one selected from the drawing force reinforcing material 200 and the horizontal force reinforcing material 300.

On the other hand, the method of reinforcing the foundation of the pylon using the pylon foundation reinforcing device 10, as shown in FIG. 2, a) drilling a perforation hole 7 in the existing installed pylon foundation 1 and communicating with the perforation hole 7 Puncture the extension hole (9) to the base of the base (1) to the bottom of the base, and b) assemble the pull-out reinforcement material (200) on the lower side of the anchor (100) and pull-out reinforcement (200) the extension hole ( 9) inserting the anchor 100 to the extension hole 9 through the perforation hole 7 to be positioned in c) and c) expanding the outer diameter of the pull-out reinforcement material 200 and fixing it to the outer wall of the rock foundation d) After the cement milk 500 is injected into the extension hole 9 and the drilling hole 7 to integrate the anchor 100 and the rock foundation, the anchor plate reinforcement material 400 is assembled to the anchor 100 to anchor the anchor 100 ) Applying a pull force and a compressive force.

In step a), the foundation 1 and the drilling of the rocky ground can be performed using a portable boring device. The portable boring device is easy for the operator to grip and carry.

In step b), as illustrated in FIG. 4, the pull-out reinforcement material 200 includes a pull-out reinforcement height adjustment nut 210, a pull-out reinforcement coupler 220, a draw-out reinforcement 230, and a circular plate (at the anchor 100). 240) and the pulling force reinforcing nut (250). The anchor 100 having the pull-out reinforcing material 200 assembled is inserted into the extension hole 9 through the perforation hole 7.

In step c), the drawing force reinforcing nut tightening material 260 is used to rotate the drawing force reinforcing nut 250 located in the extension hole 9 of the arm ground to transmit power to the drawing reinforcing material 230. When the pulling force reinforcing nut 250 is rotated with the pulling force reinforcing nut tightening material 260, the inner diameter of the drawing reinforcing material 230 is inserted into the outer diameter of the drawing reinforcing material coupler 220 and tightened, thereby opening the opening 231 of the drawing reinforcing material 230. The outer diameter expands as it opens. That is, through the expansion of the outer diameter of the drawing reinforcement 230, the drawing reinforcement 230 is securely fixed to the outer wall of the rock.

In step d), cement milk (grout) is injected into the perforation hole 7 and the extension hole 9 to cure.

At this time, a through hole 241 is formed in the circular plate 240 and a passage 221 is formed in the outer diameter of the pull-out reinforcement coupler 220, so that the cement milk 500 extends through the through hole 241 and the passage 221 It can be smoothly injected down to the hole (9).

Before the cement milk 500 is injected into the extension hole 9 and the drilling hole 7, the horizontal force reinforcing material 300 is assembled to the anchor 100 by reinforcing the horizontal force reinforcing material 300 to reinforce the horizontal force. It can be located between 1) and rock.

5, the horizontal force reinforcing material 300 is assembled to the anchor 100 in the order of the lower nut 310, the horizontal force reinforcing material 320 and the upper nut 330. The lower nut 310 and the upper nut 330 fix the position of the horizontal force reinforcing material 320 so as to be located between the base 1 and the rock.

After curing the cement milk 500, the anchor plate reinforcement material 400 is assembled to the anchor 100.

As shown in Figure 6, the anchor plate reinforcing material 400 is a compression force reinforcing nut 410, a height adjustment washer 420, a plate 430, an upper washer 440, a horizontal washer ( 450), a flat washer 460 and a pull-out human nut 470 are assembled in this order.

The compression force reinforcement nut 410 is located on the upper portion of the perforation hole 7 and the plate 430 is supported on the upper surface of the base 1, and the compression force reinforcement nut 410 and the plate 430 are washers 420 for height adjustment. Is fixed integrally by the plate 430 when rotating the compression force reinforcing nut 410 is also rotated integrally. In this state, by pulling the human nut 470, it is possible to apply a pulling force and a compressive force to the anchor 100.

Hereinafter, the operation of the present invention will be described.

In the present invention, after drilling the existing installed pylon foundation (1) and the rock foundation supporting it, the anchor (100) assembled with the pulling force reinforcing material (200) is inserted into the drilling hole (7), and the pulling force reinforcing material (200) ) Is fixed to the outer wall of the rock.

In addition, the horizontal force reinforcing material 300 is assembled to the anchor 100, and the horizontal force reinforcing material 300 is fixed to be positioned between the base 1 and the arm ground.

After this, the cement milk 500 is injected into the perforated hole 7 and cured, and then the anchor plate reinforcement material 400 is assembled on the upper part of the anchor 100 to apply the pulling force and compression force to the anchor 100. The installed pylon foundation 1 can be reinforced.

Since the drilling equipment is small, there is no need for a conventional large-sized heavy equipment, so it is not necessary to open it to enter, and does not require permission from the land owner and the competent authority. In addition, since only the cement milk 500 injected into the perforated hole 7 and the extended hole 9 is cured, the curing period is 15 days to 20 days, and the construction period is compared to 90 days to 180 days when curing with conventional concrete pouring. It can be drastically reduced.

In addition, it does not require large-sized heavy equipment and can carry anchors and various reinforcing materials by manpower, so construction costs are low. In addition, compared to the conventional micro pile reinforcement method, it is not an open type (use of large heavy equipment), so the occupying area is minimized and it is eco-friendly.

Hereinafter, the pylon foundation reinforcement method using the above-described pylon foundation reinforcement device will be described through the results of experiments to confirm whether the traction and horizontal force reinforcement is possible.

FIG. 10 is a schematic view showing a test method of a method for reinforcing a pylon foundation using a pylon foundation reinforcing device according to the present invention.

Test site: 115 Bongsan-ri, Mongtan-myeon, Muan-gun, Jeonnam

Test drilling: 6 holes [3 holes in diameter 75mm, 3 holes in diameter 88mm]

Number of holes: 24m [75mm-4m × 3 holes in diameter, 88mm-4m × 3 holes in diameter]

Perforated ground: Yeonam ground

Test period: 10 days

[Unit: kN] division Test Items Anchor reinforcement
Material composition Test number Drilling depth
H = 30.m H = 4.0m Perforation φ75mm
Anchor φ26.5mm Pullout force Cement milk [Picture # 1] 550kN Pullout force Cement milk + pull-out reinforcement material [Picture # 2] 569kN Pulling force, horizontal force Cement milk + horizontal force reinforcement material [Picture # 3] 560 kN (person)
75kN (Wed) Perforation φ88mm
Anchor φ32.0mm Pullout force Cement milk [Picture # 1] 805kN Pullout force Cement milk + pull-out reinforcement material [Picture # 2] 811 kN Pulling force, horizontal force Cement milk + horizontal force reinforcement material [Picture # 3] 802 kN (person)
80kN (Wed)

(Person): Pulling force, (Number): Horizontal force

From the test results in Table 1, it was confirmed that the pull-out force and the horizontal force were reinforced in the distribution pylon actually in operation, thereby confirming the ease of application in the field.

The above-described reinforcement method of the pylon tower does not require opening of a driveway and excavation of a site, so there is no damage to the natural environment caused by logging, cutting soil, and soil treatment and does not work with construction equipment. It is a public method.

The above-described pylon foundation reinforcing device is an exposed type in which the anchor plate reinforcement material is exposed on the upper surface of the foundation, but is installed on the foundation of the existing pylon, but the anchor plate reinforcement material is embedded in the perforated hole formed in the foundation and not exposed to the outside. Can also be installed in a buried type.

The present invention has been described with the best embodiments in the drawings and specifications. Here, although specific terms are used, they are used for the purpose of describing the present invention only, and are not used to limit the scope of the present invention described in the meaning limitation or the claims. Therefore, the present invention will be understood by those of ordinary skill in the art that various modifications and other equivalent embodiments are possible. Therefore, the true technical scope of the present invention should be defined by the technical spirit of the appended claims.

1: Foundation 3: Steel tower (main shareholder)
7: Drilling hole 9: Extension hole
10: steel tower foundation reinforcement 100: anchor
200: pull-out reinforcement material 210: pull-out reinforcement height adjustment nut
220: drawn reinforcement coupler 221: passage
230: drawn reinforcement 231; Opening
240; Round plate 241: through
250: pull-out reinforcement nut 251: tightening groove
260: pull-out reinforcement nut tightening material 261: tightening projection
263: thread 270: long pipe
300: horizontal force reinforcement material 310: lower nut
320: horizontal force stiffener 330: upper nut
400: anchor plate reinforcement material 410: compression force reinforcement nut
411: engaging projection 420: height adjustment washer
421: fitting groove `423: fitting protrusion
430; Plate 431: Insertion groove
433: Coupling groove 440: Upper washer
450: Leveling washer 460: Flat washer
470: drawing force human nut 500: cement milk

Claims (18)

An anchor having a thread formed at its outer diameter by inserting it into a perforated hole drilled in an existing installed pylon foundation and inserting an extended hole drilled in a rocky base of the lower base so as to communicate with the perforated hole;
A pull-out reinforcement material assembled to the anchor and extending an outer diameter to be fixed to the outer wall of the rock foundation; And
An anchor plate reinforcement material which is assembled to the anchor and applies a pulling force and a compressive force to the anchor;
Pylon foundation reinforcement device comprising a. The method according to claim 1,
The pull-out reinforcement material
A pull-out reinforcement having an outer diameter expanded and fixed to the outer wall of the rock foundation;
A stiffener coupler supporting the outer diameter of the stiffener to expand;
A height adjusting nut for fixing the position of the drawing reinforcement;
A pull force reinforcing nut that transmits a force to the draw reinforcement by rotation; And
A circular plate that transmits the force transmitted from the drawing force reinforcing nut to the drawing reinforcing material;
Pylon foundation reinforcement device comprising a. The method according to claim 2,
The pull-out reinforcement material
A steel tower foundation reinforcement device, characterized in that the anchor reinforcement height adjustment nut, the draw reinforcement coupler, the draw reinforcement, the circular plate and the pull force reinforcement nut are assembled from top to bottom in order. The method according to claim 3,
A pylon foundation reinforcement device further comprising a pulling force reinforcing nut tightening material for tightening the drawing reinforcing material by rotating the drawing force reinforcing nut. The method according to claim 4,
The stiffener has a cylindrical shape with one side open in the longitudinal direction, and the stiffener coupler has a conical shape in which the outer diameter is gradually increased. Steel tower foundation reinforcement device, characterized in that the outer diameter of the draw reinforcement is expanded by being tightened. The method according to claim 4,
The circular plate and the pull-out reinforcement coupler is a pylon foundation reinforcing device, characterized in that a through hole and a passage through which the cement milk passes. The method according to claim 1,
It is assembled to the anchor and is located between the base and the rock foundation reinforcement pylon foundation characterized in that it comprises a horizontal force reinforcing material for reinforcing the horizontal force. The method according to claim 7,
The horizontal force reinforcement material
A horizontal force reinforcing material having a predetermined length; And
An upper nut and a lower nut positioned at the upper and lower portions of the horizontal force reinforcing material to fix the position of the horizontal force reinforcing material;
Pylon foundation reinforcement device comprising a. The method according to claim 1,
The anchor plate reinforcement material
A compression force reinforcing nut positioned at an upper portion of the perforation hole to transmit compression force to the anchor;
A plate positioned on an upper surface of the foundation to support compression and pull-out forces;
A height adjusting washer positioned between the compression force reinforcing nut and the plate to integrate the compression force reinforcing nut and the plate;
An upper washer located above the plate;
A pull-out human nut that is assembled to the top of the anchor and tightens the anchor and the plate to generate a pull force and transmits the force to the anchor;
A washer for horizontal adjustment to maintain the pull force human nut horizontally; And
A flat washer positioned between the pull-out human nut and the washer for horizontal adjustment;
Pylon foundation reinforcement device comprising a. The method according to claim 9,
The anchor plate reinforcement material
A steel tower foundation reinforcing device, characterized in that the anchor is assembled from top to bottom in the order of a reinforcing nut for compression force, a washer for height adjustment, a plate, an upper washer, a washer for horizontal adjustment, a flat washer and a pulling force human nut. An anchor having a thread formed at its outer diameter by inserting it into a perforated hole drilled in an existing installed pylon foundation and inserting an extended hole drilled in a rocky base of the lower base so as to communicate with the perforated hole;
A horizontal force reinforcing material assembled to the anchor and positioned between the base and the rock foundation to reinforce a horizontal force; And
An anchor plate reinforcement material which is assembled to the anchor and applies a pulling force and a compressive force to the anchor;
Pylon foundation reinforcement device comprising a. The method according to claim 11,
The horizontal force reinforcement material
A horizontal force reinforcing material having a predetermined length; And
An upper nut and a lower nut positioned at the upper and lower portions of the horizontal force reinforcing material to fix the position of the horizontal force reinforcing material;
Pylon foundation reinforcement device comprising a. Drilling a perforation hole in an existing installed pylon foundation and perforating an extension hole to the rocky ground under the foundation to communicate with the perforation hole;
Assembling a pull force reinforcing material on the lower side of the anchor and inserting the anchor through the perforation hole to the extension hole such that the pull force reinforcing material is located in the extension hole;
Expanding the outer diameter of the pull-out reinforcement material and fixing it to the outer wall of the rock foundation; And
Cementing the anchor hole and the rock by injecting cement milk into the extension hole and the perforation hole, and assembling the anchor plate reinforcement material to the anchor to apply a pulling force and a compressive force to the anchor;
Steel tower foundation reinforcement method comprising a. The method according to claim 13,
The pull-out reinforcement material
Steel anchor foundation reinforcement method, characterized in that the stiffener height adjustment nut, the stiffener coupler, the stiffener, the circular plate and the stiffener reinforcement nut are assembled in order from top to bottom. The method according to claim 14,
A method of reinforcing a pylon foundation, characterized in that by rotating the drawing force reinforcing nut with a reinforcing nut fastening material, the inner diameter of the drawing reinforcing material is tightened to the outer diameter of the circular plate to expand the outer diameter of the drawing reinforcing material. The method according to claim 13,
Before injecting cement milk into the extension hole and the perforation hole,
A method of reinforcing a pylon foundation, comprising assembling a horizontal force reinforcing material for reinforcing the horizontal force to the anchor so that the horizontal force reinforcing material is positioned between the base and the rock. The method according to claim 16,
The horizontal force reinforcement material
The anchor is assembled in the order of the lower nut, the horizontal force reinforcement and the upper nut,
A method of reinforcing a pylon foundation, wherein the lower nut and the upper nut fix the position of the horizontal force reinforcing material. The method according to claim 13,
The anchor plate reinforcement material
A method of reinforcing a steel tower foundation, characterized in that the anchor is assembled from top to bottom in the order of a reinforcing nut for compression force, a washer for height adjustment, a plate, an upper washer, a washer for horizontal adjustment, a flat washer, and a pulling force human nut.

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