KR102111153B1 - Retaining Wall Panel Structure using PC Strand - Google Patents

Abstract

Retaining wall panel structure using a PC steel wire, the permanent anchor body installed on the target ground of the cut and cut surface; A steel wire reinforcement having a plurality of steel wires integrally connected to the permanent anchor body; A steel wire distributor installed on the target ground so that the permanent anchor body is firmly installed; A plurality of retaining wall panel members stacked at a predetermined distance from the target ground; Fixing members are installed at the ends of one or two or more steel wires penetrating the retaining wall panel members so that the retaining wires are connected in a horizontal or vertical direction so that the retaining wall panel members are firmly installed. A plurality of PC stranded wires to be connected can be connected with a single punch, and the retaining wall panel member and the PC stranded wire can be installed at the same time, and the working time and cost associated with the construction of the retaining wall panel member can be reduced and act on the retaining wall panel member. It is possible to disperse the stress, and the effect of reducing the thickness of the retaining wall panel member is obtained.

Description

Retaining Wall Panel Structure using PC Strand}

The present invention relates to a retaining wall panel structure using a PC stranded wire, and more particularly, to a retaining wall panel structure using a PC stranded wire that stabilizes the ground of a cut surface or fill surface by stably fixing the retaining wall panel to a plurality of PC stranded wires. will be.

In general, when constructing retaining walls such as roads, railroad slopes, slopes in park areas, river embankments, and coastal roads, concrete retaining walls have been mainly constructed by pouring and curing concrete in the field.

The construction of the concrete retaining wall by pouring the site is going through the processes of excavating the ground → pouring the foundation concrete → pouring the structure concrete → backfilling construction → repairing the surrounding pavement.

This conventional retaining wall construction method has a number of problems as follows, since all the work for forming the retaining wall structure is performed directly in the field.

In order to pour concrete at the site, the formwork must be installed and dismantled, and a long period of curing of concrete is required.

That is, since it takes a long period of time to form a concrete structure, the construction period is prolonged, and accordingly, there is a problem in that the construction cost is high and economic efficiency is deteriorated.

On the other hand, in general, the retaining wall using an anchor forms a concrete panel having a predetermined thickness along the slope of the sloping ground, and after placing and curing the concrete between the panel and the sloping ground, the anchor is tensioned and installed at a predetermined interval. It is fixed to the concrete panel.

The cured concrete and the panel on the front thereof are in close contact with the slope of the slope to prevent landslides and the like on the slope.

However, the retaining wall using such an anchor had to be thickly manufactured to withstand the earth pressure, and there was a problem in transportation and construction, such as separately equipped with a pressure plate.

In addition, it is possible to beautify the appearance beautifully by adding color to the panel, but it has a structural defect that can easily collapse the panel wall due to the earth pressure of the target ground due to rainwater in case of rain because the binding force between the panel wall and the target ground is poor. When the retaining wall is rescued with the shotcrete layer as the target ground, the target ground can be stabilized to some extent, but has aesthetic defects that are poor in appearance.

On the other hand, the reinforcement method is applied to prevent the excavation surface from collapsing in the excavation necessary for the construction of civil-related buildings such as trenches, earth retaining structures, tunnels, tunnels, etc. The earth anchor and soil nail methods are mainly used during the construction of the soil.

Soil-nailing method is a method of reinforcing the excavation slopes only with nail and acupressure plate (bearing plate and shotcrete or concrete facing) as a reinforcing material as well as step-by-step excavation for excavation of an inclined surface or a basement of a building to establish a mudguard facility. As it uses relatively small equipment, it is possible to perform excavation work with low noise and low vibration.

In addition, the anchor method is used as an anchor force corresponding to external forces such as earth pressure, wind pressure, water pressure, seismic force, etc. generated in construction work or is used for stress reinforcement of structures, which are mainly slope protection, retaining walls, anchors on excavation surfaces And a positive pressure base anchor.

Currently, it is used in high towers or bridge foundations where overload is applied due to the development of anchor design and construction technology, and is applied in all fields such as plants, dams, and tunnels.

This anchoring method is to stabilize the structure by inserting a sheath and a PS reinforcing material into the perforations drilled by a rigger, and then injecting a grout material to make the anchor body. After the anchor body is sufficiently cured, the anchoring part of the anchor is tensioned and anchored in the anchor head.

In these anchoring methods, steel bars, reinforcing bars, etc., having concave or concave portions formed on the surface at continuous or regular intervals, are used as reinforcing materials.

In addition, the reinforcing material inserted in the perforation should be installed spaced apart at a predetermined distance from the excavation surface so that the grout material can be tightly filled between the periphery and the perforation and the reinforcing material is completely covered by the grout.

Conventionally, for this purpose, a separate spacer was installed at a predetermined distance to the steel, which has a very cumbersome disadvantage.

On the other hand, when a retaining wall panel structure is installed on a slope such as a fill surface or a cut surface, fixing the retaining wall panel in addition to the ground reinforcement is to fix the retaining wall panel with individual reinforcement materials such as reinforcing bar or steel bar, so that when installing a plurality of retaining wall panels Perforation as many as the number of panels is required, resulting in a problem of perforation cost and grout cost.

In addition, there was a problem in that reinforcing rebars, etc., had to be performed separately in order to withstand the thickness and concentrated stress of the panel due to the concentration of stress when fixing the PC retaining panel and the reinforcement.

For example, Patent Document 1 below discloses a 'retaining wall construction method using a ground reinforcement device for a retaining wall'.

The method of constructing a retaining wall using a ground reinforcement device for a retaining wall according to Patent Literature 1 below excavates a perforated hole on a slope, an inside is formed with a hollow along the longitudinal direction, and a side is formed with a plurality of injection holes communicating the hollow with the outside. Inserting the tube into the perforation hole, so that the top of the injection tube protrudes from the slope, injecting the grouting solution into the injection tube by pressurized grouting, so that the grouting solution fills the inside of the injection tube and penetrates the ground, and the cap for connection Using a step of connecting one end of the strand and the top of the injection pipe, installing the other end of the strand so as to penetrate the through-hole of the panel, filling the space between the panel and the slope with a filling material and the other side of the strand Panel by tensioning the end and fixing the other end to the panel using a fixing portion while maintaining the tension And a step of applying a compressive force to the filling material.

Patent Document 2 below discloses a 'retaining wall structure and a construction method thereof'.

The retaining wall structure according to Patent Document 2 and a construction method thereof penetrate through the first pressure plate, the first pressure plate having a through hole through which the upper portion of the reinforcing material is formed, and a reinforcing material whose upper portion protrudes inside the target ground. A connecting member composed of a steel wire or a steel bar that is fitted with the other side of the fastening part fastened with the upper part of the reinforcement, and a fastening part fastened with the upper part of the reinforcing material, a through-hole is formed to penetrate the other side of the connecting material, and a prefabricated panel that is fitted with each other , A base portion supporting the lower part of the prefabricated panel, a second pressure plate having a through hole formed to penetrate through the upper portion of the connecting material passing through the prefabricated panel and settled in the prefabricated panel, and a fixing portion fastened with an upper portion of the connecting material passing through the second pressure plate Includes wealth.

Republic of Korea Patent Registration No. 10-0967897 Republic of Korea Patent Registration No. 10-1027800

However, the retaining wall structure and the retaining wall construction method according to the prior art have the inconvenience of fixing the steel bars or steel wires corresponding to each panel one-to-one to the ground, and it is difficult to secure a space for installing multiple steel bars or steel wires on the ground. In addition, as a number of steel bars or steel wires were installed, the construction period was prolonged and the construction cost was increased.

An object of the present invention is to solve the problems as described above, to provide a retaining wall panel structure using a PC steel wire that can firmly install a plurality of retaining wall panels by installing a plurality of PC steel wires in one perforated hole.

In order to achieve the above object, a retaining wall panel structure using a PC stranded wire according to the present invention includes a permanent anchor body installed on a target ground of a castle and cut surface; A steel wire reinforcement having a plurality of steel wires integrally connected to the permanent anchor body; A steel wire distributor installed on the target ground so that the permanent anchor body is firmly installed; A plurality of retaining wall panel members stacked at a predetermined distance from the target ground; It characterized in that it comprises; a fixed member which is respectively installed at the front end of the one or two or more strands penetrating the retaining wall panel member so that the retaining wall panel members are connected in a horizontal direction or a vertical direction so that the retaining wall panel member is firmly installed.

In the steel wire distributor, a plurality of through holes are formed so that the plurality of steel wires are penetrated one by one.

The steel wire reinforcing material is made of a free length reinforcing material made of a certain depth and a fixed length reinforcing material that is integrally extended from the free length reinforcing material and buried in the perforation of a slope, and is coated with grease to prevent corrosion of the free length reinforcing material, and is coated with corrosion. Prevention tube; It characterized in that it comprises; a grout material injection pipe disposed in parallel with the plurality of strands so that the injection of the grout material and a predetermined adhesive force is exerted.

The fixing member is a pressure plate provided with a hole formed to penetrate the steel wire and is in close contact with one surface of the retaining wall panel member; An anchor head installed on one surface of the acupressure plate in close contact with one surface of the acupressure plate so that the steel wire is not moved; A wedge coupled to the inside of the anchor head so that the strand is fixed to the anchor head; It characterized in that it comprises a; protective cap installed on the outer surface of the anchor head.

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As described above, according to the retaining wall panel structure and the ground reinforcement method using the PC stranded wire according to the present invention, a plurality of PC stranded wires connected to a plurality of retaining wall panel members can be connected by one punch, and the retaining wall panel member and the PC stranded wire It is possible to construct at the same time, it is possible to reduce the working time and cost according to the construction of the retaining wall panel member, it is possible to disperse the stress acting on the retaining wall panel member, the effect of reducing the thickness of the retaining wall panel member is obtained .

According to the retaining wall panel structure and the ground reinforcement method using a PC steel wire according to the present invention, corrosion is not generated by blocking contact with rainwater or ground water by a corrosion preventing pipe surrounding the steel wire, and also to prevent collapse of the retaining wall panel member It is possible to obtain an effect that the target ground and the retaining wall panel member can be firmly installed by connecting the target ground and the retaining wall panel member with a strong tensile steel wire.

1 is a cross-sectional view showing a retaining wall panel structure using a PC stranded wire according to a preferred embodiment of the present invention,
Figure 2 is a cross-sectional view showing a permanent anchor body of the retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention,
Figure 3 is a cross-sectional view showing a steel wire reinforcement of the retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention,
4 is a view showing a twisted wire distributor of a retaining wall panel structure using a PC stranded wire according to a preferred embodiment of the present invention;
Figure 5 is a cross-sectional view showing a fixing member of the retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention,
6 is a view showing a pressure plate of a retaining wall panel structure using a PC stranded wire according to a preferred embodiment of the present invention,
7 is a view showing a protective cap of a retaining wall panel structure using a PC stranded wire according to a preferred embodiment of the present invention;
8 is a process diagram showing a ground reinforcement method using a PC stranded wire according to a preferred embodiment of the present invention,
9 is a plan view showing a state in which the steel wire reinforcement is horizontally installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention,
10 is a plan view showing a state in which the steel wire reinforcement is horizontally installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention,
11 is a side cross-sectional view showing a state in which the steel wire reinforcement is vertically installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention.

Hereinafter, a retaining wall panel structure and a ground reinforcement method using a PC stranded wire according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a retaining wall panel structure using a PC stranded wire according to a preferred embodiment of the present invention.

Retaining wall panel structures using PC stranded wires according to a preferred embodiment of the present invention are permanently anchored body 10 installed on the target ground of the castle and cut surface, and a plurality of strands 23 are integrally connected to the permanent anchoring body 10 The steel wire reinforcing material 20, the steel wire distributor 30 installed on the target ground so that the permanent anchor body 10 is firmly installed, the retaining wall panel member 40 stacked at a predetermined distance from the target ground, the The steel wires 23 are fixedly installed at one or two ends of the steel wires 23 through the retaining wall panel member 40 so that the retaining wall panel members 40 are firmly installed by being connected in a horizontal or vertical direction. It includes a member (50).

A retaining wall panel structure using a PC stranded wire according to an embodiment of the present invention and its ground reinforcement method include a permanent anchor body 10 embedded in a target ground, and a stranded wire provided with a plurality of strands 23 in the permanent anchor body 10 By installing the reinforcing material 20 on the retaining wall panel member 40 spaced from the target ground, the target ground is reinforced and the retaining wall panel member 40 is firmly installed by the retaining wall panel member 40 Keep it intact.

In addition, a plurality of retaining wall panel members 40 can be fixed to one steel wire reinforcement 20 by installing a steel wire reinforcement 20 made of a plurality of steel wires 23 in one hole formed by drilling.

As shown in Figure 1, the retaining wall panel structure using the PC stranded wire of the present invention is a permanent anchor body 10 that is installed to be buried in the target ground (1), the permanent anchor body 10 a plurality of strands (23) This integrally provided steel wire reinforcing material 20, a steel wire divider 30 for distributing the plurality of steel wires 23 into a plurality of strands, and a retaining wall panel member 40 spaced apart by a predetermined distance from the target ground 1 ) And the fixing member 50 for fixing the strand 23 passing through the retaining wall panel member 40.

Figure 2 is a cross-sectional view showing a permanent anchor body of the retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention, Figure 3 is a steel wire reinforcement of the retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention It is a sectional view.

As shown in Figure 2, the permanent anchor body 10 is to be buried in the perforated hole 2 of the target ground (1), the permanent anchor body 10 is fixed to the tip of a number of strands (23) Fixed wedge 11, a first cover 12 fastened to one surface of the fixed wedge 11, a second cover 13 coupled to the outer surfaces of the fixed wedge 11 and the first cover 12, and It consists of a third cover (14) fastened to the second cover (13).

A plurality of strands 23 are coupled to the fixed wedge 11, and a plurality of holes are formed in the fixed wedge 11 according to the number of strands of the strands 23 to be joined.

That is, when fixing the three strands of the strands 23 to the fixed wedge 11, three holes are formed to penetrate the three strands 23, and when fixing the four strands of the strands 23, four Four holes are formed to penetrate the steel wire 23.

A first cover 12 is fastened to one outer surface of the fixed wedge 11, and a second cover 13 is coupled to cover the outside of the stranded wire 23 together with the fixed wedge 11. On the outer surface of the second cover 13, teeth are formed at regular intervals so as to be firmly fixed to the grout material injected into the perforation hole 2, while being fastened to one outer surface of the second cover 12. The third cover 14 is coupled to cover the first cover 12.

Since the permanent anchor body 10 is cut in the longitudinal direction, the tip of the second cover 13 is expanded by the tension of the steel wire 23.

On the other hand, as shown in Figure 1, the permanent anchor body 10 is installed on one side of the ELP conduit 15 that wraps around the tip of the strand reinforcement 20.

The ELP conduit 15 is made of a flexible corrugated pipe so that the strand reinforcement 20 is more easily inserted inside the perforation hole 2.

The steel wire reinforcement 20 is to connect the target ground (1) and the retaining wall panel member 40, the steel wire reinforcement 20 is the anchorage reinforcement (21) and the anchorage reinforcement installed buried in the target ground (1) It consists of a free field reinforcement 22 which extends integrally from (21) and is installed on the retaining wall panel member (40).

As shown in Figure 3, the steel wire reinforcement 20 is made of a plurality of PC steel wires 23, PC steel wires (23, Prestressing Strand) refers to a steel wire, not a steel bar among steels for artificially stressing the PC It should be understood as.

The PC stranded wire (23) is a PC 재 steel wire with several twists of PC steel wire. In addition to the 2, 3 and 7 stranded strands, thick diameter stranded wire may be used.

The strand reinforcement 20 extends integrally from the free field stiffener 22 and the free field stiffener 22 made of a certain depth from the surface of the target ground 1 to the perforated hole 2 of the target ground 1 Corrosion prevention pipe (25), which is made of buried anchorage reinforcement (21) and is filled with grease to prevent corrosion of anchorage reinforcement (21) together with free anchoring (22) or free anchoring (22) And a grout material injection pipe disposed in parallel with the corrosion prevention pipe 25 inside the perforation hole 2 so that the grouting material is injected into the anchorage reinforcement 21 and a predetermined adhesion is exhibited.

As shown in FIG. 3 (a), the anchorage reinforcement 21 of the strand reinforcement 20 is provided with four strands of PC strands 23 around the center of the center, as in FIG. 3 (b), The free length reinforcement 22 of the steel wire reinforcement 20 is provided with four strands of PC steel wire 23 so as to be located on the upper portion of the center rod.

This is to ensure that the plurality of strands 23 are stably maintained in a state in which they are not twisted together.

In addition, at one end of the anchorage reinforcing member 21 of the steel wire 23, the fixing protrusion 24 is integrally formed to be fixed to the permanent anchor body 10, and the reinforcing steel reinforcement 22 or the reinforcing steel reinforcement 22 and Together, the anchorage reinforcing material 21 is coated with a corrosion preventing pipe 25 filled with grease so that corrosion does not occur.

4 is a view showing a steel wire distributor of a retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention.

As shown in Figure 4, the twisted wire distributor 30 is installed to be in close contact with the target ground (1), by distributing the twisted wire 23 made of several strands of the strand reinforcement 20 in the horizontal or vertical direction give.

The steel wire distributor 30 is fitted to the surface side of the perforation hole 2 of the target ground 1 to be fixed so that the hollow distribution base body 31 and the several strands of the stranded wire 23 penetrate through each of the distribution base bodies ( A plurality of through holes 32 are formed in 31).

When the strand reinforcing material 20 is three strands, the through-holes 32 of the strand divider 30 are made of three, and when the strand reinforcing material 20 is four strands, the through hole 32 of the strand divider 30 Of course, it is made of 4 silver

5 is a cross-sectional view showing a fixing member of a retaining wall panel structure using a PC stranded wire according to a preferred embodiment of the present invention.

As shown in FIG. 5, the fixing member 50 is installed at the tip of the free field reinforcement 22 to fix the strand reinforcement 20 and the retaining wall panel member 40.

The fixing member 50 has a hole 52 is formed so that the steel wire penetrates, the pressure plate 51 is provided in close contact with one surface of the retaining wall panel member 40, the pressure plate 51 is in close contact with one surface of the steel wire ( 23) an anchor head 54 installed on one surface of the pressure plate 51 so as not to move, and a wedge coupled to the inside of the anchor head 54 so that the strand 23 is fixed to the anchor head 54 ( 56), a protective cap 57 is installed on the outer surface of the anchor head (54).

6 is a view showing a pressure plate of a retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention, and FIG. 7 shows a protective cap of a retaining wall panel structure using a PC steel wire according to a preferred embodiment of the present invention. It is a drawing.

5 to 7, the acupressure plate 51 is formed of a flat plate in close contact with one surface of the retaining wall panel member 40, and the acupressure plate 51 has a hole 52 through which a steel wire 23 penetrates. Is formed.

In addition, a plurality of fastening holes 53 are formed in the pressure plate 51 so as to fix the protective cap 57.

The anchor head 54 is in close contact with the acupressure plate 51 to securely fix the steel wire 23, and a fitting hole 55 through which the wedge 56 can be fitted is formed in the center of the anchor head 54.

The fitting hole 55 is formed to be inclined so that the wedge 55 is coupled, and the wedge 55 is coupled to the fitting hole 55 in a forced fit while being coupled to the tip of the strand 23.

A protective cap 57 is installed on the pressure plate 51 so that the anchor head 54 is not exposed to the outside, and the protection cap 57 has a flange 58 corresponding to the fastening hole 53 of the pressure plate 51. Is formed.

9 to 11, the ground reinforcement method using a PC stranded wire according to a preferred embodiment of the present invention (a) perforated the target ground (1) at a predetermined angle to the inclined hole (2) ) Forming (S10), (b) inserting the permanent anchor body 10 into the perforated hole 2 (S20), (c) the perforated hole 2 into which the permanent anchor body 10 is inserted The step of injecting the grout material to the position of the anchorage reinforcement 21 through the grout material injection pipe arranged in parallel with the corrosion prevention pipe 25 (S30), (d) the target ground after filling and curing the grout material (1) Steps to be fixed to each of the plurality of retaining wall panel members 40 using a fixing member 50 using a plurality of steel wires 23 drawn out through the steel wire distributor 30 fixed to the surface-side perforation hole 2 of the ( S40).

The perforation hole 2 perforates the target ground 1 of the fill surface or cut surface at an angle (S10). The perforated hole 2 is formed with a diameter larger than the diameter of the permanent anchor body 10.

A permanent anchor body 10 is inserted into the perforation hole 2 (S20). At this time, one end of the steel wire reinforcement 20 is fixed to the permanent anchor body 10 by a fixing wedge 11, and the anchorage reinforcement 21 has a length extending to the slope of the target ground 1.

The free length reinforcement 22 extending integrally with the anchorage reinforcement 21 extends to a length reaching the retaining wall panel member 40.

In the state in which the permanent anchor body 10 is inserted into the perforation hole 2, a twisted wire distributor 30 is installed on the slope of the target ground 1. At this time, each of the steel wires 23 is installed in the through hole 32 of the steel wire distributor 30.

The grout material is injected into the drill hole 2 through the grout material injection pipe (not shown) installed in the steel wire reinforcement 20 (S30).

In addition, with the injection of the grout material, the retaining wall panel member 40 is stacked at a position spaced apart from the target ground 1 by a predetermined distance.

The retaining wall panel member 40 is provided with a steel wire 23 which is a free length reinforcement 22 penetrated, and a corrosion prevention pipe 25 for preventing corrosion is provided on the outer surface of the steel wire 23 of the free length reinforcement 22 Install it.

When curing of the grout material is completed, the end of the free-field reinforcement 22 is tensioned to securely fix the permanent anchor body 10 embedded in the target ground 1 so that it does not deviate.

A fixing member 50 is installed on one surface of the retaining wall panel member 40, the anchor head 54 is fitted to the tip of the strand 23, and then the wedge 56 is inserted into the fitting hole 55 of the anchor head 54. Combines

The wedge 56 is tensioned to the steel wire 23 as it fits into the fitting hole 55. Accordingly, the steel wire reinforcement 20 is firmly installed on the target ground 1, as well as the retaining wall panel member 40. It fits tightly.

In the perforated hole 2 of the target ground 1, one permanent anchor body 10 is installed, as well as a steel wire reinforcement 20 is installed between the target ground 1 and the retaining wall panel member 40.

At this time, since the steel wire reinforcement 20 is made of three or four strands on one permanent anchor body 10, it is possible to fix a plurality of retaining wall panel members 40 on one permanent anchor body 10.

That is, one end of the steel wire reinforcement 20 is installed on the permanent anchor body 10, and the other end is installed on the retaining wall panel member 40 (S40).

9 is a plan view showing a state in which the steel wire reinforcement is horizontally installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention.

As illustrated in FIG. 9, a perforated hole 2 is formed in the target ground 1, a permanent anchor body 10 is embedded in the perforated hole 2, and the retaining wall panel member 40 has a target ground ( It is installed spaced a predetermined distance from 1).

The steel wire reinforcement 20 fixed to the permanent anchor body 10 is made of four steel wires 23, and each retaining wall panel member 40 is provided with one steel wire 23, respectively.

That is, four retaining wall panel members 40 are fixed to one permanent anchor body 10, and the four stranded steel wires 23 of the steel wire reinforcement 20 are disposed in a horizontal direction and installed on the retaining wall panel member 40. do.

10 is a plan view showing a state in which the steel wire reinforcement is horizontally installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention.

As shown in Fig. 10, one permanent anchor body 10 is provided with four strands of strands 23, and each retaining wall panel member 40 is provided with two strands of strands 23.

Thus, two retaining wall panel members 40 are installed in one permanent anchor body 10, and two strands of strands 23 are installed in one retaining wall panel member 40 in the horizontal direction.

11 is a side cross-sectional view showing a state in which a steel wire reinforcement is vertically installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention.

As shown in Figure 11, one permanent anchor body 10 is provided with four strands of strands 23, and each retaining wall panel member 40 is provided with one strand of wires 23, respectively. 23 is installed in the vertical direction.

12 is a rear perspective view showing a state in which a steel wire reinforcement is installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention, and FIG. 13 is a ground reinforcement using a PC steel wire according to a preferred embodiment of the present invention It is a three-dimensional front view showing the state in which the steel wire reinforcement is installed by the construction method.

14 is a view showing a state in which a steel wire reinforcement is installed by a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention, Figure 15 is a ground reinforcement method using a PC steel wire according to a preferred embodiment of the present invention It is a front view showing the state in which the steel wire reinforcement is installed.

12 and 13, the ground reinforcement method according to an embodiment of the present invention comprises a plurality of retaining walls in a steel wire reinforcement 20 made of a plurality of free length reinforcements 22 in one settling reinforcement 21 The panel member 40 is installed.

That is, one anchorage reinforcement 21 is buried in the target ground (1), the freefield reinforcement 22 is connected from the tip of the perforation hole (2) to the retaining wall panel member 40, a number of freefield reinforcement 22 are each connected to the retaining wall panel member 40 one by one.

At this time, the three free field reinforcements 22 are connected to the three retaining wall panel members 40 in a one-to-one correspondence, and the free field reinforcement 22 is arranged in a substantially triangular shape, as shown in FIG. 14.

Accordingly, three retaining wall panel members 40 are connected to one anchorage reinforcement 21, and a plurality of retaining wall panel members 40 are connected to one anchorage reinforcement 21, thereby retaining wall panel members 40. Not only can be firmly fixed, it is not necessary to install a number of anchorage reinforcement (21).

In addition, as shown in Fig. 15 (a), the steel wire reinforcement 20 can be installed to connect the retaining wall panel member 40 and the free length reinforcement 22 in a one-to-one connection, as shown in Fig. 15 (b) , Two retaining wall panel members 40 may be connected to and installed on one strand of the steel wire reinforcement 20.

Also, as shown in FIG. 15 (c), three retaining wall panel members 40 may be connected and installed in one strand reinforcement 20, and as shown in FIG. 15 (d), one strand reinforcement ( 20) four retaining wall panel members 40 may be connected and installed.

As described above, a plurality of retaining wall panel members 40 can be connected and installed in one strand reinforcement 20, thereby reducing the number of installations of the strand reinforcement 20, and a plurality of retaining wall panel members in one strand reinforcement 20 As the 40) is connected and installed, the retaining wall panel member 40 can be firmly installed.

Although the invention made by the present inventors has been described in detail according to the above-described embodiments, the present invention is not limited to the above-described embodiments and can be variously changed within a range not departing from the gist thereof.

10: permanent anchor body 11: fixed wedge
12: first cover 13: second cover
14: third cover
20: Steel wire reinforcement 21: Settlement reinforcement
22: free field reinforcement 23: steel wire
24: fixing protrusion 25: corrosion prevention tube
30: Steel wire distributor 31: Distribution basic body
32: through hole 40: retaining wall panel member
50: fixing member 51: acupressure plate
52: hole 53: fastening hole
54: anchor head 55: fitting hole
56: wedge 57: protective cap

Claims (6)

delete delete delete Permanent anchor body 10 is buried in the perforated hole (2) formed in the target ground (1) of the cut and cut surface;
A steel wire reinforcing material 20 having a plurality of strands 23 integrally connected to the permanent anchor body 10;
A plurality of through holes 32 are formed so that the plurality of strands 23 penetrate through the distribution base body 31 which is installed to fit into the surface side perforation hole 2 of the target ground 1, and each through hole 32 ) While the plurality of strands (23) are fitted and fixed while the permanent anchor body (10) and the strand reinforcing material (20) is rigidly installed to the steel wire distributor (30);
A plurality of retaining wall panel members 40 spaced apart by a predetermined distance from the target ground 1;
The steel wires 23 are connected to each other in the horizontal direction or the vertical direction so that the retaining wall panel member 40 is firmly installed, one or two or more steel wires passing through the retaining wall panel member 40 are fixed. Including the member 50,
The permanent anchor body 10,
A fixing wedge 11 forming a plurality of holes to fix the ends of the plurality of strands 23;
A first cover 12 fastened to cover the fixed projection 24 of the tip of the strand 23 passing through the fixed wedge 11 while being fastened to one outer surface of the fixed wedge 11;
The outer surface has a second cover 13 that covers the outside of the steel wire 23 with the fixing wedge 11 by forming teeth at regular intervals so as to be firmly fixed to the grout material injected into the perforation hole 2 and the fixed wedge 11 and
While being fastened to one side outer surface of the second cover 13 is made as a third cover 14 that covers the first cover 12,
The steel wire reinforcement 20,
A free field reinforcement 22 installed at a predetermined depth in the perforated hole 2 of the target ground 1 from the retaining wall panel member 40;
A settlement reinforcing material (21) extending integrally from the free field reinforcing material (22) to be buried in a hole (2) of the target ground (1);
A corrosion prevention pipe 25 coated with grease to prevent corrosion of the anchorage reinforcement 21 together with the freefield reinforcement 22 or the freefield reinforcement 22;
It is made of a grout material injection pipe arranged in parallel with the corrosion prevention pipe 25 inside the perforation hole 2 so that the grouting material is injected into the anchorage reinforcement 21 and a predetermined adhesion is exhibited.
The fixing member 50,
A hole 52 is formed so that the steel wire 23 penetrates therethrough, and the plate-shaped pressure plate 51 is provided in close contact with one surface of the retaining wall panel member 40;
An anchor head 54 installed on one surface of the pressure plate 51 so as not to move the steel wire 23 in close contact with one surface of the pressure plate 51;
A wedge 56 coupled to the inside of the anchor head 54 so that the strand 23 is fixed to the anchor head 54;
Retaining wall panel structure using a PC stranded wire, characterized in that it comprises a protective cap (57) installed on the outer surface of the anchor head (54).
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