KR101595702B1 - Soil retaining structure using plate pile with reinforcing bridge and construction method thereof - Google Patents

Abstract

The present invention can prevent the ground subsidence due to groundwater leakage and water level change when the earthquake groundwork is constructed for the construction of underground structures and prevent the surrounding soil or groundwater from entering the construction site, The present invention relates to a retaining structure using a steel plate provided with a reinforcing bridge capable of expanding the buried distance of an H-shaped steel material and a method of constructing the same.
To achieve the above object, according to the present invention, there is provided an earth retaining structure using a steel plate provided with a reinforcing bridge, comprising: a plurality of H-shaped steels formed of webs and flanges formed on both sides of the web, And a steel plate which is inserted into the annular wall and forms a wall of the retaining wall, wherein the steel plate comprises a plate portion; A first bent portion bent at both ends of the plate portion and formed in parallel with the web; A second bent portion extending and bent from the first bent portion and formed in parallel with the plate portion; And a plurality of reinforcing bridges provided at predetermined intervals between the second bent portions, wherein the reinforcing bridge has one end connected to the second bent portion and the other end leading to the plate portion; And a reinforcement plate disposed between the other end of the bridge and the other end of the bridge facing the bridge and attached to the plate portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retention structure using a steel plate having a reinforcing bridge,

The present invention relates to a retaining structure using a steel plate having a reinforcing bridge and a method of constructing the same. More particularly, the present invention relates to a retaining structure using a steel plate having a reinforcing bridge, The present invention relates to a retaining structure using a steel plate provided with a reinforcing bridge capable of preventing the occurrence of soil or ground water from flowing into a construction site and expanding the buried distance of the H- will be.

Generally, in order to construct an underground structure such as a basement of a building or a subway, the underground construction is carried out. In order to prevent the earth wall from collapsing due to the earth pressure in the construction work, a barrier wall is installed, It is also accompanied by manual work to prevent the ground water from leaking into the construction area.

FIG. 1 is a perspective view of an earth retaining structure using an H-shaped steel material and a turntable according to the related art. In the earth retaining work using the retaining structure, an H-shaped steel material 10 is disposed at regular intervals, A soil plate 30 made of wood is interposed between the soil retaining structure 30 and the earth retaining structure 30, so that soil is stabilized by filling the soil behind the retaining structure having the space formed therein.

However, in the above-mentioned method, since the ground behind the retaining structure is not stabilized, the ground settlement and the ground collapse tend to occur, and a barrier wall is formed by using a plurality of soil plates 30 made of wood, The resistance against the earth pressure is reduced, and the disadvantage that the construction period due to the construction is increased as the plurality of dust plates 30 are laminated and constructed.

As a conventional technique for solving the above problems, a method of constructing a retaining structure is disclosed in Japanese Patent Application No. 10-0846229 (registered on July 20, 2008).

FIG. 2 is an exploded perspective view of the H-shaped steel material and the metal-made steel sheet according to the related art. The guide rail 20 is fastened to the web of the H-shaped steel material 10, And the metal sheet 30 is inserted into the space 21, as shown in FIG.

In the conventional earthworking process, the H-shaped steel material is first buried in the ground, and then the metal-made steel plate is vibrated by the vibrator between the H-shaped steel materials installed at regular intervals, .

The earth retaining structure thus formed has an advantage of being able to effectively prevent the infiltration of the earth soil into the worksite and to perform the order effectively by supporting the earth pressure in the earthquake-proof construction work for constructing the underground structure.

However, since the metal plate is buried in the ground and the earth pressure is increased in proportion to the depth at the time of the earthquake, the steel plate at the bottom should have a very thick shape to withstand the greatest earth pressure, There is a problem that the resistance is increased due to the thick shape of the metal-made steel sheet in the process of making it difficult to construct.

In addition, when the cross section of the metal sheet is small, a horizontal earth pressure on the back surface is increased in proportion to the depth of the steel sheet inserted into the ground, thereby causing a structural problem such as a folding phenomenon in which the middle portion bulges out There is a problem that the subsequent construction process such as detachment of the metal-made steel sheet from the H-shaped steel sheet is disadvantageous.

In addition, when the metal-made steel sheet is formed to have a comparatively large thickness in order to resist the increasing horizontal earth pressure in proportion to the depth of the tearing, there is a problem that the weight of the metal- Since a constant strength is not required and a strong rigidity is required as it goes down, there is a problem in that resources are wasted when a material having a uniform member cross-section (rigidity) is made of a thick material. In addition, since the H-shaped steel material can not be applied at a wide interval exceeding the allowable deformation amount of the steel sheet, the interval of the H-shaped steel material is narrowed, and precision construction is difficult due to the dense construction of the H- It is difficult to expect the order effect as the number of discontinuity surfaces increases because of the increase in the connection portion between the H-shaped steel and the metal sheet.

(Patent 0001) KR 10-0846229 B1 (2008. 07. 08)

The present invention has been made in order to solve the above problems of the prior art, and it is an object of the present invention to provide a h- The present invention provides a retaining structure using a steel plate provided with a reinforcing bridge that can be installed with a large burial distance of the retaining structure, and a method of constructing the retaining structure.

It is another object of the present invention to provide a retaining structure using a steel plate having a reinforcing bridge capable of minimizing the resistance due to the burial of the steel sheet and facilitating the underground burial,

In addition, a problem to be solved by the present invention is to provide a reinforcement bridge capable of increasing the installation efficiency of the H-shaped steel material, minimizing the discontinuity surface, increasing the order effect, And a method of constructing the retaining structure using the steel plate.

It is another object of the present invention to provide a retaining structure using a steel plate having a reinforcing bridge which is provided with a reinforcing brace between the reinforcing bridges to maximize the resistance to earth pressure and a construction method thereof .

To achieve the above object, according to the present invention, there is provided a retaining structure using a steel plate provided with a reinforcing bridge, comprising: a plurality of H-shaped steels composed of a web and flanges formed on both sides of the web, And a steel plate which is inserted into the annular wall and forms a wall of the retaining wall, wherein the steel plate comprises a plate portion; A first bent portion bent at both ends of the plate portion and formed in parallel with the web; A second bent portion extending and bent from the first bent portion and formed in parallel with the plate portion; And a plurality of reinforcing bridges provided at predetermined intervals between the second bent portions, wherein the reinforcing bridge has one end connected to the second bent portion and the other end leading to the plate portion; And a reinforcement plate disposed between the other end of the bridge and the other end of the bridge facing the bridge and attached to the plate portion.

Further, a reinforcing brace provided between the reinforcing bridges may be further provided, the reinforcing brace may be installed on the plate portion in an interview, And a regulating jack installed between both ends of the reinforcing bar and the second bending part to fix and support the installed reinforcing bars.

Here, the adjustment jack may include a support piece that is in surface contact with the reinforcing support member; A bolt formed in the direction of the second bent portion from the support piece; And a nut which is threadedly engaged with the bolt portion and brought into contact with the second bent portion at one end thereof by being loosened.

Further, the bridge is formed to be inclined from the second bent portion toward the central portion side of the plate portion.

The soil retention construction process using the steel plate having the above-described structure includes a site clearance step (S10) for surveying a place for a terrestrial engineering work and for confirming a ground underground, planarizing the ground, A guide beam installing step (S20) of installing a guide beam in which a plurality of insertion ports into which H-shaped steel material can be inserted are formed on the flattened ground through the site clearance step; An H-shaped steel material embedding step (S30) of arranging and embedding the H-shaped steel material into the insertion hole of the guide beam installed through the guide beam installing step; A guide beam removing step (S40) of removing the guide beam installed through the guide beam installing step from the ground; A steel sheet embedding step (S50) of embedding a steel plate provided with a reinforcing bridge between the H-shaped steel materials buried through the H-shaped steel material embedding step; A displacement measurement step (S60) of installing a wale band and a support to fix the H-shaped steel members to each other and confirming whether or not there is a construction defect; And a soil-erosion step (S70) of digging the soil after confirming whether or not there is a construction defect through the displacement measuring step.

According to the present invention, since a plurality of reinforcing bridges are provided along the vertical direction of the steel sheet, the rigidity of the steel sheet is improved, so that even if the thickness of the steel sheet is made thin, it is possible to prevent the occurrence of an overburden.

In addition, since the earth retaining method using the steel plate is a very important process in which the H-shaped steel material is buried in the ground, when the thickness is made the same as that of the conventional steel sheet, the width of the steel sheet can be greatly increased. The number of embedding of the H-shaped steel material is reduced, so that the construction period can be shortened and precision construction can be performed.

In addition, since the reinforcing bridge is installed integrally with the steel plate, the steel plate is installed and the rigidity against the earth pressure is generated by merely embedding the steel plate in the ground.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a retaining structure using a H-shaped steel material and a turntable according to the prior art; FIG.
2 is an exploded perspective view of an H-shaped steel material and a metal-made steel sheet according to the prior art.
3 is a perspective view of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.
4 is an exploded perspective view of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.
FIG. 5 is a bottom view (a) and a bottom view (b) of a steel sheet in a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.
FIG. 6 is an installation view showing a construction of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention. FIG.
7 is a perspective view of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention, in which a reinforcing brace is installed on a steel plate.
8 is a perspective view of an adjusting jack for fixing a reinforcing brace installed on a steel plate in a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.
9 is a plan view of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.
10 is a flowchart illustrating a method of constructing a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an earth retaining structure using a reinforcing member according to the present invention and a construction method thereof will be described in detail with reference to the accompanying drawings.

The present invention can prevent the ground subsidence due to groundwater leakage and water level change when the earthquake groundwork is constructed for the construction of underground structures and prevent the surrounding soil or groundwater from entering the construction site, The present invention relates to a retaining structure using a steel plate provided with a reinforcing bridge capable of expanding the buried distance of an H-shaped steel material and a method of constructing the same.

FIG. 3 is a perspective view of a retaining structure using a steel plate having a reinforcing bridge according to the present invention, FIG. 4 is an exploded perspective view of a retaining structure using a steel plate having a reinforcing bridge according to the present invention, and FIG. (A) and a bottom view (b) of a steel sheet in a retaining structure using a steel plate provided with a reinforcing bridge.

3 and 4, the retaining structure using the steel plate with the reinforcing bridge according to the present invention includes an H-shaped steel material 10 and a steel plate 20 provided between the H-shaped steel material 10 .

The H-shaped steel material 10 is composed of a web 11 and flanges 12 formed on both sides of the web 11 and embedded in the ground at regular intervals corresponding to the width of the steel sheet 20 to be described later.

At this time, the H-shaped steel material 10 may be buried through a driving pile machine through a soft ground or gravel guided by a guide beam, and a relatively hard ground such as an auger, Or by inserting an H-shaped steel material after perforating the ground with a tipper (T-4), and burrowing sand or the like around the inserted H-shaped steel material 10.

The steel plate 20 is inserted between the H-shaped steel plates 10 to form a wall structure of the aquedged waterproofing plate and includes a plate portion 100 and a plate portion 100. The steel plate 20 is bent at both ends of the plate portion 100, A second bending portion 102 extending from the first bending portion 101 and being formed to be parallel to the plate portion 100 and a second bending portion 102 extending from the first bending portion 101, And a plurality of reinforcing bridges 200 are provided at predetermined intervals between the reinforcing bridges.

FIG. 5 is a bottom view (a) and a bottom view (b) of a steel sheet in a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.

5, the reinforcing bridge 200 includes a bridge 210 and a reinforcing plate 220 to prevent deformation of the plate 100 due to the earth pressure, and is symmetrical in the left and right direction .

The bridge 210 may be configured to have a predetermined inclination, one end of which is connected to the second bent portion 102 and the other end of which is connected to the plate portion 100.

The reinforcing plate 220 is disposed between the other ends of the bridge 210 and attached to the plate portion 100. The coupling with the plate portion 100 can be established by bolting or welding. have. At this time, when the coupling between the reinforcing plate 220 and the plate portion 100 is coupled by bolting using a bolt and a nut, the steel plate 20 is broken or damaged by the resistance of the ground in the process of being buried in the ground. , The frictional resistance with the ground is increased, and the power of the embedment to be embedded can be increased, so that it is preferable to be joined by welding.

Here, the bridge 210 may be formed to be inclined from the second bent portion toward the center of the plate portion.

The degree of deflection when the working pressure (earth pressure) is a distributed load is proportional to the fourth power of the length. This can be expressed by the following equation (1).

Equation 1)

Where W is the weight, L is the length of the beam, E is the modulus of elasticity, and I is the cross-sectional secondary moment.

That is, under the condition that the elastic modulus E and the second moment of area I are the same, the shorter the length L, the smaller the degree of deflection.

Accordingly, when the bridge 210 is formed to be inclined from the second bent portion to the center portion of the plate portion, the overall length is reduced to L-2L ', and deflection may occur in proportion to the square of the reduced length Therefore, there is an advantage that the deflection degree can be greatly improved.

Depending on the design conditions, a plurality of the reinforcing bridges 200 may be installed on the steel plate 20 in the vertical direction. When a plurality of the reinforcing bridges 200 are installed on the steel plate 20 in the vertical direction, since the earth pressure received from the lower layer is higher than the earth pressure received from the upper layer, As shown in FIG. 3, the interval between the first reinforcing bridge 200a at the bottom and the second reinforcing bridge 200b disposed at the upper portion is G1, and the interval between the second reinforcing bridge 200b and the top A gap between the third reinforcing bridge 200c and the fourth reinforcing bridge 200d disposed on the third reinforcing bridge 200c is G3 and a distance between the third reinforcing bridge 200c and the fourth reinforcing bridge 200d disposed on the third reinforcing bridge 200c is G2, Assuming that the gap between the reinforcing bridge 200d and the fifth reinforcing bridge 200e disposed thereon is G4, the interval between the reinforcing bridges may be G1 <G2 <G3 <G4.

In addition, the fifth reinforcing bridge 200e located at the uppermost position can be omitted in accordance with design conditions because the earth pressure acting on the fifth reinforcing bridge 200e is weak.

In addition, the lower end of the first reinforcing bridge 200a located at the lower part may have a tapered shape formed to be inclined in a direction in which the first reinforcing bridge 200a is embedded, thereby minimizing the resistance due to burial.

The reinforcing bridge 200 constructed as described above can be integrated with the steel plate 20 so that even when the steel plate 20 is buried in the ground with a propeller or the like, Since the ground resistance can be minimized by being disposed inside the flange 12 of the steel material 10 and the punched space can be utilized even after the ground is pierced by an auger or the like, So that the steel plate 20 can be easily embedded between the H-shaped steel plates 10.

FIG. 6 is a view showing a state of installation of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.

According to the present invention, since the plurality of reinforcing bridges are provided along the vertical direction of the steel sheet, the rigidity of the steel sheet is improved, so that even if the thickness of the steel sheet is made thin, it is possible to prevent the occurrence of overburden. Also, since the earth retaining method using the steel plate provided with the reinforcing bridge according to the present invention is a very important process for embedding the H-shaped steel material in the ground, when the thickness is made the same as that of the conventional steel plate, Accordingly, since the H-shaped steel material can be installed at a wide interval, it is possible to reduce the number of H-shaped steel pieces to be buried, thereby shortening the construction period and performing precise construction.

In addition, since the reinforcing bridge is installed integrally with the steel plate, the steel plate is installed and the rigidity against the earth pressure is generated by merely embedding the steel plate in the ground.

FIG. 7 is a perspective view showing a state where a reinforcing brace is installed on a steel plate in a retaining structure using a steel plate having a reinforcing bridge according to the present invention, FIG. 8 is a perspective view of a steel plate having a reinforcing bridge according to the present invention, FIG. 2 is a perspective view of an adjusting jack for fixing a reinforcing restraining material. 9 is a plan view of a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.

7 and 8, a reinforcing brace material 300 may be further provided between the reinforcing bridges, and the reinforcing brace material 300 may include a reinforcing bar 310 installed on the plate portion 100 And an adjustment jack 320 installed between both ends of the reinforcing bar 310 and the second bent portion 102 to fix and support the position of the installed reinforcing bar 310.

The pedestal 330 may be further provided on the plate portion 100 to support the reinforcing bar 310 from below and the pedestal 330 may be installed in the ground during the process of the steel plate 20 being buried in the ground, Can be formed in a shape that minimizes the resistance according to the resistance. That is, as shown in FIG. 7, the upper portion is configured to be inclined in a direction embedded in the ground, and the upper portion thereof is configured to allow the reinforcing bar 310 to be seated.

The reinforcing bar 310 is formed in the left-right direction of the steel plate 20 and is disposed on the pedestal 310. At this time, the reinforcing bar 310 may be made of wood or iron, and may be fixed or separated by the adjusting jack 320, which will be described later, so that it can be easily recycled.

8 and 9, the adjustment jack 320 is disposed between the reinforcing bar 310 and the second bending part 102 to fix the mounting position of the reinforcing bar 310, Thereby pressing the fixed reinforcing bar 310.

The adjusting jack 320 includes a supporting piece 321 which is in surface contact with the reinforcing bar 310 while a bolt 322 formed in the direction of the second bending portion 102 from the supporting piece 321, And the gap between the reinforcing bar 310 and the second bending part 102 is increased by rotating the bolt 322 to adjust the gap between the reinforcing bar 310 and the second bending part 102 And a nut 323 for fixing the reinforcing bar 310.

The reinforcing brace material 300 may be installed after or after the earthworks work and may be installed in accordance with the earth pressure received by the steel plate 20.

By the constitution of the reinforcing member 300, the resistive force by the earth pressure can be maximized, and there is an advantage that it is possible to prevent the occurrence of the folding phenomenon of the steel sheet as well as the degree.

The retaining structure using the steel plate having the reinforcing bridge according to the present invention may be used as an arm crushing wall to be installed on a cut-off portion to protect a traveling vehicle from falling rocks and sand.

The rock crushing barrier is intended to protect a traffic vehicle from rocks and soil, and it requires a certain level of rigidity in order to protect rocks falling. For this purpose, in the past, work has been carried out to increase the thickness of the steel plate or to weld an additional reinforcing material such as an L-shaped steel plate at a high altitude.

However, when the thickness of the steel sheet is increased, there is a problem in that it is not easy to handle because the weight becomes heavy together. In addition, when the reinforcing material is welded at a high angle, there is a problem that the construction is difficult and there is a risk of a safety accident, so that the construction period is delayed or the cost is increased.

Therefore, the retaining structure using the steel plate provided with the reinforcing bridge according to the present invention is advantageous in that the steel plate having the reinforcing bridge is installed so that the H-shaped steel material is embedded and exposed to the ground, have.

Next, the construction process of the earth retaining structure using the steel plate provided with the reinforcing bridge according to the present invention will be described.

10 is a flowchart illustrating a method of constructing a retaining structure using a steel plate provided with a reinforcing bridge according to the present invention.

Referring to FIG. 10, a method of constructing a retaining structure using a steel plate having a reinforcing bridge according to the present invention includes a site clearance step S10, a guide beam installing step S20, an H- A beam removing step S40, a steel sheet embedding step S50, a displacement measuring step S60, an earthworking step S70, a reinforcing support relocation step S80, and a reinforcement restoring step S90.

1. Site clearance (S10)

The site clearance step (S10) is a basic operation step for forming the earth retaining structure (100) by performing surveying of places for terrestrial engineering works, checking underground objects, planarizing the ground surface and performing stripping work.

2. Guide beam installation step (S20)

The guide beam installing step S20 is a step of installing a guide beam having a plurality of insertion ports into which the H-shaped steel material 10 can be inserted, on the flattened ground through the site clearance step S10.

At this time, the guide beam is a steel beam having an insertion port formed at regular intervals, the insertion port is formed so as to be precisely aligned with the H-shaped steel material 10, and the gap of the insertion port is a width of the steel plate 20 Respectively.

3. H-shaped steel material embedding step (S30)

The H-shaped steel material embedding step S30 is a step of disposing and embedding the H-shaped steel material 10 into a guide beam insertion slot installed through the guide beam installing step S20.

The H-shaped steel material 10 should be embedded with the flange 12 facing the left and right sides, and a uniform gap can be maintained by the guide beams. The H-shaped steel material 10 is pressurized by the up-and-down vibration periodically applied by the heavy construction equipment and embedded in the ground.

In addition, it is also possible to place the H-shaped steel material (10) by using a relatively hard ground or a hinge or the like in a place where the earthworks is to be carried out. Inappropriate construction work is carried out using an excavator such as an Auger The H-shaped steel material embedding step S30 may be performed, and in this case, the guide beam installing step S20 may be omitted.

4. Guide beam removing step (S40)

The guide beam removing step S40 is a step of removing the guide beam installed through the guide beam installing step S20 from the ground, and is performed after the H-shaped steel material is completely buried in the H-shaped steel material embedding step .

5. Steel sheet embedding step (S50)

The steel sheet embedding step S50 is a step of embedding the steel sheet 20 between the H-shaped steel materials buried through the H-shaped steel material embedding step S30. The steel sheet embedding step S50 is performed by using a heavy construction equipment And a step of burying the steel plate 20 into the ground using a vibration pressing method. At this time, the reinforcing bridge 200 provided on the steel plate 20 is located in the ground according to the embedding of the steel plate 20.

6. Displacement measuring step (S60)

The displacement measurement step S60 is a step of installing a wale band and a bracket to fix the sides of the H-shaped steel material 10 in a state where the steel sheet embedding step S50 is completed, and confirming whether or not there is a construction defect.

7. Earthwork stage (S70)

The soil-earth-moving step S70 is a step of excavating the inner soil of the soil-retaining structure after it is confirmed through the displacement measurement step (S60) that there is no abnormality.

8. Reinforcement Support Relocation Step (S80)

The step of rearranging the reinforcing braces S80 is a step of disposing the reinforcing bar 310 on the pedestal 330 installed on the steel plate 20 buried through the steel plate embedding step S50.

9. Reinforcement support restoring step (S90)

The reinforcing braid restoring step S90 may be performed by providing an adjusting jack 320 between the reinforcing bar 310 and the second bent portion 102 disposed through the reinforcing brace relocation step S80, . In step S80, the adjusting jack 320 is installed, and the reinforcing bar 310 is fixed through the rotation of the nut 323.

Here, the displacement measuring step S60, the reinforcing support relocation step S80, and the reinforcing support restoring step S90 may be performed at any time during the earthworking step S70, Can be omitted.

According to the present invention, since a plurality of reinforcing bars are provided along the vertical direction of the steel plate, rigidity of the steel plate is improved, so that it is possible to prevent deformation of the steel plate due to earth pressure or deformation of the steel plate due to earth pressure, It is possible to reduce the installation number of the H-shaped steel material, shorten the construction period, and secure the safety according to the precision construction.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: H-shaped steel material 11: web
12: flange 20: steel plate
100: plate portion 101: first bent portion
102: second bending part 200: reinforcing bridge
200a to 200e: reinforcement bridge 210: bridge
220: reinforcing plate 300: reinforcing braiding material
310: Rib 320: Adjusting jack
321: Support piece 322: Bolt
323: Nuts

Claims (5)

A retaining structure comprising a plurality of H-shaped steels formed of webs and flanges formed on both sides of the web at regular intervals, and a steel sheet interposed between the H-shaped steels to form a water retaining wall surface,
In the steel sheet,
Plate portion;
A first bent portion bent at both ends of the plate portion and formed in parallel with the web;
A second bent portion extending and bent from the first bent portion and formed in parallel with the plate portion; And
A plurality of reinforcing bridges provided at predetermined intervals between the second bent portions;
Respectively,
Wherein the reinforcing bridge comprises:
A bridge having one end connected to the second bent portion and the other end leading to the plate portion; And
A reinforcement plate disposed between the other end of the bridge and the opposite end of the bridge and attached to the plate portion;
Lt; / RTI &gt;
The bridge includes:
Wherein the first bent portion is inclined from the second bent portion toward the center portion of the plate portion.
The method according to claim 1,
And a reinforcing brace provided between the reinforcing bridges,
The reinforcing brace material
A reinforcing plate disposed to be in contact with the plate portion; And
A regulating jack installed between both ends of the reinforcing bar and the second bent portion to fixedly support the installed reinforcing bars;
Wherein the reinforcing bridge comprises a steel plate.
The method of claim 2,
The adjustment jack may include:
A supporting piece in surface contact with the reinforcing member;
A bolt formed in the direction of the second bent portion from the support piece; And
A nut screwed to the bolt portion and contacting with the second bent portion at one end thereof by being loosened;
The reinforcing bridge according to claim 1, wherein the reinforcing bridge comprises a steel plate.
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