KR101588693B1 - Pile for method of ground improvement, and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a file for use in a soil stabilization method, comprising: a front flange portion (120) and a rear flange portion (140) arranged opposite to each other; A web 160 interconnecting the front flange portion 120 and the rear flange portion 140; An inner cut-out portion formed by partially cutting a portion from the front flange portion 120 to the rear flange portion 140 via the web 160 in a predetermined shape for each portion where the support is to be installed; And a tubular sleeve member 200 disposed on the inner cutout portion and supporting the web 160 and having a cavity formed therein. The front flange portion 120 and the rear flange portion 140 And a flange reinforcement member (170) are provided on both sides of the inner cutout along the height direction. By providing a file for a ground stabilization method and a method of manufacturing the same, It is possible to construct a support such as an anchor or a soil nail so that the rigidity of the pile can be improved so as to reduce the construction cost, maximize the use rate of the paper, effectively prevent the deformation of the file due to the stress of the support material and the rear soil, Environment and the like in a more efficient manner.

Description

TECHNICAL FIELD [0001] The present invention relates to a pile for soil stabilization method,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering field, and more particularly, to a file for a ground stabilization method and a manufacturing method thereof.

Generally, a ground stabilization method using a thumb pile file is used to secure the stability of the excavated surface in the construction of a structure such as a basement or a retaining wall of a building.

If the ground is excavated, the ground displacement will inevitably occur. It is very important to select the ground stabilization method to minimize the ground displacement and deformation.

In particular, designing the retaining structures considering the magnitude, distribution and displacement of the transverse earth pressure acting on the wall is very important considering the problems that may occur with excavation.

Generally, the retaining method is divided into a toe-wall method to maintain the self-reliance of the backside soil and a brace method to structurally reinforce it. The most widely used toe wall methods include a thumb pile method, a cast in place pile, Method, Soil Cement Wall (SCW) method, Slurry Wall method, and Sheet Pile method. In addition, the method of supporting the retaining wall is divided into a large beam method and an anchor method. The beam method includes a stratified beam method and a submarine method, and the anchor method includes an earth anchor method and a soilless nailing method.

Among these methods, the earth anchor method is a method of forming an earth retaining wall by a pile piling method using anchor method and preventing an earth wall from collapsing due to a main earth pressure acting in a direction of a toe wall when forming an excavation hole Is widely used.

That is, as a method of stacking a plurality of soil plates between a plurality of H-shaped stays fixed upright at an arbitrary interval, an earth anchor is used to fix a plurality of H-shaped stanchions supporting the soil plate to an earth wall or a rock wall.

At this time, the fixing of the earth anchor is performed by horizontally fixing the H-shaped steel strip to the plurality of H-shaped steel stays fixed and fixed in the longitudinal direction, and fixing the earth anchor to the H-shaped steel strip.

However, in the conventional earth anchor method, the H-shaped steel must necessarily be installed long in the longitudinal direction and in the transverse direction. Therefore, a separate heavy equipment must be mobilized and the risk of accidents becomes very high when the heavy equipment is used.

In addition, since the H-shaped steel is a high-priced product, when a pair of H-shaped steel strips are installed at an arbitrary height on the H-shaped steel strut, the construction cost is increased by using unnecessary materials.

In addition, when the concrete structure is integrally installed on the earth wall supported by the earth anchor, the concrete retaining wall which is much thicker than the thickness of the required wall must be laid due to the interference of the reinforcing bars used in the horizontal beam and the regular structure, There is a problem in that it is excessively charged.

To solve this problem, a thumb pile has been developed for an earth retaining wall which is used to construct anchor anchor or soil nail on a thumb pile itself without using an H-shaped steel strip.

However, in the case of such a thumb pile, since a predetermined area must be cut in the thumb pile itself in order to construct the support, there is a problem that the cross section of the pile is reduced and the rigidity of the pile is lowered due to concentration of stress.

This results in deformation of the pile due to the stress of the backing material and the backing soil, which causes the stability of the entire structure to deteriorate.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a support structure for anchor anchor or soil nail to a thumb pile itself without using an H-shaped steel strip, It is an object of the present invention to provide a file for a soil stabilization method capable of effectively improving the rigidity of a file and effectively coping with various geological environments so as to effectively prevent deformation of the file due to the stress of the support material and the rear soil, The purpose.

In order to solve the above-mentioned problems, the present invention is a file used in a ground stabilization method, comprising: a front flange portion 120 and a rear flange portion 140 disposed opposite to each other; A web 160 interconnecting the front flange portion 120 and the rear flange portion 140; An inner cut-out portion formed by partially cutting a portion of the support material from the front flange portion 120 to the rear flange portion 140 via the web 160 in a predetermined shape for each portion to be applied with the support material; And a tubular sleeve member 200 disposed on the inner cutout and supporting the web 160 and having a cavity formed therein, wherein the front flange portion 120 and the rear flange portion 140) are provided with flange reinforcement members (170) arranged on both sides of the inner cutout along the height direction.

It is preferable that the height H3 of the flange reinforcement member 170 is formed to be higher than the height H1 of the inner cutout portion.

The flange reinforcement member 170 is preferably installed on the front surface of the front flange portion 120 and the rear surface of the rear flange portion 140.

It is preferable that the flange reinforcement members 170 are provided on the front and rear surfaces of the front flange portion 120 and on the front and rear surfaces of the rear flange portion 140, respectively.

The file is characterized in that the transverse section formed by the front flange portion 120, the rear flange portion 140 and the web 160 is of the HS type, and the sleeve member 200 is opened front and rear It is preferable that the side surface is a closed tubular shape.

The inner cutout portion is formed by cutting into a hexahedron having a width W1, a height H1 and a length L1, and L1 is preferably equal to the length L of the file.

The sleeve member 200 is formed in a tubular shape having the same outer dimensions as the inner cutout portion and the outer side surface of the sleeve member 200 is connected to the front flange portion 120, the rear flange portion 140, It is preferable to attach to the incision surface of the web 160 to support the front flange portion 120, the rear flange portion 140, and the web 160.

A first flange reinforcement plate 520 attached to the front flange portion 120; And a second flange reinforcing plate 540 attached to the rear flange portion 140.

A protrusion 210 protruding from the front and rear sides of the sleeve member 200 to support the side edges of the first flange reinforcement plate 520 and the second flange reinforcement plate 540, respectively.

The sleeve member 200 is formed in a tubular shape having a width W2 and a height H2 equal to those of the inner cutout and a length L2 longer than a length L1 of the inner cutout and a length L of the pile, The outer surface of the front flange portion 120 is attached to the cut surface of the front flange portion 120, the rear flange portion 140 and the web 160 so that the front flange portion 120, the rear flange portion 140, It is preferable that the web member 160 is supported and the sleeve member 200 protrudes in the longitudinal direction from the inner cutout portion.

Preferably, a region of the sleeve member 200 protruding longitudinally from the inner cutout is welded to the front flange portion 120 or the rear flange portion 140.

The present invention provides a method of manufacturing a file for the ground stabilization method, comprising the steps of: providing a front flange portion (120) and a rear flange portion (140) oppositely disposed to each other and a front flange portion (120) Preparing a file having a width W, a length L, and a transverse section HS, comprising a web 160 to be connected; An inner side portion extending from the front flange portion 120 to the rear flange portion 140 via the web 160 is partially cut out in a predetermined shape for each portion where the support material is to be applied in the H type file to form an inner cut portion ; Installing a flange reinforcement member (170) on the front flange portion (120) and the rear flange portion (140) so as to be positioned on both sides of the inner cutout portion along a height direction; And attaching a tubular sleeve member (200) disposed on the inner cutout and supporting the web (160) and having a cavity formed therein. The method is presented together.

The length L3 of the flange reinforcement member 170 is preferably formed to be higher than the length L1 of the inner cutout portion.

A step of attaching the first flange reinforcement plate 520 and the second flange reinforcement plate 540 to the front flange portion 120 and the rear flange portion 140 after the step of attaching the sleeve member 200, .

The side edges of the first flange reinforcing plate 520 and the second flange reinforcing plate 540 are supported by the protrusions 210 on the front and rear sides of the sleeve member 200, .

Preferably, the length L2 of the sleeve member 200 is longer than the length L1 of the inner cutout, so that the sleeve member 200 protrudes in the longitudinal direction from the inner cutout.

The length L3 of the flange reinforcement member 170 is preferably equal to the length of the sleeve member 200 protruding from the inner cutout.

The present invention can reduce the cost of construction, maximize the utilization rate of the paper, and reduce the deformation of the pile due to the stress of the support material and the back soil, without using the H-shaped steel strip. The present invention provides a file for a ground stabilizing method capable of effectively coping with various geological environments and the like and a manufacturing method thereof.

1 shows an embodiment of a file for a ground stabilization method according to the present invention,
1 is a perspective view showing a state in which a sleeve member is attached to a file body as a first embodiment of a file;
Figure 2 is a front view of Figure 1;
3 is a plan view of Fig.
4 is a perspective view showing a state in which a flange reinforcing plate is attached to a file as a second embodiment of the file;
5 is a perspective view showing a state in which a sleeve member is attached to a file as a third embodiment of the file;
6 is a plan sectional view showing a state in which a reinforcing plate is attached to a file body as a third embodiment of the file;
7 is a perspective view showing a state in which a flange reinforcing plate is attached to a file as a third embodiment of the file;
8 is a sectional view showing a state in which the head portion of the backing material is fixed to a file as a third embodiment of the file;
9 is a cross-sectional view illustrating various embodiments of the sleeve member.

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

As shown in FIG. 1 and subsequent drawings, the ground stabilizing method file proposed by the present invention includes a front flange portion 120 and a rear flange portion 140 that are disposed opposite to each other; A web 160 interconnecting the front flange portion 120 and the rear flange portion 140; An inner cut-out portion formed by partially cutting a portion from the front flange portion 120 to the rear flange portion 140 via the web 160 in a predetermined shape for each portion where the support is to be installed; And a tubular sleeve member 200 disposed on the inner cutout portion and supporting the web 160 and having a cavity formed therein. The front flange portion 120 and the rear flange portion 140 And flange reinforcement members 170 are respectively installed on both sides of the inner cutout along the height direction.

5, the inner cutout portion includes a front flange portion 120 and a rear flange portion 140 (see FIG. 5). The inner cutout portion includes a front flange portion 120 and a rear flange portion 140, Is cut into a square having a dimension of a width W1 and a height H1 to form respective cut surfaces.

The inner cutout portion is formed by cutting the cut surface of the web 160 into the same plane as the cut surface of the front flange portion 120 and the cut surface of the rear flange portion 140.

In other words, the inner cutout is formed by cutting into a hexahedron having a width W1, a height H1 and a length L1, and the length L1 is equal to the length L of the file.

The inner cut-out portion of such a structure is formed at each position where the support material is to be installed, and it is possible that a plurality of inner cut-out portions are formed in one file.

On the other hand, the file is characterized in that the cross section formed by the front flange portion 120, the rear flange portion 140, and the web 160 is of the HS type.

In addition, the sleeve member 200 to be fitted to the inner cut-out portion described above is formed in a tubular structure in which front and rear are opened and four sides are closed.

The sleeve member 200 is preferably formed in a tubular shape having the same external dimensions as the inside cutout.

In other words, it is made into a tubular shape having a width W2, a height H2, and a length L2, wherein the length L2 has a length equal to the length L of the file.

As a third embodiment of the file of the present invention, the length L2 may be longer than the length L of the file, as shown in FIG.

This is because the cross section of the file is reduced and the stiffness is lowered as the stress is concentrated, so that the structure can be reinforced.

On the other hand, as a first embodiment of the file of the present invention, when the sleeve member 200 is formed in a tubular shape having the same outer dimensions as the inner cutout portion, when the sleeve member 200 is fitted to the inner cutout portion, The outer surface of the flange portion 200 is attached to the cut surface of the front flange portion 120, the rear flange portion 140,

Thus, the four outer sides of the sleeve member 200 are attached to and support the respective incision surfaces of the front flange portion 120, the rear flange portion 140, and the web 160.

The file for the ground stabilizing method proposed in the present invention has the structure in which the flange reinforcement member 170 is installed on the front flange portion 120 and the rear flange portion 140 so as to be positioned on both sides of the inner cut- (Fig. 1).

That is, since the end face of the pile, particularly the web 160, is very reduced due to the formation of the inner cut portion, the rigidity of the pile may be greatly reduced.

The flange reinforcing member 170 is a structure proposed by the present invention in order to prevent the above-mentioned concerns.

In other words, by providing the flange reinforcing member 170, the structural problem of reducing the cross-section of the pile and reducing the rigidity is compensated, thereby effectively preventing the deformation of the pile due to the stress of the support material and the rear soil, It is possible to improve the stability of the apparatus.

In order to maximize this effect, the flange reinforcement member 170 is formed such that the height H3 is formed to be higher than the height H1 of the inner cutout portion (FIG. 2).

It is preferable that the flange reinforcing member 170 is installed in a region where the stress of the pile is more concentrated, that is, the front face of the front flange portion 120 and the rear face of the rear flange portion 140.

The flange reinforcement member 170 is most effective when the flange reinforcement member 170 is provided on the front and rear surfaces of the front flange portion 120 and the front and rear flange portions 140 (FIG. 3).

On the other hand, as shown in Fig. 4, it is preferable to provide the flange reinforcing plate in the pile for the ground stabilization method according to the present invention.

That is, the flange reinforcing plate includes a first flange reinforcing plate 520 attached to the front flange portion 120 and a second flange reinforcing plate 540 attached to the rear flange portion 140.

This is because the section cut of the front flange portion 120 and the rear flange portion 140 is reduced due to the formation of the inner cut portion in the pile, so that it can be said to be an element for reinforcing it.

In addition to the reinforcing means, the first and second flange reinforcing plates 520 and 540 also function as a supporting plate for a supporting force transmitted through the supporting member.

The flange reinforcing plates 520 and 540 may have a size that includes both the cut areas formed in the front and rear flange portions 120 and 140, and may have a size that covers only a portion thereof.

The first flange reinforcement plate 520 and the second flange reinforcement plate 540 may be selectively used. If necessary, only the first flange reinforcement plate 520 may be used to reinforce only the front flange portion 120 It is also possible to adopt it.

The flange reinforcing plates 520 and 540 can be fastened to the pile by a bolt / nut fastening method and can be attached by a welding method.

When the first flange reinforcing plate 520 and the second flange reinforcing plate 540 are both attached, the first and second flange reinforcing plates 520 and 540 are provided with a first support member insertion hole and a second support member, respectively, which can be inserted through the support member through the cavity of the sleeve member 200 It is preferable that an insertion hole is formed.

The first flange reinforcing plate 520 may be provided with two irregularly-fitting brackets 522 for fixing the head portion of the support member. If necessary, the brackets 522 may be attached to the first flange reinforcing plate 520 may be integrally formed.

A bracket 522 is provided with a bracket head 524 for fixing the head portion of the bracket to fix the head portion after the bracket is installed.

FIG. 4 is an enlarged view of a second embodiment of the file for the soil stabilization method proposed by the present invention.

That is, the protruding portion 210 is protruded so as to support the side ends of the first flange reinforcement plate 520 and the second flange reinforcement plate 540 at the front and rear ends of the sleeve member 200 ).
With this structure, mutual coupling of the first and second flange reinforcing plates 520 and 540 and the sleeve member 200 can secure a more stable structure.

delete

The third embodiment of the file for the ground stabilizing method proposed in the present invention is characterized in that the length L2 of the sleeve member 200 is longer than the length L1 of the inner cut portion and the length L of the file (FIG. 5).

That is, the outer surface of the sleeve member 200 is attached to the cut surfaces of the front flange portion 120, the rear flange portion 140, and the web 160 to define the front flange portion 120, the rear flange portion 140, (160), and the sleeve member (200) protrudes in the longitudinal direction from the inner cutout portion (Fig. 67).

In such a structure, in order to solve the problem that stress is concentrated on the incision area and the rigidity is lowered by forming the inner incision part by cutting the section of the file into a predetermined area, the sleeve member 200 is projected by a predetermined length, So as to enlarge the cross-section that is to be borne.

The region where the sleeve member 200 protrudes in the longitudinal direction from the inner cutout portion is attached to the front flange portion 120 or the rear flange portion 140 by welding.

6 shows a state in which the support member 400 such as earth anchor or soil nail is installed on the sleeve member in the third embodiment of the above file.

Accordingly, it is possible to arrange the head portion of the backing material, which has been conventionally fixed using the H-shaped steel strip, inside a cavity formed in the pile according to the present invention, which is used as a thumb pile.

In addition, it is also possible to seal the inside of the cavity of the sleeve member 200 using a filler after fixing the head of the support member 400.

In this case, as the first flange reinforcing plate 520 is attached to the front flange portion 120 so as to cover the cut region of the front flange portion 120, it is easier to seal the cavity.

As a filling material for sealing the head portion of the support material, it is preferable to use plastic or concrete.

That is, it is possible to waterproof or treat the cavity of the sleeve member 200 equipped with the support material head by using a synthetic resin such as epoxy, urethane, or filling a concrete mortar or the like.

In addition, reinforced plastic such as fiber reinforced plastic may be used to prevent the cavity from being deformed due to external stress.

In addition, since the head fixing portion of the support member 400 is disposed in the cavity formed in the pile itself, the area protruding outward is reduced.

Therefore, when the concrete is installed to install the permanent retaining wall after forming the retaining wall, the amount of concrete required for installing the retaining wall can be reduced, thereby reducing the overall construction cost.

In addition, since the H-shaped steel strip is used in the past, the area of the support of the support material that protrudes to the outside has necessarily occupied a considerable area. However, when the support according to the present invention is used, The advantage of this is that you can increase the usage rate of the paper.

The first and second flange reinforcing plates 520 and 540 and the sleeve member 200 to be joined together with the file for the ground stabilization method of the present invention may be made of any material having rigidity required for designing the structure.

The pile for the soil stabilization method of the present invention is preferably made of H-Pile having a steel material, but it can be made of plastic as long as it satisfies the conditions required for constructing an underground wall or a retaining wall .

Particularly, in the case where the file for the ground stabilization method of the present invention is made of a plastic material, engineering plastics or fiber reinforced plastics (FRP: Fiber Reinforced Plastics) in which carbon fibers or glass fibers are combined with plastic It is also possible to manufacture with plastic (Reinforced Plastics).

When it is made of plastic, it is advantageous in construction of permanent retaining wall considering the problem of environmental pollution because it is good in corrosion resistance.

In addition, the use of recycled plastic is more preferable because it can save manufacturing cost as well as reduce plastic byproducts and the like.

It will be understood by those skilled in the art that a reinforced concrete reinforced concrete pile can also be used.

9 is a view for explaining various modifications of the sleeve member 200 according to the present invention.

Fig. 3 (a) shows a case where four edges 222, 224, 226 and 228 of the sleeve member 200 are curved at four corners where they meet each other.

The stress transmitted through the web 160 through the sleeve member 200 having such a configuration can be prevented from concentrating on the edge.

3 (b) shows a case where the deck plate 232 is attached to four sides of the sleeve member 200, and FIG. 3 (c) shows a case where a corrugated support plate 234 is attached.

With this configuration, the rigidity of the sleeve member 200 can be further enhanced.

It is also possible to form the four sides 222, 224, 226, and 228 of the sleeve member 200 as a deck plate or a corrugated support plate.

Particularly, by arranging a deck plate or a corrugated support plate, or by arranging a deck plate or a sleeve member having four sides of corrugated shape on its own, it is possible to more effectively support the stress caused by the support material or the rear soil applied in the horizontal direction .

Therefore, there is an advantage that the file can be more effectively prevented from being deformed.

Next, a method for producing a pile for a soil stabilization method according to the present invention will be described.

A front flange portion 120 and a rear flange portion 140 disposed opposite to each other and a web 160 interconnecting the front flange portion 120 and the rear flange portion 140 and having a width W A step of preparing a file whose length is L and the cross section is HS type is performed.

The step of partially cutting the inner portion from the front flange portion 120 to the rear flange portion 140 through the web 160 in a predetermined shape is performed to form the inner cut portion for each portion of the H- .

A flange reinforcement member 170 is installed on the front flange portion 120 and the rear flange portion 140 so as to be positioned at both sides of the inner cutout portion along the height direction and then supported on the inner cutout portion to support the web 160 A tubular sleeve member 200 having a cavity formed therein is attached.

That is, by providing the flange reinforcement member 170, it is possible to reinforce the rigidity of the reduced-section pile to form the inner cut-out portion.

Here, it is structurally more stable that the length L3 of the flange reinforcement member 170 is longer than the length L1 of the inner cutout portion.

After the step of attaching the sleeve member 200, a step of installing the first flange reinforcing plate 520 and the second flange reinforcing plate 540 on the front flange portion 120 and the rear flange portion 140 is performed .

The first and second flange reinforcing plates 520 and 540 can reinforce the reduced section modulus of the front flange portion 120 and the rear flange portion 140 more effectively by forming the inner cut portion in the file through this step, It is possible to prevent the file from being deformed.

The flange reinforcing plate 520 and the flange reinforcing plate 540 are fixed to the sleeve member 200 by the protrusions 210. The protrusions 210 are formed on the front and rear sides of the sleeve member 200, .

On the other hand, as the length L2 of the sleeve member 200 is formed to be longer than the length L1 of the inner cutout portion and the sleeve member 200 is formed so as to protrude in the longitudinal direction from the inner cutout portion, It is possible to prevent the stress from being concentrated and causing the deformation.

Here, the length L3 of the flange reinforcement member 170 can be made to be equal to the length of the sleeve member 200 protruded from the inner cutout portion.

This provides an effect that the first flange reinforcement plate 520 and the second flange reinforcement plate 540 can be stably attached to the front and rear surfaces of the flange reinforcement member 170 and the sleeve member 200, respectively .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It is to be understood that both the technical idea and the technical spirit of the invention are included in the scope of the present invention.

120: front flange portion 140: rear flange portion
160: web 170: flange reinforcement member
200: sleeve member 210:
520: first flange reinforcing plate 540: second flange reinforcing plate

Claims (17)

As a file used in the soil stabilization method,
A front flange portion 120 and a rear flange portion 140 disposed opposite to each other;
A web 160 interconnecting the front flange portion 120 and the rear flange portion 140;
An inner cut-out portion formed by partially cutting a portion of the support material from the front flange portion 120 to the rear flange portion 140 via the web 160 in a predetermined shape for each portion to be applied with the support material; And
A tubular sleeve member 200 disposed on the inner cutout and supporting the web 160 and having a hollow therein;
A first flange reinforcement plate 520 attached to the front flange portion 120;
And a second flange reinforcing plate (540) attached to the rear flange portion (140)
Flange reinforcement members 170 are respectively installed on the front flange portion 120 and the rear flange portion 140 to be positioned on both sides of the inner cutout portion along the height direction,
The flange reinforcement member 170
The height H3 is formed to be higher than the height H1 of the inner cutout portion,
The front flange 120 and the rear flange 140 are installed on the front surface of the front flange 120 and the rear flange 140 or on the front and rear surfaces of the front flange 120 and the front and rear flanges 140,
Protrusions 210 are formed on the front and rear ends of the sleeve member 200 so as to support the side ends of the first flange reinforcement plate 520 and the second flange reinforcement plate 540,
The width W2 and the height H2 of the sleeve member 200 have the same outer dimensions as the inner cutout,
The length L2 of the sleeve member 200 is formed into a tubular shape longer than the length L1 of the inner cutout portion and the length L of the pile,
The outer surface of the sleeve member 200 is attached to the cut surfaces of the front flange portion 120, the rear flange portion 140 and the web 160 to define the front flange portion 120, 140) and the web (160), the sleeve member (200) projects from the inner cutout in the longitudinal direction,
Wherein a region of the sleeve member (200) protruding from the inner cutout in the longitudinal direction is welded to the front flange portion (120) or the rear flange portion (140). delete delete delete The method according to claim 1,
The file
Wherein the cross-section formed by the front flange portion 120, the rear flange portion 140, and the web 160 is of the HS type,
The sleeve member (200)
And the side surface is closed and the side surface is closed. The method according to claim 1,
The inner cut-
A width W1, a height H1 and a length L1, and L1 is equal to the length L of the file. The method according to claim 6,
The sleeve member (200)
And an outer side surface of the sleeve member 200 is connected to the cut surface of the front flange portion 120, the rear flange portion 140 and the web 160, Is attached to the front flange portion (120), the rear flange portion (140), and the web (160). delete delete delete delete A method of manufacturing a file for a ground stabilizing method according to claim 1,
A front flange portion 120 and a rear flange portion 140 disposed opposite to each other and a web 160 interconnecting the front flange portion 120 and the rear flange portion 140, Preparing a file whose length is L and whose cross-section is HS type;
An inner side portion extending from the front flange portion 120 to the rear flange portion 140 via the web 160 is partially cut out in a predetermined shape for each portion where the support material is to be applied in the H type file to form an inner cut portion ;
Installing a flange reinforcement member (170) on the front flange portion (120) and the rear flange portion (140) so as to be positioned on both sides of the inner cutout portion along a height direction;
Attaching a tubular sleeve member (200) disposed on the inner cutout and supporting the web (160) and having a cavity therein;
Installing a first flange reinforcement plate (520) and a second flange reinforcement plate (540) on the front flange portion (120) and the rear flange portion (140)
The side edges of the first flange reinforcing plate 520 and the second flange reinforcing plate 540 are supported by the protrusions 210 on the front and rear sides of the sleeve member 200, Wherein the method comprises the steps of: 13. The method of claim 12,
And the length L3 of the flange reinforcement member 170 along the longitudinal direction is formed to be higher than the length L1 of the inner cutout portion. delete delete 13. The method of claim 12,
Wherein the length L2 of the sleeve member 200 is longer than the length L1 of the inner cutout so that the sleeve member 200 protrudes in the longitudinal direction from the inner cutout. . 17. The method of claim 16,
A length L3 of the flange reinforcement member 170 along the longitudinal direction is equal to a length of the sleeve member 200 protruding from the inner cutout portion.

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