KR101779163B1 - anchor bolt and tunnel constructing method using thereof - Google Patents

anchor bolt and tunnel constructing method using thereof Download PDF

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Publication number
KR101779163B1
KR101779163B1 KR1020160027742A KR20160027742A KR101779163B1 KR 101779163 B1 KR101779163 B1 KR 101779163B1 KR 1020160027742 A KR1020160027742 A KR 1020160027742A KR 20160027742 A KR20160027742 A KR 20160027742A KR 101779163 B1 KR101779163 B1 KR 101779163B1
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KR
South Korea
Prior art keywords
waterproof sheet
waterproof
bolt
flange
anchor bolt
Prior art date
Application number
KR1020160027742A
Other languages
Korean (ko)
Inventor
김지섭
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김지섭
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Priority to KR1020160027742A priority Critical patent/KR101779163B1/en
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Publication of KR101779163B1 publication Critical patent/KR101779163B1/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
    • E04B1/40—
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/383—Waterproofing; Heat insulating; Soundproofing; Electric insulating by applying waterproof flexible sheets; Means for fixing the sheets to the tunnel or cavity wall
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00—Large underground chambers; Methods or apparatus for making them

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The present invention discloses an anchor bolt capable of improving adhesion between a waterproof sheet of an anchor bolt and a waterproof membrane to improve waterproof performance inside the tunnel.
As an example, an upper bolt including a plurality of threads; An upper flange formed at a lower portion of the upper bolt to have a larger diameter than the upper bolt; A lower bolt formed to include a plurality of threads at a lower portion of the upper flange; A waterproof sheet including a first surface and a second surface facing each other and coupled to the lower bolt so as to be in close contact with the upper flange, the first surface having a plurality of convex portions and concave portions; A lower flange coupled to the lower bolt to closely contact the waterproof sheet; A fixing nut fastened to the lower bolt and fixing the waterproof sheet and the lower flange; And an anchor bolt that includes a connection ring that is fastened to an end of the lower bolt.

Description

An anchor bolt and a tunnel construction method using the same,

The present invention relates to an anchor bolt and a tunnel construction method using the same.

Anchor bolts are used to easily secure various reinforcing bars or other structures in various locations.

Specifically, when constructing an underground tunnel, a basement, an indoor swimming pool, etc., a rock and soil are excavated, a roughly flat shotcrete layer is formed on the inner wall, and a nonwoven fabric and a waterproof film are attached to the shotcrete layer. At this time, the anchor bolt is fixed to the shotcrete layer, so that the nonwoven fabric and the waterproof film can be firmly fixed to the shotcrete layer. In addition, reinforcing bars or the like are fixed to the ends of the anchor bolts, and finally a lining layer of a certain thickness is formed of cement or concrete, thereby completing the construction of the tunnel.

The present invention provides an anchor bolt for improving the waterproof performance inside a tunnel by improving the adhesion between the waterproof sheet of the anchor bolt and the waterproof membrane, and a method of constructing the tunnel using the anchor bolt.

An anchor bolt according to the present invention includes an upper bolt including a plurality of threads; An upper flange formed at a lower portion of the upper bolt to have a larger diameter than the upper bolt; A lower bolt formed to include a plurality of threads at a lower portion of the upper flange; A waterproof sheet including a first surface and a second surface facing each other and coupled to the lower bolt so as to be in close contact with the upper flange, the first surface having a plurality of convex portions and concave portions; A lower flange coupled to the lower bolt to closely contact the waterproof sheet; A fixing nut fastened to the lower bolt and fixing the waterproof sheet and the lower flange; And a connection ring which is fastened to an end of the lower bolt.

Here, the upper bolt, the upper flange, and the lower bolt may be integrally formed.

A plurality of ring-shaped recesses may be formed in the lower portion of the upper flange.

The convex portion and the concave portion may be alternately formed along one direction of the waterproof sheet.

The waterproof sheet may further include a reinforcing portion protruding to a predetermined thickness at a central portion of the second surface.

Further, the reinforcing portion may be formed to have a diameter equal to or larger than a diameter of the upper flange and the lower flange.

Also, a plurality of convex portions and concave portions may be provided on the second surface of the waterproof sheet.

The second surface of the waterproof sheet may be flat.

In addition, the convex portion and the concave portion may be alternately arranged in the transverse direction and the longitudinal direction.

The anchor bolt is fixed to the inside of a tunnel in which a rock, a shotcrete layer, a nonwoven fabric, a waterproofing membrane and a lining layer are sequentially formed from the inside to the outside, the upper bolt penetrating through the shotcrete layer, the nonwoven fabric and the waterproof membrane, The first side of the waterproof sheet may be in close contact with the waterproof film.

In addition, the waterproof film may be provided with a plurality of convex portions and concave portions corresponding to the waterproof sheet.

Further, a hot melt adhesive is applied to the peripheral region corresponding to the end portion of the waterproof sheet, so that the waterproof sheet and the waterproof film can be adhered to each other.

A method of constructing a tunnel using an anchor bolt according to an embodiment of the present invention includes: excavating a rock to form a tunnel; Forming a shotcrete layer to cover the inner wall of the excavated rock mass; Attaching a waterproof film having a nonwoven fabric and a plurality of convex portions and a concave portion to the shotcrete layer; Fixing an anchor bolt including holes in the shotcrete layer, the nonwoven fabric, and the waterproof membrane, and a waterproof sheet having a plurality of convex portions and concave portions on one surface thereof; Applying a hot melt adhesive to a peripheral region corresponding to an end portion of the waterproof sheet, and introducing hot air into the tunnel; And forming a lining layer to cover the waterproof membrane and the anchor bolts.

Here, the anchor bolt includes an upper bolt including a plurality of threads, and the upper bolt may be inserted into holes of the shotcrete layer, the nonwoven fabric, and the waterproof membrane.

The waterproof sheet may be positioned such that one side thereof faces the waterproof film.

The convex portion and the concave portion may be alternately formed along one direction of the waterproof sheet.

Also, a plurality of convex portions and concave portions may be provided on the other surface facing the one surface of the waterproof sheet.

Further, the other surface facing the one surface of the waterproof sheet may be formed as a flat surface.

In addition, the convex portion and the concave portion may be alternately arranged in the transverse direction and the longitudinal direction.

The anchor bolt according to the present invention and the method of constructing a tunnel using the anchor bolt according to the present invention can improve the adhesion between the waterproof membrane and the waterproof sheet and improve the waterproof performance of the inside of the tunnel. Can be improved.

1 is an exploded perspective view of an anchor bolt according to an embodiment of the present invention.
2 is a cross-sectional view of an anchor bolt according to an embodiment of the present invention.
3 is a cross-sectional view of a waterproof sheet of an anchor bolt according to an embodiment of the present invention.
4A to 4H are sequential sectional views illustrating a tunnel construction method using an anchor bolt according to an embodiment of the present invention.
5A is a cross-sectional view of a waterproof sheet of an anchor bolt according to another embodiment of the present invention.
5B is a cross-sectional view of a waterproof sheet of an anchor bolt according to another embodiment of the present invention.
5C is a perspective view of a waterproof sheet of an anchor bolt according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

Hereinafter, an anchor bolt according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

1 is an exploded perspective view of an anchor bolt according to an embodiment of the present invention. 2 is a cross-sectional view of an anchor bolt according to an embodiment of the present invention. 3 is a cross-sectional view of a waterproof sheet of an anchor bolt according to an embodiment of the present invention.

1 to 3, an anchor bolt 100 according to an embodiment of the present invention includes a bolt 110, a waterproof sheet 120, a lower flange 130, a fixing nut 140, ).

The bolt 110 includes an upper bolt 111, an upper flange 112, and a lower bolt 113. The upper bolt 111 includes a plurality of threads on its surface. A substantially plate-shaped upper flange 112 is formed integrally with the upper bolt 111 at a lower portion of the upper bolt 111. At this time, the upper flange 112 may have a larger diameter than the upper bolt 111. A lower bolt 113 is formed on the lower surface of the upper flange 112 and includes a plurality of threads on the surface integrally with the upper flange 112.

Here, the upper bolt 111 passes through the inside of the shotcrete layer during the construction of the tunnel to be described later, so that the anchor bolt 100 can be fixed to the shotcrete layer. The waterproof sheet 120, the lower flange 130, the fixing nut 140, and the coupling ring 150 may be fastened to the lower bolt 113.

A plurality of grooves 112a may be formed in the shape of a ring on the lower surface of the upper flange 112. When the waterproof sheet 120 and the upper flange 112 are compressed, the upper surface of the waterproof sheet 120 may be closely contacted with the groove 112a by the pressure of the lining layer, which will be described later. As a result, the adhesion between the upper flange 112 and the waterproof sheet 120 is improved.

The waterproof sheet 120 is formed of a flexible waterproof material and has a substantially disc shape. The waterproof sheet 120 may be formed to have a larger diameter than the upper flange 112 and the lower flange 130. The waterproof sheet 120 includes a first surface 120a facing the upper flange 112 and a second surface 120b facing the lower flange 130. [

A through hole 121 through which the lower bolt 113 passes is formed at the center of the waterproof sheet 120. The waterproof sheet 120 is coupled to the lower bolt 113 such that a central portion of the first surface 120a is in close contact with the upper flange 112.

A reinforcing portion 122 having a predetermined diameter around the through hole 121 is formed on the second surface 120b of the waterproof sheet 120. [ The reinforcing portion 122 is protruded to have a predetermined thickness from the second surface 120b. The reinforcing portion 122 is formed to have the same diameter as the upper flange 112 and the lower flange 130 or to have a diameter larger than that of the upper flange 112 and the lower flange 130. Durability can be maintained even if the waterproof sheet 120 is tightly adhered to the upper flange 112 and the lower flange 130 by the reinforcing portion 122. That is, since the thickness of the contact between the lower bolt 113 and the waterproof sheet 120 is increased by the reinforcing portion 122, the waterproof sheet is prevented from being torn by the stress generated in forming the lining layer, which will be described later.

A plurality of convex portions 123 and concave portions 124 may be formed on the first surface 120a of the waterproof sheet 120. Here, the convex portion 123 and the concave portion 124 may be alternately arranged in a straight line ('-' shape) along one direction. That is, in FIG. 1, the convex portion 123 and the concave portion 124 are formed alternately along the longitudinal direction. If the waterproof sheet 120 is rotated, the waterproof sheet 120 may be in a transverse direction rather than in a longitudinal direction. Accordingly, the present invention is not limited to a specific direction. If the waterproof sheet 120 is formed with the convex portions 123 and the concave portions 124 alternately along one direction It is acceptable.

In particular, referring to FIG. 3, the first surface 120a of the waterproof sheet 120 is formed in a curved shape having a wavy pattern. Here, a portion corresponding to a floor having a high height can be defined as a convex portion 123, and a portion corresponding to a low-height bone can be defined as a concave portion 124. [ The waterproofing sheet may have a plurality of convex portions and concave portions as in the waterproof sheet 120 described below. Therefore, the convex portion and the concave portion of the waterproof sheet 120 correspond to the concave portion and the convex portion of the waterproof film, and the adhesion can be improved. The flexibility of the waterproof sheet 120 is further improved by the convex portions 123 and the concave portions 124 even if the respective convex portions and the concave portions are mismatched. It is possible to improve adhesion.

Meanwhile, the central portion of the waterproof sheet 120, that is, a portion in close contact with the upper flange 112 and the lower flange 130 may be formed flat. That is, a region of the waterproof sheet 120 which is in close contact with the upper flange 112 and the lower flange 130 is formed to be more flat, so that the close contact with the upper flange 112 and the lower flange 130 can be more effectively achieved. However, the present invention is not limited to this form, and the convex portion and the concave portion may also be formed at the center portion of the waterproof sheet 120. [

The lower flange 130 is formed in a substantially circular plate shape and is in close contact with the second surface of the waterproof sheet 120. The lower flange 130 has a through hole at the center thereof and is engaged with the lower bolt 113.

The fixing nut 140 has a through hole at its center and is engaged with the lower bolt 113. The fixing nut 140 is coupled to a lower portion of the lower flange 130 to firmly fix the waterproof sheet 120 and the lower flange 130 to the lower bolt 113. Particularly, by tightening the fixing nut 140, the anchor bolt 100 can be tightly adhered to the inner wall of a tunnel to be described later.

The connection ring 150 is coupled to the lower end of the lower bolt 113 at a lower portion of the fixing nut 140. Reinforcing bars or external molds may be directly coupled to the connection rings 150.

Hereinafter, a method of constructing a tunnel to which an anchor bolt according to an embodiment of the present invention is applied will be described with reference to FIGS. 4A to 4H.

4A to 4H are sequential sectional views illustrating a tunnel construction method using an anchor bolt according to an embodiment of the present invention.

Referring to FIG. 4A, a rock excavation step is performed to excavate a rock 10 to form a tunnel using a conventional technique. At this time, the inner wall of the rock block 10 has a relatively large surface curvature.

Referring to FIG. 4B, a shotcrete layer forming step of forming a shotcrete layer 20 having a predetermined thickness on the inner wall of the rock block 10 is performed. That is, the rock blocks 10 having a large surface curvature are located on the inner side by the shotcrete layer 20, and the flatness of the inner wall of the tunnel as a whole can be improved.

Referring to FIG. 4C, the nonwoven fabric 30 and the waterproofing film 40 are attached to the entire surface of the shotcrete layer 20. The nonwoven fabric 30 is interposed between the shotcrete layer 20 and the waterproofing film 40 to prevent the waterproofing film 40 from being damaged by the shotcrete layer 20. The waterproof membrane (40) is made of a waterproof material and can prevent moisture from flowing into the tunnel from the inner wall of the tunnel. Further, although not shown in detail in the drawing, the waterproof film 40 has a wave pattern in which a cross section has a plurality of valleys and a floor. It is possible to induce the moisture in the inner wall of the tunnel to flow into a drain pipe (not shown) due to the crest formed on the waterproof membrane 40 and the floor. This will be described later.

4D and 4E, a hole is formed in the shotcrete layer 20, the nonwoven fabric 30, and the waterproof film 40, and an anchor bolt fixing step for fixing the anchor bolt 100 thereto is performed. The nonwoven fabric 30 and the waterproof film 40 can be firmly fixed to the shotcrete layer 20 by the anchor bolts 100.

In particular, referring to FIG. 4E, which is an enlarged view of part A of FIG. 4D, the waterproofing film 40 substantially includes a plurality of valleys and floors on its upper and lower surfaces, . That is, a plurality of convex portions and concave portions are formed on the surface of the waterproof film 40. Therefore, leakage occurs along the space between the anchor bolt 100 and the holes of the shotcrete layer 20 and the nonwoven fabric 30, so that the inside of the waterproofing film 40, in particular, the waterproofing film 40 and the non- The waterproof performance of the tunnel can be further improved by discharging water to the drain pipe (not shown) by the convex portion and the concave portion of the waterproof film 40, even if moisture flows into the space between the waterproof film 40 and the waterproof film 30.

 The anchor bolt 100 according to the present invention also has a plurality of protrusions 123 (see FIG. 3) and recesses 124 (see FIG. 3) similar to the waterproofing film 40 on the first surface of the waterproof sheet 120, (See FIG. The flexibility of the waterproof sheet 120 can be improved by the convex portion and the concave portion, and the adhesion with the waterproof film 40 can be further improved.

On the other hand, a fine gap D may exist between the waterproof film 40 and the waterproof sheet 120. Of course, it is also possible that the waterproofing film 40 and the waterproof sheet 120 are completely in close contact with each other. That is, the convexities and the concave portions of the waterproof film 40 and the waterproof sheet 120 may be completely aligned with each other and may not match each other.

Referring to FIGS. 4F and 4G, a hot melt process and a hot air supply process for finishing the end portion of the waterproof sheet 120 and introducing hot air into the tunnel are performed.

The waterproof sheet 120 is completely bonded to the waterproofing film 40 by applying a hot melt adhesive S to an end region corresponding to the periphery of the waterproof sheet 120. [ That is, the space between the waterproof sheet 120 and the waterproof film 40 is completely sealed. Therefore, even when water leaks along the space between the hole of the waterproof membrane 40 and the anchor bolt 100 and water flows into the space between the waterproof sheet 120 and the waterproof membrane 40, By this hot melt, the waterproof performance of the tunnel can be further improved by being completely sealed with the outside.

Thereafter, hot air is supplied into the tunnel to increase the adhesion between the waterproof membrane (40) and the waterproof sheet (120). That is, the waterproof sheet 120 is made of a flexible material. In particular, the flexibility of the waterproof sheet 120 can be improved by the protrusions and recesses. In particular, referring to FIG. 4G, which is an enlarged view of part B of FIG. 4F, the waterproof sheet 120 is heated by hot air to further improve its flexibility, so that adhesion with the waterproof film 40 can be further improved. It is also possible to further press the waterproof sheet 120 in the direction of the waterproof film 40 after the hot air supply to supply the waterproof sheet 120 and the waterproof film 40 more closely. Thus, occurrence of leakage of water in the tunnel can be effectively prevented.

In FIG. 4G, the waterproofing film 40 and the waterproofing sheet 120 are completely in close contact with each other, but there may be a gap between them substantially as shown in FIG. 4E. However, the gap between the waterproof membrane 40 and the waterproof sheet 120 is generally smaller than that before hot air supply (FIG. 4E) after hot air supply (FIG. 4G).

4H, the construction of the tunnel can be completed by fixing the reinforcing bars 50 and the like to the connection ring of the anchor bolt 100 and forming a flat lining layer 60 having a predetermined thickness. That is, the lining layer is positioned on the inner wall of the finally completed tunnel.

Hereinafter, an anchor bolt according to another embodiment of the present invention will be described with reference to FIGS. 5A to 5C.

5A is a cross-sectional view of a waterproof sheet of an anchor bolt according to another embodiment of the present invention. 5B is a cross-sectional view of a waterproof sheet of an anchor bolt according to another embodiment of the present invention. 5C is a perspective view of a waterproof sheet of an anchor bolt according to another embodiment of the present invention. The anchor bolts according to other embodiments of the present invention are the same except for the shape of the waterproof sheet.

Referring to FIG. 5A, the waterproof sheet 220 according to another embodiment of the present invention includes a first surface 220a and a second surface 220b facing each other. The first convex portion 223a and the first concave portion 224a are formed on the first surface 220a and the second convex portion 223b and the second concave portion 224b are formed on the second surface 220b. . The waterproof sheet 220 according to another embodiment of the present invention may have convex portions 223a and 223b on both the first and second surfaces 220a and 220b, And concave portions 224a and 224b.

Referring to FIG. 5B, the waterproof sheet 320 according to another embodiment of the present invention includes a first surface 320a and a second surface 320b facing each other. A convex portion 323 and a concave portion 324 are provided on the first surface 320a. In addition, the second surface 320b may be formed to be flat differently from the previous embodiments. That is, the waterproof sheet 320 according to another embodiment of the present invention may be formed by omitting the reinforcing portion in the embodiment shown in FIG.

Referring to FIG. 5C, the waterproof sheet 420 according to another embodiment of the present invention includes a plurality of convex portions 423 and a concave portion 424 on one side. Specifically, the convex portion 423 and the concave portion 424 are formed so as to cross each other laterally and laterally. In other words, in the embodiment shown in FIG. 3, the protrusions 423 and the recesses 424 are formed in the shape of a rectangle such that the protrusions and recesses are alternately arranged in one direction along the one direction, , Alternately and longitudinally alternately.

However, the present invention is not limited to this, and other embodiments (Figs. 5A, 5B, and 5C) may be used as the anchor bolts according to the first embodiment of the present invention 5c may be used to construct the tunnel.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit and scope of the present invention. For example, It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100; Anchor bolt 120; Waterproof sheet
120a; First surface 120b; Second side
121; Through hole 122; Reinforced portion
123; Convex portion 124; Concave portion
220, 320, 420; Waterproof sheet
220a, 320a; First faces 220b, 320b; Second side
223a, 223b, 323; 423; Convex portions 224a, 224b, 324, and 424; Concave portion
10; Rock mass 20; Shotcrete layer
30; Nonwoven fabric 40; Waterproof membrane
50; Reinforcing steel 60; Lining layer

Claims (19)

An upper bolt including a plurality of threads;
An upper flange formed at a lower portion of the upper bolt to have a larger diameter than the upper bolt;
A lower bolt formed to include a plurality of threads at a lower portion of the upper flange;
A waterproof sheet including a first surface and a second surface facing each other and coupled to the lower bolt so as to be in close contact with the upper flange, the first surface having a plurality of convex portions and concave portions;
A lower flange coupled to the lower bolt to closely contact the waterproof sheet;
A fixing nut fastened to the lower bolt and fixing the waterproof sheet and the lower flange; And
And a connection ring which is fastened to an end of the lower bolt,
A first surface of the waterproof sheet penetrates through a shotcrete layer, a nonwoven fabric, and a waterproof membrane, and the upper surface of the waterproof sheet is sandwiched between the first surface and the second surface of the waterproof sheet, And the waterproof film is provided with a plurality of convex portions and concave portions corresponding to the waterproof sheet,
Wherein the convex portion of the waterproof sheet is in close contact with the concave portion of the waterproof film so that there is no gap between the waterproof sheet and the waterproof film, and the concave portion of the waterproof sheet is in close contact with the convex portion of the waterproof film. The method according to claim 1,
Wherein the upper bolt, the upper flange, and the lower bolt are integrally formed. The method according to claim 1,
And a plurality of ring-shaped recesses are formed in the lower portion of the upper flange. The method according to claim 1,
Wherein the convex portion and the concave portion are alternately formed along one direction of the waterproof sheet. The method according to claim 1,
Wherein the waterproof sheet further comprises a reinforcing portion protruding to a predetermined thickness at a central portion of the second surface. 6. The method of claim 5,
Wherein the reinforcing portion is formed to have a diameter equal to or larger than a diameter of the upper flange and the lower flange. The method according to claim 1,
And the second surface of the waterproof sheet is provided with a plurality of convex portions and concave portions. The method according to claim 1,
And the second surface of the waterproof sheet is formed as a flat surface. The method according to claim 1,
Wherein the convex portion and the concave portion are alternately arranged in the transverse direction and the transverse direction. delete delete The method according to claim 1,
Wherein a hot melt adhesive is applied to a peripheral region corresponding to an end portion of the waterproof sheet to thereby adhere the waterproof sheet to the waterproof film. Excavating the rock to form a tunnel;
Forming a shotcrete layer to cover the inner wall of the excavated rock mass;
Attaching a waterproof film having a nonwoven fabric and a plurality of convex portions and a concave portion to the shotcrete layer;
Fixing an anchor bolt including holes in the shotcrete layer, the nonwoven fabric, and the waterproof membrane, and a waterproof sheet having a plurality of convex portions and concave portions on one surface thereof;
Applying a hot melt adhesive to a peripheral region corresponding to an end portion of the waterproof sheet, and introducing hot air into the tunnel;
And forming a lining layer to cover the waterproof membrane and the anchor bolt
The protrusion of the waterproof sheet is brought into close contact with the concave portion of the waterproof membrane so that there is no gap between the waterproof sheet and the waterproof membrane and the concave portion of the waterproof sheet is in close contact with the convex portion of the waterproof membrane, Way. 14. The method of claim 13,
Wherein the anchor bolt includes an upper bolt including a plurality of threads, and the upper bolt is inserted into a hole of the shotcrete layer, the nonwoven fabric, and the waterproof membrane. delete 14. The method of claim 13,
Wherein the convex portion and the concave portion are alternately formed along one direction of the waterproof sheet. 14. The method of claim 13,
Wherein a plurality of protrusions and recesses are provided on the other surface of the waterproof sheet facing the one surface of the waterproof sheet. 14. The method of claim 13,
And the other surface facing the one surface of the waterproof sheet is formed as a flat surface. 14. The method of claim 13,
Wherein the convex portion and the concave portion are formed so as to alternate with each other in the transverse and longitudinal directions.
KR1020160027742A 2016-03-08 2016-03-08 anchor bolt and tunnel constructing method using thereof KR101779163B1 (en)

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Application Number Priority Date Filing Date Title
KR1020160027742A KR101779163B1 (en) 2016-03-08 2016-03-08 anchor bolt and tunnel constructing method using thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102089552B1 (en) * 2019-09-10 2020-05-26 주식회사 에스에스팀버 A bolt assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102089552B1 (en) * 2019-09-10 2020-05-26 주식회사 에스에스팀버 A bolt assembly

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