KR20170000008A - Tunnel construction method with support walls - Google Patents

Tunnel construction method with support walls Download PDF

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Publication number
KR20170000008A
KR20170000008A KR1020150088198A KR20150088198A KR20170000008A KR 20170000008 A KR20170000008 A KR 20170000008A KR 1020150088198 A KR1020150088198 A KR 1020150088198A KR 20150088198 A KR20150088198 A KR 20150088198A KR 20170000008 A KR20170000008 A KR 20170000008A
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KR
South Korea
Prior art keywords
steel
steel material
reinforcing
wall
joining
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KR1020150088198A
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Korean (ko)
Inventor
조현
임재승
최재호
박동인
정덕교
정헌철
Original Assignee
쌍용건설 주식회사
주식회사 비엠에스이앤씨
주식회사 성우지오텍
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Application filed by 쌍용건설 주식회사, 주식회사 비엠에스이앤씨, 주식회사 성우지오텍 filed Critical 쌍용건설 주식회사
Priority to KR1020150088198A priority Critical patent/KR20170000008A/en
Publication of KR20170000008A publication Critical patent/KR20170000008A/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/02—Sheet piles or sheet pile bulkheads
    • 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
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The present invention relates to a trenchless-type tunnel construction method comprising: a reinforcing wall body installation step of installing a reinforcing wall body (100) in a predetermined depth underground in a direction of a tunnel excavation to be close to a wall on one side in the excavated tunnel; a step of excavating a tunnel in a unit section underground in the direction of the tunnel excavation; a step of installing a steel rib (108) to reinforce a crown of the excavated portion of the tunnels unit section; and a steel rib (108) joining step of joining the reinforcing wall body (100) to the steel rib (108). The step of installing the steel rib comprises a step of forming the reinforcing wall body (100) by installing a plurality of concrete piles (500) which have structural steel (510) inserted in the core thereof, and are arranged in rows in a vertical direction underground. The steel rib joining step comprises a step of exposing a joining unit of the structural steel (510) by removing a portion of a surface of the reinforcing wall body (100), and a step of joining the steel rib (108) to the joining unit of the structural steel. The trenchless-type tunnel construction method reduces a construction time as constructability is excellent.

Description

[0001] TUNNEL CONSTRUCTION METHOD WITH SUPPORT WALLS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a civil engineering field, and more particularly, to a tunnel construction method.

The excavation method for the construction of the structure in the low toe - to - tothos section is often applied to the construction method after the installation of the upper ground, which causes the inconvenience to control the traffic for a long time when there is a downtown area.

Therefore, conventionally, a method of completing a tunnel by applying a leg file, an elephant foot, a sidewall reinforcement, or the like in a tunnel mine is generally used for constructing without opening the upper ground of the tunnel.

Conventionally, as shown in FIG. 1, a tunnel construction process of a low-to-fatigue zone is performed by inserting a large-diameter steel pipe 110 in the form of an arch in the direction of travel (X-axis direction) A step of installing a steel support material 108 or a grid support material (hereinafter, referred to as a steel support material) and forming an elevator foot, a shotcrete installation, a rock bolt construction step, a leg file construction, and a side wall reinforcement step.

In order to reinforce the mine according to the conventional method, it is necessary to additionally provide an elephant foot and a leg pile for securing the stability of the steel support material 108 and the stability of settlement, And a step of installing a side wall pile and a girder butt for securing the stability against the side wall load is required, so that the construction period is lengthened and the displacement of the tunnel structure is largely generated.

In order to solve such a problem, the applicant of the present application has filed a patent application (tunnel construction method using a reinforced wall) with No. 10-2010-0080286 and has been registered as No. 10-1254608.

As shown in FIG. 2, the method for constructing a non-detachable tunnel according to the prior art includes forming a reinforcing wall 100 on both sides of a tunnel to be excavated, forming a tunnel loop between the reinforcing walls 100, , Connecting the loop of the tunnel to the reinforced wall (100), and closing the inside of the tunnel.

The step of forming the reinforcing wall 100 on both sides of the tunnel includes supporting the upper ground load of the tunnel to be excavated at least on one side to a predetermined depth based on the tunnel excavation direction along the tunnel excavation direction And installing a plurality of reinforced wall members (100).

In the step of forming the loop of the tunnel, the large-diameter steel pipe 110 is press-fitted in the horizontal direction (X direction) in the work hole of the tunnel, and the inside of the large-diameter steel pipe 110 is grouted, ).

The step of connecting the loop and the reinforced wall 100 may include the step of fixing and connecting the reinforcing wall 100 with the reinforcing wall 100 so that a load acting on the loop is transmitted to the reinforcing wall 100 .

The step of finishing the interior of the tunnel includes a step of placing a shotcrete in a tunnel after fixing and connecting the reinforced wall 100 and the steel support material 108.

Therefore, the reinforcement wall 100 can be received by the upper portion of the tunnel by connecting the reinforcement wall 100 to the steel support 108 after fixing the reinforcement wall 100.

The process of joining the reinforcing wall 100 and the steel material support 108 is as shown in FIGS.

After the upper part of the tunnel is excavated, the side wall of the reinforced wall 100 is partially cut inside the tunnel to provide a mounting part 201 where both ends of the steel supporting material 108 can be mounted, and an anchor 105 is installed Then, the steel support material 108 is fixed to the mounting part 201 and fixed with the anchor 105.

However, such a conventional method has a problem that it is difficult to perform the cutting operation and the anchor installation and fixing work of the reinforced wall 100, and the construction period is prolonged for an excessively long period of time.

It is an object of the present invention to provide a tunnel construction method using a reinforced wall which is excellent in workability and can shorten a construction period.

According to an aspect of the present invention, there is provided a method for installing a reinforced-wall structure, the method comprising: installing a reinforced-wall structure to a depth of a ground along a tunnel excavation direction so as to be adjacent to at least one side wall of the tunnel; Drilling a unit section tunnel in the ground along the tunnel excavation direction; Installing a steel material support (108) for reinforcing the ceiling of the unit section tunnel excavation part; And a steel support material joining step of joining the reinforcing wall body 100 and the steel support material 108. In the non-installation type tunnel construction method, the reinforcing wall installation step may include the steps of: And a step of forming the reinforcing wall body 100 by installing a plurality of concrete piles 500 into which the reinforcing wall pile 500 is inserted by inserting a plurality of concrete piles 500 into the ground, Thereby exposing an engaging portion of the steel material 510; And joining the steel support material (108) to a joint portion of the steel material (510).

The steel material 510 is an H beam, and the flange surface of the H beam is inserted into the concrete pile 500 so as to engage with the steel support material 108.

The steel material 510 may be inserted into the concrete pile 500 so as to be offset.

The step of installing the reinforcing wall includes the steps of forming a perforation hole in the ground and inserting the steel material 510; And pouring concrete onto the perforation hole.

The step of installing the reinforcing wall includes the steps of: preparing a precast pile in which the steel material 510 is inserted in a vertical portion along a vertical direction; And inserting the precast pile into the ground.

The steel support material 108 has an arcuate structure and the end portion of the steel support material 108 is processed to be flat along the lateral direction to form the lateral joining portion 108a and the lateral joining portions 108a Is coupled to the coupling portion of the steel material 510.

The end portion of the steel support member 108 is flattened along the longitudinal direction to form a longitudinal joint portion 108b and a bracket 520 And the longitudinal joint portion 108b of the steel support member 108 is coupled to the bracket 520. [

The provision of the reinforcing wall may include installing a provisional member 530 made of a material that can be easily separated in a joint portion of the steel material 510 and a concrete pile 500 having the steel material 510 inserted in a vertically- And forming the reinforcing wall body 100 by installing a plurality of the reinforcing wall bodies 100 in the ground, wherein the step of joining the steel reinforcing material 100 removes the temporary member 530 from the reinforcing wall body 100, 510); < / RTI > And joining the steel support material (108) to the joining portion of the steel material (510).

Preferably, the steel material 510 is an H beam, the temporary member 530 is a styrofoam, and the styrofoam is disposed on a flange surface of the H beam.

The present invention proposes a tunnel construction method using a reinforced wall which is excellent in workability and can shorten a construction period.

Figures 1 to 4 are process drawings of the prior art.
5 shows an embodiment of the present invention,
5 and 6 are process drawings of the first embodiment.
7 is a process chart of the second embodiment.
8 is a process chart of the third embodiment.
9 is a process chart of the fourth embodiment.
10 and 11 are process drawings of the fifth embodiment.
12 and 13 are process drawings of the sixth embodiment.

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

5, a tunnel construction method using a reinforced wall according to the present invention basically includes a step of reinforcing a wall 100 to a predetermined depth in the ground along a tunnel excavation direction so as to be adjacent to at least one side wall of the tunnel Installing a reinforced wall; Excavating a unit section tunnel in the ground along a tunnel excavation direction; Installing a steel support material (108) for reinforcing the ceiling of the unit section tunnel excavation part; And a steel reinforcing material joining step of joining the reinforcing wall body (100) and the steel reinforcing material (108).

In the step of installing the reinforcing wall, a plurality of concrete piles 500, in which the steel material 510 is inserted in the vertical direction along the vertical direction, is installed in the ground to form the reinforced wall 100.

In addition, the step of joining the steel support material may include the steps of exposing a joint portion of the steel material 510 by removing a part of the surface of the reinforcement wall body 100; And joining the steel material support (108) to the joining portion of the steel material (510) by welding, bolting, or the like.

That is, a large number of concrete piles 500, in which the steel material 510 is inserted in advance, are installed in the ground in the step of installing the reinforced wall, and after the tunnel is excavated, a part of the surface of the reinforced wall 100 is removed (Surface) of the steel material 510 is exposed, and then the steel material support member 108 is joined (or bonded) to the joining portion of the steel material 510.

Although cutting work of a part of concrete is required as in the conventional method, the cutting operation can be performed only to the extent that the surface of the steel material 510 is exposed, and the steel material 510 and the steel material support 108 ), It is possible to shorten the construction period because of excellent workability.

It is preferable for the steel 510 to have the flange surface of the H beam to be coupled with the steel support 108 by applying H beams to the concrete pile 500 (FIG. 5).

The steel material 510 may be inserted to be positioned at the center of the concrete pile 500 but may be inserted into the concrete pile 500 such that the steel material 510 is disposed in the inner side The amount of cutting work is reduced and the construction period can be further shortened (Figs. 8 and 9).

The method of forming the reinforced wall 100 by installing a plurality of concrete piles 500 in which the steel material 510 is inserted is installed in the ground so that it is possible to place the concrete piles 500 in a field installation method or a precast method.

In the field installation method, the reinforced wall 100 can be formed by forming a perforation hole in the ground, inserting the steel material 510, and pouring concrete into the perforation hole.

In the case of the pre-casting method, a precast pile having a steel material 510 inserted in a vertical portion along the vertical direction is manufactured, and the precast pile is inserted into the ground by an insertion method, a hunting method or a combination method thereof The reinforced wall 100 can be formed.

The steel support member 108 has an arcuate structure. The steel support member 108 having such a structure and the steel member 510 can be combined by the following embodiments.

First, the end portion of the steel support member 108 is formed to be flat along the transverse direction to form the lateral joint portion 108a, and the lateral joint portion 108a of the steel support member 108 is joined to the joint portion of the steel member 510 Welding, bolting, or the like (Fig. 6).

This has the advantage that the steel support member 108 and the steel member 510 can be joined without a separate joining member.

Second, the end portion of the steel support member 108 is flattened along the longitudinal direction to form the longitudinally joined portion 108b. After the bracket 520 is joined to the joint portion of the steel member 510, The longitudinally joined portion 108b of the bracket 520 can be joined to the bracket 520 by welding, bolting, or the like (Fig. 7).

This requires an additional bracket, but has an advantage in that the labor for machining the longitudinal joint 108b of the steel support member 108 is less than that required for machining the transverse joint 108a.

On the other hand, a provisional member 530 made of a material (styrofoam or the like) which is easy to release is provided in advance in the joint portion of the steel material 510, and a concrete pile having the upper temporary member and the steel material 510 inserted in the vertical direction along the vertical direction The reinforcing wall 100 is formed by installing a plurality of the reinforcing walls 500 in the reinforcing wall 100 and the provisional member 530 is removed from the reinforcing wall 100 after the tunnel is excavated, And a method of bonding the steel support material 108 to the joining portion of the steel material 510 is employed, more excellent workability can be obtained (Figs. 10 to 13).

Even in this case, when the H beam is applied to the steel material 510 and the provisional member 530 such as styrofoam is provided on the flange surface of the H beam, more excellent workability can be obtained.

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.

100: reinforced wall member 108: steel support member
108a: transverse bonding portion 108b: longitudinal bonding portion
500: Concrete pile 510: Steel
520: Bracket 530: Temporary member

Claims (9)

Installing a reinforced wall (100) to a predetermined depth in the ground along a tunnel excavation direction so as to be adjacent to at least one side wall of the excavation tunnel;
Drilling a unit section tunnel in the ground along the tunnel excavation direction;
Installing a steel material support (108) for reinforcing the ceiling of the unit section tunnel excavation part;
And a steel slab joining step of joining the reinforcing wall body (100) and the steel slab (108), the method comprising:
In the reinforcing wall installing step,
Forming a reinforcing wall body (100) by installing a plurality of concrete piles (500) in which the steel material (510) is inserted in a vertical part along a vertical direction,
The method of claim 1,
Removing a portion of the surface of the reinforced wall (100) to expose an engaging portion of the steel material (510);
Joining the steel support material (108) to the joining portion of the steel material (510);
Wherein the reinforcing wall is formed of a reinforcing material. The method according to claim 1,
Wherein the steel material (510) is an H beam, and a flange surface of the H beam is inserted into the concrete pile (500) so as to engage with the steel support material (108). The method according to claim 1,
Wherein the steel material (510) is inserted into the concrete pile (500) so as to be sloped inside the concrete pile (500). The method according to claim 1,
In the reinforcing wall installing step,
Forming a perforation hole in the ground and inserting the steel material (510);
Placing the concrete against the perforation hole;
Wherein the reinforcing wall is formed of a reinforcing material. The method according to claim 1,
In the reinforcing wall installing step,
Producing a precast pile in which the steel material (510) is inserted in a deep portion along a vertical direction;
Inserting the precast pile into the ground;
Wherein the reinforcing wall is formed of a reinforcing material. The method according to claim 1,
The steel material support (108) has an arcuate structure,
The ends of the steel support members 108 are flattened along the transverse direction to form the transverse joints 108a,
Wherein the transverse joint portion (108a) of the steel support (108) is coupled to the joint portion of the steel (510). The method according to claim 1,
The steel material support (108) has an arcuate structure,
The end portion of the steel support member 108 is formed to be flat along the longitudinal direction to form the longitudinally joined portion 108b,
A bracket 520 is coupled to a joint portion of the steel material 510,
Wherein the longitudinal joints (108b) of the steel support (108) are coupled to the brackets (520). 8. The method according to any one of claims 1 to 7,
In the reinforcing wall installing step,
A temporary member 530 made of a material easily detachable is installed in the joint portion of the steel material 510 and a large number of concrete piles 500 having the steel material 510 inserted in the center portion along the vertical direction are opened, And forming the reinforced wall (100) by installing the reinforcement wall (100)
The method of claim 1,
Removing the provisional member (530) from the reinforced wall (100) to expose an engaging portion of the steel material (510);
Joining the steel support material (108) to the joining portion of the steel material (510);
Wherein the reinforcing wall is formed of a reinforcing material. 9. The method of claim 8,
The steel material 510 is an H beam,
The temporary member 530 is made of styrofoam,
Wherein the styrofoam is installed on a flange surface of the H beam.
KR1020150088198A 2015-06-22 2015-06-22 Tunnel construction method with support walls KR20170000008A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110043269A (en) * 2019-05-05 2019-07-23 中交第三航务工程局有限公司 A kind of excavation construction process of freeway tunnel barrel
CN113153311A (en) * 2021-03-26 2021-07-23 北京城建设计发展集团股份有限公司 Tunnel excavation construction method suitable for soil-rock composite stratum

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110043269A (en) * 2019-05-05 2019-07-23 中交第三航务工程局有限公司 A kind of excavation construction process of freeway tunnel barrel
CN110043269B (en) * 2019-05-05 2020-07-03 中交第三航务工程局有限公司 Excavation construction process for tunnel body of highway tunnel
CN113153311A (en) * 2021-03-26 2021-07-23 北京城建设计发展集团股份有限公司 Tunnel excavation construction method suitable for soil-rock composite stratum
CN113153311B (en) * 2021-03-26 2022-09-16 北京城建设计发展集团股份有限公司 Tunnel excavation construction method suitable for soil-rock composite stratum

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