KR101847356B1 - Half excavation cross roadway construction method - Google Patents

Abstract

The present invention relates to a method of constructing a cross roadway on a lower portion of a railroad. More specifically, the method of constructing a cross roadway on a lower portion of a railroad facilitates an operation of a train and is capable of securing roadbed stability and a support force. Square pipes for a gallery and a slab are used in a structure of the present invention, thereby reducing construction costs, shortening the construction period and constructing the height of a roadway higher. The method of constructing a half excavated cross roadway comprises the following steps of: installing a rail reinforcing beam; installing a guide rail for the gallery; installing the square pipe for a gallery; excavating a wall trench; constructing the wall trench; installing the square pipe for a slab; placing concrete in the square pipe for a slab; placing concrete in the square pipe for a gallery; and excavating a tunnel and installing a structure.

Description

[Background Art] [0002] Half excavation cross roadway construction method [

The present invention relates to a construction method for constructing a transverse roadway at the lower part of a railway line, in particular, it is possible to smoothly run a railway, secure a roadbed stability and a supportive force, And moreover, it is possible to shorten the air volume and to construct the height of the roadway at a higher height.

Background Art [0002] Non-detachable tunnel excavation methods for constructing tunnel structures underground while normally using ground structures such as railways, roads, bridges, rivers, and other social infrastructures are known. This is accomplished by pushing the gallery pipe according to the planned type / plane alignment and using the inner space of the gallery pipe, pushing the slab pipe perpendicular to the inside of the gallery pipe to form the upper slab and then digging the wall trench inside the gallery pipe , Reinforcing concrete is laid to form a ramen structure, excavation inside the tunnel and installation of a lower slab to complete the structure.

On the other hand, when the non-excavation method is applied to the transverse roadway passing the lower part of the railway track to the lowland deficit, it becomes difficult to satisfy the railroad bedrock settlement criterion (7 mm) due to the lack of the earthworm. In addition, in the non-adherent method, when a gravel and an unstratified layer are encountered during the propulsion of each pipe, the settlement or the uplift phenomenon of the ground can occur. Therefore, it is required to have a construction technology that is excellent in coping ability according to the site conditions and can secure the stability of the railway line when constructing the structure.

As a background of the present invention, Korean Patent Registration No. 10-1446014, a 'method of constructing a railway lower transverse structure using a double-sided semi-arched steel pipe loop' has been proposed. This is because the upper and lower sides are horizontally and semicircular arc-shaped steel pipes and H-shaped steel pipes are used, and the workability is good, and there is little relaxation to the surrounding ground and it is applicable to low soil degradation. However, since this background technique is a non-adherent type, it requires a propulsion device including the installation and propulsion frame of the pushing workbench to press-fit the semicircular arc type steel tube and the H-shaped steel tube, There is a limit to lowering the toe deficit because it is non-detachable.

Korean Patent Registration No. 10-1446014

The present invention can smooth the running of the railway, securing the stability of the roadbed and securing the support force, and the gallery and the slabs are used as the main structure to reduce the construction cost and shorten the air, The present invention is also directed to a method of constructing a semi-assembly crossing road.

(A) a railway rail rail reinforcing beam for preventing the rail from sagging in a work section after measuring the position of the work site on the rail is connected to the railroad tie, and Performing a trenching operation to a predetermined depth at a predetermined position at a lower portion of a line of a work section and installing a guide rail for a gallery on the bottom of the trench; (b) supporting each gallery for a gallery by a guide rail for a gallery, placing the gallery on the lower side of the rail, and backing up and compaction around the gallery for each gallery; (c) cutting a lower portion of each pipe for a gallery, excavating the lower portion of the cut portion, placing reinforcing bars in the formed wall trench, and then pouring concrete to construct a trench wall; (d) installing a slab-use pipe between the adjacent galleries for the adjacent galleries, cutting the pipe for each gallery, and communicating with the slab pipe; (e) placing reinforcing bars in each of the tubes for the slab and pouring concrete into the reinforcing bars; (f) arranging reinforcing bars in the respective pipes for the gallery and simultaneously connecting the reinforcing bars to the reinforcing bars exposed from the inside of the slabs to the respective observations for the gallery, and then pouring concrete into the gallery pipes; (g) excavating a section surrounded by a trench wall and slabs to form an internal tunnel, and then installing a structure and performing a finishing work.

Each of the segments is composed of a lower plate for a gallery, an upper plate for a gallery disposed on an upper portion of a lower plate for a gallery, a lower plate for a gallery, and a side plate for left and right galleries joined to the upper plate for a gallery. And a reinforcing frame formed by joining the H steel material in a square band shape at regular intervals to the square passage for the gallery.

Further, the gallery-use pipe is further provided with a guide protrusion for guiding when inserting a segment of the slab-use pipe into the one side surface.

Each of the segments is disposed at a predetermined interval between a bottom plate for a slab, an upper plate for a slab disposed on an upper portion of a bottom plate for four slabs, a bottom plate for a slab, and an upper plate for a slab, And a plurality of slab square passages which are made of diaphragms for the bonded slabs and pass through the slabs.

In addition, a plurality of slab square passages are provided with an upper vertical stiffening plate in contact with the slab upper plate, an upper horizontal stiffening plate in contact with the lower surface of the upper vertical stiffening plate and a slab diaphragm, an upper horizontal stiffening plate, And a reinforcing rib which is provided at the other end of the reinforcing rib.

In addition, a plurality of guide rails for slabs may be further provided to support each segment of the slab pipe on the floor installed in the step (d).

According to the method of constructing the semi-adherent transverse road of the present invention, it is possible to quickly open the lower part of the railway line and the installation of each of the gallery pipes and the slab pipes in the nighttime, thereby facilitating the operation of the railway, .

Also, it is possible to secure the support force through the gallery pipes, the slab pipes and the trench walls, and the galleries and slab pipes can be used as the structure to reduce the construction cost and shorten the air.

In addition, since the toe limit is eliminated by the lower railway lowering method, the height of the roadway can be made higher.

In addition, there is no fear of encountering gravel and osseous beds due to the fact that the propulsion of each pipe is no longer necessary, thereby eliminating the possibility of sinking or rising phenomenon of the ground.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
FIGS. 1 to 11C relate to a method of constructing a semi-adherent transverse road according to an embodiment of the present invention,
1 (a) and 1 (b) are a cross-sectional view and a plan view in which a gallery pipe for a gallery is installed on the lower side of the line,
Figs. 2 (a), 2 (b) and 3 (c) are construction sequence diagrams for each gallery,
3A and 3B are a plan view and a cross-sectional view taken along line AA of a square tube for a gallery,
4 (a) and 4 (b) are a cross-sectional view and a plan view showing a trench excavation through a gallery pipe,
5 is a constructional view of the trench wall,
6 (a) and 6 (b) are a horizontal sectional view and a plan view, respectively, showing the installed state of the slab-
7 is a cross-sectional view showing a state in which concrete is poured into each slab-use pipe,
8 is a cross-sectional view showing a state in which concrete is poured into each of the gallery pipes,
9 (a) and 9 (b) are cross-sectional views showing the first tunnel excavation and additional construction of the structure,
10 is a cross-sectional view showing a second tunnel excavation and further construction of the structure,
11A, 11B, and 11C are a plan view, a BB sectional view, and a CC sectional view of a square pipe for a slab.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

Railway track Rail reinforcing beam  install

First, as shown in FIG. 2, after locating the work site on the line 10, a railway rail rail reinforcing beam 12 is installed as shown in FIG. 2 (a) in order to prevent the rail 10 from sagging during a work section do. The rail reinforcing beam 12 may be made by placing one or more H-shaped steels in the working area of the railway tie railroad tie 13 and connecting both ends of the rail reinforcing beam 12 to the nearby railroad tie 13. It is preferable that the installation work of the rail reinforcing beam 12 is performed at a nighttime when there is no railway operation.

Installation of guide rails for galleries

Then, as shown in Fig. 2 (A), a trench is formed at a predetermined depth at a predetermined position on the lower portion of the line of the work section, and a plurality of gallery guide rails 16 Install it. The guide rail 16 for the gallery is made of H-shaped steel but is not limited to this cross-sectional shape. The wave group is made deeper than the height of the gallery tube 20 to be described later.

At this time, the guide rail 16 for the gallery can be combined with the mortar 17 filled up to the height of the gallery guide rail 16 at the bottom of the tearable trough 14.

Here, it is preferable that the terra cotta work and the installation work of the gallery guide rail 16 are performed at night without the railway running.

For Gallery Each pipe (20) Installation

Next, as shown in Fig. 2 (B), the gallery tube 20 is supported by the gallery guide rail 16 and positioned on the lower side of the line 10, Back and compaction of the periphery of each pipe 20 is performed. Here, it is preferable that the installation of the gallery pipes 20, the backfilling and the compaction are performed at night without the railroad operation. Accordingly, a plurality of the gallery tubes 20 may be provided corresponding to the trench walls to be described later with reference to FIG.

The gallery pipe 20 may be composed of a plurality of segments. In the present embodiment, three segments are joined to constitute the gallery pipe 20, but the present invention is not limited to this number. 3A and 3B, each segment of the gallery tube 20 includes a lower plate 201 for a gallery, an upper plate 202 for a gallery disposed above the lower plate 201 for a gallery, a lower plate 201 for a gallery, And a square passage 205 for the gallery which is made of left and right gallery side plates 203 and 204 joined to the upper plate 202 for the gallery and penetrated to the inside, and the H steel material is formed in the square passage 205 at regular intervals A reinforcing frame 206 may be formed. The square passage 205 for the gallery provides sufficient work passageways for the operator to enter before pouring the concrete.

On the other hand, the gallery pipe 20 may further include a guide protrusion 20a for guiding each segment of the slab pipe 40 to the side as shown in Fig.

Here, in order to suppress the deflection of the line 10, the installation of the gallery pipe 20 can be carried out by alternating left and right on the basis of the center of the work section as shown in FIG. For example, as in the present embodiment, the center of the work section is set to ①, then to ② and ③ to the left and right of ①, then to ④ between ② and ③, then to ⑤ between ① and ③, (20) can be installed.

Wall Trench  Excavation

Then, as shown in FIG. 4, a lower portion of the gallery pipe 20 is cut, and a well-known PC panel and a support jack are installed under the cut portion to excavate the wall panel trench 15. The depth of excavation should be greater than the height of the crossing road. At this time, the junction between the PC panels can be waterproofed by joining ordinary sheet waterproofing.

Trench  Construction of wall

Then, as shown in FIG. 5, reinforcing bars are installed in the wall trenches 15, and concrete is installed to construct the trench walls 30. Reinforcing connections can be made using conventional reinforcing couplers. At this time, a part of the reinforcing bars laid on the wall trench 15 is exposed inside the gallery pipe 20. Therefore, the reinforcing bars disposed in the gallery tubes 20 and the reinforcing bars disposed in the trenches 15 can be connected to each other through the ordinary reinforcing couplers.

For slab Each  install

Next, as shown in Fig. 6, the slab angular tubes 40 are installed after being installed between the neighboring gallery angular tubes 20 and 20. By using the opening method, the installation time of the gallery tube 20 can be shortened compared with the method of driving the gallery tube 20 through the propeller (hydraulic jack) in the gallery tube 20, There is no need to worry about encountering gravel or any other seats.

At this time, the slab pipe 40 may be composed of a plurality of segments. In the present embodiment, three segments are used. However, the number of segments is not limited to three. 11A to 11B, each segment includes a slab bottom plate 401, a slab top plate 402 disposed on the top of the slab bottom plate 401, a slab bottom plate 401 disposed between the slab bottom plate 401 and the slab top plate 402 And a plurality of square passages 404 for slabs, which are made of diaphragms 403 for slabs vertically joined to each other at regular intervals. The square passage 404 for the slab is utilized as a reinforcing root and a filling space for concrete.

A plurality of slab square passages 404 are formed in the upper vertical stiffening plate 411 in contact with the slab upper plate 402 and the upper vertical stiffening plate 411 in contact with the lower surface of the upper vertical stiffening plate 411, A horizontal reinforcing plate 412, an upper horizontal reinforcing plate 412 and a reinforcing rib 413 provided in contact with the side slab diaphragm 403 may be further provided. In the case of such a reinforcing structure, the slab-use pipe 40 can have a relatively wide width and length, thereby reducing the number of installation in the present structure.

As shown in FIG. 6, a plurality of guide rails 45 for slabs may be further installed to support each segment of the slab-use pipe 40 on the floor installed before the installation of the slab pipe 40. The slab guide rail 45 may be combined with the mortar filled in the installed floor.

After the installation of the slab pipe 40, cutting operation is performed from the gallery pipe 20 toward the slab pipe 40 so as to form the connection pipe with the slab pipe 40. Thereby, the square passage 404 for slab is communicated with the gallery tube 20.

Therefore, the reinforcing bars laid on the slab-use pipes 40 and the reinforcing bars laid on the gallery pipes 20 can be connected to each other, and the concrete paved on the slab pipes 40 and the pipes 20 for the gallery The concrete can be composited so that the structure can have a ramen structure.

For slab Each hall  Concrete pouring

Then, as shown in FIG. 7, a reinforcing bar is placed in the slab-use pipe 40, and an unillustrated concrete pouring pipe and a grouting pipe are installed, and concrete is installed to construct the upper slab. At this time, the concrete is filled through the pipe for pouring the concrete, and the additional mortar is injected into the grouting pipe at the portion where the concrete is not filled.

For Gallery Each hall  Concrete pouring

Then, as shown in Fig. 8, reinforcing bars are laid in the gallery pipes 20 and concrete is laid. At this time, the reinforcing bars in the gallery tubes 20 are connected to the reinforcing bars in the slabs 40. A conventional reinforcing coupler can be used for the connection method. Therefore, the concrete in the gallery pipe 20 is combined with the concrete in the slab pipe 40 to have an integral structure.

Therefore, the present structure is constituted by a ramen structure in which the trench wall 20, the concrete in the gallery pipe 20, and the concrete in the slab pipe 40 are rigidly joined to each other.

Tunnel excavation and structure installation

Next, as shown in FIG. 9 (A), a section enclosed by the trench wall 30 and the slab-use pipe 20 is excavated to form an internal tunnel 50, and a structure such as a floor slab 60 is installed , The finishing operation is performed sequentially as shown in Fig. In the case of having four excavation areas as in the present embodiment, excavation and structure installation can be divided into two parts, that is, the first part which is located on the right and the second part which is the center part.

As described above, in the method of constructing the semi-open crossing road of the present invention, the gallery pipe 20 is installed in an open type and the trench wall 20 is installed to secure the supporting force, and then the slab pipe 40 is installed After constructing the structure by pouring concrete, it is a method of constructing the structure by installing excavation inside the tunnel and installing the lower slab.

Therefore, since the lower portion of the line is opened to embed the gallery pipe 20 and the slab pipe 40, the stability of the road surface can be ensured and the advantage of utilizing the gallery pipe 20 and the slab pipe 40 as the present structure Since the slab pipe 40 is included in the present structure, the distance between the slab pipe 40 and the present structure is reduced.

In particular, traffic flows smoothly, such as railway operations above the work area, and there is no toffee restriction due to the application of the railway underpass construction method, and the vehicle limit of the structure can be improved from the present 4.2m to the maximum 4.8m, It is possible to reduce construction costs and shorten the construction time by using the gallery pipe 20 and the slab pipe 40 as the main structure. And the workability is improved due to the simultaneous operation at several places.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

12: Rail reinforcing beam
15: Wall trench
16: Guide rail for gallery
20: Each gallery
30: trench wall
40: Each pipe for slab
50: Internal tunnel

Claims (6)

(a) A railway rail rail reinforcing beam 12 for preventing sagging of the railway track 10 is connected to the railroad girder in the work section after the work site is measured on the railway 10, A step of forming a guide rail 16 for a gallery at the bottom of the tearable corrugation 14;
(b) supporting the gallery tube 20 on the guide rail 16 for the gallery to place it on the lower side of the line 10, then backing up and compaction around the gallery tube 20;
(c) a step of cutting the lower portion of the gallery-use pipe 20, excavating the lower portion of the cut-out portion, placing reinforcing bars in the formed wall trench 15 and then placing the concrete to construct the trench wall 30 ;
(20) and (20) of the adjacent galleries, and then a slab-use pipe (40) is installed, and the slabs are cut at the gallery pipes (20 and 20) Communicating;
(e) placing reinforcing bars in the slab-use pipes 40 and pouring concrete into them;
(f) After reinforcing bars are inserted into the gallery tubes 20, the reinforcing bars are exposed from the inside of the slabs 40 to the gallery tubes 20, and then the inside of the gallery tubes 20 Pouring concrete into the concrete;
(g) excavating a section surrounded by the trench wall 30 and the slab-use pipe 20 to form an internal tunnel 50, and then installing a structure and performing a finishing work A method of constructing a semi - The method according to claim 1,
The gallery pipe 20 is composed of a plurality of segments,
Each of the segments includes a lower plate 201 for a gallery, an upper plate 202 for a gallery disposed above the lower plate 201 for a gallery, a lower plate 201 for a gallery and side plates 203 and 204 for left and right galleries joined to the upper plate 202 for a gallery And a reinforcing frame 206 formed by joining the H steel materials in a rectangular band shape at regular intervals to the square passage 205 for the gallery. A method of constructing a semi - 3. The method of claim 2,
The method according to any one of claims 1 to 3, further comprising a guide step (20a) for guiding a segment of the slab pipe (40) at one side thereof into the gallery pipe (20). The method according to claim 1,
The slab-use pipe 40 is composed of a plurality of segments,
Each segment is disposed between the lower plate 401 for the slab, the upper plate 402 for slab and the upper plate 402 for slab, which are disposed on the upper part of the lower plate 401 for slab, And a plurality of slab square passages (404) made of a slab diaphragm (403) joined to the slabs (403) and passed through the slabs (403). 5. The method of claim 4,
A plurality of slab square passages 404 are provided with an upper vertical stiffening plate 411 which is in contact with the slab upper plate 402 and an upper horizontal stiffening plate which is in contact with the lower surface of the upper vertical stiffening plate 411 and the slab diaphragm 403, Further comprising a reinforcing rib (413) provided in contact with the plate (412), the upper horizontal reinforcing plate (412) and the partition plates (403) for both side slabs. The method according to claim 1,
Wherein a plurality of slab guide rails (45) are further provided to support each segment of the slab pipe (40) on the floor installed in the step (d).

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