JP3865276B2 - Resin-coated synthetic segment with drainage function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin-coated synthetic segment in a shield tunnel, and more particularly to a resin-coated synthetic segment having a drainage function.
[0002]
[Prior art]
In recent years, the shield construction method has been desired to be economical, and “application of a tunnel that omits secondary lining” is attracting attention as one effective cost reduction measure. Omitting the secondary lining of shield tunnels has already been used in power and gas tunnels and subways, but omitting secondary lining in severe corrosive environments such as sewer pipes is a viewpoint of ensuring durability. The secondary lining made of concrete has generally been applied inside the primary lining.
[0003]
In response to this problem, by covering the primary lining segment with a durable resin, etc., it becomes possible to omit the secondary lining of the shield tunnel even under severe environmental conditions. The technology has been developed and implemented as a segment.
[0004]
[Problems to be solved by the invention]
This resin-coated synthetic segment is excellent in terms of durability, and in the same way as a normal segment, a water-proof sealing material is interposed on the joint surface, and a waterproof layer has been proposed. Drainage measures at high external water pressure were not taken. This means that when there is a crack in the segment or water leakage with a high water pressure from the outside of the tunnel along the joint surface, the adhesion between the segment and the coating resin is cut and the function of the tunnel is hindered.
[0005]
Accordingly, an object of the present invention is to provide a resin-coated synthetic segment in which a drainage countermeasure is taken in the resin-coated synthetic segment.
[0006]
[Means for Solving the Problems]
According to the present invention, in the resin-coated synthetic segment in which the synthetic resin coating 2 is provided on the inner side of the segment that is the primary lining material of the shield tunnel, a plurality of the segments 1 and the synthetic resin coating 2 are arranged in the tunnel axis direction. The drain members 3A and 3B are provided on the ring joint joint in the circumferential direction between the adjacent segments 1 and 1 and the segment joint joint in the tunnel axial direction, respectively.
[0007]
Moreover, according to this invention, the drain pipe 4 which drains the water collected with the drain materials 3, 3A, 3B to a tunnel axial direction is provided.
Furthermore, according to this invention, the said drain pipe 4 is provided in the invert concrete part 5, the protective sheet 10 is covered, and concrete is laid.
[0008]
According to the present invention, inside the resin coating 2, one end of the sheet-like drain material 9 is connected to the drain pipe 4 and the other end is connected to the drain material 3B provided at the segment joint joint in the tunnel axis direction .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
First, FIG. 23 shows an example in which drainage countermeasures are taken against intrusion of outside water in a conventional shield tunnel, and a concrete secondary lining 22 is applied to the inside of the segment 21 that is a primary lining material. A waterproof sheet 23 is interposed between the primary lining 21 and the secondary lining 22. A drain pipe 24 is provided inside the secondary lining 22. The code | symbol 25 shows invert concrete and the arrow has shown the direction through which water flows.
[0010]
FIG. 1 shows a basic configuration of the present invention, in which a resin coating 2 is applied to the inside of a segment 1 that is a primary lining material. In the illustrated example, a segment 1 and a resin coating 2 are provided on the resin coating 2 side of the segment 1. A string-shaped drain material 3 which will be described later is interposed therebetween. The invert concrete part 5 is provided with a drain pipe 4 on the inner side of the tunnel of the resin coating 2 and covered with a protective sheet 10 to place concrete. Arrows indicate the direction of water flow.
[0011]
2 and 3 show a resin-coated synthetic segment S having a drainage function according to an embodiment of the present invention.
[0012]
In FIG. 3, the range of the arrow A is a ring joint, and the groove is closed by a long cap-like object such as caulk or plastic. Moreover, in FIG. 2, 5 is invert concrete.
[0013]
FIG. 4 shows the arrangement of the drain material 3 viewed from the inside of the tunnel, and the drain material 3 is provided on the back surface of the resin coating 2 in the tunnel axial direction. Further, a drain material is also provided at the joint joint between the adjacent segments 1, 1, and the drain material 3 A is provided at the ring joint joint in the circumferential direction, and the drain material 3 B is provided at the segment joint joint in the tunnel axis direction. Is provided.
[0014]
FIG. 5 and FIG. 6 show a portion (cross section in the tunnel axis direction) of FIG. 2, FIG. 4 shows a post-installation type, and FIG. 5 shows a pre-installation type.
[0015]
In the case of the post-installation type, as shown in FIG. 7, the segment is manufactured until the resin coating 2 is applied with the drain material 3 interposed inside the segment 1 as the primary lining material. And as shown in FIG. 5, the drain material 3A is put in a joint part, and the caulking material 6 is packed. The water-stop seal material 7 is interposed at the joint.
[0016]
In the case of the pre-installation type, as shown in FIG. 8, when the segment is manufactured, the resin coating 2 is applied to the inside of the segment 1, which is the primary lining material, with the drain material 3 interposed, and the drain seal material 3A is attached to the joint. Keep it. Then, as shown in FIG. 6, the caulking material 6 is packed in the joint portion.
[0017]
FIG. 9 shows a portion b of FIG. 2, and a sheet-like drain material 9 is provided inside the resin coating 2 with one end connected to the drain pipe 4 and the other end connected to the drain material 3B .
[0018]
FIG. 10 shows a portion c of FIG. 9, and a drain material 3 </ b> B and a water-stop seal material 7 are interposed in the segment 1 and 1 joint portions.
[0019]
The drain pipe 4 drains the water collected by the drain materials 3, 3A, 3B in the tunnel axial direction, and has a porous cylindrical shape such as the fiber type shown in FIG. 11 or the hard type with holes shown in FIG. Then, a material that can withstand the casting pressure of the invert concrete 5 is used.
[0020]
Prior to placing the invert concrete 5, the drain material 9 and the drain pipe 4 are covered with a protective sheet 10 having a waterproof property so as not to be clogged by the concrete gutter, and the edge is covered with the resin coating 2 of the segment 1. Adhere closely. Note that the protective sheet 10 may not be used as long as the lane material 9, the drain pipe 4, and the joint water guide portion of both are not clogged.
[0021]
FIGS. 13 to 19 show a method for producing a resin-coated synthetic segment having a drainage function. Among them, FIGS. 13 to 16 show a resin spraying and coating type, and FIGS. 17 to 19 are resin panels. The formula is shown.
[0022]
In the case of the resin spraying and coating type, in FIG. 13, the reinforcing steel basket 12 is installed on the mold 11 having the convex portions 11 a that form the grooves for installing the drain material, and the concrete 13 is placed.
[0023]
As shown in FIG. 14, the drain material 3 is installed in the groove 1a after demolding and training. Then, the protective sheet 10 is put on as shown in FIG. 15, and then the coating resin 2 is sprayed by the sprayer 14 as shown in FIG. Instead of spraying, a resin may be applied.
[0024]
In the case of the resin panel type, the resin frame 15 shown in FIG. 17 is manufactured, and as shown in FIG. 18, the resin frame 15 and the drain material 3 are installed on the mold 11, covered with the protective sheet 10, and the reinforcing steel basket 12 is attached. Install and cast concrete 13. Then, as shown in FIG. 19, demolding and training are performed.
[0025]
In addition to the above-mentioned function, the protective sheet 10 can also be collected when the crack is generated in the RC segment 1 and the protective sheet 10 is also torn and water leakage from the outside of the tunnel that has entered along the crack is collected by the drain material 3. Shall. The protective sheet 10 is preferably made of a material that is impermeable to water, such as paraffin paper, and that easily breaks against the tensile force associated with cracks. The protective sheet 10 may be omitted by performing a special coating process on the drain material 3 that does not cause clogging with mortar.
[0026]
Further, instead of spraying or applying the coating resin 2 shown in FIG. 16, a thin film sheet 2 having high durability such as water-stopping or chemical resistance may be pasted with an adhesive d as shown in FIG. . In this case, the segment 1 is manufactured by a mold as usual, the sheet 2 is pasted, and it is like an iron, and the adhesive d inside the sheet is melted and fixed. Or if the sheet | seat 2 which consists of the water stop layer e and the contact bonding layer f is used so that a cross section may be shown in FIG. 21, it is not necessary to apply | coat an adhesive agent.
[0027]
FIG. 22 shows an example of a block constituting the resin-coated synthetic segment. The drain resin 3 is provided inside the segment 1 and the coating resin 2 is applied. Further, the drain materials 3A, 3B and A water stop seal 7 is interposed. Reference numeral 8 denotes a ring joint pin. The application of this drainage function does not depend on the segment joint type.
[0028]
【The invention's effect】
The present invention provides a resin-coated synthetic segment in which a segment that is a primary lining material of a shield tunnel is covered with a synthetic resin, and a drain material is provided on the side of the segment that is a primary lining material that is covered with a synthetic resin. Therefore, the secondary lining of the shield tunnel can be omitted, the construction can be speeded up and the cost can be reduced, and the drain provided on the side covered with the synthetic resin of the segment that is the primary lining material Wastewater is drained by the material.
[Brief description of the drawings]
FIG. 1 is an end view of a basic structure of a resin-coated synthetic segment having a drainage function according to the present invention.
FIG. 2 is a perspective view of a resin-coated synthetic segment having a drainage function according to the present invention.
FIG. 3 is a front view of FIG. 2;
4 is a perspective view showing the arrangement of the drain material as viewed from the inside of the tunnel of FIG. 2. FIG.
FIG. 5 is a cross-sectional view of part a in FIG.
6 is a cross-sectional view of part a in FIG.
7 is a cross-sectional view of the segment shown in FIG.
8 is a cross-sectional view of the segment shown in FIG.
9 is a perspective view of part b in FIG. 2;
10 is a front view of part c in FIG. 9;
FIG. 11 is a perspective view showing another embodiment of the drain pipe.
FIG. 12 is a perspective view showing still another embodiment of the drain pipe.
FIG. 13 is an explanatory view of a manufacturing method by a spraying / coating method.
FIG. 14 is a perspective view of installing a drain material after demolding and training.
FIG. 15 is a perspective view of a state where a protective sheet is covered.
FIG. 16 is a perspective view of coating resin spraying.
FIG. 17 is a perspective view of a resin frame.
FIG. 18 is an explanatory view of a manufacturing method by a panel type.
FIG. 19 is a perspective view of a block during demolding / training.
FIG. 20 is a front view of a segment formed by a thin film sheet type coating.
FIG. 21 is a cross-sectional view of a thin film sheet.
FIG. 22 is a perspective view of a resin-coated synthetic segment block having a drainage function.
FIG. 23 is a perspective view of a block of a conventional segment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Segment 2 ... Coating resin 3, 3A, 3B ... (string shape) Drain material 4, 4A, 4B ... Drain pipe 5 ... Invert concrete 6 ... Caulking material 7 ... -Water seal material 8 ... Ring joint pin 9 ... (Sheet) Drain material 10 ... Protective sheet

Claims (4)

  In a resin-coated synthetic segment in which a synthetic resin coating (2) is applied to the inside of a segment (1) that is a primary lining material of a shield tunnel, a tunnel shaft is provided between the segment (1) and the synthetic resin coating (2). A plurality of drain materials (3) are provided in the direction, and drain materials (3A, 3B) are provided respectively in the ring joint joint in the circumferential direction between the adjacent segments (1, 1) and the segment joint joint in the tunnel axial direction. A resin-coated synthetic segment with a drainage function.   The resin-coated synthetic segment having a drainage function according to claim 1, further comprising a drain pipe (4) for draining water collected by the drain material (3, 3A, 3B) in the tunnel axial direction.   The resin-coated synthetic segment having a drainage function according to claim 2, wherein the drain pipe (4) is provided on the inverted concrete portion (5), and the concrete is placed by covering the protective sheet (10). One end of the sheet-like drain material (9) is connected to the drain pipe (4) inside the resin coating (2) and the other end is connected to the drain material (3B) provided at the segment joint joint in the tunnel axis direction . Item 4. A resin-coated synthetic segment having the drainage function according to Item 3.

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