JPH11173093A - Resin-coated composite segment provided with draining function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin-coated composite segment provided with a drainage means by providing a drain member at the side coated with a synthetic resin in the segment. SOLUTION: The inside of a segment 1 as a primary lining member is coated with resin 2 and string-shaped drain members 3 are interposed between the segment 1 and the coating resin 2. A drain pipe 4 is laid in the inner side of a tunnel of the coating resin 2, in an invert concrete part 5. And a protective sheet 10 is put thereon and then concrete is placed. In this way, the secondary lining can be omitted and the construction period and cost can be reduced. Water can be drained through the drain members.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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]

2. Description of the Related Art In recent years, there has been a demand for economical use of the shield method, and as one of effective cost reduction measures, "application of a tunnel with no secondary lining" has been receiving attention. Omission of secondary lining of shield tunnels has already been performed in power and gas tunnels and subways, but elimination of secondary lining in severe corrosive environments such as sewer pipes is a viewpoint of ensuring durability. And secondary concrete lining has been commonly applied inside the primary lining.

[0003] In order to solve this problem, by coating the segment, which is the primary lining, with a durable resin or the like, 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 coated synthetic segment.

[0004]

This resin-coated synthetic segment is excellent in terms of durability, and has a waterproof property by interposing a water-blocking seal material on the joint surface in the same manner as a normal segment. However, no drainage measures were taken especially at high external water pressure. This means that if there is cracks in the segments or water leakage from the outside of the tunnel along the joint surface with high water pressure, the adhesion between the segments and the coating resin is broken, and the function of the tunnel is impaired.

[0005] Accordingly, an object of the present invention is to provide a resin-coated synthetic segment in which drainage measures are taken in the resin-coated synthetic segment.

[0006]

According to the present invention, in a resin-coated synthetic segment in which a segment, which is a primary lining material of a shield tunnel, is coated with a synthetic resin, the synthetic resin of the segment, which is a primary lining material, is used. A resin-coated synthetic segment having a drainage function is provided by providing a drain material on the side covered by the resin.

The resin coating is performed by spraying or applying a resin, and the resin coating may be a resin panel. Alternatively, a thin sheet having high durability may be attached.

[0008] The secondary lining of the shield tunnel can be omitted,
Work can be speeded up and costs can be reduced. In addition, drainage is performed by the drain material provided on the side of the segment, which is the primary lining material, which is covered with the synthetic resin.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, FIG. 23 shows an example in which drainage measures against intrusion of outside water are taken in a conventional shield tunnel.
The secondary lining 22 made of concrete is given inside the segment 21 which is the primary lining material. Primary lining 2
A waterproof sheet 23 is interposed between the first lining 22 and the secondary lining 22. A drain pipe 24 is provided inside the secondary lining 22. Reference numeral 25 indicates inverted concrete, and an arrow indicates a direction in which water flows.

FIG. 1 shows the basic structure of the present invention, in which a resin coating 2 is applied to the inside of a segment 1 as a primary lining material. A string-shaped drain material 3 described later is interposed between the resin coating 2 and the resin coating 2. A drain pipe 4 is provided inside the tunnel of the resin coating 2 in the invert concrete section 5, and a protective sheet 10 is put thereon, and concrete is cast. Arrows indicate the direction of water flow.

FIGS. 2 and 3 show a resin-coated synthetic segment S having a drainage function according to an embodiment of the present invention.

In FIG. 3, the area indicated by the arrow A is a ring joint, which is closed by a long cap-like material such as caulking or plastic. In FIG. 2, reference numeral 5 denotes inverted concrete.

FIG. 4 shows the arrangement of the drain material 3 as viewed from the inside of the tunnel. The drain material 3 is provided on the back surface of the resin coating 2 in the axial direction of the tunnel. Also, a drain material is provided at a joint joint between the adjacent segments 1 and 1, and a drain material 3A is provided at a circumferential ring joint joint, and a drain material 3B is provided at a tunnel axial direction joint joint. Is provided.

FIGS. 5 and 6 show a section (section in the axial direction of the tunnel) of FIG. 2, FIG. 4 shows a post-installation type, and FIG. 5 shows a front installation type.

In the case of the post-processing type, as shown in FIG. 7, the segments are manufactured until the resin coating 2 is applied with the drain material 3 interposed inside the segments 1 as the primary lining material, as shown in FIG. Then, as shown in FIG. 5, the drain material 3A is put in the joint portion, and the caulking material 6 is packed. The waterproof sealing material 7 is interposed at the joint.

In the case of the front installation type, as shown in FIG. 8, during the production of the segment, a resin coating 2 is applied to the inside of the segment 1, which is the primary lining material, with a drain material 3 interposed therebetween, and a drain seal material is provided at the joint portion. 3A is attached. Then, as shown in FIG. 6, the caulking material 6 is packed in the joint portion.

FIG. 9 shows part b of FIG. 2, in which 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 3A.

FIG. 10 shows a portion c in FIG. 9, in which the drain pipe 3A and the water-stop sealing material 7 are interposed at the joints of the segments 1 and 1.

The drain pipe 4 has drain materials 3 and 3
A, 3B, which drains water collected in the axial direction of the tunnel, and is a porous cylindrical type such as a fiber type shown in FIG. 11 or a hard type with holes shown in FIG. Use something that can withstand.

Prior to placing the invert concrete 5, the drain material 9 and the drain pipe 4 are covered with a waterproof protective sheet 10 so as not to cause clogging due to the slag of the concrete. Adhere to coating 2. The protective sheet 10 need not be used as long as the lane material 9, the drain pipe 4, and the joint water-guiding portion do not cause clogging.

FIGS. 13 to 19 show a method of manufacturing a resin-coated synthetic segment having a drainage function.
16 shows a resin spraying and application type, and FIG.
19 show a resin panel type.

In the case of the resin spraying and coating method, as shown in FIG. 13, a steel cage 12 is placed on a mold 11 having a convex portion 11a forming a groove for drain material installation, and concrete 13 is cast.

As shown in FIG. 14, after demolding and training,
The drain material 3 is installed in a. Then, as shown in FIG. 15, cover the protective sheet 10, and then, as shown in FIG.
The coating resin 2 is sprayed by the spraying machine 14. A resin may be applied instead of spraying.

In the case of the resin panel type, a 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 and the protective sheet 10 is covered thereon. The car 12 is installed and the concrete 13 is poured. Then, as shown in FIG.

In addition, in addition to the above-described functions, the protection sheet 10 also breaks when the RC segment 1 is cracked, and the drainage material 3 leaks water from the outside of the tunnel that has entered along the crack. Water can be collected. As a material of the protective sheet 10, for example, a material that is impermeable to water, such as paraffin paper, and that easily breaks with a tensile force caused by cracking is preferable. In addition, drain material 3
In addition, the protective sheet 10 may be omitted by performing a special coating process that does not cause clogging with the mortar.

Also, instead of spraying or applying the coating resin 2 shown in FIG. 16, a thin film sheet 2 having high durability such as water stoppage or chemical resistance is attached with an adhesive d as shown in FIG. May be. In this case, the segment 1 is manufactured in the form frame as usual, the sheet 2 is attached, and the adhesive d on the inside of the sheet is melted out and fixed with an iron-like material. Alternatively, as shown in the cross section in FIG. 21, if the sheet 2 including the water blocking layer e and the adhesive layer f is used, it is not necessary to apply the adhesive.

FIG. 22 shows an example of a block constituting a resin-coated synthetic segment, in which a coating resin 2 is applied to the inside of a segment 1 with a drain material 3 interposed therebetween, and a drain material 3A is provided further to the outside of the segment 1. , 3B and the water stop seal 7 are interposed. Reference numeral 8 denotes a ring joint pin.
The application of this drainage function does not depend on the segment joint type.

[0028]

According to the present invention, there is provided a resin-coated synthetic segment in which a segment, which is a primary lining material of a shield tunnel, is coated with a synthetic resin. , The secondary lining of the shield tunnel can be omitted, the construction can be speeded up and the cost can be reduced, and the primary lining is covered with the synthetic resin of the segment. Drainage is provided by the drain material provided on the side.

[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;

FIG. 4 is a perspective view showing the arrangement of drain members as viewed from inside the tunnel of FIG. 2;

FIG. 5 is a sectional view of a section a in FIG.

FIG. 6 is a sectional view of a part a in FIG.

FIG. 7 is a sectional view when the segment of FIG. 5 is manufactured.

FIG. 8 is a sectional view of the segment shown in FIG. 6 when it is manufactured.

FIG. 9 is a perspective view of a portion b in FIG. 2;

FIG. 10 is a front view of a 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 showing a state in which a protective sheet is covered.

FIG. 16 is a perspective view of spraying a coating resin.

FIG. 17 is a perspective view of a resin frame.

FIG. 18 is an explanatory diagram of a panel-type manufacturing method.

FIG. 19 is a perspective view of a block during removal and training.

FIG. 20 is a front view of a segment formed by a thin film sheet type coating.

FIG. 21 is a sectional view of a thin film sheet.

FIG. 22 is a perspective view of a block of a resin-coated synthetic segment having a drainage function.

FIG. 23 is a perspective view of a block of a conventional segment.

[Description of Signs] 1 ... Segment 2 ... Coating resin 3,3A, 3B ... (String) Drain material 4,4A, 4B ... Drain pipe 5 ... Invert concrete 6 ... Caulking material 7 Water seal material 8 Ring joint pin 9 Drain material (sheet) 10 Protection sheet

Claims (4)

[Claims] In a resin-coated synthetic segment in which a segment, which is a primary lining material of a shield tunnel, is coated with a synthetic resin, a drain material is provided on a side of the segment, which is a primary lining material, coated with a synthetic resin. A resin-coated synthetic segment having a drainage function, characterized by being provided. 2. The resin-coated synthetic segment having a drainage function according to claim 1, wherein the resin coating is spraying or coating of a resin. 3. The resin-coated synthetic segment having a drainage function according to claim 1, wherein the resin coating is a resin panel. 4. The resin-coated synthetic segment having a drainage function according to claim 1, wherein the resin-coated synthetic segment is a highly durable thin film sheet to which a resin coating is attached.