JP2000034898A - Resin member for internal-surface resin coated segment, manufacture of internal-surface resin coated segment and shield tunnel constructed by internal-surface resin coated segment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin member for a internal-surface resin coated segment, by which necessary strength can be obtained even when the thickness of an internal-surface resin coated member is thinned while the internal-surface resin coated member can be manufactured by a mold at a low cost, the manufacture of the internal-surface resin coated segment and a shield tunnel constructed by the internal-surface resin coated segment. SOLUTION: In curved members, the curved members are curved along the circumferential direction so as to cover the internal surface side of the shield tunnel while a plurality of circumferential or axial ribs 12 are molded integrally on the external surface side so as to be continuously projected along the circumferential direction or axial direction of the shield tunnel. Since concrete is filled along the circumferential or axial ribs 12 when it is placed from the upper directions of the curved members at that time, the circumferential or axial ribs 12 are not a hindrance at the time of the filling of concrete.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin member for an inner resin-coated segment which is inexpensive, has excellent strength, and has high watertightness, a method for manufacturing an inner resin-coated segment using the resin member for an inner resin-coated segment, and The present invention relates to a shield tunnel constructed by the inner resin-coated segments.

In particular, the present invention comprises shield tunnels for rainwater, water and sewage, underground rivers, railroads, motorways, undersea tunnels, joint pits, etc., which require watertightness and corrosion resistance. , A resin member for an inner resin-coated segment for constructing a structure having a shape such as a multi-type or the like having a substantially circular shape or a substantially rectangular shape, and a method for producing the inner-surface resin-coated segment, and an inner-surface resin-coated segment It is about a shield tunnel constructed by.

[0003]

2. Description of the Related Art FIGS. 11A to 11C are views for explaining a resin member for a trapezoidal segment in a conventional example. FIG. 11A is a top view, and FIGS. It is the side view seen from the side. 11A to 11C, the inner surface resin coating member 111 has a curved bottom portion 11.
2, a ring-side long side surface 113 with which one ring contacts,
Grout material is injected into the gap between the ring-side short side surface 114 with which the other ring is in contact and the tunnel formed by the shield method after the tunnel is assembled and the substantially trapezoidal resin-coated segment. A grout material injection hole 115 to be inserted, an operation opening 116 for inserting or operating a bolt / nut to join the substantially trapezoidal resin-coated segments, and an inner resin coating member 111
And an anchor pin 117 provided on the bottom 112 to prevent separation from the filled concrete, and a ring side or a segment side to prevent separation between the inner resin coating member 111 and the filled concrete. And anchor ribs 118 and 119.

[0004] The inner resin coating member 111 is shown in FIG.
As can be seen from (c), a curved long side surface 113 serving as a joining wall and a short side surface 114 are provided, and a substantially U-shaped concave portion covering three surfaces is formed. Although not shown, the inner resin coating member 11 is not shown.
1 is filled with concrete to form a substantially trapezoidal resin-coated segment. For example, six such trapezoidal resin-coated segments are alternately joined in the circumferential direction while being alternately joined, and are also joined in the axial direction to form a shield tunnel.

Ring side long side surface 113, ring side short side surface 1
14 has a bolt hole 122 formed at the position of the operation opening 116 for joining the tunnel in the axial direction and the circumferential direction. An unillustrated placing frame and an outer concrete form are placed on the segment side surface 120 so as to form a recess for a sealing material and a bolt hole 122 when the concrete is filled.

The grout material injection hole 115 is provided at the center of the bottom 112 of the inner resin coating member 111, and becomes a through hole even after concrete is filled by inserting a short pipe. After the tunnel is formed, the grout material injection hole 115 is formed, for example, in a gap formed between a tunnel formed by a substantially trapezoidal resin-coated segment and a hole excavated by a shield method or the like. This is for injecting a material having good fluidity such as mortar or concrete milk to enhance the strength of the tunnel. The properties of the cement mortar must be good in fluidity and small in shrinkage during solidification.

[0007] The operation opening 116 is formed by connecting resin-coated segments provided with connection fittings such as a bolt box to each other by bolts.
The work for fixing with a nut is performed. The anchor pin 117 is for preventing the filled concrete and the inner resin covering member 111 from peeling off, and is not provided perpendicular to the curved bottom 112, and is used when the inner resin covering member 111 is produced. The directions are aligned in the direction in which the mold is removed so that the mold can be easily removed.

The anchor rib 118 is provided on the long side surface 1 on the ring side.
13 and the ring-side short side surface 114 and the bottom 112. The anchor rib 118 has, for example, a protrusion at the tip end, and the filled concrete shrinks, and the ring-side long side surface 113 and the ring-side short side surface 1
14 to prevent the formation of a gap.

[0009] The anchor rib 119 is an anchor rib 11
8, the inner resin coating member 1 on the segment side
11 for obtaining strength, and is integrally formed with the bottom 112. After a concrete outer form (not shown) is placed on the side on which the anchor rib 119 is formed, concrete is filled. After the concrete outer form is removed, the concrete is placed on the surface. It is exposed. A concave portion for a sealing material is formed on the exposed surface of the concrete. Further, each of the anchor pins 117, each of the anchor ribs 118 and 119, the long side surface 113 on the ring side, and the short side surface 114 on the ring side
It is not perpendicular to 2, but in the direction of pulling out the mold during molding. That is, since these are all oriented in the vertical direction, the forming die can be simplified, and the biting into the filled concrete is good.

[0010]

However, in the above conventional example, in order to integrally mold the inner resin coating member, the anchor pin and the anchor rib, it is necessary to pull out the mold in a certain direction. There was a limit, and there was a problem in the adhesion between the concrete and the inner surface resin-coated member. In order to improve the adhesion between the concrete and the inner resin coating member, there are swelled anchor pin tips, or helical grooves provided around the anchor pins, but these are expensive molds. is there. Therefore, since the anchor pin having the above-mentioned shape is attached to the inner resin coating member later, it takes time and effort to attach the pin, and as a result, it becomes expensive.

Further, the inner resin coating member has a large shape, and if the shape of the anchor pin or the anchor rib is complicated in order to improve the adhesion to concrete,
In addition, it became expensive. In addition, the inner resin-coated member is required to absorb the impact when casting concrete and to have a strength as a structural member with the enlargement of the tunnel, so that a thickness greater than water-tightness is required. , Was also the cause of expensive.

In order to solve the above-mentioned problems, the present invention can provide the required strength even if the thickness of the inner resin coating member is reduced, and can provide the inner resin coating member with an inexpensive mold. It is an object of the present invention to provide a resin member for an inner resin-coated segment, a method for producing the inner resin-coated segment, and a shield tunnel constructed by the inner resin-coated segment.

[0013]

Means for Solving the Problems (First invention) The resin member for the inner surface resin-coated segment of the first invention is obtained by joining curved segments in a circumferential direction and an axial direction.
It is used for an inner resin-coated segment for constructing a shield tunnel, a curved member that covers the inner surface of the segment and is curved along the circumferential direction, and an outer surface side of the curved member, along the circumferential or axial direction of the tunnel. A plurality of circumferentially or axially protruding ribs 12 are integrally formed from a reaction injection molding material mainly composed of a norbornene monomer and a metathesis catalyst system.

(Second Invention) A circumferential or axial rib 1 of the resin member for an inner resin-coated segment according to the second invention.
2 are provided with irregularities 21, 21 ', 22, 22', 23, 23 ', 2 for improving the adhesion to concrete.
, 24, 25, 25 '... Are provided.

(Third invention) A circumferential or axial rib 1 in the resin member for an inner resin-coated segment according to the third invention.
The two end portions are provided with end projecting portions 31 projecting in the axial direction or circumferential direction of the tunnel.

(Fourth invention) A circumferential or axial rib 1 in the resin member for an inner resin-coated segment according to the fourth invention.
2 is characterized in that a plurality of anchor pin mounting portions 42 are provided, and the anchor pins 41 are mounted on the anchor pin mounting portions 42.

(Fifth Invention) In the resin member for an inner resin-coated segment according to the fifth invention, a plurality of ribs provided so as to continuously protrude along the circumferential direction or the axial direction are provided.
It is characterized by being inclined to at least one side.

(Sixth Invention) A circumferential or axial rib 61 provided along the circumferential or axial direction of the tunnel in the resin member for the inner resin-coated segment of the sixth invention.
Are provided at right angles to the axial or circumferential ribs 62, and the height of the axial or circumferential ribs 62 is increased by the circumferential or axial ribs 61.
It is characterized in that they are provided in a lattice shape.

(Seventh Invention) A fixing means 81 insert-molded at the intersection of the lattice-like ribs in the resin member for the inner resin-coated segment of the seventh invention, and an anchor pin 82 fixed to the fixing means 81. It is characterized by having.

(Eighth Invention) A circumferential or axial rib 1 of the resin member for an inner resin-coated segment according to the eighth invention.
No. 2 is characterized in that it has a height as a spacer on which the reinforcing bar is placed and a strength.

(Ninth Invention) The shape of the inner resin coating member in the resin member for the inner resin coating segment of the ninth invention is as follows.
It is one of a square, a rectangle, a trapezoid, and a hexagon.

(Tenth Invention) A method of manufacturing an inner resin-coated segment according to a tenth invention is directed to a curved member which covers the inner surface of the segment and is curved along the circumferential direction, and the outer surface of the curved member has at least the circumference of the tunnel. A plurality of circumferential or axial ribs continuously projecting along the direction or the axial direction integrate the resin member for the inner resin-coated segment with a reaction injection molding material mainly composed of a norbornene monomer and a metathesis catalyst system. From the step of molding, the step of placing the resin member for the inner surface resin-coated segment in the segment mold and the step of placing the reinforcing bar and injecting concrete, and the step of taking out the segment from the concrete mold after curing the concrete. It is characterized by becoming.

(Eleventh invention) A method of manufacturing an inner resin-coated segment according to an eleventh invention is directed to a curved member which covers the inner surface of the segment and is curved along the circumferential direction, and the outer surface of the curved member has at least the circumference of the tunnel. A plurality of circumferential or axial ribs continuously projecting along the direction or the axial direction integrate the resin member for the inner resin-coated segment with a reaction injection molding material mainly composed of a norbornene monomer and a metathesis catalyst system. Molding, applying a curable adhesive that can be adhered in water or in a wet state to the surface of the resin member for the inner resin-coated segment over the entire surface or partially, and segmenting the resin member for the inner resin-coated segment. Place the reinforcing cage in the forming die and inject concrete, and after curing the concrete, Characterized in that comprising the step of taking the segments.

(Twelfth Invention) The curable adhesive that can be bonded in water or in a wet state used in the method for producing an inner resin-coated segment of the twelfth invention is an epoxy resin or a urethane-acrylate resin. And

(Thirteenth Invention) In a shield tunnel according to a thirteenth invention, a plurality of inner resin-coated segments manufactured by the method of manufacturing an inner resin-coated segment according to the tenth to twelfth inventions are joined in a circumferential direction and an axial direction. Is done.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION (First Invention) The bending member of the first invention is curved along the circumferential direction so as to cover the inner surface side of the shield tunnel. The outer surface of the bending member is integrally formed so that a plurality of circumferential or axial ribs continuously project along the circumferential or axial direction of the shield tunnel. When the concrete is cast from above the curved member, the concrete is filled along the circumferential or axial ribs, so that the circumferential or axial ribs do not hinder the filling of the concrete. In particular, the present invention is disadvantageous in that concrete is filled in the circumferential direction or the axial direction. Therefore, if concrete is filled along the circumferential direction or the axial direction, concrete can be formed without spilling on the back side of the concrete. There is no.

The circumferential or axial rib can maintain the strength for producing the segment even if the thickness of the curved member is reduced, so that the amount of resin used can be reduced and the rib is inexpensive. can get. The bending member has a structure in which a bolt operating recess provided around the periphery and other necessary holes and the like can be simultaneously provided at the time of integral molding, and a one-touch or through bolt can be joined.

The above-mentioned curved member is made of a reaction injection molding material whose rib is mainly composed of a norbornene monomer and a metathesis catalyst system. The reaction injection molding material mainly composed of the norbornene-based monomer and the metathesis catalyst system,
It has excellent rigidity, impact resistance, elasticity, low viscosity, low water absorption, heat resistance, and thermosetting properties, so it can be used for reaction injection molding at low temperature and low pressure, and has strength and low water absorption. Suitable for tunnels or sewers.
In addition, the thermosetting resin member can be formed by a resin mold because reaction injection molding can be performed at a low temperature and a low pressure.

(Second Invention) The circumferential or axial rib of the second invention is provided with uneven portions on the side surface thereof for improving the adhesion to concrete. The concavo-convex portion is, for example, a concave or convex portion having a gentle slope, or a rough surface, a groove, or the like, and has such a size that does not interfere with concrete filling, and has an adhesive property with concrete. It is of good shape. Further, the uneven portion can be provided in one or both of the height direction and the length direction of the circumferential or axial rib.

(Third Invention) The circumferential or axial ribs of the third invention have axially or circumferentially projecting ends at both ends (circumferentially or axially joined portions of the segments). A partial protrusion is provided. This end projection is where the concrete is filled along the circumferential or axial ribs and finally abuts. The end protrusions can improve the strength of the bending member in the axial direction or the circumferential direction.

(Fourth Invention) The circumferential or axial rib of the fourth invention is provided with a plurality of anchor pin mounting portions at an upper portion thereof. The anchor pin is attached to the anchor pin attachment portion by, for example, screwing, fitting, or other means. If the bite between the concrete and the curved member is poor due to the size of the segment or the like, it can be compensated by increasing the number of anchor pins. The shape of the anchor pin can be such that a bulge portion is provided at the tip and a groove, unevenness, a spiral, a knurl, and the like are provided around the bulge portion, thereby improving the bite with concrete.

(Fifth Invention) A plurality of ribs according to the fifth invention are provided so as to continuously protrude along the circumferential direction or the axial direction of the tunnel, but at least one of the ribs (axial or circumferential direction) is provided. ). For ribs inclined in different directions, it is necessary to divide the molding die into a plurality. However, ribs that protrude continuously along the circumferential or axial direction of the tunnel and are inclined in the axial or circumferential direction not only do not hinder the filling of the concrete, but also further reduce the biting of the concrete. Be strong.

(Sixth invention) A sixth invention is directed to a circumferential or axial rib provided along the circumferential or axial direction of the tunnel,
Axial or circumferential ribs provided at right angles are provided in a grid pattern. The axial or circumferential ribs are lower than the circumferential or axial ribs so as to have a height and shape that do not hinder concrete filling. Moreover, since the ribs are provided in a lattice shape in the bending member, a sufficient strength can be obtained even if the thickness of the bending member is reduced.

(Seventh invention) In the seventh invention, a metal fixing means is insert-molded at the intersection of the grid-like ribs. The metal fixing means is, for example, a cap nut or a knurled one, and can be attached by screwing or fitting a metal or resin anchor pin. Further, since the metal fixing means can be easily inserted when a curved member is formed, it is suitable for producing a large inner surface resin-coated segment.

(Eighth Invention) In the eighth invention, what is originally used to reinforce a curved member is used as a spacer for placing a reinforcing bar cage. That is, by designing the circumferential or axial ribs in advance so as to have a height and strength as a spacer on which the reinforcing cage is placed, the two objects can be achieved at the same time.

(Ninth Invention) The shape of the inner resin coating member in the ninth invention can be selected from any of a square, a rectangle, a trapezoid, and a hexagon. According to the present invention, the most suitable one can be selected from the above depending on the shape, size, construction conditions and the like of the shield tunnel.

(Tenth invention) A tenth invention is a method for producing an inner resin-coated segment for constructing a shield tunnel. The resin member for the inner surface resin-coated segment is first provided with a curved member covering the inner surface of the segment and curved along the circumferential direction, and continuously projecting along at least the circumferential direction or the axial direction of the curved member. The obtained circumferential or axial ribs are integrally formed of a reaction injection molding material mainly composed of a norbornene-based monomer and a metathesis catalyst system.

Next, after the resin member for the inner resin-coated segment is mounted on the segment molding base, the side mold for concrete molding and the upper mold for concrete molding are arranged at predetermined positions. . Concrete is injected from the concrete injection hole of the upper mold for concrete molding. In the segment forming base, for example, concrete is driven along a rib provided in the circumferential direction or the axial direction while vibrating. After the concrete curing, the upper mold for concrete molding and the side mold for concrete molding are peeled and removed, and the inner resin-coated segment is completed.

(Eleventh Invention) The eleventh invention is the same as the tenth invention in that it is a method for manufacturing an inner resin-coated segment for constructing a shield tunnel. However, between the step of integrally molding the resin member for the inner resin-coated segment and the step of injecting concrete into the segment molding die, the hardening that can be adhered to the surface of the resin member for the inner resin-coated segment in water or in a wet state. The difference is that a step of applying the mold adhesive entirely or partially is inserted.

(Twelfth Invention) In the twelfth invention, the curable adhesive that can be bonded in water or in a wet state is selected from an epoxy resin and a urethane-acrylate resin. When concrete is cast in an uncured or semi-cured state, the curing adhesive promotes curing due to the reaction heat of the concrete and increases the adhesion between the resin member and the concrete. After the concrete is solidified, the resin-coated segment can be easily removed by applying a release agent to the inner surface of the mold.

(Thirteenth Invention) According to a thirteenth invention, a shield tunnel is constructed by joining the inner resin-coated segments produced according to the tenth invention to the twelfth invention in the circumferential direction and the axial direction. The joint between the inner resin-coated segments is joined, for example, with a bolt, a one-touch pin, a through bolt, or the like via a bolt operation unit such as a bolt box, and a sealing material is inserted, or mortar or the like is inserted into the joint recess. By injecting water, the watertightness can be further improved.

[0042]

[Embodiment] FIG. 1 shows a first embodiment of the present invention, in which an example in which a segment is provided with a right-angled rib in the circumferential direction is shown. AA sectional view,
(C) is a BB sectional view. Fig. 1 (a) to (c)
, The inner surface resin coating member 11 covers the inner surface side of a shield tunnel (not shown), protrudes toward the concrete side, and continuously protrudes along the circumferential direction. Is provided. Since the concrete is filled along the circumferential direction from the upper part of the formwork, the circumferential right-angled rib 12 does not become an obstacle for filling the concrete.

For example, the thickness of the inner resin coating member 11 is 5 mm, the height of the circumferential right-angle ribs 12 is 5 mm, and the interval between the circumferential right-angle ribs 12 is 20 mm or 40 mm.
In this case, an adhesion strength test between the inner resin coating member 11 and concrete was performed. Tensile speed is 50mm / min
However, better results were obtained than in the conventional example using the anchor pins and the anchor ribs.

The grout material injection hole 13 is provided substantially at the center of the inner resin coating member 11. Further, the inner resin coating member 11 is provided with a grout material injection hole 13 at the center thereof. Since the cylindrical projection 14 in the grout material injection hole 13 is continuous with the circumferentially right-angled rib 12, it is easy to integrally mold without obstructing the flow of the resin at the time of molding. Further, the grout material injection hole 13 can be provided with a tapered portion 15 so that grout material can be injected or a lid can be easily attached thereafter. Further, the inner resin coating member 11 is provided with tip inclined portions 16, 16 'at the tip of the joint.

FIGS. 2A to 2F show a second embodiment of the present invention, in which a plurality of right-angle ribs having irregularities in the circumferential direction of the segment are described. )
Is a partial top view thereof, and (f) is a sectional view taken along the line A'-A '.
2 (a) to 2 (f), the difference from the first embodiment is that irregularities are provided on the circumferential right-angled ribs 12 to improve the bite with concrete.
For example, the convex portion 2 composed of a gentle curve shown in FIG.
1, 21 ', a relatively angled convex portion 2 shown in FIG.
2, 22 ', with fine irregularities shown in FIG.
3, 23 ', with rough irregularities shown in FIG.
4 and 24 ', and those 25 and 25' having a series of gently inclined concave and convex portions shown in FIG.

Circumferential right angle ribs 1 having these shapes
No. 2 has a very strong bite with concrete. These uneven portions have grooves and other deformations other than those described above, and do not hinder the filling of the concrete, and it is sufficient that the adhesiveness to the concrete is good. In addition, the uneven portion can be provided in one or both of the height direction and the length direction of the circumferential right-angled rib 12.

FIG. 3 shows a third embodiment of the present invention, in which an end protruding portion is provided on a circumferentially right-angled rib of a segment. FIG. ) Is A "-
FIG. 3A is a cross-sectional view. In FIGS.
The circumferential right-angled rib 12 is provided with an end protruding portion 31 that protrudes in the axial direction of the tunnel at the joint of the segments in the circumferential direction. The concrete is a rib 12
And then comes into contact with the end protrusion 31. The end protruding portions 31 can improve the strength of the inner resin coating member 11 in the axial direction. FIG.
In (b), the end protruding portion 31 has the same height as the circumferential right-angled rib 12, but the height can be arbitrarily changed.

FIG. 4 shows a fourth embodiment of the present invention, in which an anchor pin is provided on a rib at a right angle in the circumferential direction of a segment. FIG. C-
It is C sectional drawing. 4 (a) and 4 (b), a plurality of anchor pin mounting portions 42 are provided above the circumferentially perpendicular ribs 12. And anchor pin 4
1 is attached to the anchor pin attaching portion 42. If the bite between the concrete and the inner resin coating member 11 is poor due to the size of the segment or the like, it can be compensated for by increasing the anchor pins 41. Regarding the shape of the anchor pin 41, any fixing means such as a groove, unevenness, spiral, knurl, etc. can be provided around the anchor pin 41, so that the anchor pin 41 can be better engaged with concrete.

FIG. 5 shows a fifth embodiment of the present invention, in which an example is shown in which a rib in the circumferential direction of a segment is inclined in the axial direction. ) Is C-
It is C sectional drawing. In FIGS. 5A and 5B, the circumferential right-angled ribs 12 provided so as to continuously protrude along the circumferential direction of the tunnel are provided in the axial direction as shown in FIG. For example, it is composed of an inclined rib 51 inclined in the left direction.

The inclined rib 51 may be of two types, that is, a reverse inclined rib 51 'inclined to the opposite side.
The ribs inclined in different directions can be forcibly pulled out when one of the inclination angles is small. However, since the above-mentioned rib having a large inclination angle makes it difficult to remove the mold, the mold is divided into a plurality of molds. The ribs inclined in the axial direction do not hinder the concrete because the concrete is filled in the circumferential direction, and also make the concrete bite more firmly.

FIG. 6 shows a sixth embodiment of the present invention, which illustrates a grid-like rib composed of a circumferentially right-angled rib and an axially right-angled rib. B) is E
It is -E sectional drawing. In FIGS. 6A and 6B,
A circumferential right-angle rib 61 provided along the circumferential direction of the tunnel and an axial right-angle rib 62 provided at right angles to the circumferential right-angle rib 61 are provided in a lattice shape. The height of the right-angle ribs 62 in the axial direction is lower than that of the right-angle ribs 61 in the circumferential direction, so that the concrete can be easily filled. The pitch of the circumferential right-angle rib 61 and the axial right-angle rib 62 can be arbitrarily changed according to the size of the segment. For example, the pitch between the circumferential right-angle rib 61 and the axial right-angle rib 62 is 10
0 mm to 200 mm and 40 mm. Also,
The heights of the circumferential right-angle rib 61 and the axial right-angle rib 62 can be reversed or almost the same.

The right-angle ribs 62 in the axial direction are tapered in a low trapezoidal shape so that the concrete can be easily filled. Since the right-angle ribs 61 and 62 are provided in a lattice shape, sufficient strength can be obtained even if the thickness of the inner resin coating member 11 is reduced. The axial right-angled ribs 62 shown in FIGS. 6 (a) and 6 (b) have a substantially square cross section, but have an angled shape so that concrete can be easily filled in the circumferential direction, or other shapes. Can be shaped.

FIG. 7 shows a seventh embodiment of the present invention, in which an anchor pin is provided on a grid-like rib composed of a circumferentially right-angled rib and an axially right-angled rib. (B) is an EE cross-sectional view, (c) is FF
It is sectional drawing. FIGS. 8A and 8B are diagrams for explaining an example of attaching an anchor pin in the seventh embodiment. In FIGS. 7A to 7C and FIGS. 8A and 8B, for example, at the intersection of the circumferential right-angle rib 61 and the axial right-angle rib 62, a cap nut 81 as a metal fixing means is provided. Are insert-molded.

The cap nut 81 is attached by screwing an anchor pin 82 having a screw on the base. The anchor pin 82 can improve biting with concrete by providing a spiral groove or a bulging portion at the end of the anchor pin 82 itself. The other metal fixing means has a knurled inside, for example, and is attached by fitting an anchor pin. Since the metal fixing means can be inserted at the same time as the molding of the inner resin coating member 11, it is suitable for producing a large segment.

The ribs 12 and 61 in the circumferential direction shown in FIGS. 1 to 7 are used not only to reinforce the inner resin coating member 11 but also to be used as spacers for placing the reinforcing bar cage. The circumferential right-angle ribs 12 and 61 are designed in advance so as to have a height and strength as a spacer for mounting a reinforcing bar (not shown).

The inner resin-coated member, the circumferential right-angle rib, and the axial right-angle rib are, for example, a reaction injection molding device (not shown) in which a reaction injection molding material mainly composed of a norbornene monomer and a metathesis catalyst system is used. It is produced by being injected into a mold. Reaction injection molding materials
For example, a first liquid composed of a norbornene-based monomer and a metathesis catalyst system and a second liquid composed of a norbornene-based monomer and an activator are prepared. Thereafter, the two stable liquids are mixed, for example, by a mixing head, and then injected at a low pressure and a low temperature into a mold of a reaction injection molding apparatus. In the present embodiment, since the reaction injection molding can be performed at a low pressure and a low temperature as described above, the mold may be the same as the outer mold for concrete.

For details of the above reaction injection molding material, see, for example, Japanese Patent Publication No. 3-28451 and Japanese Patent Publication No. 4-9812.
Japanese Patent Publication No. 6-13563, Japanese Patent Publication No. 6-24
No. 806 and JP-A-6-8273, and these materials can be used to manufacture the substantially trapezoidal resin-coated segment of this embodiment.

For example, a hardening adhesive (not shown) that can be adhered in water or in a wet state is applied to the surface of the inner resin coating member 11 in FIGS. 1 to 7.
Concrete is cast while the curable adhesive is in an uncured or semi-cured state. The curable adhesive,
While being hardened by the reaction heat of the concrete, the concrete also tightly adheres and solidifies. The inner resin-coated segment manufactured in this manner is removed from the mold after the concrete has solidified. The above-mentioned curable adhesive that can be adhered in water or in a wet state is made of an inner resin coating member 11.
Can be applied entirely or partially.

The curing adhesive that can be bonded in water or in a wet state is most preferably a urethane-acrylate resin. Further, the inner resin coating member 11 is at least one of a reaction injection molded product mainly composed of a norbornene-based monomer and a metathesis catalyst system, a fiber-reinforced plastic molded product composed of a sheet molding compound, and a molded product of a thermoplastic resin sheet. One is used.

Although the inner resin coating member 11 in FIGS. 1 to 7 has been described as a curved and substantially rectangular segment, it may be a square, a trapezoid, or a hexagon. Since the shape of the segment varies depending on the shape, size, construction conditions, and the like of the shield tunnel, the most suitable shape can be selected.

FIG. 9 is a diagram for explaining a step of producing the inner resin-coated segment of the present invention. In FIG. 9, the resin member for the inner resin-coated segment is formed by injecting a reaction injection molding material mainly composed of a norbornene-based monomer and a metathesis catalyst system into a mold so that the inner resin-coated member 11 and the rib in the circumferential direction are perpendicular to each other. 12, or an axial right-angle rib (not shown) is integrally formed.

Next, after the resin member for the inner resin-coated segment is placed on the base 91 for segment molding, the side molds 92, 92 'for concrete molding and the upper mold 93 for concrete molding are fixed. Placed in the position. Concrete is injected from the concrete injection hole 94 of the upper mold 93 for forming concrete.

The segment molding base 91 is, for example,
Due to the vibration, the concrete 101 is driven along the circumferential right-angled ribs 12 provided in the circumferential direction.
The inner resin coating member 11 is filled with the concrete 101 after the rebar or the connection fitting is inserted thereinto. When filling the concrete 101, the inner resin coating member 11 is placed on a vibrating table and vibrated, and is internally compacted with a rod-shaped vibrator or the like. .

After curing of the concrete, the upper mold 93 for concrete molding and the side mold 92 for concrete molding,
92 'is peeled off to complete the inner resin-coated segment. In addition, the side molds 92, 9 for concrete molding
2 'is provided with projections 95 and 95' for forming the joint concave portions and projections 96 and 96 'for the seal grooves.

FIG. 10 is a view for explaining a joint surface when the resin-coated segments of the present invention are joined. The resin-coated segment 1 and the resin-coated segment 1 ′ are, for example, bonded to respective concretes 101 and 101 ′ at a bonding surface 104. At this time, the inner resin coating member 11
Of the mortar injection hole 102 and the joint recess 103
It is formed in advance in a shape such that it can be formed. In addition, a sealing groove is provided on the joint surface 104, and watertightness is maintained by embedding a sealing material.

Therefore, for example, mortar is injected into the joint recess 103 from the mortar injection hole 102 to improve the watertightness of the joint surface 104. And the said joining surface 104 is provided in the circumferential direction and the axial direction of a tunnel, and a shield tunnel is constructed. The shield tunnel manufactured in this way is inexpensive with high watertightness.

Although the present embodiment has been described in detail, the present invention is not limited to this embodiment. Various design changes can be made without departing from the present invention described in the appended claims. In the present embodiment, the circumferential rib that continuously protrudes the resin member for the inner surface resin-coated segment along the circumferential direction of the tunnel is described. However, the axial rib that protrudes continuously along the axial direction of the tunnel is described. Can be provided. In the case of a lattice-shaped rib as shown in FIG. 6, when one is high, the other is low.
Further, it is convenient that the rib is formed in advance in a convenient shape when the resin member is removed from the mold.

Although the shape of the inner resin-coated segment of this embodiment is not particularly described, it can be trapezoidal, hexagonal, rectangular, tortoise-shaped, square, or other deformable. The inner resin-coated segment of this embodiment is a motorway, a railway, a sidewalk tunnel, a shield tunnel for rainwater,
Alternatively, it can be used for shield tunnels for sewers, sewers having a shape other than circular in cross section, waterworks, industrial waterworks, common wells, underground rivers, underground tanks, tanks or vessels installed on the ground, and the like.

In the examples, the reaction injection molding for producing the inner resin-coated segment and the method for producing reinforced concrete are not described in detail, but known or known means can be employed.

Although the joining of the inner resin-coated segments is not described in detail in this embodiment,
Other connection fittings, holding spacers, and the like can be used. In addition, the shape of the right-angled rib and the shape of the uneven part are
Modifications are possible if they meet the purpose of the invention.

[0071]

According to the present invention, since the inner resin-coated member and at least the circumferential or axial ribs are integrally formed from a reaction injection molding material mainly composed of a norbornene monomer and a metathesis catalyst system, the rigidity as a segment is improved. It has excellent impact resistance, elasticity, low viscosity, low water absorption, heat resistance, and thermosetting properties, so it can be used for reaction injection molding at low temperature and low pressure, and has strength and low water absorption for rainwater tunnels, or Suitable for sewerage.

According to the present invention, at least the circumferential or axial ribs provided on the inner resin-coated member can improve the biting with concrete and improve the strength as a curved member. Therefore, the present invention
By reducing the thickness of the inner resin-coated member, an inexpensive inner resin-coated segment can be obtained.

According to the present invention, it is possible to omit the secondary lining provided inside the shield tunnel by the inner resin coating member, and it has good chemical resistance and has a smooth surface, so that rainwater or sewage can be obtained. A rainwater or sewer shield tunnel having excellent hydraulic characteristics, such as an increased flow velocity, can be obtained.

According to the present invention, the concrete is cast in an uncured or semi-cured state with the curable adhesive that can be bonded in water or in a wet state, so that the adhesive can be cured by the reaction heat of the concrete. The adhesion between the adhesive and the concrete could be improved.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, in which a segment is provided with a right-angled rib in a circumferential direction, (a) is a partial top view thereof, and (b) is an AA cross section. Fig. (C) shows B-
It is B sectional drawing.

FIG. 2 illustrates an example of a plurality of right-angled ribs having irregularities in the circumferential direction of a segment according to a second embodiment of the present invention. (F) is an A′-A ′ cross-sectional view.

FIGS. 3A and 3B illustrate a third embodiment of the present invention, in which an end protruding portion is provided on a circumferentially right-angled rib of a segment, wherein FIG. It is A "-A" sectional drawing.

FIG. 4 is a view showing a fourth embodiment of the present invention, in which an anchor pin is provided on a rib at a right angle in a circumferential direction of a segment. It is C sectional drawing.

FIG. 5 is a view showing a fifth embodiment of the present invention, in which a circumferentially right-angle rib of a segment is inclined in the axial direction. It is CC sectional drawing.

6 (a) and 6 (b) illustrate a sixth embodiment of the present invention, which is a lattice-like rib composed of a circumferentially right-angled rib and an axially right-angled rib. FIG. Is an EE cross-sectional view.

FIG. 7 is a seventh embodiment of the present invention, in which an anchor pin is provided on a grid-like rib composed of a circumferentially-perpendicular rib and an axially-perpendicular rib, and FIG. (B) is an EE cross-sectional view, and (c) is an FF cross-sectional view.

FIGS. 8A and 8B are views for explaining an example of attaching an anchor pin in the seventh embodiment.

FIG. 9 is a view for explaining a step of producing an inner resin-coated segment of the present invention.

FIG. 10 is a view for explaining a bonding surface when the resin-coated segments of the present invention are bonded.

FIGS. 11A to 11C are views for explaining a trapezoidal segment resin member in a conventional example.
(A) is a top view, (B) and (C) are side views as viewed from a curved side.

[Explanation of symbols]

 1, 1 '... resin-coated segment 11 ... inner surface resin-coated member 12 ... circumferentially perpendicular rib 13 ... grout material injection hole 14 ... cylindrical protrusion 15 ... taper 16 , 16 '... tip inclined part 31 ... end protruding part 41, 82 ... anchor pin 42 ... anchor pin mounting part 51 ... inclined rib 51' ... reverse inclined rib 61 ...・ Rib at right angles in the circumferential direction 62 ・ ・ ・ Rib at right angles in the axial direction 81 ・ ・ ・ Cap nuts 91 ・ ・ ・ Bases for segment molding 92, 92 ′ ・ ・ ・ Side formwork for concrete molding 93 ・ ・ ・ For concrete molding Upper formwork 94 ··· Concrete injection holes 95, 95 '· · · Projections for forming joint recesses 96, 96' · · · Projections for seal grooves 101, 101 '... Concrete 102 ... Mortar injection holes 103 · ..Concave joints 104 ... bonding surface

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 000106726 C-I Kasei Co., Ltd. 1-18-1 Kyobashi, Chuo-ku, Tokyo (72) Inventor Masayoshi Nakagawa 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Takeshi (72) Inventor Masashi Yamamoto 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Kiyonari Nakura 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima (72) Inventor Hiroki Someya 1-12-1 Yurakucho, Chiyoda-ku, Tokyo Ishikawashima Construction Materials Industry Co., Ltd. (72) Inventor Tanaka Ishikawashima Building Materials Co., Ltd. (72) Inventor Yutaka Fujino 4-2-2 Shiba, Minato-ku, Tokyo Geostar Co., Ltd. (72) Inventor Akira Kase 4-2-2 Shiba, Minato-ku, Tokyo No. Geostar Co., Ltd. (72) Inventor Noriyuki Shima 1-18-1 Kyobashi, Chuo-ku, Tokyo C.I.Kasei Co., Ltd. (72) Inventor Hiroharu Sasayama 1-18-1 Kyobashi, Chuo-ku, Tokyo C.I. Inside (72) Inventor Takeo Arakida 1-18-1 Kyobashi, Chuo-ku, Tokyo C-I Kasei Corporation (72) Inventor Yuichi Masuda 1-1-18 Kyobashi, Chuo-ku, Tokyo C-I Kasei Corporation Inside

Claims (13)

[Claims] 1. A resin member for an inner resin coating segment in an inner resin coating segment for constructing a shield tunnel by joining curved segments in a circumferential direction and an axial direction, wherein the inner member covers the inner surface of the segment and extends along the circumferential direction. A plurality of circumferential or axial ribs continuously projecting along the circumferential or axial direction of the tunnel on the curved surface of the curved member and the outer surface side of the curved member form a norbornene-based monomer and a metathesis catalyst system. A resin member for an inner resin-coated segment, which is integrally formed from a reaction injection molding material as a main material. 2. The resin member for an inner surface resin-coated segment according to claim 1, wherein a concave / convex portion for improving adhesion to concrete is provided on a side face of the circumferential or axial rib. . 3. An end projection projecting in the axial or circumferential direction of the tunnel is provided at both ends of the circumferential or axial rib. 3. The resin member for an inner resin-coated segment according to item 2. 4. The method according to claim 1, wherein the circumferential or axial rib is provided with a plurality of anchor pin mounting portions, and the anchor pins are mounted on the anchor pin mounting portions. The resin member for an inner resin-coated segment according to any one of claims 3 to 3. 5. A plurality of ribs provided so as to continuously protrude along the circumferential direction or axial direction of the tunnel,
The resin member for an inner resin-coated segment according to any one of claims 1 to 4, wherein the resin member is inclined at least to one side. 6. A circumferential or axial rib provided along the circumferential or axial direction of the tunnel,
An axial or circumferential rib provided at a right angle is provided, and the height of the axial or circumferential rib is set lower than the circumferential or axial rib, and these are provided in a lattice shape. The resin member for an inner resin-coated segment according to claim 1, wherein the resin member is provided. 7. A fixing device according to claim 6, further comprising a fixing means insert-molded at an intersection of said lattice-shaped ribs, and an anchor pin fixed to said fixing means.
A resin member for an inner resin-coated segment as described in the above. 8. The inner resin according to claim 1, wherein the circumferential or axial rib has a height and strength as a spacer on which the reinforcing bar is mounted. Resin member for covering segment. 9. The inner resin coating according to claim 1, wherein the shape of the inner resin coating member is any one of a square, a rectangle, a trapezoid, and a hexagon. Resin member for segment. 10. A method for manufacturing an inner resin-coated segment for constructing a shield tunnel by joining curved segments in a circumferential direction and an axial direction, wherein the curved member covers an inner surface of the segment and curves along the circumferential direction. And, on the outer surface side of the curved member, a plurality of circumferential or axial ribs continuously projecting at least along the circumferential or axial direction of the tunnel are mainly composed of a norbornene-based monomer and a metathesis catalyst system. A step of integrally molding the resin member for the inner resin-coated segment with the reaction injection molding material, and a step of placing the reinforcing member cage while placing the resin member for the inner resin-coated segment on the segment mold, and pouring concrete. Removing the segment from the concrete mold after curing the concrete. Manufacturing method of the inner surface resin-coated segments. 11. A method of manufacturing an inner resin-coated segment for constructing a shield tunnel by joining curved segments in a circumferential direction and an axial direction, wherein the curved member covers an inner surface of the segment and curves along the circumferential direction. And, on the outer surface side of the curved member, a plurality of circumferential or axial ribs continuously projecting at least along the circumferential or axial direction of the tunnel are mainly composed of a norbornene-based monomer and a metathesis catalyst system. A step of integrally molding the resin member for the inner resin-coated segment with a reaction injection molding material; and applying a curable adhesive capable of bonding in water or in a wet state to the surface of the resin member for the inner resin-coated segment in whole or in part. And placing the resin member for the inner surface resin-coated segment on the segment mold and placing the reinforcing bar cage And a step of injecting concrete, and a step of taking out the segment from a concrete mold after curing of the concrete. 12. The method for producing an inner resin-coated segment according to claim 11, wherein the curable adhesive capable of bonding in water or in a wet state is an epoxy resin or a urethane-acrylate resin. 13. A shield tunnel constructed by joining a plurality of inner resin-coated segments produced by the method for producing an inner resin-coated segment according to claim 10 in a circumferential direction and an axial direction. .