JP3462068B2 - Segment joining device, segment and segment joining structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining device for joining segments used for constructing a tunnel or the like, a segment, and a joining structure of three segments.

[0002]

2. Description of the Related Art The applicant of the present invention previously developed a hexagonal segment shown in FIGS. 8 to 11 (Japanese Patent Application No. 8-2).
No. 38258. ) The hexagonal segment is fixed to the web 42a of the H-shaped steel 42 by fixing the joining metal fitting 41 in which the head portion 41b is formed on the outer end of the metal fitting body 41a to the corners of the two inclined joining surfaces Ka, Kb, A fitting portion 43b into which the head 41b of the joining metal fitting 41 is fitted is provided on the web 43a of the channel steel 43 provided with the side joining surfaces Ga and Gb, and one of the hexagonal segments S1 of the first sheet is provided. One slanted joint surface Ka of the second hexagonal segment S2 is butted to the slanted joint surface Kb, and the fitting portion 43b of the first hexagonal segment S1 is fitted to the joint fitting 41 of the second hexagonal segment S2. Head 4
1b is fitted and joined to each other, and the side of the third hexagonal segment S3 is joined to the side of the first hexagonal segment S1 and the second side of the hexagonal segment S1. Hexagonal segment S2 of the above fitting 41
The fitting portion 43b of the side joint surface Ga is fitted to the head 41b of the hexagonal segment and the one inclined joint surface Ka is butted against the other inclined joint surface Kb of the second hexagonal segment S2. S1, S2 and S3 can be joined together. The hexagonal segment is curved in an arc shape in a side view as shown in FIGS. 9 and 10.

With this new hexagonal segment, a strong joining force can be obtained, and for example, even if the tunnel constructed by the hexagonal segment is a channel, it can sufficiently withstand the water pressure from the center to the outside. .

[0004]

However, the head 41b of the male fitting 41 has the inclined joining surfaces Ka, K of the segments.
Since it largely protrudes at the corner of b, it is difficult to handle when carrying it, assembling it, etc., and it is difficult to handle.

The present invention, unlike a segment joining device having a head portion projecting from a segment, does not have a projecting portion projecting to the outside of the segment and facilitates various operations such as transportation of the segment and the segment joining device. An object of the present invention is to provide a segment to which the joining device is attached and a segment joining structure by the joining device.

[0006]

In order to achieve the above object, the invention according to claim 1 is such that a fitting hole opened on the side surface is connected to the inner depth of the insertion slit opened on the end surface and the side surface. The end joint fitting provided, the joint fitting for the right side in which the semi-cylindrical fitting portion opened to the side is continuously provided in the inner depth of the insertion step opened to the end face and the side, and the end face The left side joining metal fitting in which the semi-cylindrical fitting portion open to the side surface is continuously provided in the inner depth of the insertion step portion opened to the side surface, and the right side joining fitting and the left side joining fitting The fitting portion to be fitted between the facing semi-cylindrical fitting portions and the fitting portion to be fitted into the fitting hole of the end fitting metal fitting are the same as those of the right fitting fitting and the left fitting fitting. Connections provided at both ends of the insertion portion to be inserted between the insertion step portions facing each other and the insertion slit of the end joint fitting. Has a structure provided with the and ingredients.

According to the above-mentioned means, the joining device is provided between the right-side joining metal fitting and the left-side joining fitting of the two segments between the mutually facing insertion step portions and the end portion of the other one segment. While inserting the insertion portion into the insertion slit of the metal fitting, between the half-cylindrical fitting portions of the right side joining fitting and the left side joining fitting facing each other, and the fitting hole of the end joining fitting. Then, the fitting portions are fitted into the respective parts to finally join the three segments. Thus, the coupling is
Since it is a separate member from the end metal fittings and the both-side metal fittings attached to the segments, there is no obstruction during transportation or assembly of the segments.

In the above segment joining device, in the joining tool, two half-cylindrical portions forming one side surface of the fitting portion are provided at two ends of a connecting portion forming one side surface of the insertion portion. It can be constituted by a body and two insertion shafts which are inserted between the half-cylindrical portions of the two plate bodies facing each other in a cylindrical shape (claim 2). With this configuration, the manufacturing of the coupler is facilitated. In addition, it is preferable that the fitting portion of the connector according to claim 1 or the insertion shaft according to claim 2 is formed in a tapered shape (claim 3). In this case, fitting of the fitting portion and the insertion shaft becomes easy.

The invention according to claim 4 is the invention according to claims 1 to 3.
The joining metal fitting for an end of the joining device for a segment according to any one of claims 1 to 3 is provided substantially at the center of the end joining surface, and the joining fitting for a right side portion of the joining device for a segment is provided on the right side joining surface,
Further, the left side joining metal fitting is provided on each of the left side joining surfaces.

According to this means, neither the end joint fitting nor the both-side joint fitting protrudes outward from the segment, so that it is easy to handle and can be transported smoothly.

Further, in the invention according to claim 5, the three segments having substantially the same shape as described in claim 4 have the second segment in a part of one end joining surface of the first segment. Part of one end joint surface is brought into contact, one side joint surface of the third segment is brought into contact with one side joint surface of the first segment, and one end joint is made In the joining structure of the three segments provided by bringing a part of the surface into contact with the remaining part of the end joining surface of the second segment, the first segment and the third segment Of the right side joining metal fitting and the left side joining metal fitting, and the end joining metal fitting of the second segment described above, in the insertion step of the right side joining metal fitting and the left side joining metal fitting. Insert the insertion part into the space and the insertion slit of the end fitting The two fitting portions are connected to each other by the fittings fitted between the semi-cylindrical fitting portions of the right-side joining fitting and the left-hand joining fitting and the fitting holes of the end joining fitting. .

A connecting tool in which two fitting portions are fitted into the end fitting and the both-end fittings to join them together and to join the three segments together to one another,
Since it has been removed from the end fittings etc. until the final stage of joining, it does not interfere with the preliminary joining and abutting operation of the three segments, so the segment joining work can be performed quickly and accurately. it can.

In the above segment joining structure, a caulking agent previously put between the fitting hole of the end fitting and / or the semi-cylindrical fitting part of the right fitting and the left fitting. Can be configured to be extruded into a peripheral gap and hardened by fitting the coupling tool into them (claim 6). With this configuration, the liquid-tightness of the joint fitting portion is improved.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. 1 to 7 show an embodiment of the present invention, in which reference numeral 1 is an end fitting, 2 is a right fitting, and 3 is a left fitting.

The end fitting 1 has an end face 1a and a side face 1.
b, a fitting hole 1d having a circular cross section opened to the side surfaces 1b and 1b at the inner depth of the insertion slit 1c opened to the side.
In the case of the hexagonal segment Sa, the hexagonal segment Sa is attached to the inclined joint surfaces (end joint surfaces) Ka and Kb with their center lines aligned with the center line of the hexagonal segment Sa. In the case of the rectangular segment Sb, the end joint surface T
It is attached to the center of the so that its center line coincides with the center line of the rectangular segment Sb. The hexagonal segment Sa and the quadrangular segment Sb are curved in an arc shape like the segment of FIG.

The right side joining fitting 2 has an end face 2a and a side face 2.
2b on the inner back side of the insertion step portion 2c opened to b, 2b.
b, 2b, a semi-cylindrical fitting portion 2d having a semicircular cross-section opened in series is provided, and in any of the hexagonal segment Sa and the quadrangular segment Sb, the insertion step is formed on the side joint surface Gb. The part 2c and the semi-cylindrical fitting part 2d are attached to the outside.

Further, the left side joining fitting 3 is a semi-cylindrical cylinder having a semicircular cross section opened to the side surfaces 3b and 3b in the inner depth of the insertion step portion 3c opened to the end surface 3a and the side surfaces 3b and 3b. Side fitting surfaces G in both hexagonal segments Sa and quadrangular segments Sb.
It is attached to a with the insertion step portion 3c and the semi-cylindrical fitting portion 3d on the outside. The two side fittings 2, 3 are the same in shape except that the left-hand and right-hand attachments are opposite to each other.

The respective fittings 1, 2, 3 can be attached to the segments Sa, Sb by, for example, attaching to the base end portion or the inner surface.
As shown in FIG. 1, any one of the fixing lines 7, the fixing pins 8 and the fixing hooks 9, and in some cases, two or more kinds of them are fixed by welding or the like, and these are embedded in concrete so that the segment Sa, It is usual to attach the joining metal fittings 1, 2, and 3 to Sb. In addition to the above, in the case of the end fitting 1, it can be attached to the web 42a of the H-shaped steel 42 (FIG. 8) or a reinforcing bar (not shown) by welding or the like.
In the case of both side joint fittings 2 and 3, similarly, the groove steel 43
(Fig. 8) and fixed to the rebar by welding etc.
In addition to being able to be attached to b, the channel steel 43 itself can be used as a joint fitting as shown in FIG.

Reference numeral 5 is a connector. The coupling tool 5 includes a fitting portion 5 having a circular cross section at both ends of a flat plate-shaped insertion portion 5a.
b and 5c are integrally provided, and the insertion step portion 2 of the right side joint fitting 2 and the left side joint fitting 3 facing each other is formed.
c, 3c and the insertion slit 1c of the end fitting metal fitting 1, the insertion part 5a is inserted so that the fitting parts 5b, 5c are the half of the right side fitting fitting 2 and the left side fitting fitting 3 facing each other. The joint fittings 1, 2 and 3 can be integrally coupled by fitting into the space between the cylindrical fitting portions 2d and 3d and the fitting hole 1d of the end fitting 1 respectively. . The height of the coupler 5 is the same as that of the joint fittings 1, 2, and 3.

As shown in FIG. 5, the fitting 5 is provided with a fitting portion 5
Two half-cylindrical parts 11 which constitute one side of b and 5c (Fig. 3)
b, 12b, 11c, and 12c, which are cylindrical plates of the plate members 11 and 12, and two plate members 11 and 12 formed at both ends of the connecting portions 11a and 12a constituting one side surface of the insertion part 5a. And the two insertion shafts 13 inserted between the half-cylindrical portions 11b, 12b, 11c, 12c. With this structure, the plate bodies 11 and 12 that form the main part of the coupling tool 5 can be easily manufactured by punching, so that the cost can be reduced.

In the coupler 5 of FIG. 5, two plate members 1 are used.
The half-cylindrical portions 11b and 12b of 1 and 12 and the insertion shaft 13, and the half-cylindrical portions 11c and 12c and the insertion shaft 13 are the fitting portions 5 of the coupling tool 5.
b and 5c respectively, and two plate bodies 11 and 12
The connecting portions 11 a and 12 a of the above constitute the insertion portion 5 a of the coupling tool 5. In the case of this coupling tool 5, usually two plate bodies 11,
12 is inserted into the fitting hole 1d or between the semi-cylindrical fitting portions 2d and 3d, etc., and then between the semi-cylindrical portions 11b and 12b and the other semi-cylindrical portion 11
Inserting shafts 13 are press-fitted between c and 12c to join the fittings 1, 2, and 3 together.

Fitting portions 5b and 5c of the coupling tool 5 and the insertion shaft 1
In order to facilitate fitting of the No. 3 into the fitting hole 1d, the semi-cylindrical portions 11b and 12b, etc., as shown in FIG.
b and 5c and the insertion shaft 13 are tapered.

The joint fittings 1, 2, 3 and the joint 5 are made of steel or other metal material. End face 1 of joining metal fittings 1, 2, 3
The shapes of a, 2a and 3a are matched with the shapes of the end joint surfaces Ka, Kb and T of the segments Sa and Sb as shown in FIGS.

The basic structure of the hexagonal segment Sa to be joined is the same as that of the hexagonal segment shown in FIGS. 8 to 11, and the three hexagonal segments Sa are joined as follows. That is, the second hexagonal segment Sa (FIG. 1 and FIG. 2) is formed on one inclined joint surface Kb of the first hexagonal segment Sa (lower right segment in FIGS. 1 and 2).
The left side segment) with one inclined joint surface Ka, and the third hexagonal segment Sa (the upper right segment in FIGS. 1 and 2) is attached to the side joint surface Ga of the first segment Sa. Butt against the side joint surface Gb,
One inclined joint surface Ka is butted against another inclined joint surface Kb of the second segment Sa (see FIG. 2).

Then, as described above, between the right-side joining fitting 2 and the left-side joining fitting 3 between the insertion step portions 2c and 3c facing each other and the insertion slit 1c of the end joining fitting 1. The insertion portion 5a of the coupling tool 5 is inserted from the inside (lower side in FIG. 4) of the construction tunnel into the fitting portion 5b of the coupling tool 5,
5c is fitted into the space between the half-cylindrical fitting portions 2d and 3d of the right side joining fitting 2 and the left side joining fitting 3 which face each other, and into the fitting hole 1d of the end joining fitting 1 (Fig. 1). By this fitting operation of the coupling tool 5, the three hexagonal segments Sa are completely joined. After the fitting tool 5 is fitted, the recess O (FIG. 4) of the segment is filled with a self-hardening material such as mortar or resin-based injection material. Reference numeral 15 in FIG. 4 is a sealing material that hermetically seals the joint surface.

In the case of the coupler 5 shown in FIG. 5, the plates 11 and 12 are
Into the fitting holes 1d of the fittings 1, 2, 3 and the like, and then insert the insertion shaft 13 into the half-cylindrical portions 11b, 12b, 1 of the plates 11, 12.
Pushing in between 1c12c is as described above.

The fitting portions 5b and 5c of the coupling tool 5 and the insertion shaft 13
Prior to fitting the fitting into the fittings 1, 2, and 3, the caulking agent C (Fig. 4) contained in the capsule is attached to the semi-cylindrical fitting part 2.
d and 3d and / or fitting hole 1d, or between the semi-cylindrical parts 11b and 12b and the other semi-cylindrical parts 11c and 1d.
If it is put in both or either of the two parts 2c, the capsule will be broken at the time of the fitting operation of the coupling tool 5, and the caulking agent C will be strongly pushed out into the gap g between the joint fittings 1, 2, and 3.

According to the above-described joining method in which the caulking agent C is put in the fitting hole 1d or the like in advance, the caulking agent C can be easily filled, and the caulking agent C is applied from the central portion in the thickness direction of the segment. Since it is pushed out to the surroundings and evenly spreads in every corner, the liquid tightness of the joining metal fittings 1, 2 and 3 is improved.

The caulking agent C is mainly a resin adhesive such as a solution type adhesive that hardens to bond the metal fittings 1, 2, 3 and the like, or a two-component type adhesive that produces an adhesive force by polymerization of two liquids. Although it is used, it is not limited to this, and may be directly injected into the fitting hole 1d or the like without encapsulation.
In the case of the connector 5 of FIG. 5, the connecting portion 11 of the plates 11 and 12
A caulking agent C can be packed between a and 12a. When the caulking agent C is an adhesive, the adhesive also strengthens the joining force between the segments, and the plates 11, 12 and the plates 11, 12 and the insertion shaft 13 are firmly integrated.

The joining of the three quadrangular segments Sb is the same as the hexagonal segment Sa except that the end joining surfaces T are brought into contact with each other. 1 and 7, the bottom is the wellhead side and the top is the face side.

The fitting holes 1d and the semi-cylindrical fitting portions 2d and 3d of the joining fittings 1, 2 and 3 shown in the figure are circular or semi-circular, and the fitting portions 5b and 5c of the coupling tool 5 and the semi-cylindrical portion 11b. , 11c, 1
The shapes of 2b and 12c are also circular or semicircular according to the shape of the fitting hole 1d and the like, but the shape of the holes such as the fitting hole 1d and the shaft portions such as the fitting portions 5b and 5c fitted therein. Other shapes may be used as long as they are substantially matched.

The segments Sa and Sb are generally made of precast concrete, but the material of the main part is not limited to concrete, but other materials such as steel plates may be used. The hexagonal segment Sa of FIG. 1 has a shape in which a regular hexagon is elongated in the protruding direction of two corners facing each other like the segment of FIG. 8, and the square segment Sb of FIG. Although it is an elongated long shape, if the basic shape is a hexagon or a quadrangle, shapes other than the above, for example, the side joint surfaces Ga, Gb
May be hexagonal or quadrangular such that are not exactly parallel. Further, it may be flat and not curved in an arc shape. Therefore, the segments Sa and Sb of the present invention can be used as a retaining wall block or a floor plate as well as the tunnel lining.

[0033]

As described above, according to the first aspect of the present invention, the end joint is formed by connecting the fitting hole opened on the side surface to the inner depth of the insertion slit opened on the end surface and the side surface. A metal fitting, a right side joining metal fitting in which a semi-cylindrical fitting part opened to the side is connected to the inner depth of the insertion step opened to the end face and the side surface, and an insertion step opened to the end face and the side surface. The left-side joining metal fitting in which a semi-cylindrical fitting portion open to the side is continuously provided in the inner depth of the portion, and the semi-cylindrical fitting in which the right-hand side joining fitting and the left-hand side joining fitting face each other. The fitting portion fitted between the fitting portions and the fitting portion fitted into the fitting hole of the end-jointing metal fitting are
And a coupling member provided at both ends of the insertion portion to be inserted between the insertion step portions of the right side joining metal member and the left side joining metal member facing each other and the insertion slit of the end portion joining metal member. With such a configuration, the coupling member can be removed from the segment and the protruding member can be removed until the final stage of segment joining, so that the segment can be transported and assembled smoothly without any trouble.

In the above segment joining device, in the coupling device, two half-cylindrical portions forming one side surface of the fitting portion are provided at two ends of a connecting portion forming one side surface of the insertion portion. If the body and the two insertion shafts that are inserted between the semi-cylindrical portions of the two plates facing each other in a cylindrical shape are used, mass production of the coupler is facilitated and cost can be reduced. it can. Further, when the fitting portion of the connector according to the first aspect or the insertion shaft according to the second aspect is formed in a tapered shape, it is easy to fit the connector into the fitting.

The invention according to claim 4 is the same as claims 1 to 3.
The end joining metal fitting of the segment joining device according to any one of the above is provided substantially at the center of the end joining surface, and the right side joining fitting of the segment joining device is located on the right side joining surface, Further, the left side joint fitting is provided on each of the left side joint surfaces. Since there is no protruding portion protruding on the outer surface of the segment in the joining metal fitting of this segment, the protruding portion does not hinder work during transportation or assembly. Therefore, transportation and assembly work can be performed efficiently and quickly.

According to a fifth aspect of the present invention, the three segments having substantially the same shape as described in the fourth aspect are arranged such that one of the end segments of the first segment is joined to one of the second segments. Part of the end joint surface is brought into contact with one side joint surface of the third segment to contact one side joint surface of the first segment, and In the joining structure of the three segments provided by abutting a part of them on the remaining part of the end joining surface of the second segment, the first segment and the third segment are The right side joining metal fitting and the left side joining metal fitting and the end joining metal fitting of the second segment are between the insertion step portions of the right side joining metal fitting and the left side joining fitting. Insert the insertion section into the insertion slit of the end fitting and The insertion portion is configured to be mutually coupled by a coupling tool that is fitted between the semi-cylindrical fitting portions of the right side joining fitting and the left side joining fitting and the fitting hole of the end joining fitting. The joining tool is removed from the joining fitting until the final stage of joining and does not hinder the preliminary joining and abutting operation of the three segments, so that the joining work of the segments can be performed quickly and accurately.

In the above-mentioned joining structure, a caulking agent previously put between the fitting hole of the end fitting and / or the semi-cylindrical fitting part of the right fitting and the left fitting is When the fitting is inserted into them and pushed out into the surrounding gap to be cured, the liquid-tightness of the joint fitting portion is enhanced, and water leakage from the portion can be prevented.

[Brief description of drawings]

FIG. 1 is a plan view showing a joined state of three hexagonal segments using a segment joining device according to the present invention.

FIG. 2 is an external view showing a joining preparation state of three hexagonal segments.

FIG. 3 is an external view of a coupler.

FIG. 4 is a cross-sectional view of the segment in a joining preparation state.

FIG. 5 is an external view of another coupler.

FIG. 6 is a front view of another coupling tool and another insertion shaft.

FIG. 7 is a plan view showing a joined state of three rectangular segments using the segment joining device according to the present invention.

FIG. 8 is a plan view of a hexagonal segment using H-section steel and groove-section steel.

9 is a sectional view of a portion (IX-IX) in FIG.

FIG. 10 is a side view of the segment of FIG.

11 is a cross-sectional view of the (XI-XI) portion of FIG.

[Explanation of symbols]

1 End fitting metal fitting 1a End surface 1b Side surface 1c Insertion slit 1d Fitting hole 2 Right side fitting fitting 3 Left side fitting fitting 2a, 3a End surface 2b, 3b Side surface 2c, 3c Insert step 2d, 3d Half-cylindrical fitting Joint part 5 Coupler 5a Insertion part 5b, 5c Fitting part 11, 12 Plates 11a, 12a
Connecting parts 11b, 11c, 12b, 12c Half cylinder part 13 Insertion axis Sa Hexagonal segment Sb Square segment Ga, Gb Side joint surface T End joint surface C Caulking agent g Gap

─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroki Someya 1-12-1 Yurakucho, Chiyoda-ku, Tokyo Inside Ishikawajima Kenzai Kogyo Co., Ltd. (72) Akio Hashiguchi 1-12-1 Yurakucho, Chiyoda-ku, Tokyo Ishikawajima (56) References JP-A-7-4191 (JP, A) JP-A-8-210097 (JP, A) JP-A-8-240096 (JP, A) JP-A-63-14996 ( JP, A) Actual Kaihei 5-30299 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E21D 11/04

Claims (6)

(57) [Claims] 1. An end fitting metal fitting in which a fitting hole opened in a side surface is continuously provided in an inner depth of an insertion slit opened in an end surface and a side surface, and an insertion step portion opened in the end surface and a side surface. Semi-cylindrical fitting on the right side with a semi-cylindrical fitting part open to the side in the inner part and a semi-cylindrical part that opens to the side on the inner part of the insertion step part open to the end face and the side part The left side joining metal fitting in which the fitting portions are continuously provided, and the fitting portion and the end portion fitted between the half-cylindrical fitting portions of the right side joining metal fitting and the left side joining metal fitting facing each other. The fitting portion to be fitted in the fitting hole of the joining metal fitting is between the insertion step portions of the right fitting metal fitting and the left fitting fitting facing each other and the insertion slit of the end fitting fitting. A joining device for a segment, comprising: a coupling tool provided at both ends of an insertion portion to be inserted. 2. The coupling member constitutes one side surface of the fitting portion 2
Two half-cylindrical parts are inserted between two plate bodies provided at both ends of the connecting part that constitutes one side surface of the insertion part, and the half-cylindrical parts of the two plate bodies that are opposed to each other in a cylindrical shape. 2. The segment joining device according to claim 1, which comprises two insertion shafts. 3. A segment joining device, wherein the fitting portion of the connector according to claim 1 or the insertion shaft according to claim 2 is formed in a tapered shape. 4. A segment joining device according to any one of claims 1 to 3, wherein the end joining fitting is provided substantially at the center of the end joining surface, and the right joining part of the segment joining device is joined. A segment characterized in that a metal fitting is provided on the right side joint surface and a left side metal fitting is provided on the left side joint surface. 5. The three segments having substantially the same shape according to claim 4, wherein one end joining surface of the first segment is part of one end joining surface of the second segment. Abutting each other and making one side joining surface of the third segment 1
It is provided so as to abut on one side joint surface of the second segment and a portion of one end joint surface thereof to a portion of the remaining end joint surface of the second segment. 3
A joining structure of one segment, wherein the first segment and the third segment are opposed to each other for the right side fitting and the left side joining fitting, and the second segment is for the end part. The joining metal fitting is configured to insert two insertion portions between the insertion step portions of the right-hand side joining metal fitting and the left-hand side joining metal fitting and the insertion slit of the end joining metal fitting so that two fitting portions are provided for the right-hand side portion. A joining structure for segments, wherein the joining members and the left-side joining fittings are joined to each other by a joining tool fitted between the semi-cylindrical fitting portions and the fitting holes of the end joining fittings. 6. A caulking agent preliminarily placed between the fitting hole of the end fitting and / or the semi-cylindrical fitting part of the right fitting and the left fitting is bonded to them. The joint structure for a segment according to claim 5, wherein the joint structure is extruded into a peripheral gap and hardened by fitting of a tool.