JPH11210386A - Segment joining metal fitting, segment, and method for joining segments - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently fill each gap between joining metal fittings with a caulking compound. SOLUTION: A projection 3c of a joining metal fitting 3 inserted into an insert hole 1c provided in the metal fitting at the time of joining hexagonal segments Sa breaks a capsule 5 and extrudes a caulking compound (c) to gaps (g) between joining metal fittings 1, 2, 3 from the hole 1c. The caulking compound (c) is extruded strongly by the projection 3c to the central part in the segment-thickness direction of the gap (g), so that the compound goes uniformly to the whole area of the gap (g) which is therewith choked certainly. The projection 3c inserted into the hole 1c strengthens the joining force of the mutual segments Sa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint for joining segments used for constructing a tunnel or the like, a segment provided with the joint, and a method for joining the segments.

[0002]

2. Description of the Related Art The applicant of the present invention has previously developed a hexagonal segment shown in FIGS.
38258. The hexagonal segments are provided on the corners of the two inclined joining surfaces Ka and Kb by fixing the joining metal fitting 41 having the head 41b formed at the outer end of the fitting main body 41a to the web 42a of the H-shaped steel 42, A fitting portion 43b into which the head 41b of the joining metal fitting 41 is fitted is provided on a web 43a of the channel steel 43 provided with the side joining surfaces Ga and Gb formed, and one of the first hexagonal segments S1 is formed. One inclined joining surface Ka of the second hexagonal segment S2 is abutted against the inclined joining surface Kb, and the fitting 41 of the second hexagonal segment S2 is fitted to the fitting portion 43b of the first hexagonal segment S1. Head 4
1b are fitted and joined to each other, and the third hexagonal segment S3 is joined with its side joint surface Ga against the side joint surface Gb of the first hexagonal segment S1, and Of the hexagonal segment S2 of FIG.
The fitting portion 43b of the side joint surface Ga is fitted to the head portion 41b of the second hexagonal segment S2, and one inclined joint surface Ka is brought into contact with the other inclined joint surface Kb of the second hexagonal segment S2 to form a hexagonal segment. S1, S2 and S3 can be joined together. The hexagonal segments are curved in an arc shape in a side view as shown in FIGS. 8 and 9.

According to the new hexagonal segment, a strong joining force can be obtained. For example, even if the tunnel constructed by the hexagonal segment is a water channel, it can sufficiently withstand the water pressure from the center outward. .

[0004]

However, if the segments are merely joined as described above, water leaks from the gaps of the joint fittings and the like, and the leakage is prevented by using a caulking agent such as mortar. It is not easy to fill the caulking agent into the bent gap between the joints,
There is a problem that it takes time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a segment metal fitting, a segment, and a method for bonding segments, which can accurately and easily fill a gap between the metal fittings with a caulking agent.

[0006]

In order to achieve the above object, according to the present invention, there is provided a male type joint for joining segments by fitting a head into a fitting portion of a female joint fitting. In the joining metal fitting for a segment, an insertion hole for a caulking agent is formed in the head along a fitting direction of the head to the fitting portion. According to a second aspect of the present invention, there is provided a female segment joining metal fitting for joining segments by fitting a fitting part to a head of a male joining metal fitting, wherein the male fitting metal fitting is attached to the fitting part. The extrusion protrusion inserted into the insertion hole formed in the head is provided so as to protrude in the fitting direction of the fitting portion to the head.

In the above means, when the fitting portion of the female fitting is fitted to the head of the male fitting, the push-out projection provided on the fitting is inserted into the insertion hole formed in the head. At the time of fitting, the caulking agent previously inserted into the insertion hole is extruded into the surrounding gap by the extrusion protrusion.

According to a third aspect of the present invention, the segment metal fitting of the first aspect is provided at a corner of two inclined bonding surfaces,
According to a second aspect of the present invention, the segment metal fitting is provided on at least one of the side bonding surfaces substantially parallel to each other. According to a fourth aspect of the present invention, the segment joint fitting is provided substantially at the center of the end joining surface, and the segment joint fitting according to the second aspect is at least one of the side joining surfaces substantially parallel to each other. It was set as the structure provided in.

In the above means, the caulking agent in the insertion hole is pushed out into the surrounding gap by inserting the extrusion protrusion into the insertion hole during the joining operation between the segments.

According to a fifth aspect of the present invention, the head of one male fitting of the second segment is fitted into the fitting portion of one female fitting of the first segment. When the three segments according to claim 3 or 4 are joined together by fitting a fitting portion of one female joint fitting of the third segment to the head of the male joint fitting. The caulking agent in the insertion hole and / or the accommodating hole connected to the insertion hole is extruded into the gap between the connection metal fittings by inserting the extrusion protrusion provided in the fitting portion of the female type metal fitting into the inserted hole. It was configured to be joined.

According to this means, it is not necessary to fill a gap between the joints with a caulking agent after the three segments are joined.

In the above segment joining method, it is preferable that the caulking agent is contained in a capsule which can be broken by inserting the extrusion protrusion into the insertion hole. This eliminates the need for the operator to inject the caulking agent into the insertion hole one by one, and allows the gap to be filled with a predetermined amount of the caulking agent regardless of the amount of the amount. Further, it is desirable that the caulking agent be an adhesive liquid that cures to close the gap (claim 7).

[0013]

Embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 6 show an embodiment of the present invention, and reference numeral 1 denotes a male joint fitting made of steel or the like. The joining metal fitting 1 is provided with a head 1b at the tip of a metal fitting body 1a, and a circular insertion hole 1c is formed in the head 1b along the thickness direction of the head 1b (the left-right direction in FIGS. 2 and 3). Consisting of

Reference numerals 2 and 3 denote female joints made of steel or the like. One joint 2 is formed by providing a fitting portion 2b on an outer surface on one side of a bracket main body 2a, and the other joint 3 is
A fitting portion 3b is provided on an outer surface of one side of the metal fitting body 3a, and a circular extrusion protrusion 3c protrudes from the fitting portion 3b in the depth direction of the fitting portion 3b (the left-right direction in FIGS. 2 and 3). Consisting of

The head 1b of the joint 1 and the fittings 2b, 3b of the joints 2, 3 are fitted to one head 1b with the two fittings 2b, 3b facing each other. Their shapes are determined so that they are combined. Further, the insertion hole 1c of the joint 1 and the extrusion protrusion 3c of the joint 3 are sized and positioned so that the extrusion protrusion 3c is inserted into the insertion hole 1c in the above-mentioned fitting state of the joints 1, 2, and 3. Is stipulated.

When the segment is a hexagonal segment Sa, as shown in FIGS. 2 to 5, the male joint 1 has its center line at the corner of the two inclined joining surfaces Ka and Kb. In the case of the quadrangular segment Sb, the center line is projected at the center of the end joining surface T so as to coincide with the center line of the segment Sb, as shown in FIG. The quadrangular segment Sb is curved in an arc shape in a side view similarly to the hexagonal segment Sa.

Further, one of the female-type joint fittings 2 is provided on the side joint surface Gb as shown in FIGS. 2 to 6 in both the hexagonal segment Sa and the quadrangular segment Sb, and the other female joint fitting 2 is provided. The mold joint 3 is provided on another side joint surface Ga.

The female-type joint 2 and the segment Sa include:
As shown in FIGS. 4 and 5, the storage holes 2c, s
c is formed so as to be continuous with the insertion hole 1c. The storage hole may be formed only in the joint 2. In any case, the length of the extrusion protrusion 3c is increased by the length of the storage holes 2c and sc. The rectangular segment Sb can also have the same configuration as described above.

Reference numeral 5 denotes a capsule. The caulking agent c is packed in the capsule 5. Caulking agent c
For example, a resin adhesive such as a solution-type adhesive that cures and bonds the joining fittings 1, 2, and 3 and a two-component adhesive that generates an adhesive force by polymerization of two liquids is mainly used. It is not limited. The caulking agent-containing capsule 5 is easily broken by compression by the extrusion protrusion 3c, and is used by being housed in the insertion hole 1c and / or the housing holes 2c and sc.

When a plurality of capsules 5 are to be inserted into the insertion hole 1c or the like, they may be inserted side by side in the length direction of the hole as shown in FIG. 4 or may be overlapped in the radial direction as shown in FIG. The two capsules 5 in FIGS. 4 and 5 can be considered as capsules having the same content liquid or different capsules of a two-component adhesive having different content liquids.

The joining of the hexagonal segments Sa having the joining fittings 1, 2, and 3 is basically the same as that of FIG. 7, and the first hexagonal segment Sa (the lower left portion in FIGS. 2 to 5). Segment), the one hexagonal segment Sa of the second hexagonal segment Sa (the upper segment in FIGS. 2 to 5) abuts the one inclined junctional surface Ka of the second hexagonal segment Sa. The head portion 1b of the joining fitting 1 of the second hexagonal segment Sa is fitted into the second fitting portion 2b, and the third hexagonal segment Sa (the lower right segment in FIGS. 2 to 5) is The side joint surface Ga is 1
At the same time as abutting against the side joint surface Gb of the second segment Sa, the extrusion protrusion 3c of the joint 3 is inserted into the insertion hole 1c, and the joint 1 is attached to the head 1b of the joint 1 of the second hexagonal segment Sa. The three fitting portions 3b are fitted, and one inclined joining surface Ka is abutted against another inclined joining surface Kb of the second segment Sa.

The extruding projection 3c inserted into the insertion hole 1c during this joining operation breaks the capsule 5 and allows the caulking agent c to be inserted into the insertion hole 1c (in the case of FIG. 2) or the insertion hole 1c and the storage hole 2c.
It is extruded from the sc (in the case of FIGS. 4 and 5) into the gap g between the joints 1, 2, and 3. At this time, the caulking agent c is provided at the center of the gap g in the segment thickness direction by the extrusion protrusion 3.
Since it is strongly pushed out by c, it spreads all over the gap g evenly, and the gap g is reliably closed. Further, the insertion hole 1c and the extrusion protrusion 3c inserted into the insertion hole 1c and the storage portions 2c and sc enhance the joining force between the segments. Further, when the caulking agent c is an adhesive, the bonding strength is also increased by the adhesive.

The joining of the quadrangular segments Sb is the same as the hexagonal segment Sa except that the end joining surfaces T abut against each other. 2 to 6, the left side is the wellhead side, and the right side is the face side.

The present invention is not limited to the above, and can be modified as follows, for example.

That is, the insertion hole 1c (storage hole 2c,
sc) and two extrusion protrusions 3c are provided, but may be any number as long as it is one or more. The total volume of the holes 1c, 2c, and sc is usually equal to the expected gap g of the joints 1, 2, and 3.
Is sufficiently larger than the total volume of Also, holes 1c, 2
The cross-sectional shapes of c, sc and the extrusion protrusion 3c are circular as described above, but may be other shapes. The extrusion protrusion 3c may be tapered and the holes 1c, 2c and sc may be tapered. In some cases, the holes 1c, 2c, sc
May be injected.

The segments Sa and Sb are generally made of precast concrete, but the material of the main part is not limited to concrete, but may be other materials such as a steel plate. The hexagonal segment Sa in FIGS. 2 to 5 has regular hexagons facing each other similarly to the segment in FIG.
Each of the quadrangular segments Sb in FIG. 6 is a long rectangular shape extending in one direction. However, if the basic shape is a hexagon or a quadrangle, Alternatively, a shape other than the above, for example, a hexagon or a quadrangle in which the side joint surfaces Ga and Gb are not exactly parallel may be used. Further, the plate need not be curved in an arc shape. Therefore, the segments Sa, S of the present invention
b can be used as a retaining wall block, a floor plate, and the like in addition to the tunnel lining.

The heads 1b of the fittings 1, 2, and 3 and the fitting portion 2
The shapes of b and 3b are not limited to those shown in the drawings, and can be variously changed. The female joint fittings 2 and 3 can be the channel steel 43 of FIG.

[0028]

As described above, according to the first and second aspects of the present invention, the gap is filled with a caulking agent such as an adhesive without any trouble at the time of the joining operation to improve the liquid tightness. ,
In addition, a segment that can be firmly joined can be obtained.

Further, according to the third and fourth aspects of the present invention, it is possible to construct a tunnel or the like having excellent liquid tightness and high bonding strength.

According to the fifth aspect of the present invention, since the gap is automatically filled with the caulking agent during the joining operation between the segments, the caulking agent is filled in a separate step as compared with the conventional filling method. Thus, the joining operation of the segments can be performed efficiently. In addition, the caulking agent is pushed out to the central portion of the gap with a strong force and evenly spreads over the entire gap, so that it is possible to more reliably prevent water leakage and to obtain a strong bonding strength.

[0031] In the segment joining method of claim 5,
When the caulking agent is contained in a capsule, it is not necessary for the operator to inject the caulking agent into the insertion hole or the like one by one, and the gap can be filled with a predetermined amount of the caulking agent regardless of the scale. When an adhesive is used as the caulking agent, the segments are more firmly joined to each other.

[Brief description of the drawings]

FIG. 1 is an external view of a male joint and a female joint.

FIG. 2 is a sectional view showing a joining operation state of a hexagonal segment.

FIG. 3 is a sectional view of a hexagonal segment after joining is completed.

FIG. 4 is a cross-sectional view showing a joining operation state of another hexagonal segment.

FIG. 5 is a cross-sectional view of a case where two capsules are placed in an insertion hole or the like while being superposed in the radial direction.

FIG. 6 is a plan view showing a joining operation state of the quadrangular segments.

FIG. 7 is a partially broken plan view of a hexagonal segment using an H-section steel and a channel steel.

8 is a sectional view of a portion (VIII-VIII) in FIG. 7;

FIG. 9 is a side view of the segment of FIG. 7;

FIG. 10 is a cross-sectional view taken along the line (XX) of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Male joining metal fitting 1a Metal fitting main body 1b Head 1c Insertion hole 2, 3 Female joining metal fitting 2a, 3a Metal fitting main body 2b, 3b Fitting portion 2c, sc Storage hole 3c Extrusion protrusion 5 Capsule Sa Hexagonal segment Sb Square segment Ka , Kb Inclined joint surface Ga, Gb Side joint surface T End joint surface c Caulking agent g Gap

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Koji Shiraishi, Inventor Koji Shiraishi 2-2-2, Matsuzakicho, Abeno-ku, Osaka-shi, Osaka Okumura Gumi Co., Ltd. (72) Inventor Hiroki Someya 1-12-1, Yurakucho, Chiyoda-ku, Tokyo (72) Inventor Akio Hashiguchi 1-12-1 Yurakucho, Chiyoda-ku, Tokyo Inside Ishikawashima Building Materials Co., Ltd.

Claims (7)

[Claims] 1. A male segment joint fitting for joining segments by fitting a head into a fitting portion of a female joint fitting, wherein an insertion hole for a caulking agent is fitted in the head. A joining metal fitting for a segment formed along a fitting direction of a head to a part. 2. A female segment joining fitting for joining segments by fitting a fitting portion to a head of a male joining fitting, wherein the fitting portion has a head of the male joining fitting. And a push-out projection to be inserted into the insertion hole formed in the fitting portion is provided so as to protrude in a fitting direction of the fitting portion to the head. 3. The segment joint fitting according to claim 1 is provided at a corner of two inclined joining surfaces, and the segment joint fitting according to claim 2 is provided on at least one of the side joining surfaces substantially parallel to each other. Hexagonal segment characterized by being done. 4. The segment joint according to claim 1 is provided substantially at the center of the end joint surface, and the segment joint metal according to claim 2 is provided at at least one of the side joint surfaces substantially parallel to each other. A rectangular segment characterized by the following. 5. The head of one male joint of the second segment is fitted into the fitting part of one female joint of the first segment, and the third segment is inserted into the head. When joining the three segments according to claim 3 or 4 by fitting the fitting portion of one of the female joining fittings,
By inserting the extrusion protrusion provided on the fitting part of the female joint fitting into the insertion hole formed in the head of the male joint fitting, the caulking in the insertion hole and / or the storage hole connected to the insertion hole is made. A segment joining method, wherein an agent is extruded into a gap between joining metal fittings to join. 6. The segment joining method according to claim 5, wherein the caulking agent is contained in a capsule that is broken by inserting the extrusion protrusion into the insertion hole. 7. The segment joining method according to claim 5, wherein the caulking agent is cured to form an adhesive liquid for closing the gap.