JP2001065298A - Segment junction structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a junction structure capable of increasing a connection force of joints for jointing both segments to each other, and achieving compact and simple structure of the joints in spite of an increased connection force. SOLUTION: This junction structure 1 comprises a female joint 4 comprising two plate-shaped base parts 5 disposed apart from each other to form a roughly C-shaped cross section, and a male joint 3 comprising two plate-shaped base parts 5 facing each other to form a roughly T-shaped cross section. The two base parts 5 in the male joint 3 are inserted from a slit 8 in the female joint 4 having the roughly C-shaped cross section into it, so claw-shaped lock parts 6 of both joints 3, 4 are locked to each other, thereby the male joint 3 is engaged with the female joint 4 to strongly connect and joint both segments 2 to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure in which each segment constituting each segment ring for shield tunnel lining is moved in the direction of the tunnel axis to join the rings in each segment. It is.

[0002]

2. Description of the Related Art As a joining structure between rings of each segment constituting each segment ring for shield tunnel lining, conventionally, as shown in FIGS. 10 and 11, a ring in both segments 30 to be joined is used. Joint surface 30a between
In addition, there is generally known a joint provided with a joint 31 (a so-called hook joint) including a base 31a, which is a single steel plate, and a claw-shaped engaging portion 31b formed at the tip of the base 31. I have.

That is, in this conventional joining structure, two base portions 31a of a joint 31 having a claw-shaped locking portion 31b are opposed to each other so that the respective claw-shaped locking portions 31b are engaged with each other, and the two segments to be bonded are formed. It is provided on the joint surface 30a between the rings in 30.

In this conventional joining structure, as shown in FIG. 10, a claw-shaped engaging portion 31b of a joint 31 provided on one segment 30 to be joined and a joint provided on the other segment 30 are provided.
The claw-shaped engaging portions 31b of the 31 face each other and are engaged with each other to transmit the stress to each segment 30 between the rings.

At the time of this joining, each of the segments to be joined is formed by engaging and engaging the claw-shaped engaging portions 31b.
The joint surface 30a between the rings at 30 will be closed.

[0006]

In the conventional joint structure as described above, the joint is composed of a base, which is a single steel plate, and a claw-shaped engaging portion formed at the tip of the base. In order that the engagement of the claw-shaped engaging portions in the joint of the two segments to be joined cannot be easily released, the engaging height of the claw-shaped engaging portions, which are the engaging portions, must be sufficiently set.

For this reason, in this conventional joining structure, in order to increase the engaging force of the claw-shaped engaging portions of the respective joints, that is, the connecting force of the joints, it is necessary to enlarge the entire joint together with the claw-shaped engaging portions. is there.

In addition, the engagement of the claw-shaped locking portions in each joint depends on the elasto-plastic deformation of the base of each joint connected to the claw-shaped locking portion and the repulsive force of the elasto-plastically deformed base. I have.

Therefore, in the conventional joint structure as described above, it is necessary to increase the elastic repulsive force of the base of the joint in order to ensure the engagement of the claw-shaped locking portion of the joint. It is inevitable to set the shape and dimensions large.

Further, since the segment ring is likely to be misaligned in the radial direction, if the joint is a joint in the above-described conventional joint structure, the engagement between the claw-shaped locking portions is likely to be released due to the misalignment.

As described above, in the conventional joint structure as described above, if the engagement force (the coupling force of each joint) of the claw-shaped locking portion in each joint (hook joint) is increased, one piece of steel is used. There has been a problem that the joint becomes large and expensive, for example, by increasing the shape and size of the base portion, which is the plate body.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to increase the connecting force of each joint for joining both segments, and to make the joint compact and simple even if the connecting force is increased. It is an object of the present invention to provide a joining structure of segments that can be structured.

[0013]

According to the joint structure of the present invention, the male joint and the female joint have a plate shape in which one side is located inside the segment and the other side is exposed to the joint surface of the segment. , A claw-shaped locking portion provided on an exposed end of the base, and an anchor provided on one side of the base.

The male joint is provided with two plate-shaped bases abutting each other, and the engaging surfaces of the claw-shaped engaging portions of each base are directed in opposite directions. The portion of the segment exposed to the joint surface is configured to have a substantially T-shaped cross section.

In the female joint, the plate-shaped base portions are disposed at positions spaced apart from each other by a predetermined distance, and the engaging surfaces of the claw-shaped engaging portions face each other, so that the joining surfaces of the segments are joined. The exposed portion is formed to have a substantially C-shaped cross section having a slit.

According to the joint structure of the present invention using such a male joint and a female joint, the base of the two male joints facing each other is inserted into the female joint through the slit of the female joint. Since the claw-shaped engaging portion of the male joint and the claw-shaped engaging portion of the female joint are engaged with each other, the male joint of one segment to be joined and the female joint of the other segment are fitted to each other. It is configured to match.

According to the joint structure of the present invention, a joint is formed by using two bases each having a claw-shaped locking portion and an anchor portion and disposing them face-to-face or back-to-back. The configuration is such that the two segments to be joined are joined by the engagement of the two claw-shaped locking portions of the two base portions, so that the height of the meshing portion (claw-shaped locking portion at the base portion) of the joint can be theoretically determined. In addition, it can be reduced to half that of the joint in the conventional joint structure.

From this, in the joint structure of the present invention,
It is not necessary to increase the size of the joint (base), and a large engaging force can be obtained. Further, in the joint structure of the present invention, the male joint consisting of two bases is also fitted to the female joint consisting of two bases, so that the joint consisting of one base in the conventional joint structure is used. Also, the two segments to be joined can be firmly connected and joined.

On the other hand, in the joint structure according to the present invention (the joint structure according to claim 2 of the present invention), the male joint and the female joint have one side located inside the segment,
A common base consisting of a plate-shaped base whose other side is exposed to the joining surface of the segment, a claw-shaped locking portion provided at an exposed end of the base, and an anchor provided at one side of the base. It is composed of members.

That is, in the joint structure of the present invention (joint structure according to claim 2), a plurality of basic members (a base portion, a locking portion, and an anchor portion) of one form (two each of a male type and a female type) are provided. ) In combination, a male joint and a female joint can be configured.

Therefore, in the joint structure according to the present invention (joint structure according to claim 2), if only a large number of basic members are manufactured, the male joint and the female joint can be constituted only by the assembly, and the productivity of the joint can be improved. Can be improved.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a joint structure of a segment according to the present invention.

As shown in FIG. 1, the joining structure 1 is such that each segment 2 constituting each segment ring (not shown) for shielding tunnel lining is moved in the direction of the tunnel axis to form one segment to be joined. The two male joints 3 and the female joints 4 of the other segment are fitted to each other, so that the connection between the rings in each segment ring can be performed.

As shown in FIGS. 2 and 3, the male joint 3 and the female joint 4 used in the joining structure 1 have one side located inside the segment 2 and the other side joined to the segment 2. 2a, a plate-shaped base portion 5 exposed to the outside, and a claw-shaped locking portion 6 provided at an exposed end of the base portion 5
And an anchor 7 provided on one side of the base 5.

As shown in the area A in FIG. 2, the male joint 3 is provided with two plate-shaped bases 5 abutting against each other. The engaging surfaces are directed in opposite directions, and the exposed portion of the segment 2 to the joint surface 2a is configured to have a substantially T-shaped cross section.

As shown in a range B in FIG. 2, the female joint 4 has two plate-shaped bases 5 disposed at a predetermined distance from each other, and a claw-shaped base 5 at each base 5. The locking surfaces of the locking portions 6 are arranged so as to face each other, and the exposed portion of the segment 2 to the joint surface 2a is formed to have a substantially C-shaped cross section having a slit 8.

The joint structure 1 using such a male joint 3 and a female joint 4 inserts the two bases 5 of the male joint 3 into the female joint 4 from the slit 8 (see FIG. 3), the claw-shaped locking portion 6 of the male joint 3
The male joint 3 of one segment 2 to be joined and the female joint 4 of the other segment 2 are connected to each other by the claw-shaped engaging portion 6 of the female joint 4 and the claw-shaped engaging portion 6 of the female joint 4 (see FIG. 1). They are configured to fit each other.

As shown in FIGS. 4 and 5, the male joint 3 and the female joint 4 in this embodiment are made of a steel base 5 formed into a rectangular plate, and the base 5 is exposed. It comprises a claw-shaped locking portion 6 formed by bending an end portion, and an anchor portion 7 provided on the locking surface side (see the drawing) of the claw-shaped locking portion 6 in the base 5.

The anchor 7 here is provided with a mounting piece 7a formed by bending one end of the base 5 into a substantially L-shape, and is provided in the segment 2 with the mounting piece 7a penetrating therethrough. Anchor pin 7b.

As described above, the male joint 3 and the female joint 4 in this embodiment are produced through bending (plastic working) of a plate (steel plate). The male joint 3 and the female joint 4 in this embodiment are the same as those shown in FIG.
As shown in FIG. 3, a plate-shaped base 5 having one side located inside the segment 2 and the other side exposed at the joint surface 2a of the segment 2 is provided at an exposed end of the base 5. A common basic member 9 (see FIGS. 2 and 4) including a claw-shaped locking portion 6 and an anchor portion 7 provided on one side of the base portion 5.
Reference).

From this, the male joint 3 and the female joint 4 are, as shown in FIG. 2, a common basic member having one form of a base 5, a claw-shaped locking portion 6, and an anchoring portion 7. By combining a plurality of 15 (two each for male and female), the male joint 3 (range A in FIG. 2) and the female joint 4
(Range B in FIG. 2).

Therefore, if only a large number of the basic members 9 are formed, the male joint 3 and the female joint 4 can be easily and inexpensively manufactured only by the assembly.
As shown in FIG. 1, the slit 8 of the female joint 4 in this embodiment has a gap into which the two bases 5 of the male joint 3 can be inserted by moving the segment 2 in the tunnel axial direction. I have. The interval between the slits 8 of the female joint 4 is pushed and expanded by the claw-shaped engaging portions 6 of the male joint 3 when the male joint 3 is inserted into the female joint 4.

The joining between the rings of each segment 2 constituting each segment ring using the joining structure 1 of the present invention having such a structure is performed by first connecting one segment 2 to be joined to a tunnel shaft. The male joint 3 is inserted from the slit 8 into the female joint 4 of the other segment to be joined.

Then, the claw-shaped engaging portion 6 of the male joint 3 in the one segment 2 is engaged with the claw-shaped engaging portion 6 of the female joint 4 in the other segment 2 so that the male joint is formed. 3 and the female joint 4 are fitted with each other,
Joining between the rings of each segment 2 is performed.

In such a joint structure 1 of the present invention, two bases 5 each having a claw-shaped locking portion 6 and an anchoring portion 7 are used, and they are arranged face-to-face or back-to-back, respectively, and a joint (male type) The joint 3 and the female joint 4) are constituted, and the two segments 2 to be joined are joined by the engagement of the both claw-shaped locking portions 6 on the two base portions 5 of the joint. The height of the engaging portion (the claw-shaped engaging portion 6 in the base portion 5) of the (male joint 3 and female joint 4) can be theoretically reduced to half that of the joint in the conventional joint structure.

Accordingly, it is not necessary to increase the size of the joint (the base 5 of the male joint 3 and the female joint 4), and a large engaging force can be obtained. Further, in the joint structure 1 of the present invention, the male joint 3 composed of the two bases 5 is fitted to the female joint 4 also composed of the two bases 5, so that one joint in the conventional joint structure is formed. The two segments 2 to be joined can be more firmly connected and joined than the joint consisting of the base.

Further, the fact that the segments 2 can be firmly joined can restrict the displacement of the segments 2 in the tunnel radial direction, and therefore, the misalignment of the segments 2 which is the displacement of the joined segments 2 in the tunnel radial direction. Can be prevented.

On the other hand, in the joint structure 1 of the present invention (joint structure according to claim 2 of the present invention), the male joint 3 and the female joint 4 are arranged such that one side is located inside the segment 2 and the other side is the segment. 2, a plate-shaped base portion 5 exposed on the joint surface 2a, a claw-shaped locking portion 6 provided on an exposed end of the base portion 5, and an anchor portion 7 provided on one side of the base portion 5. And a common basic member 9.

That is, in the joining structure 1 (joining structure according to claim 2) of the present invention, the basic member 9 (the base 5
And the claw-shaped locking portion 6 and the anchor portion 7) (two each of a male type and a female type) are combined to form the male joint 3 and the female joint 4
And can be configured.

Therefore, in the joining structure 1 of the present invention, if only a large number of the basic members 9 are manufactured, only the assembly is required.
The male joint 3 and the female joint 4 can be configured, and the productivity of the joint can be improved.

The formation of the male joint 3 and the female joint 4 by combining a plurality of the basic members 9 (the base 5, the claw-shaped locking portions 6, and the anchors 7) of this embodiment is performed by the segment Even when the number of joints used is small, the basic member 9 is required for the male joint 3 and the female joint 4 and is four times as many as the number of joints. Therefore, it becomes possible to supply the joint at low cost. If this is cast, the shape of the unit can be arbitrarily selected and a reasonable shape can be obtained.

The male joint 3 and the female joint 4 composed of the basic members 9 (the base 5, the claw-shaped locking portion 6, and the anchor 7) used in the joint structure 1 of the present invention have simple shapes. In addition, it can be manufactured by bending a steel plate or by casting.

Moreover, in the joint structure 1 of the present invention, the male joint 3 and the female joint 4 can be assembled in one pass, and the workability is excellent because no bolts are used.

Further, in the joint structure 1 of the present invention, the use of the above-described male joints 3 and female joints 4 eliminates the need for a bolt box for performing a bolting operation or the like, and makes the inner surface of each segment smooth. Therefore, it is effective in omitting the secondary lining.

FIG. 6 shows another embodiment of the basic member 9 (the base 5, the claw-shaped engaging portion 6, and the anchor 7) constituting the male joint 3 and the female joint 4 in the joint structure 1 of the present invention. The base 5 is made by casting.

The male joint 3 and the female joint 4 here
A claw-shaped locking portion 6 provided at an exposed end of the base 5;
, Which is attached to the locking surface side of the claw-shaped locking portion 6 by welding or the like in a separate process, has an anchor portion 7 made of a rod material, and has a claw-shaped locking provided on the base portion 5. The part 6 is integrally formed with the base part 5 by casting.

As shown in FIG. 7, the joint structure 1 using the male joint 3 and the female joint 4 is formed by connecting the male joint 3 and the female joint 4 to one side of the base 5 and the anchor 7. Is provided within the segment 2.

FIG. 8 shows another embodiment of the basic member 9 (base 5, claw-shaped locking portion 6, and anchor 7) constituting the male joint 3 and the female joint 4 used in the joint structure 1 of the present invention. It shows.

The anchor mounting portion 10 is integrally formed with the base 5 by casting together with the claw-shaped locking portion 6 so that the anchor portion 7 made of a bar is screwed into the base 5 here. are doing.

FIG. 9 shows another embodiment of the joint structure 1 of the present invention. Here, the male joint 3 is constituted by using the base 5 shown in FIG. The female joint 4
Are composed of completely different members.

[0051]

According to the joint structure of the present invention, two joints each having a claw-shaped locking portion and an anchor portion are arranged face-to-face or back-to-back to form a joint. By configuring to join both segments to be joined by engagement of both claw-shaped locking portions on the two base portions of the joint, the height of the meshing portion of the joint (claw-shaped locking portion at the base) is increased. Theoretically, it can be reduced to half that of the joint in the conventional joint structure.

Therefore, it is not necessary to increase the size of the joint (base), and a large engaging force can be obtained. Further, in the joint structure of the present invention, the male joint consisting of two bases is also fitted to the female joint consisting of two bases, so that the joint consisting of one base in the conventional joint structure is used. Also, the two segments to be joined can be firmly connected and joined.

Therefore, the displacement of the segments in the radial direction of the tunnel can be restrained, and the misalignment of the segments, which is the displacement of the joined segments in the radial direction of the tunnel, can be prevented.

Further, in the joint structure of the present invention (the joint structure according to claim 2 of the present invention), one side of the male joint and the female joint is located inside the segment, and the other side is located on the joint surface of the segment. An exposed plate-shaped base, a claw-shaped locking portion provided at an exposed end of the base,
It consists of a common basic member consisting of an anchor provided on one side of the base.

That is, in the joint structure of the present invention (joint structure according to claim 2), a plurality of basic members (a base portion, a claw-shaped locking portion, and an anchor portion) of one form are provided for each of a male type and a female type. Two pieces)
In combination, a male joint and a female joint can be configured.

Therefore, the joint structure of the present invention (claim 2)
In the joint structure according to (1), if only a large number of basic members are manufactured, the male joint and the female joint can be constituted only by the assembly, and the productivity of the joint can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a joint structure of segments according to the present invention.

FIG. 2 is a schematic diagram showing basic members (a base portion, a claw-shaped locking portion, and an anchor portion) of a male joint and a female joint used in the joint structure of the present invention.

FIG. 3 is a schematic sectional view showing a state before fitting of a male joint and a female joint used in the joint structure of the present invention.

FIG. 4 is a schematic perspective view showing basic members (a base, a claw-like locking portion, and an anchor portion) of a male joint and a female joint used in the joint structure of the present invention.

FIG. 5 is a schematic perspective view showing a fitted state of a male joint and a female joint used in the joint structure of the present invention.

FIG. 6 is a schematic view showing another form of the basic members (the base, the claw-shaped locking portion and the anchor portion) of the male joint and the female joint used in the joint structure of the present invention.

FIG. 7 is a schematic cross-sectional view showing a state before fitting of a male joint and a female joint constituted by the base of FIG. 6 used in the joint structure of the present invention.

FIG. 8 is a schematic view showing another form of the basic members (the base, the claw-shaped locking portion and the anchor portion) of the male joint and the female joint used in the joint structure of the present invention.

FIG. 9 is a schematic sectional view showing another embodiment of the joining structure of the present invention.

FIG. 10 is a schematic sectional view showing a conventional joining structure.

FIG. 11 is a schematic sectional view showing a state before locking of a male joint and a female joint used in a conventional joint structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Joint structure, 2 ... Segment, 2a ... Joint surface, 3 ... Male joint, 4 ... Female joint, 5 ... Base, 6 ... Claw-shaped locking part,
7: anchor part, 7a: mounting piece, 7b: anchor pin, 8
... Slit, 9 ... Basic member, 10 ... Anchor attachment part.

Continuation of the front page (71) Applicant 000231110 Nippon Kokan Light Steel Co., Ltd. 6100, Sankeijiri, Kumagaya-shi, Saitama (71) Applicant 000230010 Geostar Co., Ltd. 4- 2-3 Shiba, Minato-ku, Tokyo (71) Applicant 000112749 FUJIMI KOKEN Co., Ltd. 3-11-18 Iidabashi, Chiyoda-ku, Tokyo (71) Applicant 593139651 Saei Kenko Co., Ltd. 5 Okura, Okura, Itakura-cho, Euraku-gun, Gunma Prefecture (71) Applicant 000001052 Kubota Corporation Osaka, Osaka (72) Inventor Minoru Yamamoto 1-2-1, Tamagawa Gakuen, Machida-shi, Tokyo (72) Inventor Hirohide Hashimoto 1-12-1, Yurakucho, Chiyoda-ku, Tokyo Ishikawajima Building Materials (72) Inventor Junichi Tsuzuki 6-30-8 Seijo, Setagaya-ku, Tokyo (72) Inventor Shogo Nagaoka 6-18-12 Kita-karasan, Setagaya-ku, Tokyo F-207 (72) Inventor 1434-75 Irumagawa, Sayama City, Saitama Prefecture (72) Inventor Takaomi Mori Chiyoda-ku, Tokyo No. 3-11-18 Tabashi Inside Fujimi Koken Co., Ltd. (72) Inventor Satoshi Akitaya 5 Ookura, Itakura-cho, Ora-gun, Gunma Saei Kenko Co., Ltd. (72) Inventor Masayuki Horiki Taisho, Osaka-shi, Osaka 7-12-22 Minamionkajima-ku Kubota Enkajima Plant F-term (reference) 2D055 BA01 GC04

Claims (2)

[Claims] 1. Each segment constituting each segment ring for shield tunnel lining is moved in the axial direction of the tunnel so that a male joint of one segment and a female joint of the other segment to be joined are fitted to each other. A joining structure for joining the rings in each of the segment rings by joining together, wherein the male joint and the female joint have one side located inside the segment and the other side exposed at the joint surface of the segment. A base body, a claw-shaped locking part provided on an exposed end of the base part, and an anchor part provided on one side of the base part. The bases of the segments are arranged in contact with each other, and the engaging surfaces of the claw-like engaging portions of the bases are oriented in opposite directions to each other, so that the exposed portions of the segments are exposed to the joining surfaces. Is formed so as to have a substantially T-shaped cross section. The female joint is provided with two plate-shaped bases separated by a predetermined distance, and a claw-shaped engagement at each base. The engagement surfaces of the portions face each other, and the exposed portion of the segment to the joint surface is configured to have a substantially C-shaped cross section having a slit. The female joint is inserted into the female joint through the slit of the female joint, and the claw-shaped engaging portion of the male joint and the claw-shaped engaging portion of the female joint are engaged with each other. A joint structure for segments, wherein a male joint of one segment and a female joint of the other segment are configured to be fitted to each other. 2. The male and female joints have a plate-shaped base having one side located inside the segment and the other side exposed at a joint surface of the segment, and an exposed end of the base. 2. The segment joining structure according to claim 1, wherein the segment joining structure is constituted by a common basic member including the claw-shaped locking portion provided on the portion and the anchor portion provided on one side of the base.