JP2003336493A - Joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a construction term by facilitating the joining of adjoining two members. <P>SOLUTION: This joint integrally joins the adjoining two members 25 and 25 and is provided with a male joint 2 which is provided in one member 25 and has a fitting member 3 provided with serrated cross-sectional recesses/ projections 4 in the outer circumferential surface and a female joint 10 which is provided in the other member 25 and has a fitting object member 11 provided with recesses projections to be mutually fitted with the recesses/projections 4 of the fitting member 3 of the male joint 2 in the internal circumferential surface. The fitting object member 11 is divided into a plurality of pieces and pushed in the direction of contracting its diameter by a pushing member 13. When fitting with the male joint 2, the female joint 10 is enlarged against the pushing member 13 to allow the fitting with the male joint 2, and after the completion of the fitting, it is contracted and retains the fitting state with the male joint 2. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint, and more specifically, to integrally joining two adjacent members, for example, adjacent ones of a plurality of segments provided on the inner surface of an excavated portion such as a subway tunnel. The present invention relates to a joint that is effective in doing so.

[0002]

2. Description of the Related Art Generally, when constructing a subway tunnel or the like by a shield method or the like, a segment such as a steel type segment, a filled concrete type segment, or a concrete type segment is provided on the inner surface of the excavated portion,
It covers and supports the excavated part.

An example of this type of segment is shown in FIG. This segment 41 is a solid concrete type segment, and is made of a circular arc plate-shaped concrete segment main body 42 and a rectangular plate-shaped metal longitudinal joint integrally provided on both longitudinal end faces of the segment main body 42. It is composed of plates 43, 43 and width direction joining plates 44, 44 made of metal in the shape of an arc plate and integrally provided on both end faces in the width direction of the segment main body 42. The width direction joining plate 44 is provided with holes 43a, 44a for screw insertion respectively penetrating therethrough, and the segment main body 43 corresponding to the holes 43a, 44a for screw insertion.
Each portion is provided with a hole 45 for tightening a screw of a predetermined size and depth.

Then, the segment 4 having the above structure
1 is continuously provided on the inner surface of the excavated portion such as a tunnel in the circumferential direction, and the holes 45 for screwing each of the segments 41 adjacent to each other in the circumferential direction are utilized, and the holes for screw insertion of the longitudinal joint plate 43 are used. A bolt (not shown) of the joint between 43a and 43a
Through, and a nut (not shown) of the joint is screwed into the threaded portion of the bolt and tightened to integrally join the segments 41, 41 adjacent to each other in the circumferential direction, and to form a ring-shaped segment ring body on the same circumference. Make up.

Then, such segment ring bodies are continuously provided in the excavation direction, and the segments 41, 41 of the segment ring bodies which are adjacent to each other in the excavation direction are integrally joined by the same method, and the inner surface of the excavated portion is The whole is covered with a plurality of segments 41, 41 .... In this way, the inner surface of the excavated portion is divided into a plurality of segments 41, 41.
It can be supported by.

[0006]

However, in the segment 41 having the above-mentioned structure, the segment main body 42 made of concrete is provided with the holes 45 for screw tightening at a plurality of positions. Strength will decrease. For this reason, after the plurality of segments 41, 41 ... Are provided on the inner surface of the excavated portion, the hole 45 for screw tightening of each segment 41 is closed with a filler to secure the strength of each segment main body 42. However, the work is troublesome, which causes the construction period to be extended.

Further, when the longitudinal joining plate 43 and the width joining plate 44 of the segments 41, 41 adjacent to each other in the circumferential direction and the excavating direction are joined, the work is performed by forming a hole 45 for screw tightening which is a narrow space. Since it has to be done by using it, the work efficiency is poor, which causes the construction period to be extended.

The present invention has been made in view of the above problems, and is intended for joining two adjacent members, for example, a plurality of adjacent segments of a plurality of segments provided on the inner surface of an excavated portion such as a tunnel. When used, it does not require any work to secure the strength after joining adjacent segments together, and it is easy to join adjacent segments, resulting in good work efficiency and a large construction period. It is an object of the present invention to provide a joint that can be shortened.

[0009]

In order to solve the above problems, the present invention employs the following means. That is, the invention according to claim 1 is a joint for integrally joining two adjacent members, and is a male joint provided on the one member and a male joint provided on the other member. And a female joint fitting with each other, wherein the female joint expands its diameter during fitting with the male joint to allow fitting with the male joint, and after completion of fitting. It is characterized in that the diameter is reduced to maintain the fitted state with the male joint. According to the joint of the present invention, when the male joint of one member and the female joint of the other member are fitted to each other,
When the female joint expands in diameter, fitting with the male joint is allowed, and after the fitting is completed, the female joint contracts to keep the fitted state with the male joint, and two adjacent members Will be joined together.

According to a second aspect of the present invention, there is provided a joint for integrally joining two adjacent members. The joint is provided in each of the male joint and the both members, and is fitted to the male joint. A female joint, wherein the female joint expands in diameter when fitted with the male joint to allow fitting with the male joint, and after fitting, reduces the diameter to form the male joint. It is characterized in that the fitting state with the joint is maintained. According to the joint according to the present invention, when the male joint and the female joints of both members are fitted to each other, the diameters of the both female joints are expanded to allow the fitting with the male joint, After the joining, the diameters of both the female type joints are reduced, whereby the female type joints are held in a fitted state, and the two adjacent members are integrally joined.

The invention according to claim 3 is the joint according to claim 1 or 2, wherein the male joint has a fitting member provided with irregularities on an outer peripheral surface thereof, and the female joint is an inner joint. A fitting member which is provided with a concavo-convex portion which is fitted to the concavo-convex portion on the peripheral surface, and which is divided into a plurality of pieces in the circumferential direction and whose diameter can be expanded, and a pressing member which presses the fitting member in a direction of reducing the diameter. Has and
The fitted member is expanded in diameter against the pressing member during fitting with the fitting member to allow fitting with the fitting member, and is pressed by the pressing member after completion of fitting. Then, the diameter is reduced to maintain the fitted state with the fitting member. According to the joint of the present invention, when the concave and convex portions of the fitting member of the male joint and the concave and convex portions of the fitted member of the female joint are fitted to each other, the fitted member of the female joint serves as the pressing member. The fitting of the male joint with the fitting member is allowed by expanding the diameter against it, and the fitted member is pressed by the pressing member after fitting to reduce the diameter, and the fitting state with the fitting member Will be held in.

The invention according to claim 4 is the joint according to claim 3, wherein the fitted member and the pressing member of the female joint are provided in a case, and the inner surface of the case and the fitted member. And a ball seat, and the ball seat allows the fitted member to move spherically relative to the case. According to the joint of the present invention, when the male fitting member and the female fitting member are fitted to each other, the fitting member is relatively positioned with respect to the case via the ball seat. Since the spherical movement is performed, the fitting between the fitting member and the fitted member becomes easy.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention shown in the drawings will be described below. 1 and 2 show a first embodiment of a joint according to the present invention.
Is for joining two adjacent members together, and includes a male joint 2 and a female joint 10 that can be fitted to the male joint 2.

The male joint 2 supports the fitting member 3 in the form of a rod made of metal, and the fitting member 3 made of metal, in which unevenness 4 having a saw-tooth cross section is continuously provided along the axial direction on the peripheral surface of the distal end portion. It is composed of a metal plate-shaped support member 6, and includes a fitting member 3 and a support member 6.
And are integrally connected by screwing, welding, or the like.

The female joint 10 has concave and convex portions 1 having a saw-tooth cross section which are fitted on the inner peripheral surface thereof to the concave and convex portions 4 of the fitting member 3 of the male joint 2.
2 are continuously provided along the axial direction, and are divided into a plurality (five in this embodiment) in the circumferential direction of the metal annular fitting member 11 that can be expanded, and a fitting member. The fitting member 1 is fitted on the outer peripheral side of the fitting member 11 and
1 is a ring-shaped pressing member 13 made of an elastic material such as urethane rubber for holding the fitted member 11 in a ring shape by pressing the fitting member 1 in a diameter reducing direction, and a metal holding member 11 for holding the fitted member 11 and the pressing member 13. It is composed of a case 14. A predetermined gap is formed between the inner peripheral surface of the case 14 and the outer peripheral surface of the pressing member 13, and the expanded diameter of the fitted member 11 is allowed by this gap. A guide member 15 is provided on the inner surface of the case 14, and the fitted member 11 is guided by the guide member 15 so as to be capable of expanding its diameter. In addition, the number of divisions of the fitted member 11 is not limited to five, and may be plural.

Then, by using the joint 1 composed of the male joint 2 and the female joint 10 having the above-mentioned constitutions, two adjacent members, for example, a plurality of segments provided on the inner surface of the excavated portion such as a tunnel or the like. In order to join adjacent parts of the two together, as shown in FIGS.
Is an arc plate-shaped concrete segment main body 30, and
Metallic longitudinal joining plates 31, 33 integrally provided on both longitudinal end faces of the segment body 30, and metallic widthwise joining plates 35, 37 integrally provided on both lateral ends of the segment body 30. In the case of the segment 25 of the solid concrete type consisting of and, the joints 26, 27, 28 and 29 of the segment 25 (both the joints 2 in the longitudinal direction
6, 27 and the widthwise joints 28, 29) are provided with the male joint 2 and the female joint 10.

Specifically, the male joints 2 and 2 are provided on one joint portion 26 in the longitudinal direction and one joint portion 28 in the width direction of the segment 25, respectively, and the other joint portion 27 in the longitudinal direction, and Female joints 10 and 10 are provided at the other joints 29 in the width direction. Although not shown, one joint portion 26 in the longitudinal direction and one joint portion 27 in the width direction.
The male joint 2 and the female joint 10 are provided in each of them, and the other joint portion 27 in the longitudinal direction and the other joint portion 29 in the width direction are provided.
The female type joint 10 and the male type joint 2 may be provided in each.

In this case, one longitudinal joining plate 31 and one width joining plate 35 are used as the supporting member 6, and the fitting member 3 is integrally provided on the supporting member 6 by welding, screwing, or the like.
The male joint 2 is formed at one joint portion 26 in the longitudinal direction and one joint portion 28 in the width direction.

The other longitudinal joining plate 33 is provided so as to pass through the elongated hole 34, and the other widthwise joining plate 37 is provided so as to penetrate through the hole 38.
On the back side of the other longitudinal joint plate 33 and the other width joint plate 37 corresponding to the above, the case of the female joint 10 so that the opening of the fitted member 11 communicates with the elongated holes 34 and 38. 14 are integrally connected by welding or the like, and the segment main body 30 is formed by placing concrete on the inside of both the joining plates 31 and 33 in the longitudinal direction and the joining plates 35 and 37 in the width direction to form the segment main body 30. The female joint 10 is formed on the other joint 27 and the other joint 29 in the width direction.

Then, the segment 2 having the above structure
5 is located on the inner surface of the excavated portion such as a tunnel, and FIG.
As shown in, two segments 2 that are adjacent in the circumferential direction
5, the end faces of the longitudinal direction of 25 are relatively close to each other, and as shown in FIG. 5, the fitting member 3 of the male joint 2 of one segment 25 is fitted to the female joint 10 of the other segment 25. Inserted inside the mating member 11,
Insert until the opposite end faces of are in contact with each other. In this case, when the fitting member 3 presses the fitting member 11, the fitting member 11 expands its diameter against the pressing member 13, and the fitting member 3 is allowed to be inserted. Composite member 11
And the irregularities 12 of are fitted to each other. Then, when the fitting is completed, the pressed member 13 presses the fitted member 11 in a direction in which the fitted member 11 is reduced in diameter, so that the fitted member 11 is held in an annular shape, and is fitted into the fitting member 2. The fitting member 3 is held in such a state that the fitting member 3 does not come out of the fitted member 11. As a result, the two segments 25, 25 adjacent to each other in the circumferential direction are integrally joined.

Then, a plurality of segments 25, 25 ... Are sequentially joined on the same circumference of the inner surface of the excavated portion such as a tunnel to form a ring-shaped segment ring body (not shown) in that portion. It Then, such a segment ring body is continuously formed in the excavation direction, and the male joint 2 of one segment 25 and the female joint 10 of the other segment 25 adjacent to each other in the excavation direction are fitted to each other, The segment ring bodies that are adjacent to each other in the excavation direction are integrally joined. By thus sequentially providing the segment ring bodies in the excavating direction, the entire inner surface of the excavated portion can be covered with and supported by a plurality of segments.

FIGS. 6 and 7 show a second embodiment of the joint according to the present invention. This joint 1 is applied to the joining of concrete type segments 25, and It has a male joint 2 and a female joint 10 having substantially the same configuration as that shown in the first embodiment.

That is, in this embodiment, since there is no metal plate supporting the male joint 2 and the female joint 10 on the segment 25 side, the male joint 2 and the female joint 10 are reinforced by the reinforcing member 7. , Are integrally provided on the joint portions 26, 27, 28, 29 (see FIG. 3) of the segment 25 via the reinforcing member 16.

Specifically, in the male joint 2, the reinforcing member 7 is composed of a metal connecting member 8 and an anchor 9, and the anchor 9 is integrally formed on the back surface side of the supporting member 6 via the connecting member 8. Link. In the female joint 10, the reinforcing member 16 is composed of a metal supporting member 17, a bracket 18, and an anchor 19, and the supporting member 17 has a case 14 of the female joint 10.
The bracket 18 and the anchor 19 are integrally connected so that the case 14 is sandwiched by the support member 17.

Then, the male mold joint 2 and the female mold joint 10 are positioned at predetermined positions of a mold (not shown), and in this state, concrete is placed inside the mold to form the segment 25, The male joint 2 is configured in each of the joint portions 26 in the longitudinal direction and the joint portion 28 in the width direction of the segment 25, and is formed in the other joint portion 27 in the longitudinal direction and the other joint portion 29 in the width direction. Each constitutes a female joint 10.

Then, the segment 2 having the above structure
5 is located on the inner surface of the excavated portion such as a tunnel, and as shown in FIG.
The longitudinal end faces of 25 are relatively close to each other, and as shown in FIG. 7, the fitting member 3 of the male joint 2 of one segment 25 is fitted to the fitting member of the female joint 10 of the other segment 25. It is inserted inside 11, and it inserts until both end faces of both segments 25 and 25 contact each other. In this case, when the fitting member 3 presses the fitting member 11, the fitting member 11 expands its diameter against the pressing member 13, and the fitting member 3 is allowed to be inserted. The unevenness 12 of the mating member 11 is fitted to each other. Then, when the fitting is completed, the pressed member 13 presses the fitted member 11 in the direction of reducing the diameter, whereby the fitted member 11 is held in an annular shape, and the fitting state with the fitting member 13 is maintained. The two segments 25, 25 that are adjacent to each other in the circumferential direction are joined together.

Then, a plurality of segments 25, 25, ... Are sequentially joined on the same circumference of the inner surface of the excavated portion such as a tunnel to form a ring-shaped segment ring body (not shown) in that portion. It Then, such a segment ring body is continuously formed in the excavation direction, and the male joint 2 of one segment 25 and the female joint 10 of the other segment 25 adjacent to each other in the excavation direction are fitted to each other, The segment ring bodies that are adjacent to each other in the excavation direction are integrally joined. By thus sequentially providing the segment ring bodies in the excavating direction, the entire inner surface of the excavated portion can be covered with and supported by the plurality of segments 25, 25 ...

FIGS. 8 and 9 show a third embodiment of the joint according to the present invention, and this joint 1 also has the above-mentioned second joint.
The present invention is applied to the joining of the concrete type segment 25 in the same manner as in the first embodiment, and the male joint 2 and the female joint 10 having substantially the same structure as those shown in the first embodiment. have.

That is, also in this embodiment, since there is no metal plate supporting the male joint 2 and the female joint 10 on the side of the segment 25, the male joint 2 and the female joint 10 are reinforced by the reinforcing member 7. , 16 and are integrally provided at the joint portions 26, 27, 28, 29 (see FIG. 3) of the segment 25.

More specifically, in the male joint 2, as in the second embodiment, the reinforcing member 7 is composed of the metallic connecting member 8 and the anchor 9, and the supporting member 6 is The anchor 9 is integrally connected to the back side via the connecting member 8. In the female joint 10, the reinforcing member 16 is composed of a metal supporting member 17, and the case 14 of the female joint 10 is connected to the supporting member 17.

Then, the male joint 2 and the female joint 10 are positioned at predetermined positions on the mold (not shown), and in this state, concrete is placed inside the mold to form the segment 25, The male joint 2 is configured in each of the joint portions 26 in the longitudinal direction and the joint portion 28 in the width direction of the segment 25, and is formed in the other joint portion 27 in the longitudinal direction and the other joint portion 29 in the width direction. Each constitutes a female joint 10. The female joint 10 has a long distance between the support member 17 and the joint surface of the segment 25.

Then, the segment 2 having the above structure
5 is located on the inner surface of the excavated portion such as a tunnel, and as shown in FIG.
The end faces of 25 in the longitudinal direction are made relatively close to each other, and as shown in FIG. 9, the fitting member 3 of the male joint 2 of one segment 25 is fitted to the fitting member 3 of the female joint 10 of the other segment 25. It is inserted inside 11, and it inserts until both end faces of both segments 25 and 25 contact each other. In this case, when the fitting member 3 presses the fitting member 11, the fitting member 11 expands its diameter against the pressing member 13, and the fitting member 3 is allowed to be inserted. The unevenness 12 of the mating member 11 is fitted to each other. Then, when the fitting is completed, the pressed member 13 presses the fitted member 11 in the direction of reducing the diameter, whereby the fitted member 11 is held in an annular shape, and the fitting state with the fitting member 3 is maintained. The two segments 25, 25 that are adjacent to each other in the circumferential direction are joined together.

Then, a plurality of segments 25, 25 ... Are sequentially joined on the same circumference of the inner surface of the excavated portion such as a tunnel to form a ring-shaped segment ring body (not shown) in that portion. It Then, such a segment ring body is continuously formed in the excavation direction, and the male joint 2 of one segment 25 and the female joint 10 of the other segment 25 adjacent to each other in the excavation direction are fitted to each other, The segment ring bodies that are adjacent to each other in the excavation direction are integrally joined. By sequentially providing the segment ring bodies in this way in the excavating direction, the entire inner surface of the excavated portion can be covered with and supported by the plurality of segments 25, 25 ...

FIG. 10 shows a fourth embodiment of the joint according to the present invention, and this joint 1 also has a concrete type segment similar to those shown in the second and third embodiments. The male joint 2 is applied to the joining of No. 25 and has substantially the same constitution as that shown in the above-mentioned embodiment (the male joint 2 has the same constitution as that shown in FIGS. 8 and 9). Therefore, the illustration and detailed description thereof are omitted) and the female joint 10.

That is, also in this embodiment, since there is no metal plate supporting the male joint 2 and the female joint 10 on the side of the segment 25, the male joint 2 and the female joint 10 are reinforced by the reinforcing member 7. , 16 and are integrally provided at the joint portions 26, 27, 28, 29 (see FIG. 3) of the segment 25.

In the female joint 10, the reinforcing member 16 is composed of a metal supporting member 17 and a plastic cylindrical holder 20, and the supporting member 17 has a case 1 of the female joint 10.
4 are connected, and the support member 17 and the case 14 are held inside the holder 20. In this case, a female screw portion 21 is provided on a portion of the inner surface of the case 14 located on the axis of the holder 20, and the tip portion of a screw rod (not shown) through which the holder 20 is inserted is inserted into the female screw portion 21. They are screwed together, and the rear end of the screw rod is fastened to the opening of the holder 20 via a washer (not shown), a nut (not shown), etc., and the support member 17 and the case 14 are fixed at predetermined positions of the holder 20. Hold on.

Then, the male joint (not shown) and the female joint 10 are located at predetermined positions of the form (not shown), and in this state, concrete is placed inside the form to make the segment 25. To form a male joint (not shown) at each of the joints 26 in the longitudinal direction and one joint 28 in the width direction of the segment 25, and the other joint 2 in the longitudinal direction is formed.
The female joint 10 is formed on each of the joints 7 and the other joint portion 29 in the width direction.

Then, the segment 2 having the above structure
5 is located on the inner surface of the excavated portion such as a tunnel, and the end faces in the longitudinal direction of the two segments 25, 25 adjacent in the circumferential direction are relatively close to each other, and the fitting member of the male joint of one segment 25 The other segment 25 (not shown)
Of the female joint 10 is inserted into the fitted member 11 until the end surfaces of the segments 25, 25 facing each other come into contact with each other. In this case, by being pressed by the fitting member, the fitted member 11 expands in diameter against the pressing member 13, and the insertion of the fitting member is allowed. The irregularities 12 are fitted to each other. And
When the fitting is completed, the fitting member 11 is pressed by the pressing member 13 in a direction in which the fitting member 11 is reduced in diameter, so that the fitting member 11 is held in an annular shape and is held in a fitting state with the fitting member. , Two segments 25, 25 adjacent to each other in the circumferential direction are integrally joined.

Then, a plurality of segments 25, 25 ... Are sequentially joined on the same circumference of the inner surface of the excavated portion such as a tunnel to form a ring-shaped segment ring body (not shown) at that portion. To be done. Then, such a segment ring body is continuously formed in the excavation direction, and the male joint of one segment 25 and the female joint 10 of the other segment 25 adjacent to each other in the excavation direction are fitted to each other to perform excavation. The segment ring bodies adjacent in the direction are integrally joined. By thus sequentially providing the segment ring bodies in the excavating direction, the entire inner surface of the excavated portion can be covered and supported by the plurality of segments 25.

FIG. 11 and FIG. 12 show a fifth embodiment of the joint according to the present invention, and this joint 1 also has the same construction as the second, third and fourth embodiments. Similarly, it is applied to the joining of the concrete type segment 25, and has the male joint 2 and the female joint 10 having substantially the same structure as that shown in the first embodiment.

That is, in this embodiment, the female joints 10 and 10 are provided at the joints of the two adjacent segments 25 and 25, respectively, and the male joint 2 is provided between the female joints 10 and 10. The male joint 2 is configured to be fitted with each other. The male joint 2 is composed only of a rod-shaped fitting member 3 in which irregularities 4 having a saw-tooth cross-section are continuously provided along the axial direction on the peripheral surfaces of both ends. Has been done. Also in this case, since there is no metal plate supporting the female joint 10 on the side of the segment 25, the female mold is the same as that shown in the second, third and fourth embodiments. The joint 10 is provided integrally with the joint portion of the segment 25 via the reinforcing member 16.
Specifically, in the female joint 10, the reinforcing member 16 is configured by a metal support member 17, and the case 14 of the female joint 10 is connected to the support member 17.

Then, the female mold joint 10 is positioned at a predetermined position of the form (not shown), and in this state, concrete is placed inside the form to form the segment 25, and the segment 25 is formed in the longitudinal direction. The female joint 10 is formed on each of the joint portions 26 and 27 and both of the joint portions 28 and 29 in the width direction.

The segment 2 having the above structure
5 is located on the inner surface of the excavated portion such as a tunnel.
As shown in, two segments 2 that are adjacent in the circumferential direction
The end members 5 and 25 in the longitudinal direction are relatively close to each other, the fitting member 3 of the male joint 2 is located between the segments 25 and 25, and as shown in FIG. Both ends of the member 3 are connected to the female joints 10 and 10 of both the segments 25 and 25.
Inserted inside the fitted members 11, 11 until the end surfaces of the segments 25, 25 facing each other contact each other. In this case, by being pressed by the fitting member 2, each fitted member 11 expands its diameter against the pressing member 13,
The insertion of the fitting member 3 is allowed, and the unevenness 4 of the fitting member 2 and the unevenness 12 of each fitted member 11 are fitted to each other. Then, when the fitting is completed, the fitting members 11 are held in an annular shape by being pressed by the pressing member 13 in a direction of reducing the diameter of the fitting members 11, and the fitting member 3 is fitted into the fitting member 3. Two segments 2 that are held together and are circumferentially adjacent
5, 25 are joined together.

Then, a plurality of segments 25, 25, ... Are sequentially joined on the same circumference of the inner surface of the excavated portion such as a tunnel to form a ring-shaped segment ring body (not shown) in that portion. It Then, such a segment ring body is continuously formed in the excavation direction, and the male joint 2 is fitted to the female joints 10 and 10 of the one segment 25 and the other segment 25 which are adjacent to each other in the excavation direction, and the excavation is performed. The segment ring bodies adjacent in the direction are integrally joined. By thus sequentially providing the segment ring bodies in the excavating direction, the entire inner surface of the excavated portion can be covered with and supported by the plurality of segments 25, 25 ....

FIG. 13 shows a sixth embodiment of the joint according to the present invention. This joint 1 comprises a female joint 10
A spherical seat 30 is provided between the inner surface of the case 14 on the inlet side and the axial end surface of the fitted member 11 so that the fitted member 11 can move relative to the case 14 in a spherical manner. Since the other configurations are similar to those shown in the first embodiment, detailed description thereof will be omitted.

The ball seat 30 is fixed to the inner surface of the case 14 on the inlet side and has a concave ball seat half 31 in which the inner surface of the case 14 is formed into a concave surface 32 and the fitted member 11.
Of the convex spherical seat half 33, which is fixed to the axial end surface of the case 14 and has an outwardly facing surface of the case 14 formed on the convex surface 34. The spherical surface half portion 33 is engaged with the convex surface 34 so as to be capable of spherical movement. Although not shown, the convex spherical seat half portion 33 may be fixed to the inner surface on the inlet side of the case 14, and the concave spherical seat half portion 31 may be fixed to the axial end surface of the fitted member 11. .

Then, the joint 1 according to this embodiment is applied to the joining of the segment 25 of the solid concrete type as in the case of the first embodiment, or the second, the third, and the second. It is applied to the joining of the concrete type segment 25 in the same manner as shown in the fourth and fifth embodiments, and the segment 25 is located on the inner surface of the excavated portion such as a tunnel, and the two segments 2 adjacent to each other in the circumferential direction.
The end faces 5 and 25 in the longitudinal direction are relatively close to each other (see FIGS. 4 and 6), and the male joint 2 of one segment 25 is
Of the fitting member 3 of the other segment 25 into the fitted member 11 of the female joint 10 of the other segment 25,
5 are inserted until the opposite end faces of 5 come into contact with each other (see FIGS. 5 and 7). In this case, the ball seat 30 is interposed between the case 14 and the fitted member 11, and the ball seat 30
Since the concave spherical seat half part 31 and the convex spherical seat half part 33 of FIG. 2 make a spherical movement relative to each other, the fitting member 3 of the male joint 2 to the fitted member 11 of the female joint 10. Is easy to insert.
Then, by being pressed by the fitting member 2, each fitted member 11 expands its diameter against the pressing member 13, and the fitting member 3
Insertion is allowed, and the unevenness 4 of the fitting member 3 and the fitted member 1
The unevenness 12 of 1 is fitted to each other. Then, when the fitting is completed, the pressed member 13 presses the fitted member 11 in a direction of reducing the diameter of the fitted member 11, so that the fitted member 11 is held in an annular shape and is fitted into the fitting member 13. Is held in
Two segments 25, 25 adjacent to each other in the circumferential direction are integrally joined.

Then, a plurality of segments 25, 25, ... Are sequentially joined on the same circumference of the inner surface of the excavated portion such as a tunnel to form a ring-shaped segment ring body (not shown) in that portion. It Then, such a segment ring body is continuously formed in the excavation direction, and the male joint 2 of one segment 25 and the female joint 10 of the other segment 25 adjacent to each other in the excavation direction are fitted to each other, The segment ring bodies that are adjacent to each other in the excavation direction are integrally joined. By thus sequentially providing the segment ring bodies in the excavating direction, the entire inner surface of the excavated portion can be covered with and supported by the plurality of segments 25, 25 ... The joint shown in each of the above-described embodiments is configured by appropriately selecting the segment construction method to join the segments in the circumferential direction of the tunnel (joining as an inter-segment joint) and join the segments in the axial direction of the tunnel ( Joining as a joint between rings)
It can be used for both. The segment provided with the joint according to the present invention may be various segments such as a steel type segment, a filled concrete type segment, and a concrete type segment.

[0049]

As described above, according to the joint of the present invention, two adjacent members, for example, a plurality of segments provided on the inner surface of an excavated portion such as a tunnel, can be joined together. When applied, the male joint of one segment and the female joint of the other segment which are adjacent to each other are fitted to each other, whereby the two segments are integrally joined. In this case, the female joint expands its diameter to allow fitting with the male joint, and then the female joint contracts its diameter to maintain the fitted state with the male joint. It will be easy to join the two segments together, and the construction period will be greatly shortened. Further, after joining two adjacent segments together, no complicated work such as filling a filling material to secure the strength of the segments is not necessary at all, which can also significantly reduce the construction period. You can do it.

Further, by locating a male joint between two adjacent segments and fitting the male joint and the female joints of both adjacent segments to each other, both segments are integrally joined. Will be done. Also in this case, the female joint expands its diameter to allow the male joint to be fitted, and then the female joint is contracted to maintain the fitted state with the male joint. Therefore, it becomes easy to join two adjacent segments to each other, and the construction period can be significantly shortened. And in this case also, after joining two adjacent segments together,
Since the complicated work of filling the filling material to secure the strength of the segment is not necessary at all, the construction period can be shortened significantly.

Further, the unevenness provided on the outer peripheral surface of the fitting member of the male joint and the unevenness provided on the inner peripheral surface of the fitted member of the female joint are fitted to each other, and the fitting member is pressed by the pressing member. Since it is pressed in the diameter reducing direction, the fitting member and the fitted member can be reliably held in the fitted state,
Two adjacent segments can be held in a stable joined state for a long period of time.

Further, the ball seat interposed between the case of the female joint and the member to be fitted causes the member to be fitted to make a spherical movement relative to the case. It is easy to fit the mating member and the mating member of the female joint,
It becomes easy to join two adjacent segments, and the construction period can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a sectional view showing the entire first embodiment of a joint according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory diagram showing an application example of the first embodiment of a joint according to the present invention.

FIG. 4 is a partial enlarged cross-sectional view of FIG. 3 and is an explanatory view showing a state before joining.

FIG. 5 is a partially enlarged cross-sectional view of FIG. 3 and is an explanatory view showing a state after joining.

FIG. 6 is a partially enlarged cross-sectional view showing an application example of the second embodiment of the joint according to the present invention, and an explanatory view showing a state before joining.

7 is an explanatory diagram showing a state after joining in FIG.

FIG. 8 is a partially enlarged cross-sectional view showing an application example of the third embodiment of the joint according to the present invention, which is an explanatory view showing a state before joining.

9 is an explanatory diagram showing a state after joining in FIG. 8. FIG.

FIG. 10 is a partially enlarged cross-sectional view showing an application example of a fourth embodiment of a joint according to the present invention.

FIG. 11 is a partially enlarged cross-sectional view showing an application example of the fifth embodiment of the joint according to the present invention, which is an explanatory view showing a state before joining.

FIG. 12 is an explanatory diagram showing a state after joining in FIG. 11.

FIG. 13 is a cross-sectional view of the female joint of the sixth embodiment of the joint according to the present invention.

FIG. 14 is an explanatory view showing a segment to which a conventional joint is applied.

[Explanation of symbols]

1 joint 2 Male joint 3 fitting members 4, 12 unevenness 10 female fitting 11 Fitted member 13 Pressing member 14 cases 25 segments 30 ball seat

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hiroki Someya             12-12 Yurakucho, Chiyoda-ku, Tokyo Stone             Kawashima Kenzai Kogyo Co., Ltd. (72) Inventor Hirohide Hashimoto             12-12 Yurakucho, Chiyoda-ku, Tokyo Stone             Kawashima Kenzai Kogyo Co., Ltd. (72) Inventor Masanori Wakabayashi             12-12 Yurakucho, Chiyoda-ku, Tokyo Stone             Kawashima Kenzai Kogyo Co., Ltd. (72) Inventor Akihiro Minesaki             12-12 Yurakucho, Chiyoda-ku, Tokyo Stone             Kawashima Kenzai Kogyo Co., Ltd. (72) Inventor Toshio Mochizuki             4 Kobayashi at 1040 Hoshiyama, Fujinomiya City, Shizuoka Prefecture             Business (72) Inventor Chihiro Watanabe             4 Kobayashi at 1040 Hoshiyama, Fujinomiya City, Shizuoka Prefecture             Business (72) Inventor Yukio Kato             4 Kobayashi at 1040 Hoshiyama, Fujinomiya City, Shizuoka Prefecture             Business F-term (reference) 2D055 BA01 GC04                 3H111 AA01 BA03 BA07 CA35 DA26                       DB15                 3J001 FA06 GB01 JA07 JC02 JC06                       KB04                 3J037 AA02 DA05 DB02 DC02

Claims (4)

[Claims] 1. A joint for integrally joining two adjacent members, wherein a male joint provided on the one member,
The male joint is provided on the other member and includes a female joint that is fitted to the male joint, and the female joint expands in diameter when the male joint is fitted to the male joint. A joint that allows fitting with the joint and reduces the diameter after completion of the fitting to maintain the fitted state with the male joint. 2. A joint for integrally joining two adjacent members, which comprises a male joint and a female joint provided on each of the both members and mutually fitted with the male joint. , The female joint is expanded in fitting with the male joint to allow fitting with the male joint, and is contracted after fitting to be fitted with the male joint A joint characterized by holding. 3. The joint according to claim 1, wherein the male joint includes a fitting member having an unevenness on an outer peripheral surface, and the female joint has the unevenness on an inner peripheral surface. An uneven member that fits with each other is provided, and the member includes a fitted member that is divided into a plurality of pieces in the circumferential direction and can be expanded in diameter, and a pressing member that presses the fitted member in a direction of reducing the diameter. The fitted member expands its diameter against the pressing member at the time of fitting with the fitting member to allow fitting with the fitting member, and is pressed by the pressing member after fitting is completed. The diameter of the joint is reduced to maintain a fitted state with the fitting member. 4. The joint according to claim 3, wherein the fitted member and the pressing member of the female joint are provided in a case, and a ball seat is provided between an inner surface of the case and the fitted member. And a spherical seat that allows the fitted member to move spherically relative to the case.