JP3340706B2 - Lining segment, joining structure of lining segment, and joining method of lining segment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining segment for tubularly lining the inside of a tunnel formed by excavating a ground, a joining structure of lining segments, and a lining segment. It relates to a joining method.

[0002]

2. Description of the Related Art In recent years, a tunnel tunneling method has become popular in which a tunnel excavation method (hereinafter referred to as a shield method) is less likely to loosen a ground to be excavated and has less influence on a surrounding area. This shield method uses a steel cylindrical shield machine equipped with a jack inside, and in the space created by the excavation and propulsion, the tail part of the shield machine is made of steel to keep the excavated part. Alternatively, arcuate plate-shaped segments, which are blocks made of reinforced concrete, are assembled into a cylinder to form a lining ring (segment ring), and these rings are connected in the axial direction to make the tunnel inner wall side cylindrical. This is a method of moving forward while lining.

As an example of a joining structure between segments and between rings in this shield method, a technique disclosed in JP-A-6-346696 as shown in FIG. 11 and a technique disclosed in JP-A-10-121892 as shown in FIG. The technology disclosed in Japanese Patent Application Laid-Open Publication No. H10-209,055 is known. In the segment joining structure disclosed in JP-A-6-346696 shown in FIG. 11, joint fittings 82, 82 are provided at joint portions 81, 81 of the segments 8, 8A to be joined, and the joint fittings 82, 82 are attached. The segments 8, 8 are overlapped and fixed by sandwiching them with a holding metal member 82 provided on the ring joint surface 8a of the segment 8B adjacent in the axial direction.
It is configured to join between A and between the rings. Specifically, each of the segments 8, 8A to be joined includes:
A recess 8 which is recessed in the axial direction adjacent to the fittings 81, 81A.
3 and 83 are formed on the other hand, while the side plate portion 8 is provided on the holding metal member 82 so as to face the metal member 82 at a predetermined interval.
2a and 82a are provided. Then, with the segment joint surfaces abutting each other, the respective concave portions 83, 83
Then, the side plates 82a, 82a of the holding metal fitting 82 are inserted, respectively, to function as wedges of the segments 8, 8A for connecting the holding metal 82, and these segments are connected.

[0004] Further, as shown in FIG.
The joint structure of segments disclosed in Japanese Patent No. 892 is a joint structure of segments which are arranged adjacent to each other in a circumferential direction and which constitute a segment ring by joining ends 9a and 9b along an axial direction. As shown in this figure, joint holes 91, 91 are respectively provided in ring joint surfaces 9c, 9c near the side end surfaces along the circumferential direction of the segments 9, 9A to be joined, and the side end surfaces of the end portions 9a, 9b project. In the fitted state, the pin portions 93, 93 on both sides of the U-shaped joint member 92 are inserted into the joint holes 91, 91 from the tunnel axial direction. Thus, the joint member 92 is connected to the segment 9,
Both segments 9, 9A are joined by straddling between 9A. Further, the segments 9, 9A are joined via joint members 92, 92 on both ring joint surfaces near the ring joint surface in the tunnel axial direction.
Japanese Patent Application Laid-Open No. 0-121892 discloses a state in which two U-shaped joint members are joined, that is, two parallel pin portions are projected in a direction opposite to the projecting direction of each pin portion to form an H shape. Thus, a configuration is disclosed in which the segments can be joined together with the rings together with the segments.

[0005]

However, such a conventional joining structure of segments has the following problems. Both of the publications have a configuration in which the metal fittings or the joint member can be joined simply by inserting the metal fittings or the joint member into each of the joining segments where the side end faces are joined to each other. It is configured such that there is a margin for absorbing the error. Therefore, even if these segments or joint members are inserted to join the segments, a predetermined fastening force cannot be obtained for these segments, and there is a problem that the waterproofness of the joined segment end faces is inferior. In the configuration shown in each conventional example, in order to solve the above-mentioned problem, it is necessary to join both segments by a joint member with a predetermined fastening force at other places, but the manufacturing cost is increased accordingly. Not only that, it also takes time and effort for the production.

In order to improve the water stopping performance,
It is necessary to improve the accuracy of the joint, but if the accuracy is improved, the assembly error of the segment cannot be repaired. In this regard, in the above two conventional examples, a slight assembling error can be repaired. However, if the joining segments are displaced in the radial direction, if the clamping metal or the joint member is inserted into one of the concave portions or the insertion holes, Cannot be inserted into the concave portion or the insertion hole, and the clamp or the joint member cannot be attached. Therefore, there is a possibility that the segments cannot be assembled.

The object of the present invention has been made in view of the above circumstances, and it is an object of the present invention to be able to easily and reliably join segments to be joined, It is an object of the present invention to provide a lining segment, a joining structure of the lining segment, and a joining method of the lining segment, which can be repaired so that the two segments can be firmly joined, and whose cost is low.

[0008]

In order to solve the above problems, according to the first aspect of the present invention, a plurality of tubes are connected in a circumferential direction and an axial direction of the tunnel to cover the inner wall side of the tunnel in a cylindrical shape. Segment, for example, as shown in FIG.
As shown in FIGS . 4 and 6 , a segment body 2 (including 2A and 2B) in the shape of a circular arc plate, and the segment body 2
The first joint member (for example, the pin member 4) provided on one end face 21 along the circumferential direction of the
4A) and a second joint member (for example, a cap member 6 or the like) provided on the other end surface 22 along the circumferential direction of the segment main body 2 so as to extend in the axial direction. Numeral 4 is a rod-shaped body when combined with a first joint member 4 similarly provided on another segment main body 2A circumferentially adjacent to the segment main body 2, and the second joint member 6 is , The segment body 2
The first joint members 4, 4 similarly formed on two other segment bodies 2, 2 adjacent to each other in the axial direction respectively contact the two other segments 1, 1 (1A) to form a rod. When the second joint member 6 is externally fitted to at least one of the first joint member 4 and the second joint member 6. In addition, a drawing surface (tapered surface 42) for drawing the first joint members 4 and 4 to each other is formed .
The joint member 46 has the second joint attached to the first joint member 46.
When the member 661 is externally fitted, the engagement of the second joint member 661
The engaged portion (protrusion 463) engaging with the portion (groove 662)
It is characterized by being formed .

According to the first aspect of the present invention, the second joint member has a first joint member similarly formed on two other segment bodies adjacent to the segment body in the axial direction. A ring-shaped or cylindrical member that is fitted to a rod-shaped body that is formed by bringing two other segments into contact with each other, and at least one of the first joint member and the second joint member has a second joint member. When the joint members are fitted to each other, a drawing surface is formed to draw the first joint members together, so that another lining segment is disposed adjacent to the segment body in the circumferential direction, and By simply fitting the second joint member of the lining segment axially adjacent to the segment main body to the rod-shaped body formed by the first joint member of the segment, the segment main body is circumferentially wrapped. It can be easily and reliably joined the segment body of another lining for segments of placement of the segment body and axially.

In particular, at least one of the first joint member and the second joint member has a drawing surface for drawing the first joint members together when the second joint member is fitted to the outside. Therefore, even when an assembling position between the lining segments in the circumferential direction provided with the first joint members is slightly shifted or the like, an assembly error occurs, the first joint members are connected to the second joint member. When externally fitted, the second joint member is in an externally fitted state in a state where it is drawn and connected, and the error is repaired, and the lining segments provided with the first and second joint members are accurately connected to each other. Can be joined. Therefore, the tunnel can be easily connected in the circumferential direction and the axial direction, and the inner wall side of the tunnel can be covered in a cylindrical shape. Further, since the joining operation between the segments is facilitated, automatic assembly by a machine can be performed.

When the second joint member is fitted to the rod-shaped body, the first joint member is drawn, and
The other lining segments adjacent to each other in the circumferential direction in which the joint member is provided can be attracted to each other, and these lining segments can be reliably joined to each other.
In addition, since it is configured in this manner, all the lining segments can be equally divided into the same shape, and the inner wall side of the tunnel can be wrapped in a cylindrical shape. It can be economical.

Further, between the lining segments in the circumferential direction,
Since the first and second joint members can be joined between the segments in the axial direction, it is not necessary to join the joints separately using joints, which is more economical. Also, unlike the conventional case, it is not necessary to use a joining member such as a bolt or a metal member for joining between the circumferential lining segments or between the axial lining segments, so that labor can be saved, and the construction period is shortened. Can be achieved. In addition,
When the second joint member is externally fitted to the first joint member,
The engaging portion of the second joint member is engaged with the engaged portion of the one joint member.
So that the second joint member is externally fitted to the first joint member.
From the second joint member to the first joint
The members can be prevented from coming off, and
The bond can be a stronger bond. Therefore,
A lining segment provided with a first joint member;
Joining with the lining segment where the joint member is provided
It can be more robust and secure,
Securely join lining segments that are adjacent in the direction
Can be.

According to a second aspect of the present invention, a plurality of tunnels are provided.
By connecting in the circumferential direction and axial direction of the tunnel inner wall side
A lining segment for tubular lining, for example,
For example, as shown in FIGS. 1 to 4 and FIG.
Segment 2 (including 2A, 2B) and this segment
On one end face 21 along the circumferential direction of the
A first joint member (e.g., pin
Members 4 and 4A) and the circumferential direction of the segment main body 2.
Along the other end surface 22 along the axis so as to extend in the axial direction
Provided second joint member (for example, cap member 6 etc.)
The first joint member 4 is circumferentially connected to the segment body 2.
The other segment body 2A adjacent in the direction
By joining with the first joint member 4 that has been
Wherein the second joint member 6 comprises the segment
Body 2 and two other segment bodies axially adjacent to each other
First joint members respectively formed in the same manner as in Nos. 2 and 2
4 and 4 are the two other segments 1, 1 (1A)
Abuts on the rod-shaped body 40 that has become a rod-shaped body
The first joint member 4 and the second joint member 4
At least one of the two joint members 6 has a second joint
When the member 6 is externally fitted, the first joint members 4, 4 are mutually connected.
A pulling surface (tapered surface 42) is formed.
The second joint member 666 has at least one cutout.
The notch 667 is a leading edge 666 of the second joint member 666.
a so as to extend in the axial direction (B) from
It is characterized by that.

According to the second aspect of the present invention, the second connection
Two hand members are axially adjacent to the segment body.
Formed in the same manner on other segment bodies
A first joint member abuts the two other segments
Ring or tube that fits outside the rod-shaped body
The first joint member and the second joint member
When the second joint member is externally fitted to at least one of them,
Attraction surfaces for attracting the first joint members to each other
Is formed in the circumferential direction of the segment body.
Place other lining segments adjacent to each other
The rod-shaped body made of the first joint member of the segment
Of the lining segment axially adjacent to the
2 Just by fitting the joint member outside, the segment body is
Segment body and axial direction of circumferential lining segment
Easy and secure with the segment body of other lining segments
Can be joined. In particular, the first joint member and the second
At least one of the joint members includes a second joint member.
When the first and second fittings are fitted to each other, the first joint members are drawn toward each other.
The first joint member is
Circumferential lining segments provided separately
If there is an assembly error such as the assembly position is slightly shifted
Even in this case, the first joint members are connected to the second joint member.
When fitted outside, the second joint portion is pulled and joined.
The material is in an externally fitted state, and the error is repaired.
For lining provided with first and second joint members
It is possible to accurately join each other. Therefore,
Easy connection in the circumferential and axial directions of the channel
In this case, the inner wall side of the tunnel can be covered in a tubular shape. Sa
Furthermore, since the joining work between segments becomes easier,
Automatic assembly by machine can also be performed.

[0015] The second joint member is fitted over the rod-shaped body.
At this time, the first joint member is drawn,
For other linings adjacent in the circumferential direction where the joint member is provided
Attracting segments, these lining segments
It is possible to surely join the members.
In addition, because of this structure,
The same shape with equal divisions on the inner wall side of the tunnel.
It can be wrapped in a tubular shape, and can be used to mold lining segments.
Formwork costs can be economical.

Further, between the lining segments in the circumferential direction,
Between the segments in the axial direction to the first and second joint members
More joints, so separate joints for each
It is not necessary to join using
You. Also, unlike before, between circumferential lining segments
Bolts, hardware, etc. for joining between lining segments in the shaft and axial direction
It is not necessary to use the joining member of
The construction period can be shortened. In addition,
In the second joint member, at least a notch portion is provided in the second joint member.
Formed to extend axially from the leading edge of the member
So that the second joint member is externally connected to the first joint member.
When fitting, the distal end of the second joint member is connected to the first joint part.
Since it is slightly expanded by the material, the second joint member is
It can be easily extrapolated to the first joint member, so that the second joint member
Can be easily fitted to the first joint member.

According to a third aspect of the present invention, there is provided the cover according to the first aspect.
In the engineering segment, for example, as shown in FIG.
The first joint member 4 of the segment body 2 is
Other segment body 2A circumferentially adjacent to the
To the first joint member 4A provided similarly.
The cross-sectional shape of the rod-shaped body 40 is
It is characterized by being formed into a square shape
You.

According to the invention of claim 3, according to claim 1,
The same effects as those of the invention described above can be obtained, and
The first joint member of the segment body is
In the same way as the other segment body circumferentially adjacent to the body
A rod-like shape formed by coupling with the first joint member provided
Formed so that the cross section of the body is circular or polygonal
So that the first joint members are joined together.
When the second joint member is easily fitted to the outside of the rod-shaped body
Even if the positions of the first joint members are slightly shifted,
The first joint members were easily fitted to each other and pulled together.
State.

That is, the segment body to be joined is
The direction is of course shifted in the radial direction, in other words, the circumferential direction
Assembly error of the lining segment
In which direction the deviation (error) is
Even if it occurs, the second joint member may be externally fitted to the first joint member.
The first joint is attached to the inner surface of the second joint member when it is externally fitted.
Since the hand members abut evenly, these deviations (errors)
Repair the difference), pull the first joint members together, and
Segment bodies located in
Wear. In addition, this pulling makes it possible to
Lining placed axially adjacent to the segment body
Segments can be joined.

[0020] The invention according to claim 4 is the invention according to claims 1-3.
In the lining segment according to any one of the preceding items,
For example, as shown in FIG. 4, the first joint member 4 (4A)
Are outer surfaces 2a, 2a of the segment body 2 (2A).
And are not provided on the inner surfaces 2b, 2b.
It is characterized by that.

According to the invention described in claim 4, claims 1 to 1 are provided.
3. To obtain the same effects as those of the invention described in any one of 3.
And the first joint member is connected to the segment.
Provided so as not to be exposed on the outer and inner surfaces of the body
So that the second joint member is externally fitted to the first joint member.
These first and second joint members are also exposed on the outer and inner surfaces.
And is affected by the environment inside and outside the segment body.
Harder and more durable against rust and corrosion
You. For example, when the first joint member is made of steel,
This effect is remarkable.

The outer surface and the inner surface of the segment main body are as follows.
A tubular body was formed by lining the tunnel inner wall side in a tubular shape
The outer surface of the cylindrical body that contacts the ground,
This shows the side surface. In other words, the lining segment
The inner and outer surfaces to be formed are arc-shaped curved surfaces.
The inner surface and the longer arc are the outer surface.

According to a fifth aspect of the present invention, a plurality of the lining segments according to any one of the first to fifth aspects are connected in a circumferential direction and an axial direction of the tunnel to make the inner wall side of the tunnel cylindrical. This is a joining structure of lining segments for lining, for example, as shown in FIG. 2, the lining segments 1, 1A arranged adjacently in the circumferential direction are brought into contact with each other, and One end surface 21, 2 along the circumferential direction of each segment main body 2, 2 A of the engineering segment 1, 1 A
The first joint members 4 and 4A provided on the first joint member 4 are connected to each other by a rod-shaped body 40 which is connected to the other lining segments 1B adjacent in the axial direction of the lining segments arranged adjacent to each other in the circumferential direction. Is characterized in that the second joint member 6 formed on the segment main body 2B is externally fitted.

According to the fifth aspect of the present invention, the rod-shaped body is formed by joining the first joint members provided on the lining segments arranged adjacently in the circumferential direction.
Since the second joint member formed on the segment body of another lining segment axially adjacent to the lining segment arranged adjacent to the circumferential direction is externally fitted, the first joint member is formed. With the second joint member, the lining segments arranged adjacent to each other in the circumferential direction and the axial direction can be joined at a time. In addition, just by externally fitting the second joint member to a rod-like body formed by joining the first joint members,
Since the lining segments arranged adjacent to each other in the circumferential direction and the axial direction can be joined at one time, the joining operation is facilitated, and the construction period can be shortened. Furthermore, a joining member such as a bolt or a metal member for joining circumferential lining segments to each other and a joining member such as a bolt or metal member for joining axially adjacent lining segments to each other are separately provided. Therefore, not only is it economical, but also it is not necessary to separately join each of them, and the construction period can be further reduced.

According to a sixth aspect of the present invention, a plurality of the lining segments according to any one of the first to fourth aspects are connected in a circumferential direction and an axial direction of the tunnel, so that the inner wall side of the tunnel has a cylindrical shape. A method of joining lining segments to be lining,
For example, as shown in FIG.
1A in the circumferential direction, the first joint members 4 and 4A of the lining segments 1 and 1A are brought into contact with each other so as to be joined together to form a rod 40, and then the rod 40
Then, the second joint member 6 of another lining segment axially adjacent to the lining segment arranged in the circumferential direction is externally fitted to the lining segment 1 arranged in the circumferential direction. , 1A are joined together, and the other lining segments are joined in the axial direction of the lining segments 1, 1A joined in the circumferential direction.

According to the invention described in claim 6 , the lining segments are arranged circumferentially in the first direction.
The joint members are connected and arranged so as to form a rod-like body, and then, on the rod-like body, for another lining adjacent to the lining segment arranged in the circumferential direction in the axial direction. By externally fitting the second joint member of the segment, the lining segments arranged in the circumferential direction are joined to each other, and the other lining segments joined in the circumferential direction are axially connected to the other lining segments. The joining segments can be joined, so that the covering segments can be easily connected in the circumferential direction and the axial direction, and the inner wall side of the tunnel can be covered in a tubular shape. Therefore, it is possible to shorten the operation time of assembling the lining segment and lining the inner surface of the tunnel into a cylindrical shape.

( 7 ) A plurality of lining segments 1 (including 1A) are arranged adjacent to each other in the circumferential direction of the tunnel, and the adjacent lining segments (1, 1
A) A joining structure of lining segments for connecting the insides of the tunnels to lining the inner wall side of the tunnel in a cylindrical shape, for example, as shown in FIGS.
1A is an arc plate-shaped segment body 2, 2 respectively.
A and a first joint member (for example, a pin member 4, 4A) provided on one end surface 21, 21a along the circumferential direction of the segment body 2, 2A so as to extend in the axial direction.
(4)), and the first joint member 4 of the one lining segment 1 is formed in the same manner as the other segment main body 2A circumferentially adjacent to the segment main body 2 of the one lining segment 1. A rod-shaped rod 40 is formed by being connected to the first joint member 4A provided in this manner.
0, an annular or cylindrical second joint member (for example, a cap member 6) is fitted to the outside, the lining segments 1, 1A are joined together, and the first joint members 4, 4A and the second joint member 6 are joined together. the at least one 4,4A of out, when the second joint member 6 is fitted, faces drawn draw was what first joint member 4,4A from one another (tapered surface 42) is formed, the first joint member 46 In the first joint member 46,
When the second joint member 661 is externally fitted, the second joint member
661 to be engaged (groove 662).
463) is formed.

According to the invention as set forth in claim 7 , the rod-like body is formed by connecting the first joint members provided on the lining segments arranged adjacently in the circumferential direction.
The second joint member is externally fitted, and the first joint member and the second
When at least one of the joint members is formed with a drawing surface that draws the first joint members together when the second joint member is fitted to the outside, the first joint member and the second joint member can be used together. The lining segments arranged adjacent to each other in the circumferential direction can be easily joined. Therefore, the lining segments arranged adjacent to each other in the circumferential direction are joined only by externally fitting the second joint member to the rod-shaped body in which the first joint members are connected to each other. The joining operation of the working segments becomes easy, and the construction period can be shortened. Also, the first joint portion
Maintaining the state in which the second joint member is externally fitted to the material,
Make sure that the first joint member does not come off from the joint member.
The joint between the two joint members can be made stronger.
Can be. Therefore, the first joint member is provided.
More firmly and securely joins lining segments
And can be.

[0029] The invention according to claim 8 provides a plurality of lining cells.
(Including 1A) in the circumferential direction of the tunnel
And the adjacent lining segments (1, 1
A) The inner wall side of the tunnel is cylindrical by connecting
The joining structure of the lining segments to be lining
For example, as shown in FIGS.
G and 1A are arc plate-shaped segment bodies, respectively.
2, 2A and the circumferential direction of the segment body 2, 2A.
At the other end surface 21, 21a, extend in the axial direction.
The first joint member (for example, the pin member 4, 4A
(4)), and the first joint of one of the lining segments 1
The hand member 4 is connected to the segment of the one lining segment 1.
Other segment body circumferentially adjacent to the body 2
2A is connected to the first joint member 4A similarly provided.
To form a rod-shaped rod 40, and the rod-shaped
The second joint member (for example, the cap portion)
Material 6) is externally fitted to the lining segment 1, 1A
And the first joint members 4, 4A and the second joint portion are joined together.
At least one of the members 6, 4A has a second joint portion.
When the member 6 is externally fitted, the first joint members 4 and 4A are mutually connected.
A pulling surface (tapered surface 42) is formed.
The second joint member 666 has at least a notch
The portion 667 is moved from the leading edge 666a of the second joint member 666.
Be formed to extend in the axial direction (B)
It is characterized by.

[0030] According to the eighth aspect of the present invention, it is possible to set the position adjacent to the circumferential direction.
Provided in each of the lining segments arranged in contact with each other
Into a rod-shaped body in which the first joint members are joined together,
The second joint member is externally fitted, and the first joint member and the second
A second joint member is provided on at least one of the joint members.
At the time of external fitting, the first joint members are attracted to each other
Since the drawing surface is formed, the first joint member and
And a lining arranged adjacent to the second joint member in the circumferential direction
Segments can be easily joined. Accordingly
The first joint member is connected to a rod-shaped body,
Just by fitting the second joint member outside, it is arranged adjacently in the circumferential direction.
Lining segments are joined and these are adjacent in the circumferential direction.
Joining work for the lining segments that
Can be shortened. Also, the second joint portion
When the material is externally fitted to the first joint member, the second joint member
The tip is slightly expanded by the first joint member.
Therefore, the second joint member can be easily extrapolated to the first joint member.
Therefore, the second joint member can be easily attached to the first joint member.
Can be externally fitted.

According to the ninth aspect of the present invention, there is provided the seventh or eighth aspect.
In the joining structure of the lining segment described, for example,
As shown in FIG. 4, the cross-sectional shape of the rod 40 is circular.
Shape or polygonal shape.
It is a sign. According to the ninth aspect of the present invention,
The same effect as that of the invention described in Item 7 or 8 can be obtained.
And the cross-sectional shape of the rod is circular or polygonal.
Since it is formed to have a shape, this rod
The second joint member is easily fitted to the outside, and the first joint member is
Even if the positions of the members are slightly shifted,
To bring the first joint members together.
Can be. In other words, the segment body to be joined is
The direction is of course shifted in the radial direction, in other words, the circumferential direction
Assembly error of the lining segment
In which direction the deviation (error) is
Even if it occurs, the second joint member may be externally fitted to the first joint member.
The first joint is attached to the inner surface of the second joint member when it is externally fitted.
Since the hand members abut evenly, these deviations (errors)
Repair the difference), pull the first joint members together, and
Segment bodies located in
I can .

The invention of claim 1 0, wherein, in the joint structure lining for segment according to any one of claims 7-9, for example, as shown in FIG. 4, the first coupling member 4
(4A) is the outer surface 2 of the segment body 2 (2A).
a, 2a and inner surfaces 2b, 2b so as not to be exposed.
It is characterized by the fact that This claim 10
According to the invention described above, the invention according to any one of claims 7 to 9 is provided.
The same effect as that of the first embodiment can be obtained.
Even if the second joint member is externally fitted to the joint member, these first and
2 The joint member is not exposed on the outer and inner surfaces,
Hardly affected by the environment inside and outside the body
On the other hand, the durability can be improved. For example, the first
This effect is particularly noticeable when the hand member is made of steel.
Will appear.

The invention of claim 1 1 wherein the claim 7-10
It is a joining method of the lining segment which constructs the joining structure of the lining segment according to any one of the above, for example, as shown in FIG. The first joint members 4 and 4A of the lining segments 1 and 1A are connected to each other to form the rod 40,
The lining segments 1, 1A arranged in the circumferential direction are joined together by externally fitting the second joint member 6 to the rod-shaped body 40 so as to be abutted. I have. According to the invention of claim 1 1, wherein, it is possible to obtain the same effect as described in any one of claims 7 to 10, and easily connected to the segment for the lining in the circumferential direction tunnel The inner wall side can be wrapped in a cylindrical shape, and the time required for assembling the lining segments and lining the inner surface of the tunnel in a cylindrical shape can be reduced.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a lining segment, a joining structure of a lining segment and a joining method of a lining segment according to the present invention will be described below in detail with reference to FIGS. I do. 1 to 4 are diagrams showing an embodiment of a lining segment to which the present invention is applied. First, the configuration will be described. FIG. 1 is a front view showing a tubular body constituted by a lining segment 1 as an example according to the present invention, and FIG. 2 is an arrangement example of a lining segment constituting the tubular body of FIG. FIG. 5 is a schematic sectional view taken along a circumferential direction of a lining segment for explaining a joint portion. FIG. 3 is a perspective view showing a joining structure between the lining segments, showing a perspective view between lining segment rings, and FIG. 4 is an enlarged perspective view of a joint portion.

As shown in FIG.
Is used in the shield method in this embodiment. In other words, in the space created by excavation and propulsion of the shield machine 11, the tail of the shield machine 11
It is used to support the excavated part, and a plurality of them are used in the circumferential direction of the tunnel (indicated by double arrow A: hereinafter abbreviated as A) and in the axial direction (indicated by double arrow B: hereinafter abbreviated as B). By connecting, the tubular body 100 is constructed, and the inner wall side of the tunnel is covered with a tubular shape. The lining segment 1 in this embodiment is formed by equally dividing a ring 10 of a predetermined size into the same shape, and is assembled into a cylindrical body by an automated segment assembling apparatus. It is.

A lining segment 1 according to this embodiment shown in FIGS. 1 to 4 includes a segment body 2 having an arc plate shape, and one end face (a ring face on the face side) of the segment body 2 along the circumferential direction. A pin member (first joint member) 4 provided on the joint surface 21 so as to extend in the axial direction, and the other end surface along the circumferential direction of the segment body 2 (the side opposite to the face side, that is, on the shaft side). Axial direction B on the ring joint surface) 22
And a cap member (second joint member) 6 provided so as to protrude toward the vertical shaft side (see FIG. 2 in particular). The segment body 2 is a circular arc plate having a rectangular shape in a plan view, and is made of concrete here. Notch portions 211 and 211 formed by cutting in the axial direction are provided at both end portions 21a and 21a of one end surface 21 of the end surfaces 21 and 22 along the circumferential direction of the segment main body 2. I have. The cutouts 211 and 211 are provided not only on the axial side but also on the end face side in the circumferential direction.

The above-mentioned cap member (second joint member)
6 is attached to the other end face 22 of the lining segment 1 and externally fitted to a rod-shaped body 40 formed by the pin members 4 and 4A of another lining segment provided similarly. It may be used alone without being attached to the engineering segment. In the structure in which the cap member 6 is a single body, the segment main bodies 2 and 2A in the shape of an arc plate and one end face 21 along the circumferential direction of the segment main bodies 2 and 2A are provided.
21A, a lining segment 1, 1A including pin members 4, 4A (4) provided so as to extend in the axial direction.
Are arranged in the circumferential direction, and the pin member 4 of one lining segment 1 is joined to the pin member 4A of the other segment main body 2A circumferentially adjacent to the segment main body 2 of one lining segment 1. To form a rod-shaped rod member 40, and the rod-shaped member 40 has an annular or cylindrical cap member 6 formed thereon.
And the lining segments 1, 1A are joined together, and the pin members 4, 4A are tapered surfaces 42, 42 for attracting the pin members 4, 4A to each other when the cap member 6 is externally fitted. Is formed.

The pin member 4 is similarly provided on another segment body (shown by 2A in FIG. 4) of the lining segment (shown by 1A in FIG. 4) adjacent to the segment body 2 in the circumferential direction. The rod body 40 is formed by coupling with the pin member 4 </ b> A, and is provided in the notch 211 on the end face along the circumferential direction of the segment main body 2. That is, the side portions 24, 24, which are parts of the segment body 2, are provided on both sides of the pin member 4 in the direction intersecting the circumferential direction (see FIGS. 3 and 4). Are not exposed on the outer surface 2a and the inner surface 2b of the segment body. Therefore, a gap is formed between the pin member 4 and the side portions 24, 24, and a peripheral wall of the cap member 6 described later is inserted into the gap. Therefore, when the cap member 6 is fitted onto the pin member 4, the cap member 6 is also arranged in the joined lining segment, and the outer surface 2
a and the inner surface 2b.

As described above, since the pin member 4 and the cap member 6 fitted on the pin member 4 are provided so as not to be exposed on the outer surface 2a and the inner surface 2b of the segment main body 2,
Even if the cap member 6 is externally fitted to the pin member 4, the pin member 4 and the cap member 6 are not exposed on the outer surface 2a and the inner surface 2b, and are not easily affected by the environment inside and outside the segment body 2, and are rusted and corroded. , Durability can be improved. For example, when the pin member 4 and the cap member 6 are made of steel, this effect is particularly remarkable. Further, the pin member 4 is connected to another lining segment 1.
The cross-sectional shape of the rod-shaped body 40 combined with the pin member 4A of A is formed to be a circular shape or a polygonal shape. I have. Note that the pin member 4A is also formed in the same shape.

As shown in FIG. 4, when the pin member 4 is connected to another pin member 4A, the pin member 4 has a facing surface portion 41 facing the other pin member 4 and a bar-shaped body 40. Outer peripheral portion 4 constituting outer peripheral surface (taper surface 42a described later)
The outer peripheral portion 42 includes a distal end portion 4a and a proximal end portion 4b.
A tapered surface (pulling surface) 42a that gradually widens toward is provided. Due to this tapered surface, when a cap member 6 described later is fitted to the pin member 4, the pin members are attracted to each other. That is, the pin members 4, 4
The diameter R1 of the tip end portion 4a of the rod 40 formed by the connection of
Is smaller than the diameter R2 of the cylindrical cap member 6, and the diameter R3 of the base end 4b of the rod 40 is equal to or larger than the diameter R2 of the cap member 6. Therefore, the cap member 6 is easily inserted when the cap member 6 is inserted from the distal end portion 4a of the pin member 4, and the cap member 6 is
The first joint members 4, 4 </ b> A are drawn toward the base end side of the base end portion 4 b and are firmly connected to the cap member 6. Also, the larger the difference between R1 and R2, the easier it is to fit the cap member 6 to the first joint members 4, 4A. Note that the distal end portion 4a of the pin member 4 may be provided so as to protrude to the contact surface 21b of the ring joint surface 21.

The cap member 6 is annular or cylindrical when described with reference to FIGS. 2 to 4, and is axially adjacent to the segment main body 2B of the lining segment 1B shown on the left side of FIG. It is externally fitted to a rod-like body 40 composed of pin members 4 and 4A similarly formed on two other segment bodies 2 and 2A, respectively. And this cap member 6
Is provided at a substantially central portion of the other end surface (ring joint surface on the shaft side) 22 of the segment main body 2B (2) in a state protruding in the axial direction. The cap member 6 is provided in each of the lining segments 1.

Further, the pin member 4 is formed with the tapered surface 42 for attracting the pin members 4 and 4A to each other when the cap member 6 is fitted to the outside. However, the present invention is not limited to this. A configuration in which a tapered surface is provided on the side may be employed. For example, the pin member 4 is
The rod-shaped body 40 made of 4A is a columnar body having the same diameter as the diameter of the distal end and the diameter of the proximal end. A configuration in which the size is reduced is exemplified.

According to the lining segment of the present invention constructed as described above, the cap member 6 has the pins formed in the same manner on two other segment bodies which are adjacent to the segment body in the axial direction. The member 4 is an annular or cylindrical member that fits externally to a rod-shaped body that is formed by bringing two other segments into contact with each other. When the cap member 6 is externally fitted to the pin member 4, A tapered surface 42 that draws the members 4 together is formed. Therefore, the segment main body 2A of the other lining segment 1A is arranged adjacent to the segment main body 2 in the circumferential direction, and the bar main body 40 formed by the pin members 4 and 4A of the lining segments 1 and 1A is provided. By simply fitting the cap member 6 of the lining segment 1B adjacent to the lining segment 2A in the axial direction, the segment main body 2 is connected to the segment main body 2A of the circumferential lining segment 1A and the other lining main body in the axial direction. It can be easily and reliably joined to the segment main body 2B of the segment 1B. Further, even when an assembling position of the lining segments 1 and 1A in the circumferential direction in which the pin members 4 and 4A are respectively provided has an assembly error such as a slight shift, the cap member 6 can be connected to the pin members 4 and 4A. When the pin members 4A are fitted to each other, the pin members 4 and 4A are drawn together and joined, and the error is corrected, and the lining segments 1, 1 provided with the pin members 4, 4A and the cap member 6 are provided.
A and 1B can be joined accurately.

Further, since all the lining segments 1 are equally divided and have the same shape, the inner wall side of the tunnel can be wrapped in a cylindrical shape, and the mold cost for molding the lining segments is economical. It has become something. Further, between the lining segments 1 and 1A in the circumferential direction and the lining segment 1 in the axial direction.
Since the members B can be joined to each other by the pin members 4 and 4A and the cap member 6, it is not necessary to join them separately using joints, which is more economical. Furthermore, a joining member such as a bolt or a metal member for joining the circumferential lining segments to each other and a joining member such as a bolt or a metal member for joining the lining segments adjacent in the axial direction to each other. It is not necessary to prepare separately, it is not only economical, but also it is not necessary to perform an operation of joining each of them separately, and it is possible to further shorten the construction period.

The pin members 4, 4 provided on the lining segments 1, 1A arranged adjacently in the circumferential direction, respectively.
4A are formed on the rod-shaped body 40 joined to each other, and are formed on the segment main body 2B of the other lining segment 1B adjacent in the axial direction B of the lining segments 1 and 1A arranged adjacently in the circumferential direction. Since the cap member 6 is fitted to the outside, the lining segments 1, 1A, and 1B arranged adjacent to each other in the circumferential direction A and the axial direction B by the pin members 4, 4A and the cap member 6 at one time. In addition to joining, the joining operation is further facilitated, and the construction period can be shortened. The cap member 6
Is not attached to the lining segment 1 and is a single unit, the cap member 6 is simply fitted to the pin members 4 and 4A of the lining segments 1 and 1A arranged adjacently in the circumferential direction. Thus, it is possible to easily and firmly join the two lining segments 1 and 1A in a pulled state. The detailed operation and effect are almost the same as the operation and effect of the cap member 6 on the wall panel.

Next, a method of joining these lining segments will be described with reference to FIGS. The lining segment 1 is assembled by a shield machine 11 (see FIG. 1) in the direction of the white arrow from the shaft to the face. First, the segment ring 10 is formed by arranging a plurality of lining segments adjacent to each other in the circumferential direction A in a cylindrical shape. That is, the segment joint surfaces 26, 26 (see FIG. 2), which are end faces along the axial direction of the lining segment 1, are butted in the circumferential direction of the lining segment 1, and each of the lining segments 1. The segment ring 10 is formed by arranging the pin members 4 and 4 provided at the ends thereof so that the pin members 4 and 4 are combined to form the rod-shaped body 40. This effect is the same when the cap member 6 is a single unit.

Then, the lining segments 1 which are connected to the face of the segment ring 10 and constitute the next segment ring 10A are formed by arranging them in the circumferential direction as described above. At this time, the cap member 6 of the lining segment 1 that constitutes the next segment ring 10 that is axially adjacent to the cutting surface side of the previous segment ring 10 is attached to the rod 40 formed on the previous segment ring 10 side. Fit outside. Then, the lining segments 1, 1 which are arranged adjacent to each other in the circumferential direction and constitute the preceding segment ring 10 are joined together, and the joined lining segments 1, 1 are joined to the later segment ring. The lining segment 1 constituting 10A is joined. In this manner, the lining segments 1 can be easily connected in the circumferential direction and the axial direction to cover the inner wall side of the tunnel in a tubular shape, and the lining segments are assembled to cover the inner surface of the tunnel in a tubular shape. It is possible to reduce the working time for the work. When the cap member 6 is used alone, the circumferential lining segments 1 and 1 can be easily connected to each other, and the time required for assembling the circumferential lining segments can be reduced. You can do it.

By connecting the lining segments 1 in the circumferential direction and the axial direction in this way, the lining segments 1 are assembled into a cylindrical shape to form a cylindrical body 100.
Note that the cross-sectional shape of the rod-shaped body 40 composed of the pin members 4 and 4 (4A) described above is formed corresponding to the shape of the opening of the cap member 6 fitted to the rod-shaped body 40. The cross-sectional shape of the rod-shaped body 40 may be any cross-sectional shape, but is preferably a circular shape including a circle, an ellipse, an ellipse, or a hexagonal shape having a hexagonal shape or more.

Another example of the cross-sectional shape of such a rod is shown in FIG.
Shown in FIG. 5A shows a cross-sectional shape of each of the rod-shaped body 40 and the cap member 6 according to the above-described embodiment.
0 shows a cross section of an octagonal shape whose cross section is a polygon, and a cross section of a cap member corresponding to the octagonal shape. FIG. ,
The cross section of the corresponding cap member 601 is shown,
(C) shows the rod-shaped body 4 when the cross-sectional shape of the rod-shaped body is circular.
02 shows a cross section of the cap member 602 corresponding thereto.

With the shape as shown in FIG. 5, an assembly error of the lining segment 1 occurs, the position of the lining segment is shifted, and the end faces along the axial direction (segment joint surfaces 26, 26: Even if they are not in contact with each other, the cap members 6 are externally fitted to the pin members 4 and 4 so that the pin members 4 and 4 are attracted to each other and joined together. The lining segments 1, 1 arranged in the circumferential direction, each of which has a corresponding one of the lining segments 4, can be drawn together. Also, the same effect can be obtained when the cap member 6 is not attached to the lining segment but is a single unit.

Further, when the cross section of the rod is circular or hexagonal or more polygonal, the cap is attached to the rod.
Are easily fitted to the outside, and even if the positions of the pin members 4 are slightly shifted, they can be easily fitted to the outside,
They can be drawn to each other. That is, the segment main bodies to be joined are shifted in the radial direction as well as in the circumferential direction, in other words, the assembly error of the lining segments arranged adjacent to each other in the circumferential direction is caused, and the shift (error) is caused. No matter in which direction, the cap member 6 is easily fitted to the pin member 4 and the pin member 4 uniformly contacts the inner surface of the cap member 6 when the cap member 6 is fitted to the outside. ) Can be repaired and the pin members 4 can be pulled together to securely join the segment bodies arranged in the circumferential direction. Further, by this pulling, it is possible to join the lining segments arranged adjacent in the axial direction to the segment main bodies adjacent in the circumferential direction.

It should be noted that the pin member 4 is formed into a rod by combining it with another pin member provided in the same manner. It may be configured. For example, when the cap member 6 is externally fitted to the pin member 4, an engaged portion that engages with the engaging portion of the cap member may be formed.
This example is shown in FIG. 6 as a modification of the pin member and the cap member (joint member). FIGS. 6A and 6B show modified examples of the pin member and the cap member. FIG. 6A is a perspective view of a rod formed by the modified example of the pin member, and FIG. 6B shows the rod member of FIG. It is a cross-sectional view of a cap member showing a state. The pin members 46, 46 are combined with each other to form a rod-shaped body 404, similarly to the above-described pin members 4, 4, and each of the pin members 46, 46 gradually faces from the facing surface portion 461 to the base portion 46b from the distal end portion 46a. And an outer peripheral portion 462 having an outer peripheral surface 462 that is tapered.

Although not shown, these pin members 46, 46 are provided on lining segments arranged adjacent to each other in the circumferential direction. Also, the pin members 46, 4
A semi-annular (arc-shaped) ridge 463 protruding outward is formed substantially at the center of the outer peripheral surface 462a having a taper of 6, and the pin members 46, 46 are joined to form a rod-like body. The projecting ridge 463 is formed so that both end portions thereof are close to each other and have a substantially annular shape.

As shown in FIG. 6B, when the cylindrical cap member 661 is externally fitted to the rod-shaped body, the annular ridge 463 is at the tip end side of the inner peripheral wall 661a of the cylindrical cap member 661. And engages with a groove (engaging portion) 662 provided in an annular shape. Therefore, the state in which the cap member 661 is fitted to the rod-shaped body 404 composed of the pin members 46, 46 can be maintained, and the pin member 46 can be prevented from coming off from the cap member 661. Can be made stronger.
Therefore, as shown in FIG. 6B, the joining between the lining segment 1 provided with the pin member 46 and the lining segment 1B (1) provided with the cap member 661, that is, the lining segment adjacent in the axial direction is formed. The joining between the segments 1 and 1B can be made stronger and more reliable. The cap member 661 may also be used alone without being attached to the lining segment 1, and may be configured to join the pin members 46 provided on the lining segments adjacent in the circumferential direction.

A projection 463 is provided on each of the pin members 46, 46, and a groove 662 engaged with the projection 463 is formed in the cap member 661.
However, the present invention is not limited to this, and a ridge is provided on the inner surface of the cap portion that is externally fitted to the rod-like body formed by coupling these pin members, and the groove that engages with the ridge is provided on the pin member side. Needless to say, the configuration may be provided. Further, the cross-sectional shape of the rod-shaped body made of the pin member at this time and the cross-sectional shape of the corresponding cap member may be any shape.

Further, in the cap member (second joint member), as shown in a cap member 666 shown in FIG.
It may be formed to extend in the axial direction B from a. Note that any number of the notches 667 may be formed. Since the notch portions 667 are formed in the cap member 666 in this manner, when the cap member 666 is externally fitted to the pin member, the cap member 666 is formed.
Since the tip of is slightly expanded by the pin member,
The cap member 666 can be easily extrapolated to the pin member, so that the cap member 666 can be easily fitted to the pin member 4. The cap member 666 may be used alone, and the lining segments provided with the pin members 4 configured as described above may be joined together.

Incidentally, in the above lining segment, a pin member is provided on one end surface (ring joint surface) along the circumferential direction of the segment body, and a cap member is provided on the other end surface (ring joint surface). However, the present invention is not limited to this, and a configuration in which a pin member and a cap member are respectively provided on both end surfaces along the circumferential direction of the lining segment may be adopted. This example is shown in Modification Example 1 below.

<Modification 1> FIG. 8 is a diagram showing an arrangement of a lining segment as a modification 1 in which a pin member and a cap member are provided on both end surfaces (ring joint surfaces) along the circumferential direction, respectively. . The lining segments arranged in this figure are all of the same shape, and the lining segments 3
0 will be mainly described, and description of other lining segments will be omitted. By joining adjacent ones of the lining segments arranged as shown in the drawing, the inner surface of the tunnel formed by excavating the ground can be wrapped in a cylindrical shape. Also, the lining segment in this figure is shown in a state where the lining segment for explaining the joint portion is cut along the circumferential direction.

The lining segment 30 shown in FIG. 8 has a shaft-side cap member 60 provided substantially at the center of the shaft joint side ring joint surface 31, and has two circumferential end portions 31 a,
31b is provided with shaft-side pin members 4B and 4C protruding toward the shaft and in the axial direction. This shaft-side pin member 4
C is connected to the shaft-side pin member 4B similarly provided on the lining segment 30A (30) arranged adjacently in the circumferential direction, similarly to the above-described pin members 4 and 4A, and
The cap member 61 of the lining segment 30B (30) adjacent to the shaft side is fitted to the rod-like body 40A.
Note that these components have the same configuration as the above-described pin members 4 and 4A and the cap member 6, and a description thereof will be omitted.

Face-side pin members 4D and 4E are provided at both ends 32a and 32b in the circumferential direction of the face-side ring joint surface 32 of the lining segment 30, and a face-side cap member 61 is provided substantially at the center. Is provided. The face-side pin members 4D and 4E are provided on the segment body similarly to the above-described lining segment 1, and are cutouts that are recessed toward the shaft from the contact surface 32c that contacts the lining segment 30C that is adjacent in the axial direction. 32d, 32d, and the tip portion is protruding toward the face side and in the axial direction.
The end face 61a of the face side cap member 61 has a contact surface 32c.
And the main body portion is buried.

A plurality of these lining segments 30 are arranged in the circumferential direction and the axial direction, and the corresponding pin members 4B, 4C,
By externally fitting the cap member 61 to 4D and 4E, the respective end faces come into contact with each other and are joined.

Next, an assembling method will be described. The lining segments 30 are adjacent to each other in the circumferential direction, and end faces along the opposing axial direction (segment joint faces;
(Indicated by 2) are brought into contact with each other, and pin members (4B and 4C, 4D and 4E) provided at the respective ends in the circumferential direction are connected to each other to assemble to form the rods 40A and 40B, respectively.

Thus, the segment ring 10F is formed by assembling into a cylindrical shape, and the lining segment 30C constituting the next segment ring 10G formed adjacent to the face side of the segment ring 10F is formed on the rod 40B. Shaft cap member 60A (60). At this time,
The lining segments 30C and 30D constituting the next segment ring 10G are arranged adjacent to each other in the circumferential direction, and the pin members 4B and 4C on the shaft side of the lining segments 30C and 30D adjacent in the circumferential direction are connected. To form a rod 40A.

The rod-like body 40A is inserted into the cap member 61 on the face side of the lining segment 30A adjacent to the lining segment 30 constituting the segment ring 10F. In this manner, the bar-shaped body 40A and the face-side cap member 61 provided at the corresponding positions, and the shaft-side cap member 60 (including 60A) are provided on the bar-shaped body 40B.
Can be externally fitted, so that the lining segments 30 and 30A that are arranged in the circumferential direction and that constitute the segment ring 10F are joined together, and the cap member 61 of the lining segment (30A in the figure). As a result, the lining segments (30C and 30 in the figure) arranged adjacent to each other in the circumferential direction and constituting the next segment ring 10G are joined together. Lining segment 3 with the above configuration
0 has the same effect as that of the above-described lining segment 1.
The same applies to the connection structure of 0.

The planar shape of the segment body of the lining segments 30 is not limited to a rectangular shape, but may be any as long as it can cover the inside of the tunnel in a cylindrical shape by connecting in the circumferential and axial directions. Any shape may be used. For example, in a segment in which lining segments are connected to each other in the circumferential direction to form a segment ring, a step is provided in the circumferential direction at a joint between the segments of the lining segment, and the joint protrudes in a direction intersecting the circumferential direction. There is a shape in which a portion is formed, and this segment (hereinafter, referred to as a wing segment) may be applied.

Next, a case where the present invention is applied to the wing segment will be described as a second modification with reference to FIG.

<Modification 2> FIG. 9 shows a joint structure of Modification 2 of the embodiment of the lining segment according to the present invention.
It is a schematic layout of a wing segment. In addition, the lining segment in this figure is shown in a state where the lining segment for explaining the joint portion is cut along the circumferential direction. The wing segment 50A shown in FIG.
50B and 50C are segment bodies 51, 51A and 51B formed of arc plates,
On both sides along the axial direction of 51A, 51B, the segment bodies 51, 51A, 5
1B are provided with protrusions 54 and 55, respectively, which protrude from both sides and have the same thickness as the arc plate.
A step is formed in the segment joint portion (hereinafter, referred to as a segment joint portion) by the protruding portions 54 and 55, and an arc-shaped segment having two surfaces having different degrees of protrusion formed by the step is formed.

Also, as shown in this figure, there are three types of wing segments 50. In the figure, wing segments whose left and right ends are symmetrical as shown by reference numeral 50A are symmetrical wing segments, and left and right as shown by 50B and 50C, respectively. A wing segment having an asymmetrical shape on both sides and having a substantially parallelogram shape is referred to as an asymmetrical wing segment. For distinction, 50B is referred to as a left segment and 50C is referred to as a right segment. As shown in FIG. 9, a segment ring is formed by combining these wing segments in the circumferential direction.

These wing segments 50A, 50
B and 50C show a state in which the left wing segment 50B and the right wing segment 50C are adjacently joined one by one to the left and right sides of the wing segment 50A, respectively, as shown in FIG. The joint 57 on one side (left side) of the symmetrical wing segment 50A and the joint 58 on one side (right side) of the left wing segment 50B have shapes corresponding to each other.

The other (right side) joint portion 56 of the symmetrical wing segment 50A and the right wing segment 5
The one (left side) joint portion 59 of OC is configured to have a corresponding shape so as to match. Also, the joint portion 59A on the other side (right side) of the right wing segment 50C.
Is another symmetrical wing segment 5 not shown
0A or the left-hand joint of the right wing segment and is joined. The other (left-hand) joint 58A of the left wing segment 50B is connected to another symmetrical wing segment 50A (not shown) or another wing segment 50A. The left wing segment is configured to be joined to and joined to the right joint part of the left wing segment.

The wing segments 50A, 50B, 50C having such a planar shape are respectively end faces (face-side ring joint faces) 501, 501 along the face-side circumferential direction.
A, 501B have two cap members 61R, 61L, 6
11R, 611L, 612L, and 611R are provided, and an end surface (a shaft joint side ring joint surface) 50 along a shaft-side circumferential direction.
Two pin members 4B and 4C are provided on 2, 502A and 502B. In the symmetric wing segment 50A, cap members 61L and 61R are provided on the end face on the face side.
Is provided so that the tip is located at substantially the same position as the contact surface 501. Here, the contact surface 501 is the next face of the end face on the face side of the symmetrical wing segment 50A which constitutes the next segment ring 10I arranged adjacent to the face side of the symmetrical wing segment 50A in the face side. Of the symmetrical wing segment (having the same configuration as the 50AA: 50A) of the vertical shaft.

The symmetric wing segment 5
On the shaft end side 502 of the shaft 0A, the two pin members 4B, 4B are substantially coaxial with the two cap members 61L, 61R.
4C is provided. Left wing segment 50B
And the right wing segment 50C, the cap members 611L,
611R, 612L, and 612R are provided at predetermined positions such that the distal ends thereof are located at substantially the same positions as the contact surfaces 502A and 501B. That is, the end face 501 on the face side
A, 501B. here,
The contact surfaces 502A and 502B are adjacent to the left wing segment 50B and the right wing segment 50C in the axial direction on the face side of the left wing segment 50B and the right wing segment 50C. The next left wing segment 50BA (50
B) and a surface that comes into contact with the ring joint surfaces 502A, 502A on the shaft side of the right wing segment 50CA (configured similarly to 50C).
Here, it is flush with the end face on the face side.

The left wing segment 50
End surface 50 on the shaft side of B or right wing segment 50C
Pin members 4B and 4C are provided at both ends of 2A and 502B, respectively, and a pin 7 which is fitted to the cap member 61 is provided at the center. As shown in FIG. 10, the pin 7 is a cylindrical member formed by integrally forming a rod-like body formed by connecting the above-described pin members 4B and 4C. From base end 7
The taper is gradually expanded toward b. A notch 72 is formed in the axial direction from the front end 7a, and when inserted into the cap member 61, it is slightly pushed inward so that it can be joined more firmly. The pin 7 is provided on the other end face along the circumferential direction, in other words, on the ring joint surfaces 502A and 502B on the shaft side in each of the left wing segment 50B and the right wing segment 50C. The position of each of the wing segments 50B and 50C is determined by one of the cap members 611R and 611R provided on the end face on the side of the face with the lower protruding degree.
Each is provided coaxially with 12L.

The wing segments 50A, 50B,
The joining structure of 50C will be described with reference to FIG. 9. The cap member 61L, which is the end face 501 of the symmetrical wing segment 50A constituting the segment ring 10H on the face side, is described.
61R, a symmetric wing segment 50AA constituting the next segment ring 10I, a left wing segment 50BA disposed adjacent to the left side in the circumferential direction of the symmetric wing segment 50AA, and a right side in the circumferential direction of the symmetric wing segment 50A. Opposing end faces 50 of right wing segment 50CA arranged
2, 502A, 502B are brought into contact with each other, and pin members 4C,
The rod-shaped bodies made of 4B are respectively fitted to the outside.

That is, the symmetric wing segment 50A
A left pin member 4C and left wing segment 5
0B is connected to the right pin member 4B to form a rod, and this rod is connected to the symmetrical wing segment 50A.
To the outer left cap member 61L. Also, the right pin member 4B of the symmetric wing segment 50AA
And the left pin member 4 of the right wing segment 50C.
C to form a rod-shaped body, and this rod-shaped body is connected to the cap member 6 on the right side of the symmetrical wing segment 50A.
It is in a state of being externally fitted to 1R.

Thus, the previous segment ring 1
Each wing segment 50AA, 50BA, 50CA constituting the next segment ring 10I is joined to the symmetric wing segment 50A constituting 0H, and the symmetric wing segment 50A and the left wing segment 50B are attracted and joined. And the symmetrical wing segment 50A and the right wing segment 50C can be pulled together and joined. The left wing segment 50B and the right wing segment 50C are respectively provided with pins 7,
7 is inserted into the corresponding cap members 611R and 612L, that is, the cap members 611R and 612L of the similarly formed left wing segment 50B and right wing segment 50C adjacent to the shaft side of the wing segments 50B and 50C, respectively. By doing
The left wing segment 50BB and the right wing segment 50CB adjacent to the respective shaft sides are in a state of being joined.

As described above, the cap members 61L, 61R provided on the face side end surfaces 501, 501A, 501B of the segment ring 10H are attached to the segment ring 10H.
Next segment ring 1 connected adjacent to the face side of
By inserting the pin members 4B, 4C and the pins 7 of the 0I, the segment rings 10H, 10I and the segments arranged in the circumferential direction can be joined at a time. In this figure, among the three types of wing segments, wing segments having the same shape are arranged adjacent to each other in the axial direction and joined, but the present invention is not limited to this. They may be joined together.

The pin member and the cap member included in each of the lining segments are configured to connect the segment main bodies in the circumferential direction and also in the axial direction, so that unlike the conventional segments, the segments are joined to each other. It is not necessary to separately mold the parts to be attached so that the joint members such as bolts and nuts and the joint members such as bolts and nuts that join the rings to each other can be attached to the segment body. Can be. That is, in the case where the segment main body is formed of concrete as in the present embodiment, it is possible to reduce troubles in arranging the reinforcing bars. The lining segment is made of concrete, but is not limited to this. The lining segment may be made of steel, and its planar shape may be any shape. It may be configured. In addition, it is needless to say that specific detailed structures and the like can be appropriately changed. In addition, in the above-described lining segment, in addition to the cap member and the pin member, a tenon is provided on a joint surface for securing stability during assembly and transmitting shear force between the connected segments. Is also good. In addition, the cap members 61, 61 in the first and second modifications.
R, 61L, 611R, 611L, 612L, 611R
May not be provided on the lining segments, and may be used alone. That is, the cap members 61, 61R, 61L, 611R, 611L, 612 used alone.
L, 611R may join the lining segments arranged adjacent to each other in the circumferential direction. Although the invention has been specifically described based on the embodiments, the invention is not limited to the above-described embodiments, and can be variously changed without departing from the gist of the invention.

[0079]

As described above, according to the first aspect of the present invention, it is possible to easily and accurately connect in the circumferential direction and the axial direction of the tunnel, and to cover the inner wall side of the tunnel in a cylindrical shape. it can. Further, since the joining operation between the segments is facilitated, automatic assembly by a machine can be performed. In addition, the entire lining segment can be equally divided into the same shape, and the inner wall side of the tunnel can be wrapped in a cylindrical shape, and the mold cost for molding the lining segment can be made economical. Since the segments between the lining segments in the circumferential direction and the segments in the axial direction can be joined by the first and second joint members, there is no need to join them separately using joints. It becomes economical and can shorten the construction period. Also, the first
When the second joint member is externally fitted to the joint member, the first joint
The engaging portion of the second joint member is engaged with the engaged portion of the hand member.
Therefore, a state in which the second joint member is externally fitted to the first joint member
State from the second joint member to the first joint member.
Can be prevented from coming off, and the joint of both joint members can be
A stronger connection can be achieved,
Adjacent lining segments can be securely joined
You.

According to the second aspect of the present invention, the tunnel
It can be easily and accurately connected in the circumferential and axial directions,
The inner wall side of the tunnel can be covered in a tubular shape. Further
In addition, since the joining work of the
Automatic assembly can also be performed. In addition, Seg for all lining
With the same shape in equal divisions,
Can form a lining segment
Formwork costs can be economical,
Between circumferential lining segments and axial segments
Can be joined by the first and second joint members.
It is necessary to use joints for each
It is economical and shortens the construction period.
Reduction can be achieved. Further, in the second joint member,
Is the notch at least the leading edge of the second joint member?
Since it is formed to extend in the axial direction from the
When the second joint member is externally fitted to the first joint member,
2 The tip of the joint member is slightly pushed by the first joint member.
So that the second joint member can be used as the first joint member.
The second joint member can be easily extrapolated, so that the second joint member is connected to the first joint member.
It can be easily fitted on the member.

According to the third aspect of the present invention, the segment
The first joint member of the segment body is circumferentially connected to the segment body.
In the other segment body adjacent in the same direction
Of the rod-shaped body formed by joining with the first joint member
So that the shape is circular or hexagonal or more polygonal
Since the first joint members are formed,
The second joint member easily fits outside the rod-shaped body.
At the same time, the position of the first joint members is slightly shifted
Is easily fitted to the outside, and the first joint members are pulled together.
The segment body arranged in the circumferential direction
It is possible to surely join. Also, this pull
The segment body adjacent in the circumferential direction
Joining adjacently placed lining segments
it can.

According to the fourth aspect of the present invention, since the first joint member is provided so as not to be exposed on the outer surface and the inner surface of the segment body, the second joint member is provided on the first joint member. Even when fitted, the first and second joint members are not exposed on the outer surface and inner surface, are less affected by the environment inside and outside the segment main body, and can improve durability against rust and corrosion. For example, when the first joint member is made of steel, this effect is particularly remarkable.

According to the fifth aspect of the present invention, it is adjacent in the circumferential direction.
Provided in each of the lining segments arranged in contact with each other
Into a rod-shaped body in which the first joint members are joined together,
Of these lining segments arranged adjacent to each other in the circumferential direction,
Segment book of another lining segment that is adjacent in the axial direction
Since the second joint member formed on the body is fitted outside,
In the first joint member and the second joint member, the circumferential direction and the axial direction
Lining segments arranged adjacent to each other at once
Can join circumferential lining segments
Adjacent to the connecting members such as bolts and metal fittings
Bolts to join the lining segments
It is not necessary to prepare separate joining members such as hardware.
Is not only economical, but also joins each
Work is not required, and the construction period is further shortened.
Can be. Further, the first joint members are joined together.
Simply fitting the second joint member to the rod-like body in the circumferential direction
And the lining segments placed adjacent to each other in the axial direction
Because it can be joined to, joining work becomes easy,
The construction period can be shortened.

According to the sixth aspect of the present invention, the lining
The segments in the circumferential direction, the first of these lining segments
Abut the joint members so that they join together to form a rod.
And then placed on the rod, in the circumferential direction
Other linings axially adjacent to the lining segment
By externally fitting the second joint member of the segment,
Joining the lining segments arranged in opposite directions
And these lining segments joined in the circumferential direction
Joining the other lining segment in the axial direction of
So that the lining segments can be circumferentially and axially
To easily connect to the inner wall of the tunnel
Can be assembled and lining segments assembled into the inside of the tunnel
Can shorten the work time for lining the cylinder
You.

According to the seventh aspect of the present invention, the first joint portion
The second joint member is attached to a rod-like body in which the members are joined.
Lining segs that are placed adjacently in the circumferential direction just by fitting
Are joined and these circumferentially adjacent lining segments
Work is easier and the construction period is shortened.
Can be Further, a second joint portion is provided on the first joint member.
The state where the material is fitted outside is maintained, and
The first joint member can be prevented from coming off,
The joining of the hand members can be made stronger. Yo
Thus, the lining segment provided with the first joint member
More secure and secure joints
You.

According to the eighth aspect of the present invention, the lining segment is disposed adjacently in the circumferential direction only by externally fitting the second joint member to the rod-like body to which the first joint members are joined. Are joined, the joining operation of these circumferentially adjacent lining segments is facilitated, and the construction period can be shortened. Further, the second joint member is attached to the rod-shaped body.
Is easily fitted to the outside, and the position of the first joint members is
The first joint can be easily fitted to the outside even if the
The members can be brought closer to each other. According to the ninth aspect, the same effect as that of the seventh or eighth aspect can be obtained, and the second aspect can be obtained .
When the joint member is externally fitted to the first joint member, the second joint
The distal end of the member is slightly pushed open by the first joint member.
So that the second joint member can be easily connected to the first joint member.
Can be extrapolated, so that the second joint member is
It can be easily fitted outside.

According to the tenth aspect , the seventh aspect is provided.
According to the present invention, the same effects as those of the invention described in any one of 1 to 9 can be obtained, and even when the second joint member is fitted to the first joint member, the first and second joint members are exposed to the outer surface and the inner surface. Without being affected by the environment inside and outside the segment body, and the durability against rust and corrosion can be improved. For example, when the first joint member is made of steel, this effect is particularly remarkable.

According to the eleventh aspect of the present invention, the same effect as in any of the seventh to tenth aspects can be obtained, and the lining segment is formed in a circumferential direction.
To easily connect the inside of the tunnel to the inside of the tunnel.
And assembling the lining segment into the inside of the tunnel
Work time for lining the surface into a cylinder can be reduced.
You.

[Brief description of the drawings]

FIG. 1 is a front view of a tubular body showing a tubular body constituted by a lining segment as an example according to the present invention.

FIG. 2 is a schematic cross-sectional view showing an arrangement example of a lining segment constituting the tubular body of FIG. 1 and illustrating a joint portion along a circumferential direction of the lining segment.

FIG. 3 is a perspective view showing a joining structure between the lining segments, showing a segment between lining segment rings.

FIG. 4 is an enlarged perspective view of a joint portion.

5A and 5B are diagrams showing a cross-sectional shape of a rod-shaped body and a cap member corresponding to the rod-shaped body, respectively. FIG. (B) is a cross-sectional view of a rod-shaped body having an elliptical cross-section, and a corresponding cross-sectional view of a cap member 601. (c) is a cross-sectional view of a rod-shaped body having a circular cross-section. Sectional drawing of the cap member 602 which performs.

FIG. 6 shows a modification of the pin member and the cap member,
(A) is a perspective view of a rod-shaped body formed by a modified example of the pin member,
(B) is a cross-sectional view of the cap member showing a state in which the cap member is externally fitted to the rod-shaped body of (a).

FIG. 7 is a perspective view of a cap member showing a modification of the cap member 666.

FIG. 8 is a view showing an arrangement of a lining segment as a first modification in which a pin member and a cap member are provided on both end surfaces (ring joint surfaces) along the circumferential direction, respectively.

FIG. 9 is a schematic layout diagram of wing segments, showing a joint structure of a modified example 2 of the embodiment of the lining segment according to the present invention.

FIG. 10 is a perspective view of a pin 7;

FIG. 11 is a perspective view of a joint portion between segments showing a conventional example of a joint structure between segments and between rings in a shield method.

FIG. 12 is a perspective view of a joint portion between segments showing a conventional example of a joint structure between segments and between rings in a shield method.

[Description of Signs] 1, 1A, 1B, 30, 30A, 30B, 30C Segment for lining 2a Outer surface of segment body 2b Inner surface of segment body 2, 2A, 2B Segment body 4, 4A, 4B, 4C, 4D, 46 Pin member (first joint member) 6,60,60A, 61,61L, 61R, 601,6
02, 661, 666 Cap member (second joint member) 11 Shield machine 21 Ring joint surface (one end surface along the circumferential direction) 22 Ring joint surface (the other end surface along the circumferential direction) 31 Ring joint surface (end surface) 32 Ring joint surface (end surface) 40, 40A, 40B, 401, 402, 404 Rod 42 Tapered surface (pulling surface) 46a Tip end 46b Base end 50A, 50AA Symmetrical wing segment (lining segment) 50B, 50BA For left Wing segment (lining segment) 50C, 50CA Right wing segment (lining segment) 50 Wing segment (lining segment) 51 Segment body 52, 53 Side portion 462 Outer peripheral portion (attracting surface) 463 Engaging part) 501, 501A, 502, 502A Ring joint surface (end) Surface) 662 Groove (engaging portion) 666a Tip edge 667 of cap member Notch

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiromi Tsuboi 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu Construction Co., Ltd. (72) Inventor Noriaki Machida 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu (56) References JP-A-9-41884 (JP, A) JP-A-6-346696 (JP, A) JP-A-10-299393 (JP, A) Jpn. , U) Hikaru 2-15700 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E21D 11/04 E21D 11/08

Claims (11)

(57) [Claims] 1. A lining segment for connecting a plurality of members in a circumferential direction and an axial direction of the tunnel to lining the inner wall side of the tunnel in a cylindrical shape, wherein the segment main body has an arc plate shape. A first joint member provided on one end surface along the circumferential direction of the segment body so as to extend in the axial direction; and a first joint member provided on the other end surface along the circumferential direction of the segment body so as to extend in the axial direction. A second joint member, wherein the first joint member is similarly provided on another segment body circumferentially adjacent to the segment body.
A rod-shaped body is formed by coupling with the joint member. The second joint member includes a first joint member similarly formed on two other segment bodies adjacent to the segment body in the axial direction. An annular or cylindrical shape that is fitted to a rod-shaped body that has become a rod by bringing the two other segments into contact with each other, and at least one of the first joint member and the second joint member includes: When the second joint member is fitted to the outside, a drawing surface for drawing the first joint members together is formed, and the first joint member has the second joint attached to the first joint member.
When the member is fitted outside, it engages with the engaging portion of the second joint member
A lining segment, wherein an engaged portion is formed . 2. A plurality of pieces are arranged in the circumferential and axial directions of the tunnel.
For connecting the inner wall side of the tunnel to a tubular shape by connecting
A lining segment, Segment body in the shape of an arc plate and this segment body
On one end face along the circumferential direction of
A first joint member provided on the periphery of the segment body;
On the other end face along the direction
And a second joint member that is The first joint member is adjacent to the segment body in a circumferential direction.
A first segment similarly provided on the other segment body in contact
A rod-shaped body is formed by joining with a joint member.
And The second joint member is adjacent to the segment body in the axial direction.
In the same way for the two other segment bodies
The formed first joint member is connected to the two other segments.
A ring that fits externally on a rod that has become rod-shaped by abutting a cow
Shape or cylindrical shape, The second joint member has at least one notch.
Extending axially from the leading edge of the second joint member.
Formed At least one of the first joint member and the second joint member
On the one hand, when the second joint member fits outside, the first joint member
Attraction surfaces are formed to attract each other
A lining segment, characterized in that: 3. The lining segment according to claim 1, wherein the first joint member of the segment main body includes the segment.
Repeat for the other segment body circumferentially adjacent to the body.
Rod connected to a first joint member provided
So that the cross-sectional shape of the shape is circular or polygonal
A lining segment, which is formed . 4. A lining for segment according to claim 1, said first coupling member is provided so as not to be exposed to the outer and inner surfaces of said segments body Characteristic lining segment. 5. A cover according to any one of claims 1 to 4.
Multiple construction segments in the circumferential and axial directions of the tunnel
For connecting the inner wall side of the tunnel to a tubular shape by connecting
A joining structure of lining segments, wherein the lining segments arranged adjacent to each other in a circumferential direction are provided.
Linings are abutted and each of these lining segments
The first end face along the circumferential direction of the
1 A rod-like body formed by joining together joint members is provided with a lining segment arranged adjacently in the circumferential direction.
Segment book of another lining segment that is adjacent in the axial direction
Patent that the second coupling member formed in the body has been fitted
The joining structure of the lining segments to be characterized. 6. A cover according to any one of claims 1 to 4.
Multiple construction segments in the circumferential and axial directions of the tunnel
For lining that connects the inner wall side of the tunnel into a tubular shape by connecting
A method for joining segments, comprising: lining the lining segments in a circumferential direction.
So that the first joint members of the
, And placed in contact with each other, and then, on the rod-shaped body,
Of other lining segments axially adjacent to the segment
By externally fitting the second joint member, it is arranged in the circumferential direction.
The lining segments are joined together,
Axially forward of these circumferentially joined lining segments
Characterized by joining other lining segments
How to join engineering segments. 7. A plurality of lining segments for a tunnel.
The lining segment which is arranged adjacently in the circumferential direction and is adjacent to the lining segment
The tunnel inner wall side becomes cylindrical by connecting
A joining structure of lining segments to be lining, wherein each of the lining segments has an arc plate shape.
And the segment body along the circumferential direction of the segment body.
A first joint provided on the end face of the joint so as to extend in the axial direction.
And a first joint member of one lining segment,
Adjacent to the segment body of the lining segment in the circumferential direction
A first segment similarly provided on the other segment body
A rod-shaped rod is formed by coupling with the joint member, and an annular or cylindrical second joint member is externally fitted to the rod.
The lining segments are joined together, and at least one of the first joint member and the second joint member is joined.
When the second joint member is externally fitted, the first joint member
Attraction surfaces are formed to attract the cattle to each other,
The first joint member has the second joint member attached to the first joint member.
Is engaged with the engagement portion of the second joint member when
A lining segment having a joint portion formed thereon
G joint structure. 8. A lining for lining a tunnel inner wall side by arranging a plurality of lining segments adjacent to each other in a circumferential direction of a tunnel and connecting the adjacent lining segments to each other. And a lining segment, wherein each of the lining segments has a segment body in the shape of an arc plate, and one end face along the circumferential direction of the segment body is provided so as to extend in the axial direction. A first joint member of one lining segment, the first joint member of the one lining segment being provided on the other segment body circumferentially adjacent to the segment main body of the one lining segment.
A rod-shaped rod-shaped body is formed by coupling with the joint member, and an annular or cylindrical second joint member is externally fitted to the rod-shaped body, and the lining segments are joined to each other. At least one of the two joint members is formed with a drawing surface for drawing the first joint members together when the second joint member is fitted to the outside, and the second joint member has at least one notch. But
The second joint member extends axially from the leading edge.
A joining structure of a lining segment, wherein the joining structure is formed by forming the lining segment. 9. The lining segment joining structure according to claim 7 , wherein a cross-sectional shape of the rod-shaped body is formed to be a circular shape or a polygonal shape. Segment joining structure. 10. The method according to any one of claims 7 to 9, wherein
In the joining structure of a lining segment, the first joint member is formed on an outer surface and an inner surface of the segment main body.
A joining structure for a lining segment, which is provided so as not to be exposed on a surface . 11. The method according to any one of claims 7 to 10.
Segme to construct the joint structure of lining segments
A method of joining the lining segments in a circumferential direction with the lining segments.
So that the first joint members of the
In, and placed in contact, then the rod-shaped body, fitted with the second coupling member child
With the above, the lining segments arranged in the circumferential direction
Bonding of lining segments, characterized by joining cattle
Method.