JPH04117100U - tunnel segment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a tunnel segment that allows easy connection of adjacent parts and has a simple structure and a high-strength connection part. [Structure] A pair of abutting ends 3, 4 are provided for adjacent segment bodies 2, 2 on both sides in the tunnel circumferential direction, and a connecting part 5 for connecting the adjacent segment bodies 2, 2, 2 is provided at both abutting ends. Each department has one. To configure the connecting portion 5, a plurality of convex portions 6 protruding in the circumferential direction of the tunnel are arranged at each of the abutting ends in a plurality of upper and lower stages, and
The vertically adjacent ones are arranged with their positions shifted in the lateral direction. When the convex parts 6, 6 provided on the adjacent segment bodies 2, 2 are fitted into the concave part 7 adjacent to the convex part 6, the convex parts 6, 6, 6 of both segment bodies 2, 2, 2, respectively.
The insertion pin hole 9 for the connecting pin 8 connecting the two,
It is provided on the convex portion 6.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention has abutting ends against adjacent segment bodies on both sides in the circumferential direction of the tunnel. A pair of connecting portions are provided, and a connecting portion for connecting adjacent segment bodies is connected to the both ends. The present invention relates to tunnel segments provided at each mating end.

0002

[Conventional technology]

Traditionally, in tunnel segments, adjacent segments in the circumferential direction of the tunnel The butt end has an end surface that is substantially flat over the entire width, and For connecting the butt segments, the connections provided at the butt ends are fastened. with a bolt mounting hole for use and an operation opening recess for tightening bolts and nuts. It consisted of Then, connect the segments to each other after overlapping the mounting holes of both segments. , insert the bolt from the operation opening recess into both mounting holes, and insert the bolt into the nut. This was done by signing an agreement with

0003

[Problem that the idea aims to solve]

However, in the tunnel segment with the above conventional configuration, the segment Connecting them together requires the labor-intensive work of tightening them with bolts and nuts. However, in this work, unlike normal bolt fastening work, the bolts are tightened. The tying operation must be carried out within the operating opening recess with limited space, and the operation may be The drawback was that it was difficult and the connection work took time and effort.

0004 Furthermore, with the flat end faces of the butt ends butted together, connect both segment bodies. , because the bolts were connected in the circumferential direction, the entire earth pressure acting on the joint was removed after the connection. act as a shear force on the bolts, resulting in an increase in the number of bolts or In this case, it is necessary to increase the strength of the joint by increasing the diameter of the bolt. In this case, the problem is that the connection work becomes even more labor-intensive. Ma In addition, even if the number of bolts is increased, the conventional structure described above has problems with the connection part. All of the earth pressure that acts on the bolt still acts as a shearing force, so there is no improvement. There was also a limit to how strong it could be. The purpose of this invention is to eliminate the above-mentioned conventional drawbacks and to simplify the connection work between segment bodies. It is easy to carry out, and has a simple structure and high-strength joints. The purpose is to provide segments for

[0005]

[Means to solve the problem]

In order to achieve the above object, the present invention includes two butt ends that constitute a connecting part. In each case, a plurality of convex portions protruding in the circumferential direction of the tunnel are arranged in multiple stages above and below, and , the vertically adjacent ones are arranged with their positions shifted in the lateral direction, and the convex part has a When the convex part provided on the segment body adjacent to the adjacent concave part is inserted, both segments The insertion pin hole for the connecting pin that connects the convex parts of each of the main body parts is inserted into the convex part. The function and effect are as follows.

[0006]

[Effect]

That is, the butt ends against the adjacent segment bodies on both sides in the circumferential direction of the tunnel. The part is composed of a convex part and a concave part that protrude in the circumferential direction of the tunnel. By fitting the convex part of the other segment body into the concave part of the other segment body, Therefore, both segment bodies can be fitted together, and then the By inserting a pin into the pin hole, both can be brought into a pin-connected state. In this way, with this invention, both segments can be connected simply by mating and inserting the pin. Bodies can be easily connected.

[0007] Then, the convex portions are arranged in multiple stages above and below the abutting end, and are adjacent to each other vertically. Because the segments are placed horizontally shifted from each other, one segment The protrusion of the other segment body fitted into the recess of the segment body and the one segment The convex part of the main body can be placed adjacent to the convex part in the vertical direction, and as a result, it acts on the connecting part. Earth pressure can now be supported not only by pins but also by convex parts, which is better than conventional methods. The strength of the joints can be greatly improved with a simple structure.

[0008]

[Effect of the idea]

Therefore, the connection work can be made easier, and the strength of the connection part can be improved with a simple structure. It is easy to work and construct, and is safe even after connection. We have now been able to provide tunnel segments with high performance.

[0009]

【Example】

Next, embodiments of the present invention will be described with reference to the drawings.

0010 Figures 1, 2, and 3 show that on the inner peripheral surface of the tunnel, there are multiple Figure 1 shows the tunnel segment 1 in place. This tunnel segment 1 is Cover the entire inner surface of the tunnel with the ends butted against each other in the circumferential and axial directions. They are connected across the tunnel to form the inner wall of the tunnel.

[0011] A reinforcing steel cage (not shown) is buried to constitute the tunnel segment 1. In this state, use concrete to shape the segment body 2 into the cross-sectional shape of the tunnel. Together, they are formed into a curved plate shape, and in the circumferential direction of this segment body 2 (this circumferential direction). The direction coincides with the circumferential direction of the tunnel. ) both ends, i.e. segments for adjacent tunnels At the butt ends 3, 4 of the segments 1, 1 against the segment bodies 2, 2, both segments are attached. A connecting portion 5 for connecting the main bodies 2, 2 is provided.

0012 The connecting portion 5 is composed of a plurality of uneven portions provided on both abutting ends 3 and 4, The convex portion 6 protruding in the circumferential direction of the segment body 2, that is, in the circumferential direction of the tunnel, is One on the top of the butt end 3, two on the bottom, and on the top of the other butt end 4. Two pieces, one on the bottom, were arranged, and the vertically adjacent convex parts 6 were misaligned in the lateral direction. The upper protrusion 6 and the lower protrusion 6 are staggered by one pitch so that the The upper and lower protrusions 6 are provided with pin holes 9 in the axial direction of the tunnel. be. Further, a recess 7 is formed adjacent to the protrusion 6, and an adjacent segment The convex portions 6, 6 provided on the main body 2 can be fitted into the concave portion 7.

[0013] The pin holes 9 fit the protrusions 6, 6 of the adjacent segment bodies 2, 2 into the recesses 7. After inserting, connect the convex parts 6, 6, 6 of both segment bodies 2, 2, 2 with pins. It is set up for this purpose.

[0014] The ends of the convex portions 6 are formed in an S-shape when viewed in the axial direction of the tunnel, and are connected to both segment bodies. 2, 2 can be rotated somewhat relative to each other around the pin 8.

[0015] [Another example] One convex part 6 and one concave part 7 are formed in the upper part of the butt end part 3, and these parts are formed in the lower part. Similarly, one concave part 7 and one convex part 6 are formed with the pitch shifted from the concave part and the convex part 6. It's okay.

[0016] The convex portions 6 may be provided in three or more stages vertically. In addition, in the above example, the upper row The convex portion 6 and the lower convex portion 6 were laterally displaced by one pitch, but the positional displacement may be smaller than in this case.

[0017] In addition, in order to facilitate comparison with the drawings, symbols are written in the scope of claims for utility model registration. However, the present invention is not limited to the configuration shown in the attached drawings.

[Brief explanation of drawings]

[Figure 1] A perspective view showing the connected state of tunnel segments

[Figure 2] Perspective view of main parts of tunnel segment

[Fig. 3] A perspective view showing the work of connecting tunnel segments.

[Explanation of symbols]

2 Segment body 3,4 Butt end 5 Connecting part 6 Convex part 8 Connecting pin 9 pin hole

Claims (1)

[Scope of utility model registration request] [Claim 1] Abutting ends (3), (4) for adjacent segment bodies (2), (2) on both sides in the circumferential direction of the tunnel.
A pair of adjacent segment bodies (2), (2),
(2) A tunnel segment in which a connecting portion (5) for connecting the two abutting ends (3) and (4) is provided at each of the abutting ends (3) and (4); , a plurality of convex portions (6) protruding in the circumferential direction are arranged in a plurality of upper and lower stages on each of the abutting ends (3) and (4), and
A convex portion provided in the concave portion (7) adjacent to the convex portion (6) and in the adjacent segment main body (2), (2), with the vertically adjacent ones being disposed with their positions shifted in the lateral direction. (6), (6) is inserted, the connecting pin (8 ) for insertion pin hole (9)
and a tunnel segment provided on the convex portion (6).