JP2599684B2 - Segment joint structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment joint structure used for lining a shield tunnel.

[0002]

2. Description of the Related Art A conventional segment used for lining a shield tunnel generally connects the segments with bolts to form an annular segment ring, and further connects the segment rings with bolts continuously in the tunnel axial direction. Connected to form the primary lining of the tunnel.

[0003] In order to connect the bolts, the joint portion of the conventional concrete segment is, as shown in FIG.
A joint fitting 201 having a joint plate 201a is provided, and the joint plate 201a is fastened by a nut and a bolt 202. Similarly, the joint plate of the steel segment or the composite segment is fastened with nuts and bolts.

[0004]

However, when a tensile stress acts on the segment having the joint structure shown in FIG. 8, the joint plate 201a is likely to be deformed, and the joint has the opening 2.
03, causing water in the shield to leak to the outside.

When the primary lining of the tunnel is used for an underground river or a water pipe, an internal pressure is generated in a segment ring, and a tensile stress acts on a segment joint. In order to cope with this tensile stress, a reinforcement method in which a secondary lining is provided in the segment ring is known.However, a very large amount of reinforcing steel and concrete thickness is required. Can be difficult to use.

The present invention has been made in view of such a conventional problem, and an object of the present invention is to solve the problem even when an internal pressure is generated in a shield and a tensile stress acts on a segment joint.
An object of the present invention is to provide a segment joint structure that does not open.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned object, and a gist of the invention is a concrete segment joint structure used for lining a shield tunnel. Opposite position of joint surface
At least a pair or more of the joint plates arranged on the location, less formed inside respective segments via the coupling plate
Both are provided with more than one pair of box parts and multiple pieces for each pair of joint plates
A plurality of bolts with respect to the joint plate.
Arrange them in parallel so that they extend substantially perpendicularly, and
One end is fixed inside a different segment for each
Through the joint plate and differ for each adjacent bolt
Place the box portion of the segment, a fixing means for fixedly one end of each bolt within the segment, characterized by comprising a locking member for locking the coupling plate through said respective bolt the other end In the segment joint structure.

Another aspect of the present invention is a concrete segment joint structure used for lining a shield tunnel, wherein the concrete segment joint structure is separated from a joint surface of two adjacent segments by a predetermined distance and its longitudinal direction is parallel to the joint surface. A substantially rectangular box formed inside the segment and one end is fixed inside the segment, and the other end is extended substantially perpendicular to the joint surface, and the box and the joint surface and adjacent A bolt penetrating to the box portion of the other segment to be fixed, fixing means for fixing one end of the bolt inside the segment, and a locking member for locking the other end of the bolt to the box portion, The bolts are alternately extended from one of the adjacent segments, and the bolts penetrate the box portion of the other segment that is abutted, and are alternately locked to different box portions. In the structure.

Furthermore, the gist of the present invention is a steel segment joint structure used for lining the shield tunnel, and the joint plate arranged on the joint surface, a predetermined length apart from the coupling plate, in parallel with the joint plate A vertical rib formed inside the segment, one end of which penetrates the vertical rib and is locked to the vertical rib, and the other end is extended substantially perpendicular to the joint plate, and protrudes from the joint plate. And adjacent segments
A bolt passing through to the joint plate consists of a locking member which bolt tip and the through is engaged with the coupling plate penetrating, said bolt is extended alternately from the segment of a respective one of the adjacent, abutted other And the other joint plate penetrates the other joint plate .

[0010]

In the segment joint structure according to the present invention, in adjacent segments, bolts penetrating the abutting joint plate or the joint are alternately locked and fixed to the joint in different directions. Therefore, when a tensile stress is applied between the adjacent segments, the tensile stress is sequentially transmitted from both the segment bodies to the respective bolts, the locking means disposed on the other segment, and the joint of the other segment. Flows from the direction. Accordingly, the abutting joints are pulled from different sides in opposite directions (opposite directions), and the tensile stress is converted into a force for crimping the abutted joints together.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a first embodiment according to the first aspect, in which (a) is a partial plan view of the segment joint structure of the present invention, and (b) is a cross-sectional view along AA. In the segment joint structure 10 of the first embodiment, in two adjacent concrete segments 11a, 11b, joint plates 12a, 12 arranged at three places where the respective segment joint surfaces come into contact with each other.
b, and three boxes formed inside the respective segments through the joint plates 12a and 12b.
3a, 13b and two adjacent segments 11a, 1
1b, bolts 14a, 14b penetrating, and washers 17a, 17b and nuts 18 as fixing means for fixing one end of the bolts 14a, 14b inside the segment.
a, 18b and the other ends of the bolts 14a, 14b
Washers 15a as locking members for locking to 2a and 12b,
The main part is constituted by 15b and nuts 16a and 16b. Components other than the main portion include box portions 19 formed at three locations inside the segments 11a and 11b.
a, 19b, three bolt through holes 20a provided inside the segment 11a between the box portion 19a and the box portion 13a, and inside the segment 11a between the box portion 19b and the box portion 13b. Three bolt through holes 20
b.

The joint plates 12a and 12b are integrally formed as joint fittings (not shown) and are formed together with concave box portions 13a and 13b on the joint surface. Each of the joint plates 12a and 12b has two bolt holes (not shown) formed at corresponding positions when they are brought into contact with each other. When the joint fitting is provided to stabilize the joint fitting, an anchor bar (not shown) is attached to the fitting and fixed.

The box portion 19a extends from one hole of the joint plate 12a in a direction substantially perpendicular to the joint surface by a predetermined length and is provided inside the segment 11a. The box portion 19b is provided on the other side of the joint plate 12b. The hole is extended by a predetermined length in a direction substantially perpendicular to the joint surface from the hole, and is provided at each of three places inside the segment 11b.

The bolt 14a passes from the box 19a through the bolt through hole 20a and the box 13a to the joint plates 12a, 12b.
It penetrates and arranges. One end of the bolt 14a is fixed to the box 19a with a washer 17a and a nut 18a,
The other end is a joint plate 12b formed by a washer 15b and a nut 16b.
Fixed to On the other hand, the bolt 14b passes from the box portion 19b through the bolt through hole 20b and the box portion 13b to the joint plates 12b, 1b.
It penetrates and arranges to 2a. One end of the bolt 14b is fixed to the box 19b by a washer 17b and a nut 18b, and the other end is connected to the joint plate 1 by a washer 15b and a nut 16a.
2a. Thus, the two bolts 14a, 14b penetrating the pair of abutted joint plates 12a, 12b
Are alternately locked on different surfaces of the joint plates 12a, 12b by washers 15a, 15b and nuts 16a, 16b.

FIG. 7 shows the joint plates 12a, 12a of the first embodiment.
It is an enlarged view near b. Hereinafter, transmission of force when a tensile stress acts on the segment joint structure of the present invention will be described with reference to FIGS. 1 and 7. Segments 11a, 11
When a tensile stress T acts between b, the tensile stress T is dispersed and transmitted as a tensile stress T1 to each of the three bolts 14a and 14b fixed to the respective segment plates 11a and 11b. Due to the tensile stress T1, the three bolts 14a pull the contacted joint plates 12a, 12b in the direction of the arrow A from the joint plate 12b side via the washer 15b and the nut 16b, while the three bolts 14a. 14b is a joint plate 12 abutted through a washer 15a and a nut 16a.
a and 12b are pulled in the direction of arrow B from the joint plate 12a side. Thus, the washer 15a and the nut 16a and the washer 15b and the nut 16b
To pull a, 12b in opposite directions from different sides,
Here, the tensile stress T1 is determined by the contacted joint plates 12a,
12b are converted into a force for mutually pressing each other. As described above, even when the tensile stress T acts between the segments 11a and 11b, the joint plates 12a and 12b can increase the press-fitting force by the tensile stress T without causing openings.

In the following second to fifth embodiments, similarly to the above-described first embodiment, when a tensile stress acts on each adjacent segment, the joint plate or the joint portion which is in contact with the adjacent segment is applied. The staggered washers and nuts convert the tensile stress from the bolt into a crimping force between the joint plates or joints.

FIG. 2 shows a second embodiment according to the first aspect of the present invention, in which (a) is a partial plan view of the segment joint structure of the present invention, and (b) is a sectional view taken along line BB. The main part of the segment joint structure 30 of the second embodiment is different from that of the first embodiment in that one ends of the bolts 34a, 34b are anchored inside the segments 31a, 31b. 38b and connectors 37a and 37b. In the same configuration as the main part of the first embodiment, in two adjacent concrete segments 31a and 31b, joint plates 32a and 32b arranged at three contacting portions of respective segment joint surfaces, and these joint plates are provided. 32
a, 32b, three box portions 33a, 33b formed inside the respective segments, and bolts 34a, 34a penetrating into two adjacent segments 31a, 31b.
34b and the ends of the bolts 34a, 34b
washers 35a, 3 as lock members for locking the lock members 35a, 32b
5b and nuts 36a and 36b.

As in the first embodiment, the joint plates 32a and 32b are integrally formed as joint fittings (not shown) and are embedded in the joint surface and formed together with the box portions 33a and 33b. Each of the joint plates 32a and 32b is formed with two bolt holes (not shown) at corresponding positions when they are brought into contact with each other. Further, when burying the fitting in order to stabilize the buried fitting, an anchor bar (not shown) is attached to the fitting and fixed.

The anchor bolt 38a is connected to the joint plate 32
a, which is embedded in a line extending in a direction substantially perpendicular to the joint surface from one of the holes a and inside the segment 31a, one end of which protrudes into the box portion 33a. The anchor bolt 38b is embedded in a line extending in a direction substantially perpendicular to the joint surface from the other hole of the joint plate 32b and inside the segment 31b, and one end of the anchor bolt 38b projects into the box portion 33b.

The bolt 34a has a connector 37a at one end.
Is connected to the anchor bolt 38a, and the other end thereof penetrates the pair of abutted joint plates 32a and 32b, and the joint plate 32b
It is locked and fixed by a washer 35b and a nut 36b. On the other hand, one end of the bolt 34b is connected to the connector 37b.
Is connected to the anchor bolt 38b, and the other end penetrates the pair of abutted joint plates 32a, 32b to form the joint plate 32a.
It is locked and fixed by a washer 35b and a nut 36b. Thus, the pair of abutted joint plates 32a, 32
The two bolts 34a, 34b penetrating through the 2b are alternately mounted on the different surfaces of the joint plates 32a, 32b with the washers 15a, 1b.
5b and the nuts 16a and 16b are locked and fixed.

FIG. 3 shows a third embodiment according to the second aspect of the present invention, in which (a) is a partial plan view of the segment joint structure of the present invention, and (b) is a sectional view taken along the line CC. In the segment joint structure 40 of the third embodiment, the joint surfaces 65a, 65b are formed in two adjacent concrete segments 41a, 41b.
, And a plurality of bolts 45 penetrating into two adjacent segments 41a and 41b, and the rectangular portions 43a and 43b are formed inside the segments in a longitudinal direction parallel to the joint surface. 46, 47, 48 and the bolt 4
One end of 5, 46, 47, 48 is connected to segment 41a,
Washers 57a, 5 as fixing means fixed inside 41b
7b, 61a, 63b and nuts 58a, 60b, 62
a, 64b and a washer 5 as a locking member for locking the other ends of the bolts 45, 46, 47, 48 to the box portions 43a, 43b.
7b, 59a, 61b, 63a and nuts 58b, 60
The main part is constituted by a, 62b and 64a. Components other than the main part include segments 41a and 41b.
Box portions 53, 54, 55,
56, bolt through holes 49, 49 ', and 49 "communicating from the box 53 to the box 43b via the box 43, and three similar bolt through holes other than the bolt through holes. There is.

The bolt 45 is provided to penetrate from the box 53 to the box 43b through the bolt through hole 49, the box 43a, the bolt through hole 49 'and the bolt through hole 49 ". One end of the bolt 45 is provided. , Is fixed to the box portion 53 by a washer 57a and a nut 58a, and the other end is provided by a washer 57b and a nut 58b.
And is fixed to the box 43b. On the other hand, the bolt 46 is disposed so as to pass from the box portion 55 to the box portion 43a through the bolt through hole 50, the box portion 43b, the bolt through hole 50 ', and the bolt through hole 50 ". One end of the bolt 46 is provided with a washer. 59
b and the nut 60b are fixed to the box 55, and the other end is fixed to the box 43a by the washer 59a and the nut 60a. Thus, the pair of abutted joint portions 42a, 42
The two bolts 45 and 46 penetrating through the joint 42
box portions 43a, 43b different from each other across
Washers 57b, 59a and nuts 58b, 60
a and locked. Similarly, the bolts 47 and 48 are alternately locked and fixed to the different box portions 43a and 43b with washers and nuts across the joint portions 42a and 42b.

FIGS. 4A and 4B show a fourth embodiment according to claim 2, wherein FIG. 4A is a partial plan view of the segment joint structure of the present invention, and FIG. The main part of the segment joint structure 70 of the fourth embodiment differs from that of the third embodiment in that one end of each of the bolts 75, 76, 77, 78 is fixed as fixing means for fixing the inside of the segments 31a, 31b. They are anchor bolts 83, 85, 87, 89 and connectors 84, 86, 88, 90. In the same configuration as the main part of the third embodiment, the joint surfaces 99a and 99 are formed in two adjacent concrete segments 71a and 71b.
b, box-shaped portions 73a and 73b each having a substantially rectangular shape formed inside the segment with a predetermined length away from b and the longitudinal direction being parallel to the joint surface;
Four bolts 75, 76, 77, 78 penetrating into two adjacent segments 71a, 71b, and a locking member for locking the tips of the bolts 75, 76, 77, 78 to the box portions 73a, 73b. Washers 91, 93, 95, 97 and nuts 92, 94, 96, 98. Components other than the main part include bolt through holes 79 ′ and 79 ″, 80 ′ and 80 ″, 81 ′ and 81 ″, and 82 ′ and 82 ″ communicating from the box 73 a to the box 73 b. There is.

The anchor bolt 83 is embedded in a line extending in a direction substantially perpendicular to the joint surface 99a from the bolt through holes 79 'and 79 "and inside the segment 71a, and one end of the anchor bolt 83 is connected to the box portion 73a. The anchor bolt 87 is provided with the bolt through holes 80 'and 8'.
0 "on a line extending in a direction substantially perpendicular to the joint surface 99a,
In addition, it is embedded inside the segment 71b, and one end of the segment 71b projects into the box portion 73b. The anchor bolts 85, 89 are also provided on the segments 71a, 71b similarly to the anchor bolts 83, 87.

The bolt 75 has one end connected to the anchor bolt 83 by a connector 84, the other end passing through a pair of abutted joints 72a, 72b, and a washer 9 attached to the box 73b.
It is locked and fixed by the nut 1 and the nut 92. On the other hand, the bolt 76 has one end connected to the anchor bolt 87 by the connector 88 and the other end connected to the pair of abutted joint portions 72.
a and 72b, and a washer 93 and a nut 9
4 and fixed. Similarly, the bolts 77 and 78 have segments 71a and
71b. Thus, the four bolts 75, which penetrate the pair of abutted joint portions 72a, 72b,
76, 77, 78 are alternately mounted to the different box portions 73a, 73b across the joint portions 72a, 72b.
1,93,95,97 and nuts 92,94,96,98
And are locked and fixed. 5A and 5B show a fifth embodiment according to claim 3, wherein FIG. 5A is a partial plan view of the segment joint structure of the present invention, and FIG. The segment joint structure 100 according to the fifth embodiment includes joint plates 102a and 102b disposed on the joint surface of a steel segment, a segment 1 parallel to the joint plate and spaced apart from the joint plate by a predetermined length.
Vertical ribs 109a, 1 formed inside 01a, 101b
09b, six bolts 103a, one end of which is locked through the vertical rib 109a and the other end of which is substantially perpendicular to the joint plates 102a, 102b, and one end of which is locked by the vertical rib. 109b, and the other end is connected to the joint plate 102.
a and 102b, six bolts 103b penetrated substantially vertically and locked, and the penetrated bolts 103a, 103b
Washers 104a, 104b as locking members for locking the joint plates 102a, 102b having penetrated ends and nuts 10
A main part is constituted by 5a and 105b. Components other than the main part include washers 106a and 106b disposed between the heads 107a and 107b of the bolts 103a and 103b and the vertical ribs 109a and 109b, and the vertical rib 109
a, 109b and the joint plates 102a, 102b
There are horizontal ribs 108a and 108b on which the sheets are arranged.

Twelve bolt holes (not shown) are formed in the joint plates 102a and 102b at corresponding positions when they are brought into contact with each other.

The vertical ribs 109a and 109b are formed with six bolt holes, respectively. Of these bolt holes, for example, the bolt holes 110 "of the vertical rib 109b are connected to the joint plate 10a.
2a, 102b are formed on the extension perpendicular to the joint surface from the bolt holes 110 '.
1 "is formed on the joint plate 102a, 102b in a direction perpendicular to the joint surface from the bolt hole 111 '. Thus, the respective bolt holes of the longitudinal ribs 109a, 109b are connected to the joint plate 1a.
It is formed so as to correspond to every other bolt hole of 02a and 102b.

The bolt 103a has a longitudinal rib 109a at one end.
Through the bolt hole 107, and is locked by the bolt head 107a.
a, 102b, and a washer 104b and a nut 105
b and locked. On the other hand, bolt 103b
One end penetrates the bolt hole of the vertical rib 109b and is locked by the bolt head 107b, and the other end penetrates the pair of abutted joint plates 102a and 102b to form the washer 104a and the nut 105a. Is locked and fixed. Thus, the pair of abutted joint plates 102a, 1
02b through each of the six bolts 103a, 103b
The studs 104a, 104b and the nut 10 are alternately arranged from different surfaces with the joint plates 102a, 102b interposed therebetween.
5a and 105b lock and fix.

FIG. 6 shows a variation of the arrangement of the washer and the nut when the bolt is locked and fixed to the abutted joint plate in the segment joint structure of the present invention. In this joint structure 120, a washer 125a and a nut 126a penetrate the joint plates 122a and 122b and are provided on the joint plate 122a side.
And two bolts 124b locked and fixed by the joint plates 122a and 122b and
A single bolt 124a is fixed to the 2b side by being locked by a washer 125b and a nut 126b. For example, by arranging this combination in the boxes 13a and 13b of the first embodiment, the boxes 33a and 33b of the second embodiment, and the joint of the fifth embodiment, the same effect as in the above embodiment can be obtained. Can be.

[0031]

As described above, according to the segment joint structure of the present invention, even when an internal pressure is generated in the shield and a tensile stress acts on the segment joint, the segment joint is not opened by the tensile stress but rather by the tensile stress. The crimping force can be increased.

[Brief description of the drawings]

1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a partial plan view of a segment joint structure of the present invention, and FIG.
It is -A sectional drawing.

FIGS. 2A and 2B show a second embodiment of the present invention, wherein FIG. 2A is a partial plan view of the segment joint structure of the present invention, and FIG.
It is -B sectional drawing.

3A and 3B show a third embodiment of the present invention, wherein FIG. 3A is a partial plan view of the segment joint structure of the present invention, and FIG.
It is -C sectional drawing.

4A and 4B show a fourth embodiment of the present invention, wherein FIG. 4A is a partial plan view of the segment joint structure of the present invention, and FIG.
It is -D sectional drawing.

5A and 5B show a fifth embodiment of the present invention, in which FIG. 5A is a partial plan view of the segment joint structure of the present invention, and FIG.
It is -E sectional drawing.

FIG. 6 shows an embodiment of the present invention other than the first to fifth embodiments.

FIG. 7 is an enlarged view near the joint plates 12a and 12b of the first embodiment.

FIG. 8 is a partial plan view of a conventional segment joint structure.

[Explanation of symbols]

10, 30, 40, 70, 100 Segment joint structure 12a, 12b, 32a, 32b, 102a, 102b
Joint plates 42a, 42b, 72a, 72b Joint portions 13a, 13b, 33a, 33b, 43a, 43b, 7
3a, 73b box parts 14a, 14b, 34a, 34b, 45, 46, 47,
48, 75, 76, 77, 78, 103a, 103b
Bolts 15a, 15b, 35a, 35b, 57b, 59a, 6
1b, 63a, 91, 93, 95, 97, 104a, 1
04b Washer (locking member) 16a, 16b, 36a, 36b, 58b, 60a, 6
2b, 64a, 92, 94, 96, 98, 105a, 1
05b Nut (locking member) 38a, 38b, 83, 85, 87, 89 Anchor bolt (fixing means) 37a, 37b, 84, 86, 88, 90 Connector (fixing means) 17a, 17b, 57a, 59b, 61a, 63b, 1
06a, 106b Washers (fixing means) 18a, 18b, 58a, 60b, 62a, 64b, 1
07a, 107b Nut (fixing means)

Claims (3)

(57) [Claims] 1. A concrete segment joint structure used for lining a shield tunnel, wherein the concrete segment joint structure is disposed at a position facing a joint surface of two adjacent segments.
Comprising at least one or more pairs of the joint plate, at least a pair or more of the box portion is formed in each of the segments inwardly through the joint plate, and a plurality of provided bolts for each pair of joint plates were multiple
Bolts extend substantially perpendicular to the joint plate
And a different segment for each adjacent bolt
One end is fixed inside the connector and the other end is penetrated from the joint plate.
And placed in a box of different segments for each adjacent bolt
And, fixing means and said segment joint structure characterized by comprising a locking member for locking the coupling plate through each bolt the other end of fixed to one end of each of the bolts inside the segment. 2. A concrete segment joint structure used for lining a shield tunnel, wherein the concrete segment joint structure is separated from a joint surface of two adjacent segments by a predetermined length, and has a longitudinal direction formed substantially parallel to the joint surface inside the segment. A box portion of a rectangular parallelepiped, one end is fixed inside the segment, the other end is extended substantially perpendicular to the joint surface, and the box portion and the joint surface and the box portion of the other adjacent segment A penetrating bolt; fixing means for fixing one end of the bolt inside the segment; and a locking member for locking the other end of the bolt to the box portion. A segment joint structure, wherein the bolts penetrate the box portions of the other segments that are alternately extended from and abut against each other, and are alternately locked to different box portions. 3. A steel segment joint structure used for lining the shield tunnel, and the joint plate arranged on the joint surface, a predetermined length apart from the coupling plate, which is formed in the interior segments parallel to the joint plate and the longitudinal ribs, which one end is engaged with the longitudinal ribs through said longitudinal ribs, the other end is extended in a substantially perpendicular with respect to the joint plate, from the joint plate protruding, segment further adjacent A bolt penetrating to the joint plate, and a locking member having a tip of the penetrated bolt locked to the penetrated joint plate, wherein the bolt is alternately extended from one adjacent segment and is in contact with the other segment. segment joint structure through the joint plate segments, characterized in that it is engaged with the joint plate of the other.