JPH05280291A - Reinforcing and connecting device for segment - Google Patents

Abstract

PURPOSE:To firmly connect together segments by a simple means. CONSTITUTION:A reinforcing member fitting plate 3 made of steel having fastening tool inserting holes is fixed on the tunnel inner face side of a segment 1, and a reinforcing member 5 made of steel having fastening tool inserting holes is additionally provided extending over the reinforcing member fitting plates 3 of adjoining segments 1 assembled along the circumferential wall of the tunnel. The reinforcing member 5 made of steel and the reinforcing member fitting plates 3 made of steel of the respective segments 1 are connected together by means of fastening tools 6 inserted through the fastening tool inserting holes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforced connecting device for a segment used for lining railway tunnels, road tunnels and the like.

[0002]

2. Description of the Related Art Conventionally, as a connecting structure of steel segments used for a tunnel lining, as shown in FIGS. 17 to 19, bolt holes 8 are provided on both sides of an arc-shaped skin plate 7 in the width direction. An arc-shaped main girder 9 is fixed, joint plates 11 having bolt holes 10 are fixed to both ends of the skin plate 7, and a plurality of vertical ribs 12 parallel to the joint plate 11 are provided between the main girders 9. By placing and fixing
The steel segments 13 are constituted, a large number of steel segments 13 thus constituted are arranged in a staggered manner along the peripheral wall of the tunnel, and the adjacent steel segments 13 are connected to the bolt 1
A connection structure of steel segments connected by 4, 15 is known.

[0003]

In the case of the conventional connecting structure of steel segments, when a bending moment in the circumferential direction of the segment acts on the joint portion of the steel segments 13 adjacent to each other in the circumferential direction of the tunnel, A large tensile force acts on the bolts 14 connecting the joint plates 11, so that the joint plates 11 bend and yield first, so the rigidity of the joint portions of the steel segments 13 adjacent in the tunnel circumferential direction is low,
Moreover, there is a problem that the strength of the joint is low. Further, in the joint portion between the segment rings, the main girder 9 bends and yields against the bending moment in the axial direction of the tunnel, so that the joint portion between the segment rings has low rigidity and the joint portion has low strength. was there.

[0004]

In order to advantageously solve the above-mentioned problems, in the segment reinforcement coupling device of the present invention, a steel reinforcement having a fastener insertion hole 2 on the tunnel inner surface side of the segment 1. A steel reinforcing member 5 having a fastener insertion hole 4 is additionally provided over the steel reinforcing member mounting plate 3 of the adjacent segments 1 assembled along the peripheral wall of the tunnel with the member mounting plate 3 fixed. The steel-made reinforcing member 5 and the steel-made reinforcing member mounting plate 3 of each segment 1 were connected to each other through the fastener inserting holes 2 and 4 by the inserted fastener 6.

[0005]

4 and 5 show steel reinforcing member mounting plate steel segments used in the first embodiment of the present invention, in which bolts are provided on both sides of the arc-shaped skin plate 7 in the width direction. The arc-shaped main girders 9 having the holes 8 are fixed by welding, the joint plates 11 having the bolt holes 10 are fixed by welding to the both ends of the skin plate 7, and both ends of the joint plate 11 are the main girders 9. A plurality of vertical ribs 12 fixed to the joint plate 11 in parallel with the joint plate 11 are arranged at intervals in the longitudinal direction of the skin plate 7 and fixed to the skin plate 7 and each main girder 9 by welding. ,
The skin plate 7, the main girders 9, the joint plates 11, and the vertical ribs 12 form a steel segment 1.

Vertical ribs 12 in the steel segment 1
Steel reinforcing member mounting plate 3 having a plurality of fastener insertion holes 2 is arranged at the end portion on the inner surface side of the tunnel and the end portion on the inner surface side of the tunnel of the joint plate 11, and the steel reinforcing member in the middle portion is arranged. The mounting plate 3 is fixed to the vertical ribs 12 and the main girder 9 by welding, and the steel reinforcing member mounting plate 3 at the end is fixed to the joint plate 11 and the main girder 9 by welding. And the surface of the steel reinforcing member mounting plate 3, that is, the surface on the inner surface side of the tunnel, are arranged on the same surface so that no step is formed.

FIG. 6 shows a steel reinforcing member 5 used in the first embodiment of the present invention, in which the steel reinforcing member mounting plate 3 is attached to the steel reinforcing member 5 made of a flat plate steel plate.
A large number of fastener insertion holes 4 are provided at positions that match the fastener insertion holes 2.

1 to 3 show a reinforcement connecting device for a segment according to a first embodiment of the present invention, in which a steel segment 1 having a steel reinforcing member mounting plate 3 is a tunnel ground. Staggeredly arranged along the peripheral wall of the mountain, the joints of the segments that are adjacent to each other in the tunnel circumferential direction are between the segment rings that are adjacent to each other in the tunnel axial direction.
It is arranged so that it does not overlap in the axial direction of the tunnel. The joint plates 11 of the segments 1 that are adjacent to each other in the tunnel circumferential direction are tightened and connected by bolts 14, and the main girders 9 of the segments 1 that are adjacent to each other in the tunnel axial direction are tightened and connected by the bolts 15. And the reinforcing members 5A, 5 made of steel over the surface of the reinforcing member mounting plate 3 made of steel in the segments 1 adjacent to each other in the circumferential direction of the tunnel.
B and 5C are attached to each steel reinforcing member 5A, 5B and 5C.
The steel reinforcing member mounting plate 3 and the steel reinforcing member mounting plate 3 are fastened to each other by a fastener 6 made of a bolt inserted through the fastener insertion holes 2 and 4.

9 and 10 show a steel segment with a steel reinforcing member mounting plate used in the second embodiment of the present invention, in which the end of the vertical rib 12 of the steel segment 1 on the inner surface side of the tunnel. A steel reinforcing member attachment plate 3 having a plurality of fastener insertion holes 2 is arranged in the portion so as to form an L shape and is fixed by welding, but other configurations are shown in FIGS. It is similar to the case of the segment shown in.

FIG. 11 shows a flat plate steel reinforcing member 5 having a fastener insertion hole 4 used in the second embodiment of the present invention.
Is shown.

FIG. 7 and FIG. 8 show a reinforcement connecting device for a segment according to a second embodiment of the present invention, in which a steel segment 1 provided with a steel reinforcing member mounting plate 3 is a tunnel ground. The joint plates 11 of the segments 1 that are arranged in a staggered manner along the peripheral wall of the mountain and are adjacent to each other in the tunnel circumferential direction are tightened and coupled by the bolts 14, and the main girders 9 of the segments 1 that are adjacent to each other in the tunnel axial direction are Steel reinforcing members 5A and 5C are additionally provided over the surfaces of the steel reinforcing member mounting plates 3 in the segments 1 adjacent to each other in the tunnel axial direction by tightening and connecting with the bolts 15, and the steel reinforcing members 5A and 5C are attached.
C and the steel reinforcing member mounting plate 3 are fastened and coupled by a fastening tool 6 formed of a bolt inserted through the fastening tool insertion holes 2 and 4.

12 and 13 show another example of the cross section of the steel reinforcing member 5 that can be used when the present invention is carried out. In the case of FIG. 12, a steel material having an H-shaped cross section is used. In the case of FIG. 13, a steel material having a U-shaped cross section is used.

The invention can also be implemented in reinforced connections of concrete segments. Further, when the present invention is carried out, a rivet may be used as the fastening tool 6. In the above embodiment, the segments 1 are arranged in a staggered manner, but the segments 1 may not be arranged in a staggered manner.

The sectional shape of the steel reinforcing member 5 may be T-shaped or any other sectional shape. Generally, the reinforcing effect of the joint portion of the segment by the steel reinforcing member 5 changes depending on the cross-sectional shape of the cut surface of the steel reinforcing member 5 on the plane including the segment joint surface.
If a cross section having an H-shape, a U-shape, a T-shape, etc. is used, the effect of reinforcing the joint portion of the segment can be remarkably enhanced.

FIGS. 14 to 16 show a third embodiment of the present invention, in which the steel reinforcing member mounting plate 3 is vertically projected in a state in which it projects more toward the tunnel inner surface side than the tunnel inner surface of the segment 1. Although fixed to the ribs 12 and the main girders 9 by welding, the other structures are the same as in the case of the first embodiment.

In the case of each of the above-mentioned embodiments, the heads of the bolts constituting the fastener 6 are arranged on the front surface of the steel reinforcing member 5, and the nuts are arranged on the rear surface of the steel reinforcing member mounting plate 3. However, conversely, the heads of the bolts forming the fastener 6 may be arranged on the back surface of the steel reinforcing member mounting plate 3 and the nuts may be arranged on the front surface of the steel reinforcing member 5.

[0017]

According to the present invention, the steel reinforcing member mounting plate 3 having the fastener insertion hole 2 is fixed to the inner surface of the tunnel of the segment 1 and the adjacent segments 1 assembled along the tunnel peripheral wall. Over the steel reinforcing member mounting plate 3 of
A steel reinforcing member 5 having a fastener inserting hole 4 is additionally provided, and the steel reinforcing member 5 and the steel reinforcing member mounting plate 3 of each segment 1 are provided over the fastener inserting holes 2 and 4. Since the fasteners 6 are inserted and connected, the tunnel lining segment 1 can be firmly connected by a simple means.

[Brief description of drawings]

FIG. 1 is a side view showing a reinforcement connecting device for a segment according to a first embodiment of the present invention.

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

FIG. 3 is a vertical sectional front view showing a part of FIG. 2 in an enlarged manner.

FIG. 4 is a partially cutaway perspective view showing a steel segment used in the first embodiment of the present invention.

FIG. 5 is a vertical sectional front view showing a steel segment used in the first embodiment of the present invention.

FIG. 6 is a perspective view showing an example of a steel reinforcing member used in the first embodiment of the present invention.

FIG. 7 is a side view showing a segment reinforcing and connecting device according to a second embodiment of the present invention.

8 is a cross-sectional view taken along line BB of FIG.

FIG. 9 is a partially cutaway perspective view showing a steel segment used in a second embodiment of the present invention.

FIG. 10 is a vertical sectional front view showing a steel segment used in the second embodiment of the present invention.

FIG. 11 is a perspective view showing an example of a steel reinforcing member used in the second embodiment of the present invention.

FIG. 12 is a perspective view showing another example of a steel reinforcing member that can be used when implementing the present invention.

FIG. 13 is a perspective view showing another example of a steel reinforcing member that can be used when implementing the present invention.

FIG. 14 is a vertical cross-sectional front view showing a reinforcement connecting device for a segment according to a third embodiment of the present invention.

FIG. 15 is a partially cutaway perspective view showing a steel segment used in a third embodiment of the present invention.

FIG. 16 is a vertical sectional front view showing a steel segment used in a third embodiment of the present invention.

FIG. 17 is a perspective view showing a conventional steel segment.

FIG. 18 is a side view showing a conventional steel segment connection structure.

19 is a cross-sectional view taken along the line CC of FIG.

[Explanation of symbols]

 1 Segment 2 Fastener Insertion Hole 3 Steel Reinforcement Member Mounting Plate 4 Fastener Insertion Hole 5 Steel Reinforcement Member 6 Fastener 7 Skin Plate 8 Bolt Hole 9 Main Girder 10 Bolt Hole 11 Joint Plate 12 Vertical Rib 13 Steel Made segment 14 bolts 15 bolts

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tashiro ▲ Climb ▼ No. 2 Tsukutocho, Shinjuku-ku, Tokyo Kumagai Gumi Tokyo Head Office

Claims (3)

[Claims] 1. A steel reinforcing member mounting plate 3 having a fastener insertion hole 2 is fixed to an inner surface of a tunnel of a segment 1, and adjacent segments 1 assembled along a peripheral wall of the tunnel.
A steel reinforcing member 5 having a fastener insertion hole 4 is additionally provided over the steel reinforcing member mounting plate 3, and the steel reinforcing member 5 and the steel reinforcing member mounting plate 3 of each segment 1 are Reinforcing and connecting device for a segment connected by a fastener 6 inserted through the fastener insertion holes 2 and 4. 2. A surface of the segment 1 on the inner surface side of the tunnel,
2. The reinforcing connecting device for segments according to claim 1, wherein the surface of the steel reinforcing member mounting plate 3 is arranged on the same plane. 3. Reinforcement connecting device for a segment according to claim 1, wherein the fastener 6 is a bolt.