JP3922536B2 - Lower bundle device for supporting train lines in the tunnel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lower bundle device for supporting a train line, which is attached to a tunnel constructed by connecting precast concrete segments to form an inner wall.
[0002]
[Prior art]
The lower bundle device for supporting the train line is a device for supporting the train line support device such as a movable bracket for supporting the train line on the ceiling of the tunnel. Conventionally, a lower bundle device for supporting a train line is fixed by driving an anchor bolt into a ceiling of a tunnel.
[0003]
[Problems to be solved by the invention]
In recent years, a method has been implemented in which precast concrete segments are connected by bolts and nuts to form the inner wall of the tunnel. In such a saddle road, when an anchor bolt is driven into the segment, the bolt penetrates the segment and it is difficult to obtain sufficient fixing strength.
Accordingly, an object of the present invention is to provide a lower bundle device for supporting a train line that can be securely attached to a saddle that has an inner wall formed by joining segments without driving anchor bolts.
[0004]
[Means for Solving the Problems]
In the present invention, in order to solve the above-mentioned problems, the supporting beam 2 is fixed so as to extend along the ceiling of the tunnel, and the train line supporting device 4 such as a movable bracket is supported at the lower part. The lower bundle device 1 is configured to include the supporting member 3. The connection fitting 5 is protruded from the support beam 2 and is disposed at a position where the connection fitting 5 can be inserted into the connection recess 31c of the connection bolt or nut of the segment 31. The connection fitting 5 is disposed in a direction along the connection end surface of the segment 31 in the recess 31c of the segment 31, and includes a bolt insertion hole 5a through which the connection bolt 32 of the segment 31 is inserted. Then, the connection fitting 5 is fastened together with the segment 31 by the connection bolt 32 of the segment 31 and fixed to the tunnel.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 is a front view of the lower bundle device, FIG. 2 is a side view of the lower bundle device, FIG. 3 is a bottom view of the lower bundle device, FIG. 4 is a cross-sectional view of the connection portion between the connection fitting and the segment, and FIG. It is explanatory drawing of the tunnel which installed.
[0006]
1, 4, and 5, the inner wall of the tunnel is composed of a number of precast concrete segments 31 interconnected by bolts 32. The segment 31 is a concrete plate that is curved in a substantially arc shape. End surfaces of the segments 31 are sequentially abutted in the extending direction of the tunnel, and are interconnected by bolts 32 at a plurality of locations in the circumferential direction. As shown in FIG. 4, one of the segments 31 to be connected has a steel plate 31a embedded in the end surface, and a bolt insertion hole 31b is formed at a required location (a plurality of locations in the circumferential direction) of the steel plate 31a. ing. A recess 31c for operating the bolt 32 is formed in the concrete portion at a position corresponding to the bolt insertion hole 31b. One end of the embedded nut 31d protrudes from the end surface of the other segment 31 at a position corresponding to the bolt insertion hole 31b. Then, the two segments 31 are abutted so that the embedded nut 31d is inserted into the bolt insertion hole 31b, and the bolt 32 inserted from the operation recess 31c is screwed into the embedded nut 31d. Is connected.
[0007]
The lower bundle device 1 includes a support beam 2 fixed to a lower surface of a segment 31 that becomes a ceiling of a tunnel, and a support member 3 fixed to the support beam 2. A train line support device 4 such as a movable bracket is supported under the support member 3.
The support beam 2 is made of a steel material that is curved and extends along the ceiling of the tunnel, and four front, rear, left, and right are installed so as to extend in the transverse direction. At both ends of the support beam 2, connection fittings 5 protrude upward. The mutual interval between the connection fittings 5 is set equal to the mutual interval between the recesses 31c of the segment 31, and the connection fitting 5 is formed with bolt insertion holes 5a corresponding to the bolt insertion holes 31b of the segment 31. . A large number of bolt insertion holes 2 a are arranged in the extending direction in the vertical plate portion of the support beam 2.
[0008]
The support member 3 includes a horizontal arm 6 assembled in a cross beam shape, a vertical arm 7, and a lower bundle body 8 supported by the vertical arm 7.
[0009]
Two horizontal arms 6 are provided in parallel in the front-rear direction so as to connect the two support beams 2, 2 arranged on the left and right. The lateral arm 6 has a plurality of bolt insertion holes 6a selectively corresponding to any of the bolt insertion holes 2a at both ends of the vertical plate portion facing the vertical plate portion of the support beam 2, The position in the traverse direction of the tunnel and the inclination angle with respect to the horizontal can be adjusted with respect to the beam 2. Thereby, the angle of the horizontal arm 6 is made to correspond to the cant angle of the track.
[0010]
Two vertical arms 7 are provided in parallel so as to connect the two horizontal arms 6 and 6 in the extension direction of the tunnel. The horizontal arm 6 is provided with a plurality of bolt insertion holes 6b for connecting the vertical arm 7 with bolts and nuts in the extending direction thereof. Therefore, the vertical arm 7 can adjust its arrangement in the crossing direction of the lane by selecting which bolt insertion hole 6b of the horizontal arm 6 matches the corresponding bolt insertion hole 7b. As a result, when the track has a cant angle, adjustment such as adapting the train line to the position of the pantograph can be performed.
[0011]
The lower bundle body 8 includes a mounting plate 9 and a column 10 that protrudes vertically downward from the center thereof. The mounting plate 9 has a plurality of bolt insertion holes 9 a corresponding to the plurality of bolt insertion holes 7 a formed in the vertical arm 7, and can adjust the position of the longitudinal extension direction with respect to the vertical arm 7. . The train line support device 4 is supported on the support 10 of the lower bundle body 8.
[0012]
The segment 31 may be provided with an anchor bolt instead of the embedded nut 31d and may be interconnected by screwing the nut. In this case, an anchor bolt is inserted into the bolt insertion hole 5 a of the connection fitting 5.
[0013]
The bottom bundling device of the present invention is fixed to the ceiling of the tunnel by means of a support beam 2 provided with a connection fitting 5 corresponding to the connection part of the segment 31, and the specific shape, number and support members of the support beam 2 itself Various changes can be made to the specific structure 3 and the like. The train line support device 4 is not limited to a movable bracket. For example, a support member such as a support arm is supported horizontally via two insulators under a single support beam 2, and a train line support device such as a curved metal fitting can be attached to the support member. . Accordingly, the present invention is not limited to the illustrated embodiment. The segment 31 to which the lower bundle device of the present invention is applied is not limited to the illustrated one. The lower bundle device of the present invention can be applied as long as at least one of the butted segments is provided with a recess 31c for bolt and nut tightening operation.
[0014]
【The invention's effect】
As described above, in the present invention, the lower bundle device 1 is fixed to the ceiling of the tunnel by the support beam 2 provided with the connection fitting 5 corresponding to the connection portion of the segment 31, so that the inner wall is constituted by the combination of the segments. This has the effect that it can be easily and surely attached without driving anchor bolts into the tunnel.
[Brief description of the drawings]
FIG. 1 is a front view of a lower bundle device.
FIG. 2 is a side view of the lower bundle device.
FIG. 3 is a bottom view of the lower bundle device.
FIG. 4 is a cross-sectional view of a connection part between a connection fitting and a segment.
FIG. 5 is an explanatory view of a tunnel with a lower bundle device installed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lower bundle apparatus 2 Support beam 2a Bolt insertion hole 3 Support member 4 Train line support apparatus (movable bracket)
5 Connection fitting 5a Bolt insertion hole 6 Horizontal arm 6a Long hole 7 Vertical arm 7a Bolt insertion hole 8 Lower bundle main body 9 Mounting plate 9a Long hole 10 Post 31 Segment 31a Steel rod 31b Bolt insertion hole 31c Operation recess 31d Embedded nut 32 bolt

Claims (1)

A tunnel that has an inner wall composed of a number of segments made of precast concrete interconnected by bolts, and the connection end faces of each segment in the extension direction of the tunnel are formed in the vicinity of the connection end face of one segment. A lower bundle device for supporting a train line installed on the ceiling of the one connected in the extension direction of the tunnel with bolts or nuts inserted from a place,
Four support beams arranged at the front, rear, left and right of the upper part of the tunnel so as to project the connection fitting at a position where it can be inserted into the recess of the segment and extend along the ceiling of the tunnel,
A support member fixed to the support beam and supporting the train line support device at the bottom;
Each of the support beams extends in the crossing direction of the tunnel along the ceiling of the tunnel, and includes the connection fittings at both ends, and a plurality of the support beams arranged in a row in the transverse direction of the tunnel along the ceiling of the tunnel Bolt insertion hole,
The connection fitting of the support beam is arranged in the direction along the connection end face of the segment in the recess, and has a bolt insertion hole for inserting the connection bolt of the segment, and is fastened together with the segment by the connection bolt of the segment. Fixed to the tunnel,
The supporting member includes two front and rear side arms connected to the two supporting beams arranged on the left and right sides, and the two side arms are connected in the extension direction of the tunnel, and the connecting position of the side arms is set to the side of the tunnel. It has two parallel vertical arms that can be adjusted in the transverse direction, and a lower bundle body that is supported by the vertical arms and that suspends the columns downward. The train line support device is supported by the columns of the lower bundle body. ,
The lateral arm of the support member has bolt insertion holes at both ends, and the bolt insertion holes are matched with a selected one of the bolt insertion holes of the support beam and coupled with bolts, respectively. A lower bundle device for supporting a train line in a tunnel, characterized in that the position in the transverse direction and the inclination angle with respect to the horizontal can be adjusted.

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