JP3099282B2 - Reinforcement structure for cable laying roads such as trenches and canals - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable laying path, such as a groove or a cave, for reinforcing the cable laying path.
The present invention relates to a reinforcing structure for a cable laying path such as a cave.

[0002]

2. Description of the Related Art Generally, in an urban area, cables used for communication, power transmission, and the like are arranged on cable laying paths such as trenches and caves. As shown in FIG. 3, an inner peripheral wall 1 made of reinforced concrete is constructed on an inner periphery of the cable laying path, and a cable laying facility 2 is arranged on the inner peripheral wall 1. In this cable laying facility 2, a plurality of uprights 3 extending in the inner circumferential direction of the inner peripheral wall 1 are arranged in parallel along the extending direction of a cave or the like, and a receiving object 4 is attached to the uprights 3. A plurality of cables 5 are placed on the receiving object 4. When the inner peripheral wall 1 of the groove, the cave, etc. is deteriorated due to aging, the existing inner peripheral wall 1 is demolished,
Reinforced concrete is built in trenches, tunnels, etc., and the inner peripheral wall 1 is newly constructed.

[0003]

However, when a new inner peripheral wall 1 is to be installed in a ditch, a cave, or the like, digging work is required, and the ditch or cave is buried under an important arterial road. When there is, it is necessary to perform excavation work from the main road. For this reason, it is necessary to stop traveling on the main road on which the vehicle travels, and the traveling of the main road user is stopped.
Therefore, a reinforcement structure for reinforcing the inner peripheral wall 1 such as an existing groove or a cave has been proposed. In such a reinforcing structure, since the inner peripheral wall 1 such as an existing ditch or a cave is reinforced, digging work is unnecessary, and it is widely expected for an important arterial road.

However, when reinforcing the existing inner peripheral wall 1, a reinforced concrete reinforcing body is constructed inside the existing inner peripheral wall 1, and the upright 3 is provided inside the reinforcing body.
Are mounted side by side, and a receiving object 4 is attached to the uprights 3, and a cable 5 is placed on the receiving object 4. For this reason, the cross-sectional area of the existing inner peripheral wall 1 is reduced by the reinforcing member, and the hollow cross-sectional area of the reinforcing member is further reduced by the metal fitting 4.
When it is difficult to store the cable 5 in the metal fittings 4, it is difficult to secure a check passage for the cable 5 in an existing groove, a cave, or the like, and it is not possible to construct a reinforcing body in the existing cave or the like. There is.

[0005] The present invention effectively solves the above-mentioned problems, and provides a reinforcing structure for reinforcing an existing cave, etc., without restricting the use of a main road, etc., and for storing and inspecting cables. An object of the present invention is to provide a reinforcing structure for a cable laying path such as a groove or a cave where a possible space is secured.

[0006]

SUMMARY OF THE INVENTION According to the present invention, there is provided a reinforcing structure for a cable laying path such as a groove, a cave, or the like.
A cable laying path reinforcing structure for reinforcing a cable laying path for a cable laying path such as a cave, and a reinforcing body for reinforcing an inner peripheral surface of the cable laying path, and attached to the reinforcing body, And a metal support for supporting the cable, wherein the reinforcing member is a precast concrete.
Link segments along the length of the cable path
The standing metal is provided on the inner peripheral side of the end face of the segment.
The notch for fitting the object is cut out of the box and formed.
And the upright is fitted into the notch .

[0007]

According to the present invention, the present invention is applicable to a cable laying path such as an existing cave.
Reinforcement made of precast concrete segments
Assemble the body and use the reinforcing body to
A reinforcing effect is obtained by covering the inner surface. And the cable
Fit the support upright into the notch formed in the reinforcement
The fittings protrude inside the cable laying path
And secure a large internal effective space. Standing
Notch for fitting metal is inside the end face of segment
Formed on the circumferential side, that is, on the inner circumferential side of the connection with other segments
That the notch is provided
The strength of the metal does not decrease. Also linked to each other
Notches are formed on the inner peripheral sides of both end faces of
And cut them out by connecting segments
The parts are naturally joined together and a single fitting is fitted.
By having a notch of size formed,
Cutouts formed in individual segments are halved in size
And the segmental loss of the segment can be reduced. In addition,
Notches do not have to be provided in all segments.
Depending on the width of the segment and the spacing between
For example, every other or every third
Only to be provided for the fuel.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a reinforcing structure for a cable laying path such as a groove or a cave according to the present invention will be described below with reference to FIGS. Here, the same reference numerals are used for the same components as those in the conventional example, and the description is simplified. As shown in FIG. 1, reference numeral 10 denotes a reinforcing structure of a cable laying path such as a groove or a cave, and the reinforcing structure 10 of the cable laying path targets a cable laying path 12 on which the cable 5 is laid.
An existing inner peripheral wall 1 constructed on the inner peripheral surface of the cable laying path 12 and an inner peripheral wall 1 constructed on the inner side of the inner peripheral wall 1.
And a reinforcing member 3 attached to the reinforcing member 15 and supporting the cable 5. A filler 17 such as a grout for fixing the reinforcing member 15 to the existing inner peripheral wall 1 is filled between the existing inner peripheral wall 1 and the reinforcing member 15, and a drainage member 16 is embedded in the filling member 17. ing.

The reinforcing member 15 is formed by connecting a plurality of precast reinforced concrete segments 20 and is disposed on the existing inner peripheral wall 1 along the extending direction of the cable laying path 12. As shown in FIG. 2, the segment 20 is formed in a hollow shape opened in the extending direction of the cable laying path 12, and has a top plate 21 having both ends bent downward, and both ends of the top plate 21. Two side plates 22 respectively fixed to the part
And a bottom plate 23 fixed to these side plates 22 and having both ends bent upward.

The top plate 21, side plate 22, and bottom plate 23 are
Each is fixed by a fastening member 24 such as a bolt. Each of the segments 20 passes through the connecting steel bar 25 between the top plates 21 and the bottom plates 23, and the adjacent segments 20 are connected by the connecting steel bars 25. Here, the bottom plate 23
A drain groove 26 is formed on the upper surface of the.

The segment 20 has one open end face,
A notch 27 is formed on the inner peripheral surface side. The cutout portion 27 is formed by bisecting a concave portion formed in a trapezoidal shape in cross section, and is arranged to face the cutout portion 27 of each adjacent segment 20, and the side plate 22, the top plate 21, and the bottom plate 23 of the segment 20. Are formed at both bent end portions. The cutout portion 27 is formed to have substantially the same outer shape as the box provided on the mold of the segment 20. That is, concrete is poured into the formwork of the segment 20, and when the formwork is removed, the box is pulled out, so that the notch 2
7 is formed. The so-called opposing notch 27 is cut out of the inner peripheral surface of the segment 20 along the circumferential direction. The cutout portions 27 are formed at two places of the three segments 20, that is, one place of the three segments 20 is hollowed out.

The metal fitting 3 is formed of a rod-like structure such as an angle frame, and is fitted into the adjacent notch 27, that is, is fitted into the boxed portion of the segment 20, and is provided side by side along the cable laying path 12. Have been. The metal fittings 4 are attached to the upper and lower parts of the metal fittings 3. A plurality of cables 5 are placed on the receiving object 4.

[0013] Reinforcing structure 1 for cable laying roads such as grooves, caves, etc.
At 0, the cable 5 is detached from the receiving object 4, and the standing object 3 is detached from the existing inner peripheral wall 1 together with the receiving object 4.
On the other hand, the top plate 2 of the segment 20 constructed in advance
1. Insert the side plate 22 and the bottom plate 23 into the cable laying path 12. Then, the segments 20 are assembled along the cable laying path 12 by assembling the segments 20 with the fastening members 24 and penetrating the connecting steel bars 25 through the respective segments 20. The reinforcing body 15 is constructed by fixing the segments 20 to the existing inner peripheral wall 1 with the filler 17. Thereafter, the metal fittings 3 are fitted into the opposed notches 27 (portions from which the boxes are removed) of the segments 20, the metal fittings 4 are attached to the metal fittings 3, and the cables 5 are placed on the metal fittings 4.

According to the reinforcing structure 10 for a cable laying path such as a groove or a cave, the cable laying path 12 is reinforced for the cable laying path 12 on which the cable 5 is laid. Since it has a reinforcing member 15 composed of a plurality of segments 20 for reinforcing the inner peripheral surface of the laying path 12 and the metal fittings 3 attached to the reinforcing member 15 and supporting the cable 5, a plurality of reinforcing members 15 are provided on the existing inner peripheral wall 1. By arranging the segment 20, the existing inner peripheral wall 1 can be reinforced by the reinforcing body 15, and the cable 5 can be supported by the metal fittings 3 arranged in the cable laying path 12. For this reason, the existing inner peripheral wall 1 can be demolished and the new installation work of the inner peripheral wall 1 can be made unnecessary, and the excavation work from the main road can be made unnecessary. Therefore, the existing cable laying path is not restricted without restricting the use of the main road. 12 can be reinforced, and the workability of reinforcing the cable laying path 12 can be improved.

In the segment 20 of the reinforcing member 15, a notch 27 is formed at one end face of the opening along the circumferential direction, and the reinforcing member 15 is removed from the box by disposing the notches 27 to face each other. The cut-out portion, that is, the cut-out portion 27 facing the cut-out portion 27 is fitted with the metal fitting 3, so that the cross-sectional area of the existing inner peripheral wall 1 is
Even when the reinforcing member 15 is narrowed, it is possible to prevent the hollow sectional area of the reinforcing member 15 from being further narrowed by the metal fittings 3. For this reason, it is possible to prevent the workability of storing the cable 5 in the metal fitting 3 from being lowered, and to secure the hollow cross-sectional area of each segment 20, so that the existing cable laying path 12 has an inspection passage for the cable 5. Thus, the reinforcing member 15 can be constructed on the existing cable laying path 12.

Notches for fitting the metal fittings 3
The portion 27 is located on the inner peripheral side of the end face of the segment 20, that is, another segment.
Since it is formed on the inner peripheral surface side of the connection portion with the
Even if the notch 27 is provided, the strength of the segment 20 can be improved.
It does not decline. Notch 27 not on end face
Forming in the middle part of the ment 20 is due to a cross-sectional defect.
It is preferable because the strength of the segment 20 is inevitably reduced.
Absent. Further, the cells connected to each other as in the above-described embodiment.
Notches 27 on the inner peripheral sides of both end faces of the
Is formed, and the segments 20 are connected to each other.
And one notch 27 is joined together by itself
Notch of a size to fit the metal fitting 3 is formed
By doing so, the individual segments 20 can be shaped
The notch 27 formed is half the cross-sectional dimension of the metal fitting 3.
Therefore, the seg by providing the notch 27
The cross-sectional defect of the ment 20 can be small. The above implementation
An example is one for the length connecting three segments 20
Since this is an example of the case where the metal fittings 3 are provided, three segments are used.
Notches 27 for two segments of
The notch 27 is the width dimension of the segment 20
Necessary segments 20 according to the law and the installation interval of the metal fittings 3
Should be provided for

[0017]

[0018]

As described above, according to the reinforcing structure for a cable laying path such as a groove or a cave of the present invention, the cable is laid on a cable laying path such as a groove or a cave where a cable is laid. The existing cable is constructed by reinforcing a laying path and having a reinforcing body for reinforcing the inner peripheral surface of the cable laying path, and a metal fitting attached to the reinforcing body and supporting the cable. The laying path can be reinforced, and the cable can be supported by the metal fittings in the cable laying path. For this reason, it is not necessary to demolish the existing inner peripheral wall and rebuild the inner peripheral wall, and even in an urban area where important arterial roads are located, it is not necessary to dig up the arterial roads. The existing cable laying path can be reinforced without restricting the use and the like, and the workability of reinforcing the cable laying path can be improved.

In particular, the present invention relates to a cable for an existing cave or the like.
Precast concrete segments in the laid road
Of the existing cable
Excellent reinforcement due to the structure that covers the inner surface of the road
Not only is the effect obtained, but also
A metal fitting is fitted into the notch formed in the reinforcement.
The metal fittings protrude inside the cable laying path.
And secure a large internal effective space.
it can. The notch for fitting the metal fittings is
On the inner peripheral side of the end face of the segment, that is, the connection with other segments
Since it was formed on the inner peripheral surface side of such a notch,
Does not reduce the strength of the segments and
Notches on the inner peripheral side of both end faces of the segments to be connected
Form a part, fit them together and fit one stand
The notches are large enough to fit
Cutouts are small, and cross-sectional defects are small.
Can be frustrated.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a reinforcing structure of a cable laying path such as a groove or a cave according to the present invention.

FIG. 2 is an exploded perspective view showing the reinforcing member of FIG.

FIG. 3 is a sectional view showing a conventional cable laying path.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 3 Stand metal 5 Cable 10 Reinforcement structure of cable laying path such as groove, cave, etc. 12 Cable laying path 15 Reinforcement body 20 Segment 27 Notch

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-5-272295 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11/04 E21D 11/08 E21F 17 / 02 H02G 1/06 309 H02G 9/04-9/10

Claims (1)

(57) [Claims] A cable laying path reinforcing structure for reinforcing a cable laying path for a cable laying path such as a groove or a cave where a cable is laid, wherein the inner peripheral surface of the cable laying path is reinforced. And a stiffener attached to the reinforcement and supporting the cable, wherein the reinforcement is a precast concrete segment.
Components along the length of the cable path.
And the metal fitting is fitted on the inner peripheral side of the end face of the segment.
A notch for adjusting the shape is formed by cutting out a box, and the notch is
The reinforcing structure for a cable laying path such as a groove or a cave , wherein the metal fitting is fitted to the cable.