Construction method for concrete storage pipes

Abstract

To provide a construction method of a storage conduit capable of allowing a lid receiving member of the storage conduit to be mounted on a specific position of a concrete side wall when installing an anchor bolt in a concrete side surface as avoiding a buried reinforcement and thereby capable of securing a large storage space even in a narrow tunnel.SOLUTION: A construction method of a storage conduit comprises steps of: erecting side walls for a storage conduit with a space therebetween toward a tunnel center part from a tunnel side wall; forming a storage space between the erected side wall for the storage conduit and the tunnel side wall at an end part in a tunnel width direction; fixing a lid receiving member having a fitting hole formed as a long hole extending in a horizontal direction, into which an anchor bolt is inserted, and provided with a mounting surface on which a lid for the storage conduit is mounted on the upper surface, on the tunnel side wall at a generally same height as that of an upper end surface of the side wall for the storage conduit, to the tunnel side wall by inserting the anchor bolt into the fitting hole; and mounting the lid for the storage conduit crossing over the upper end surface of the side wall for the storage conduit and the mounting surface of the lid receiving member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a construction method for a storage pipeline constructed to store, for example, a group of communication cables laid near a railway track, and in particular to a construction method for a concrete storage pipeline constructed at the end of a tunnel in the width direction near a railway track inside a tunnel. [Background technology]

[0002] Concrete storage ducts must also be constructed near the railway tracks inside the tunnel to house the communication cables and other transmission cables. Here, the inner surface of the tunnel is finished in concrete, and when constructing the storage pipeline close to the end of the tunnel in the width direction, it was considered to use this tunnel side wall as the side wall of the storage pipeline.

[0003] However, the tunnel side walls are reinforced with embedded reinforcing bars made of steel bars and finished with concrete, and there was a possibility that the reinforcing bars would become an obstacle when driving anchor bolts into the concrete side walls to place the storage pipe cover holders. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-18038 Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been devised to solve the above-mentioned conventional problems, and aims to provide a construction method for storage pipelines that allows the lid receiving member of the storage pipeline to be attached to the specified position on the concrete side wall even when the anchor bolts are driven into the side of the concrete, avoiding the buried reinforcing bars, and ultimately ensures ample storage space even inside a narrow tunnel. [Means for solving the problem]

[0006] The present invention provides A construction method for a storage pipe constructed at the end of the tunnel width direction, storage pipeline side walls are erected at intervals from the tunnel side walls toward the tunnel center, a storage space is formed between the erected storage pipeline side walls and the tunnel side walls at the tunnel width direction ends, and a lid receiving member is attached to the tunnel side walls at a height position substantially equal to the upper end faces of the storage pipeline side walls, so that a storage pipeline lid can be placed across the upper end faces of the storage pipeline side walls and the placement surface of the lid receiving member, The lid receiving member has a linear, approximately polygonal rod shape, and has a flat lid placing surface on the upper surface and a flat tunnel side wall mounting surface formed from one end of the lid placing surface at a downward slope angle of approximately 90 degrees or less in accordance with the inclination angle of the tunnel side wall, and the side shape of the lid receiving member is configured to be approximately pentagonal by cutting the remaining two sides facing the lid placing surface and the tunnel side wall mounting surface at approximately the midpoint of the two sides so that the direction of the tunnel side wall mounting surface facing the tunnel side wall can be quickly detected, and the tunnel side wall mounting surface is provided with an elongated hole that extends approximately horizontally and is gently curved like a mountain so that an anchor bolt to be driven into the tunnel side wall can be inserted through it, allowing the insertion position of the anchor bolt to be moved horizontally and up and down, Reinforcement bars or buried obstacles arranged in the tunnel side walls To avoid Inserting anchor bolts General Position slotted hole The configuration can be changed within It is characterized by the fact that or A construction method for a storage pipe constructed at the end of the tunnel width direction, storage pipeline side walls are buried at intervals from the tunnel side walls toward the tunnel center, a storage space is formed between the buried storage pipeline side walls and the tunnel side walls at the tunnel width direction ends, and a lid receiving member is attached to the tunnel side walls at a height position substantially equal to the upper end faces of the storage pipeline side walls, so that a storage pipeline lid can be placed across the upper end faces of the storage pipeline side walls and the placing surface of the lid receiving member, The lid receiving member has a linear, approximately polygonal rod shape, and has a flat lid placing surface on the upper surface and a flat tunnel side wall mounting surface formed from one end side of the lid placing surface at a downward slope angle of approximately 90 degrees or less in accordance with the inclination angle of the tunnel side wall, and the side shape of the lid receiving member is configured to be approximately pentagonal by cutting the remaining two sides facing the lid placing surface and the tunnel side wall mounting surface at approximately the midpoint of the two sides so that the direction of the tunnel side wall mounting surface facing the tunnel side wall can be quickly detected, and the tunnel side wall mounting surface is provided with an elongated hole that extends approximately horizontally and is gently curved like a mountain so that an anchor bolt to be driven into the tunnel side wall can be inserted, and the driving position of the anchor bolt can be moved horizontally and up and down, Reinforcement bars or buried obstacles arranged in the tunnel side walls To avoid Inserting anchor bolts General Position slotted hole The configuration can be changed within It is characterized by two tails. [Effects of the Invention]

[0007] According to the present invention, when anchor bolts for fixing the lid receiving member on which the storage pipeline lid is placed to the tunnel side wall are driven into the concrete side, the lid receiving member of the storage pipeline can be attached to the specified position on the concrete side wall even if the anchor bolts are driven while avoiding the reinforcing bars embedded in the side wall, and therefore it is possible to provide an excellent effect of providing a construction method for storage pipelines that can ensure ample storage space even in a narrow tunnel. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram illustrating the configuration of a first embodiment according to the present invention. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] FIG. 10 is an explanatory diagram illustrating the configuration of a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present invention will now be described with reference to the accompanying drawings. FIG. 1 shows a first embodiment, and is an explanatory diagram illustrating the construction of a concrete storage pipe 2 for storing cables 4 and the like inside a tunnel 1 on both sides of the tunnel 1 in the width direction.

[0010] In the embodiment shown in Figure 1, two lanes of railway tracks 3 are provided inside the tunnel 1. Cables 4, such as communication cables and power cables for the railway vehicles, are stored in concrete storage pipes 2 provided on both ends of the tunnel 1 in the width direction.

[0011] Here, the storage pipeline 2 for railways is made of concrete rather than metal in order to shield against electromagnetic waves, etc. If a metal storage pipeline is used, it will not be able to shield electromagnetic waves, and the electromagnetic waves will have an adverse effect on the cables 4, such as communication cables and power cables for railway vehicles, which may result in problems such as communication failures.

[0012] However, it is not possible to increase the width of the tunnel 1. That is, the tunnel 1 has two side walls 5 in the width direction, which determine the length of the tunnel in the width direction, and the length of the tunnel in the width direction cannot be increased beyond the distance between the two side walls 5.

[0013] Therefore, particularly when constructing storage conduit 2 for storing cables 4 and the like inside tunnel 1 at the end of tunnel 1 in the width direction, rather than erecting a separate storage conduit side wall on the tunnel side wall that constitutes storage conduit 2, constructing it using tunnel side wall 5 as the storage conduit side wall on one side will maximize the length in the width direction of tunnel 1. Moreover, there is no need to construct a separate side wall for constructing storage conduit 2.

[0014] In this way, by using the tunnel side wall 5 as a side wall of one of the storage pipelines, the storage space for the storage pipelines 2 can be used to the maximum extent possible within the tunnel 1, as described above, and there is no need to construct a new side wall for the storage pipelines 2.

[0015] Here, the construction method for the storage pipeline 2 will be explained. First, the storage pipeline side walls 6 of the storage pipeline 2 are erected at a predetermined interval from the tunnel side walls 5 on both ends in the tunnel width direction toward the center of the tunnel. The storage pipeline side wall 6 is made of a plate-like member made of concrete with a predetermined thickness, and is erected approximately vertically so as to be approximately parallel to the opposing tunnel side wall 5 with a predetermined gap between them.

[0016] After erecting the storage pipeline side wall 6, a lid receiving member 9 is attached to the opposing tunnel side wall 5 using anchor bolts 7 at a height position approximately the same as the height of the upper end face of the storage pipeline side wall 6. As described above, the anchor bolts 7 are used to attach the lid receiving member 9 that holds the storage pipeline lid 8 to the tunnel side wall 5 in order to place the storage pipeline lid 8 between the upper end surface of the storage pipeline side wall 6 and the tunnel side wall 5 that is at the same height as the upper end surface. That is, the anchor bolt 7 is inserted through the mounting hole 12 of the lid receiving member 9 and is used to fix the lid receiving member 9 to the tunnel side wall 5.

[0017] Next, the lid receiving member 9 will be described. Figure 2 is a front view of the lid receiving member 9, and Figure 3 is a side view. As can be seen from Figure 2, the lid receiving member 9 is configured in the shape of a linear, approximately polygonal rod, and as can be seen from Figure 3, it is configured to have a lid placing surface 10 with a flat upper surface, and a tunnel side wall mounting surface 11 formed at a downward slope angle of approximately 90 degrees or less from one end side of the lid placing portion 10 and with a flat surface on the surface.

[0018] Here, the tunnel sidewall mounting surface 11 is formed with a downward slope angle of 90 degrees or less from one end side of the lid mounting portion 10 to match the inclination angle of the tunnel sidewall 5 and is designed so that the lid mounting surface 10 can be positioned in a substantially horizontal direction. Also, Figure 3 shows the side of the lid receiving member 9, and as shown in Figure 3, the end faces of the side are not formed in a rectangular shape but in a polygonal shape. In other words, the remaining two sides facing the lid mounting surface 10 and the tunnel sidewall mounting surface 11 are cut off at approximately their midpoints to form a substantially pentagonal shape.

[0019] This is because, when attaching the lid receiving member 9 to the tunnel side wall 5, it is possible to quickly determine the direction of the tunnel side wall mounting surface 11 that faces the tunnel side wall 5. In other words, if the side shape of this lid receiving member 9 is not a substantially square shape, but the remaining two sides that face the lid placing surface 10 and the tunnel side wall mounting surface 11 are cut out from approximately the midpoint of those two sides to form a substantially pentagonal shape, it is possible to easily confirm the direction of the tunnel side wall mounting surface 11 that faces the tunnel side wall 5.

[0020] Furthermore, this lid receiving member 9 is also formed from a concrete product, and if the corner opposite the corner formed by the lid placing surface 10 and the tunnel side wall mounting surface 11 is cut out in an approximately triangular shape, the material cost can be reduced by the amount of the cutout.

[0021] Next, as shown in Figure 2, a mounting hole 12 through which an anchor bolt 7 is inserted is provided on the cut-out surface of the corner. Here, as shown in Figure 2, the mounting hole 12 is configured as an elongated hole that extends substantially horizontally and has a gently curved mountain-like shape. As mentioned above, the tunnel side walls 5 are formed by pouring concrete into the natural ground, and reinforcing bars are buried inside to reinforce the tunnel side walls 5. In addition, rocks of various sizes and shapes are also present in the natural ground.

[0022] Therefore, in some cases, reinforcing bars may be buried where the anchor bolt 7 is to be driven. Also, rocks may be present. In such cases, if the elongated hole is made to have a gently curved mountain shape, the driving position of the anchor bolt 7 can be moved horizontally and also vertically. In other words, the anchor bolt 7 can be driven while avoiding buried reinforcing bars and rocks. This is why the mounting hole 12 is made to extend substantially horizontally and has a gently curved mountain shape.

[0023] The length of the mounting hole 12 in the approximately horizontal direction must be at least equal to or greater than the sum of the diameter of the reinforcing bar and the diameter of the anchor bolt 7. If the length is set to this value, the anchor bolt 7 can be driven in while avoiding the reinforcing bar.

[0024] Incidentally, the reinforcing bars are arranged, for example, vertically and horizontally in a grid pattern, but there is a risk that they may come into contact with the reinforcing bars arranged horizontally. In this case, since the mounting holes 12 are elongated holes with a gently curved mountain shape, they can be adjusted slightly in the vertical direction as mentioned above, but if slight adjustment is not enough, it is necessary to adjust the height of the storage pipe side wall 6 itself in advance and select a location that will not come into contact with the horizontal reinforcing bars or rocks.

[0025] As described above, within the tunnel 1, the storage pipe side walls 6 are erected along the entire length of the tunnel in the direction of travel, anchor bolts 7 are driven into the opposing tunnel side walls 5 at predetermined positions, and the anchor bolts 7 are adjusted to fit into the mounting holes 12, which are elongated holes with a gently curved mountain shape and through which the anchor bolts 7 are inserted, and the lid receiving members 9 are attached to the tunnel side walls 5 at predetermined positions.

[0026] Then, cables 4 such as communication cables and power cables are stored inside the storage pipeline 2 in the completed tunnel 1, and the storage pipeline cover 8 is placed on the cover receiving member 9 attached as described above. This completes the construction of the storage pipeline 2 in the tunnel 1.

[0027] Next, a second embodiment will be described with reference to FIG. In the first embodiment, a construction method for a storage pipeline that is erected and constructed on the ground within a tunnel 1 is described, whereas in the second embodiment, an example is shown in which a storage pipeline is constructed below the ground level.

[0028] According to this embodiment, it is possible to construct buried storage pipes 2 on both sides of the width of the tunnel 1, thereby creating an empty space above the storage pipes 2. Therefore, this empty space above can be effectively used for some purpose.

[0029] It should be noted that the application of the second embodiment is suitable for tunnels 1 that are formed with a relatively low height. The construction method of the second embodiment will be briefly explained. From the tunnel side wall 5 toward the center of the tunnel 1, storage pipe side walls 6 are buried in the ground at intervals.

[0030] Then, an underground storage space is formed by excavating between the buried storage pipeline side wall 6 and the tunnel side wall 5 at the end of the tunnel width direction.

[0031] Next, a lid receiving member 9 having a mounting hole 12 formed as an elongated hole extending horizontally through which an anchor bolt 7 is inserted, and having a mounting surface 10 on its upper surface on which a storage pipeline lid 8 is placed, is attached to the tunnel side wall 5 by inserting the anchor bolt 7 into the mounting hole 12.

[0032] Thereafter, the storage pipeline lid 8 is placed across the upper end surface of the storage pipeline side wall 5 and the placement surface 10 of the lid receiving member 9, thereby completing the construction of the storage pipeline 2 of the second embodiment.

[0033] Here, the attachment of the lid receiving member 9 to the tunnel side wall 5 using the anchor bolt 7 is configured so that the insertion position of the anchor bolt 7 can be changed within the attachment hole 12 so that the attachment can be made while avoiding reinforcing bars or obstacles arranged within the tunnel side wall 5.This means that the lid receiving member 9 can be attached to the specified position without being hindered by obstacles such as reinforcing bars or rocks buried within the tunnel side wall 5, and a reliable storage pipeline 2 can be constructed with quick work.

[0034] The construction method for constructing a storage pipeline 2 inside a tunnel 1 has been explained above, but the cover receiving member 6 of the present invention can be used not only inside a tunnel 1 but also in constructing a storage pipeline on an ordinary railway road without a tunnel, and is highly effective in constructing a storage pipeline 2 outside a tunnel. [Explanation of symbols]

[0035] 1. Tunnel 2 Storage pipeline 3. Railway Tracks 4 Cables 5 Tunnel sidewall 6 Storage pipe side wall 7 anchor bolts 8 Storage pipe cover 9 Lid holder 10 Lid placement surface 11 Tunnel side wall mounting surface 12 mounting holes

Claims

1. A construction method for a storage pipe constructed at the end of the tunnel in the width direction, storage pipeline side walls are erected at intervals from the tunnel side walls toward the tunnel center, a storage space is formed between the erected storage pipeline side walls and the tunnel side walls at the tunnel width direction ends, and a lid receiving member is attached to the tunnel side walls at a height position substantially equal to the upper end faces of the storage pipeline side walls, so that a storage pipeline lid can be placed across the upper end faces of the storage pipeline side walls and the placement surface of the lid receiving member, The lid receiving member has a linear, approximately polygonal rod shape and includes a flat lid placing surface on the upper surface and a flat tunnel side wall mounting surface formed from one end of the lid placing surface at a downward slope angle of approximately 90 degrees or less in accordance with the inclination angle of the tunnel side wall. The side shape of the lid receiving member is configured to be approximately pentagonal by cutting the remaining two sides facing the lid placing surface and the tunnel side wall mounting surface at approximately the midpoint of the two sides so that the direction of the tunnel side wall mounting surface facing the tunnel side wall can be quickly detected. The tunnel side wall mounting surface is provided with an elongated hole that extends approximately horizontally and is curved gently like a mountain so that an anchor bolt to be driven into the tunnel side wall can be inserted therethrough, allowing the insertion position of the anchor bolt to be moved horizontally and up and down, and the insertion position of the anchor bolt can be changed within the elongated hole to avoid reinforcing bars arranged in the tunnel side wall or buried obstacles. A construction method for storage pipelines characterized by the above.

2. A construction method for a storage pipe constructed at the end of the tunnel in the width direction, storage pipeline side walls are buried at intervals from the tunnel side walls toward the tunnel center, a storage space is formed between the buried storage pipeline side walls and the tunnel side walls at the tunnel width direction ends, and a lid receiving member is attached to the tunnel side walls at a height position substantially equal to the upper end faces of the storage pipeline side walls, so that a storage pipeline lid can be placed across the upper end faces of the storage pipeline side walls and the placing surface of the lid receiving member, The lid receiving member has a linear, approximately polygonal rod shape and includes a flat lid placing surface on the upper surface and a flat tunnel side wall mounting surface formed from one end of the lid placing surface at a downward slope angle of approximately 90 degrees or less in accordance with the inclination angle of the tunnel side wall. The side shape of the lid receiving member is configured to be approximately pentagonal by cutting the remaining two sides facing the lid placing surface and the tunnel side wall mounting surface at approximately the midpoint of the two sides so that the direction of the tunnel side wall mounting surface facing the tunnel side wall can be quickly detected. The tunnel side wall mounting surface is provided with an elongated hole that extends approximately horizontally and is curved gently like a mountain so that an anchor bolt to be driven into the tunnel side wall can be inserted through it, allowing the driving position of the anchor bolt to be moved horizontally and up and down, and the insertion position of the anchor bolt can be changed within the elongated hole to avoid reinforcing bars arranged in the tunnel side wall or buried obstacles. A construction method for storage pipelines characterized by the above.

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