JP5836588B2 - Co-grooving method for side grooves - Google Patents

Description

  The present invention relates to a side groove joint groove construction method for adding a function as an electric wire joint groove capable of collectively storing cables to a plurality of existing side grooves used for drainage.

By burying various cables such as distribution lines, telephone lines and optical fibers in the ground, securing emergency transport roads in the event of a disaster, smooth firefighting activities, creating a strong city in times of disaster such as typhoons and earthquakes, and advanced information For example, it is possible to stably supply power to the mobile phone and improve communication reliability.
Therefore, especially in urban areas, in order to form a functional road space and realize a beautiful cityscape, the cables are stored together in a common cable groove (C, C, BOX) embedded in the sidewalk. It is being promoted to make it non-electric pole.

The electric wire common groove is preferably installed along the public-private boundary portion of the sidewalk in order to shorten the cable drawing distance to the house as much as possible.
However, there are many side gutter blocks that allow rainwater from roads and houses to flow into the sewage at the public-private boundary of the sidewalk. May overlap.

Accordingly, a side groove block having both a function as a common wire groove for storing cables together and a function as a side groove for drainage (hereinafter sometimes referred to as “hybrid side groove block”) has been proposed. Yes.
Conventionally, there are two types of this hybrid-type side groove block. Of these, the first type includes a block main body having a substantially U-shaped cross-section with the upper part opened and a lid member that closes the upper opening part, and penetrates the side wall of the block main body in the longitudinal direction. Cables are accommodated in the through holes (see Patent Documents 1 and 2).

  The second type includes a block body having a substantially U-shaped cross-section with the upper part opened and a lid member that closes the upper opening part, and holds cables on the inner surface of the side wall part of the block body. In addition to projecting members, a drainage channel for sewage is formed at the bottom of the block body (see Patent Document 3).

JP 2003-147846 A JP 2008-215053 A Japanese Patent No. 2523083

  Among the conventional hybrid-type side groove blocks, in the first type, the cables are housed in the through holes that penetrate the side wall of the block main body in the longitudinal direction, so that the through holes are formed in the ground. If the special gutter block formed is not used, the cables cannot be underground.

On the other hand, since the second type has a structure in which cables are held by a holding member protruding from the inner surface of the side wall of the block main body, the holding member is driven on the side wall surface of the existing block main body. For example, there is a possibility that cables can be underground by using a gutter block already used for drainage.
However, in the second type, the holding member protrudes from the inner surface of the side wall, and the drainage channel of the sewage is formed at the bottom of the block body. There is a drawback that it is difficult for a cleaning tool to enter the bottom of the main body, and it is difficult to perform maintenance such as cleaning for removing sludge.

  In view of the conventional problems as described above, the present invention is capable of forming existing side grooves used for drainage as common grooves without complicating maintenance work on the drainage channel after construction. Objective.

(1) The first aspect of the present invention is a joint groove forming method for an existing side groove used for drainage, and includes the following steps (a1) to (c1).
(A1) A step of attaching a supporting member to a vertically middle portion of the left and right side surfaces in the side groove (b1) A step of storing the cables in the bottom portion of the side groove while leaving a storage space for cables to be added in the future. c1) A step of forming a new drainage channel in the upper part of the side groove by placing a bottom plate member that fits in the side groove on the support member

According to the first aspect of the present invention, the cables are housed in the bottom portion in the existing side groove, and the bottom plate member is placed on the support member attached to the middle part in the vertical direction of the left and right side surfaces in the side groove. Since a new drainage channel is formed on the upper part of the wall, the existing side groove can be formed into a common groove.
In addition, since the inner empty section in the side groove after construction is the drainage channel on the upper side and the storage space for cables etc. on the lower side, there is nothing to obstruct when cleaning the drainage channel. Maintenance work becomes easy.

(2) The second aspect of the present invention is a joint groove forming method for a plurality of existing side grooves used for drainage, and includes the following steps (a2) to (c2).
(A2) A step of attaching a supporting member to a vertically middle portion of both left and right side surfaces in the side groove (b2) A step of storing the cables in the bottom portion in the side groove while leaving a storage space for cables to be added in the future. c2) A step of forming a new drainage channel at the upper part in the side groove by placing an upper opening water channel member on the support member

According to the second aspect of the present invention, cables are housed in the bottom portion in the existing side groove, and the water channel member having an upper opening is placed on the support member attached to the middle in the vertical direction on both the left and right side surfaces in the side groove. By this, since a new drainage channel is formed in the upper part in a side groove, the existing side groove can be made into a common groove.
In addition, since the inner empty section in the side groove after construction is the drainage channel on the upper side and the storage space for cables etc. on the lower side, there is nothing to obstruct when cleaning the drainage channel. Maintenance work becomes easy.

(3) The third aspect of the present invention is a joint groove forming method for existing side grooves used for drainage, and includes the following steps (a3) to (b3).
(A3) A step of storing cables in the bottom of the side groove while leaving a storage space for cables to be added in the future. (B3) The hook portion of the water channel member having a hook portion in the upper opening is the side groove. The process of forming a new drainage channel in the upper part in the side groove by hanging on the upper end of

According to the third aspect of the present invention, the cables are housed in the bottom portion in the existing side groove, and the hook portion of the water channel member is hooked on the upper end portion of the side groove, so that a new drainage channel is formed in the upper portion in the side groove. Therefore, the existing side groove can be formed into a common groove.
In addition, since the inner empty section in the side groove after construction is the drainage channel on the upper side and the storage space for cables etc. on the lower side, there is nothing to obstruct when cleaning the drainage channel. Maintenance work becomes easy.

(4) A fourth aspect of the present invention is a joint groove forming method for an existing side groove used for drainage, and includes the following steps (a4) to (b4).
(A4) A step of storing cables in the bottom of the side groove while leaving a storage space for cables to be added in the future. (B4) A cover member having a downward opening is stored in the side groove to cover the cables. To form a new drainage channel in the upper part of the gutter

According to the fourth aspect of the present invention, the cables are stored in the bottom of the existing side groove, and the cover member having the lower opening is stored in the side groove, thereby forming a new drainage channel in the upper part of the side groove. Therefore, the existing side groove can be formed into a common groove.
In addition, since the inner empty section in the side groove after construction is the drainage channel on the upper side and the storage space for cables etc. on the lower side, there is nothing to obstruct when cleaning the drainage channel. Maintenance work becomes easy.

(5) The fifth aspect of the present invention is a joint groove forming method for a plurality of existing side grooves used for drainage, and includes the following step (a5).
(A5) By installing a cable box capable of storing cables inside the cross-section while leaving a storage space for cables to be added in the future at the bottom in the side groove, a new drainage channel is provided at the top in the side groove. Forming process

According to the fifth aspect of the present invention, a new drainage channel is formed in the upper part of the side groove by installing a cable box capable of storing cables inside the cross section at the bottom of the existing side groove. Side grooves can be made into co-grooves.
In addition, since the inner cross section in the side groove after construction is a drainage channel on the upper side and a cable box on the lower side, there is nothing to obstruct when cleaning the drainage channel, and maintenance work such as cleaning the drainage channel is not necessary It becomes easy.

(6) A sixth aspect of the present invention is a joint groove forming method for an existing side groove used for drainage, and includes the following step (a6).
(A6) an upper opening of the groove, closed by a lid member having a retractable housing space the cables to the inside cross section while leaving the storage space of the cable to be added in the future step

According to the sixth aspect of the present invention, the upper side opening of the existing side groove is closed with a lid member having a storage space capable of storing cables inside the cross section. can do.
In addition, since the storage space for the cables is provided in the lid member, there is no obstacle when removing the lid member and cleaning the drainage channel in the side groove, and maintenance work such as cleaning the drainage channel is easy. Become.

(7) By the way, after the construction of the joint groove forming method of the first to fifth aspects of the present invention, a drainage channel is formed in the upper cross section of the inner cross section of the side groove, and a storage space is formed in the lower section. Will be.
As a layout when connecting a drainage basin or cable culvert to a side groove section where the cross section of the upper and lower two-stage structure continues, for example, the basin basin is arranged on the extension of the side groove section and the cable basin is offset to the center of the road in the side groove section It is possible to arrange them.

However, in the above layout, it is necessary to lay the cables around the outside of the side groove in the section where the water collecting basin and the cable basin are installed. In this case, the cable laying operation becomes complicated in that the side grooves must be drilled.
Therefore, in the joint grooving method of the present invention, it is preferable to further include the following steps (x) to (y) when the construction of a water collecting tank for collecting the drainage of the side groove is included.

(X) A change block having an upper space that changes the drainage direction of the drainage channel toward the center of the road and a lower space that allows the cables housed in the side groove to pass through without being bent. (Y) A step of installing a catchment for collecting drainage from the upper space at a position offset to the center side of the road in the gutter space.

According to the above-mentioned joint groove construction method, the drainage basin for collecting drainage from the upper space of the changed block is installed at a position offset to the center of the road in the side groove section at the removed location, so the storage space for the side groove Will not be divided by the catchment.
For this reason, it is not necessary to bypass the cables to the outside of the side groove in the installation section of the catchment basin, and the installation work of the cables becomes easy.

In addition, in the joint grooving method of the present invention, when including the construction of a cable rod that receives cables from the side grooves, the following step (instead of the step (y) or in addition to the step (y), Preferably, z) is further included.
(Z) A step of installing a cable rod communicating with the lower space so as to be positioned on an extension of the side groove section in an empty section by removing the existing side groove.

According to the above-mentioned joint groove construction method, since the cable rod communicating with the lower space of the change block is installed on the extension of the side groove section at the removed location, the cables in the side groove are bent through the lower space of the change block. It can be extended to the cable cage without doing so.
For this reason, it is not necessary to detour the cables to the outside of the side groove in the installation section of the cable rod, and the installation work of the cables becomes easy.

  As described above, according to the joint groove forming method of the present invention, the existing side groove used for drainage can be formed into a common groove without complicating maintenance work for the drainage channel after construction.

It is explanatory drawing which shows the construction procedure of the common groove forming method (1st method) which concerns on 1st Embodiment. It is sectional drawing which shows the variation of the side groove | channel cross section in which a 1st construction method is possible. It is explanatory drawing which shows the construction procedure of the joint groove formation method (2nd construction method) which concerns on 2nd Embodiment. It is sectional drawing which shows the variation of the side groove | channel cross section in which a 2nd construction method is possible. It is explanatory drawing which shows the construction procedure of the joint groove formation method (3rd construction method) which concerns on 3rd Embodiment. It is sectional drawing which shows the variation of the side groove | channel cross section in which a 3rd construction method is possible. It is explanatory drawing which shows the construction procedure of the common groove forming method (4th method) which concerns on 4th Embodiment. It is sectional drawing which shows the variation of the side groove cross section in which a 4th construction method is possible. It is explanatory drawing which shows the construction procedure of the common groove forming method (5th method) which concerns on 5th Embodiment. It is sectional drawing which shows the variation of the side groove cross section in which a 5th construction method is possible. It is explanatory drawing which shows the construction procedure of the joint groove forming method (modified example of a 5th method) which concerns on the modified example of 5th Embodiment. It is sectional drawing which shows the variation of the side groove | channel cross section in which the modification of a 5th construction method is possible. It is explanatory drawing which shows the construction procedure of the common groove forming method (6th method) which concerns on 6th Embodiment. It is sectional drawing which shows the variation of the side groove | channel cross section in which a 6th construction method is possible. It is explanatory drawing which shows the construction procedure in the case of installing a catchment basin. It is AA sectional view taken on the line of FIG. It is explanatory drawing which shows the construction procedure in the case of installing a cable trough and a water collecting trough. It is a top view which shows the example of a layout of a cable trough and a water collecting trough.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In each of the following embodiments, the cables 5 housed in the existing gutter 1 include various cables (for example, low-voltage or high-voltage power lines, telephone lines, A communication line such as an optical fiber) 5A.

When there is a margin in the size of the storage space 18 to be secured in the side groove 1, the cables 5 may include water and sewage piping and gas piping, or may be stored separately. .
In addition, the “cables” referred to in this specification is used not only to describe each cable 5A itself, but also to include the protective tube 5B when the cable 5A is laid through the protective tube 5B. ing.

In each embodiment of the present invention, the existing gutter 1 that accommodates the cables 5 is continuously installed in the longitudinal direction at the end portion in the width direction of the road (for example, a position that coincides with or is close to the public-private boundary line). Assume the case.
The reason is that a pipeline (for example, a combined sewage pipe) is already embedded in the center in the width direction of the road. However, if the cables 5 are stored in the side groove 1, such an existing pipeline is used. If the side groove 1 is close to the public-private boundary line, the pull-in distance to the private side of the cable 5A stored in the storage space 18 can be made as short as possible.

In each embodiment of the present invention, the existing gutter 1 was not limited to storing the cables 5 at the time of construction, but could also store the cables 5 from the time of construction. However, the case where it is used only for drainage is included.
As described above, the reason that the side gutter 1 capable of storing the cables 5 may be used only for the drainage purpose is that, in the case of the cable common gutter construction, it takes a very long time to adjust the opinions with the local residents. This is because there are cases where the underground construction of the cables 5 is examined or decided after the side gutter is first prepared.

  In each embodiment of the present invention, the existing gutter 1 is not only one that is constructed by continuously connecting gutter blocks made of precast concrete by factory production along the direction of drainage, but also a mold constructed at the construction site. This includes the case of on-site casting constructed by placing uncured concrete on the frame.

[First Embodiment]
FIG. 1 is an explanatory view showing a construction procedure of the joint groove forming method according to the first embodiment of the present invention.
In the joint groove forming method (hereinafter referred to as “first method”) in FIG. 1, the bottom plate member 12 is attached to the main body portion (hereinafter referred to as “side groove main body”) 11 excluding the lid member of the existing side groove 1. A new drainage space (drainage channel) 17 is formed at the upper part of the inner-air cross section. Hereinafter, the contents of the first construction method will be described with reference to FIG.

FIG. 1A is a cross-sectional view of the existing side groove 1. This side groove 1 has a side groove body 11 made of concrete having an open channel cross section, and a lid member 13 that closes the upper opening thereof.
The side groove main body 11 is made of precast concrete or cast-in-place concrete, and integrally has left and right side wall portions 14 and 14 and a bottom wall portion 15 that connects lower end portions thereof, and has a substantially U-shaped cross section with an open top. It consists of a structure.

First, the lid member 13 is removed from the upper end opening of the side groove main body 11 and the bottom of the side groove main body 11 is cleaned. Then, as shown in FIG. The bracket 21 is attached using an anchor member or the like in the middle of the inner surface in the vertical direction.
The bracket 21 is made of a steel material having an L-shaped cross section that extends in the longitudinal direction of the gutter body 11 (the paper surface penetrating direction in FIG. 1), and is attached to the inner surface of the side wall portion 14 so that the flange portion protrudes inward in the cross section.

In the present embodiment, a long angle member having an L-shaped cross section is used as the bracket 21, but the bracket 21 is attached so as to protrude from the side wall portion 14 at predetermined intervals in the longitudinal direction of the side groove main body 11. Alternatively, it may be an arm, rod, or other shape member.
That is, in the present specification, the “bracket” means a generic name of a cantilever-like support member, and any structure that can project in a cantilever manner from the inner surface of the side wall portion 14 has its structure. And the shape is not particularly limited.

Next, as shown in FIG. 1 (c), the protective tube 5 </ b> B of the cable 5 </ b> A is stacked and stored on the bottom of the side groove main body 11. When the storing operation of the protective tube 5B is completed, as shown in FIG. 1 (d), the plurality of bottom plate members 12 are bridged between the brackets 21 and 21, and the longitudinal direction (drainage direction) of the side groove body 11 is reached. Are installed side by side.
By mounting the bottom plate member 12, the inner space of the gutter body 11 is partitioned into a two-stage structure including a drainage space (drainage channel) 17 above the bottom plate member 12 and a storage space 18 below the drainage space (drainage channel) 17.

The bottom plate member 12 is made of, for example, a substantially flat plate made of concrete, steel, or synthetic resin, is smaller than the upper end opening width of the side groove main body 11, and is larger than the interval between the left and right brackets 21 and 21. Has a large width dimension.
Although not shown, the connection between the edge of the bottom plate member 12 in the width direction and the bracket 21 and between the bottom plate members 12 adjacent to each other in the direction of drainage is water-stopped by a sealing tape made of, for example, butyl rubber. Applied.

Then, by closing the upper open portion of the side groove main body 11 with the lid member 13, the cross-section closure for the side groove 1 is completed as shown in FIG. After that, for example, the cable 5A may be inserted from the cable rod 34 (see FIG. 17) into the protective tube 5B, and the cable 5A may be laid along the drain direction of the side groove 1.
However, the cable 5A is laid down by storing the cable 5A in the storage space 18 with or without the protective tube 5B before mounting the bottom plate member 12 (the state shown in FIG. 1C). You may make it perform.

On the other hand, for example, several years after the construction of the side groove 1 is completed as described above, it is necessary to additionally lay the cable 5A with respect to the side groove 1 in the specific section, or the failed cable 5A is installed. It may be necessary to replace it.
In this case, first, the lid member 13 is removed from the gutter body 11, and the drainage channel 17 in the specific section is subjected to necessary cleaning such as sludge removal, and then the hook ( The bottom plate member 12 is taken out from the inside of the side groove body 11 by hooking (not shown).

  Then, as shown in FIG. 1 (d), the storage space 18 for the cables 5 inside the side groove main body 11 is opened, so that the necessary cable 5A and the cable 5A required for the side groove main body 11 in the opened specific section are opened. The protection tube 5B may be added or replaced.

Thus, according to the first construction method, the cables 5 are housed in the bottom of the existing side groove main body 11, and the left and right brackets 21, 21 attached to the middle portions in the vertical direction on the left and right side surfaces of the side groove main body 11 are attached. Since the new drainage channel 17 is formed in the upper part in the side groove main body 11 over the bottom plate member 12, the existing side groove 1 can be formed into a common groove.
Moreover, since the inner side cross section in the side groove body 11 after the construction is the drainage channel 17 on the upper side and the storage space 18 for cables and the like on the lower side, there is nothing to obstruct when cleaning the drainage channel 17, Maintenance work such as cleaning the road 17 is facilitated.

In the first embodiment, the bracket 21 is employed as a “support member” for mounting the bottom plate member 12 in the middle portion in the vertical direction in the side groove main body 11, but the support member is not limited to the bracket 21. Absent. For example, as the support member, a member having a beam structure provided between the side wall portions 14 and 14 or a member having a gate-type frame structure housed in the side groove main body 11 can be adopted.
In addition, the point which can employ | adopt support members other than the bracket 21 is the same also in the case of 2nd Embodiment mentioned later.

FIG. 2 is a cross-sectional view showing a variation of the cross-section of the side groove capable of the first construction method.
As described above, in the first construction method, the existing side groove 1 is modified by the bracket 21 and the bottom plate member 12, and the side groove body 11 does not need to be replaced.
Therefore, the first construction method can be applied to the side grooves of various cross-sections currently available on the market or existing as shown in FIGS. 2 (a) to 2 (k).

In the side groove of FIG. 2 (f), the curb portion is formed integrally with the lid member, and FIGS. 2 (h) and 2 (j) are of the type in which an in-situ invert is constructed on the bottom wall portion.
Further, as shown in FIG. 2 (k), the first construction method can be applied even to a side groove without a lid member.

[Second Embodiment]
FIG. 3 is an explanatory view showing a construction procedure of the joint groove forming method according to the second embodiment of the present invention.
In the joint grooving method (hereinafter referred to as “second method”) in FIG. 3, a new drainage space (drainage) is formed at the upper part of the inner air section using the water channel member 22 with respect to the side groove body 11 of the existing side groove 1. Road) 17. Hereinafter, the content of the second construction method will be described with reference to FIG.

  Also in the second construction method, the lid member 13 is first removed from the upper end opening of the existing gutter body 11 shown in FIG. 3 (a), and the bottom of the gutter body 11 is cleaned, and then FIG. As shown in FIG. 4), the bracket 21 is attached using an anchor member or the like in the middle in the vertical direction of the inner surfaces of the side wall portions 14 and 14.

Next, as shown in FIG. 3 (c), the protective tube 5 </ b> B of the cable 5 </ b> A is stacked and stored on the bottom of the gutter body 11. When the storing operation of the protective tube 5B is completed, as shown in FIG. 3D, a plurality of water channel members 22 are bridged between the brackets 21 and 21, and the longitudinal direction (drainage direction) of the side groove main body 11 is set. Are installed side by side.
By mounting the water channel member 22, the internal space of the side groove main body 11 is partitioned into a two-stage structure including a drain space (drain channel) 17 above the bottom plate of the water channel member 22 and a storage space 18 below the drain space.

The water channel member 22 is made of, for example, a concrete, steel or synthetic resin cross-sectionally U-shaped flange member which is smaller than the upper end opening width of the side groove body 11 and between the left and right brackets 21 and 21. It has a width dimension larger than the interval.
Moreover, although not shown in figure, the connection end of the width direction edge part of the water channel member 22 and the bracket 21 and the water channel members 22 adjacent to each other in the drainage direction is subjected to a water stop treatment with a seal tape made of, for example, butyl rubber. Applied.

Then, by closing the upper open portion of the side groove main body 11 with the lid member 13, the cross-section closing for the side groove 1 is completed as shown in FIG. After that, for example, the cable 5A may be inserted from the cable rod 34 (see FIG. 17) into the protective tube 5B, and the cable 5A may be laid along the drain direction of the side groove 1.
However, the cable 5A is laid down by storing the cable 5A in the storage space 18 with or without the protective tube 5B before mounting the water channel member 22 (the state shown in FIG. 3C). You may make it perform.

  As apparent from a comparison between FIG. 3 and FIG. 1, the second construction method uses a channel member 22 instead of the bottom plate member 12 in the first construction method, and the construction procedure itself is the same as in the first construction method. is there. Therefore, the second method has the same effects as the first method.

FIG. 4 is a cross-sectional view showing a variation of the cross section of the side groove capable of the second construction method.
As described above, in the second construction method, the existing side groove 1 is modified by the bracket 21 and the water channel member 22, and it is not necessary to replace the side groove body 11.
Therefore, the second construction method can be applied to the side grooves of various cross-sections currently available on the market or existing as shown in FIGS. 4 (a) to 4 (k).

[Third Embodiment]
FIG. 5 is an explanatory view showing a construction procedure of the joint groove forming method according to the third embodiment of the present invention.
In the joint grooving method (hereinafter referred to as “third method”) in FIG. 5, the side groove body 11 of the existing side groove 1 is formed on the upper portion of the inner air cross section using the water channel member 24 having the latching portion 23. A new drainage space (drainage channel) 17 is configured. Hereinafter, the contents of the third construction method will be described with reference to FIG.

  In the third construction method, the lid member 13 is first removed from the upper end opening of the existing gutter body 11 shown in FIG. 5A, and the bottom of the gutter body 11 is cleaned, and then the bracket 21 is removed. Without attachment, as shown in FIG. 5B, the protective tube 5 </ b> B of the cable 5 </ b> A is stacked and stored on the bottom of the gutter body 11.

The channel member 24 used in the third construction method is made of, for example, a concrete-made, steel-made, or synthetic-resin-made saddle member having a substantially U-shaped cross section, but is made of a flange projecting outward in the width direction at the upper edge of the side plate portion. The channel member 22 is different from the water channel member 22 in that the latch portion 23 is provided.
Therefore, the water channel member 24 of the third construction method can be accommodated in the side groove main body 11 with the bottom floating by hooking the hooking portion 23 on the lid hooking portion at the upper end of the side groove main body 11.

Therefore, in the third construction method, as shown in FIG. 5 (c), the water channel member 24 is fitted into the upper opening of the side groove main body 11 where the storing operation of the protective tube 5B is completed, and as shown in FIG. 5 (d). Then, the water channel member 24 is mounted by hooking the hook portion 23 of the water channel member 24 to the upper end portion of the gutter body 11.
By mounting the water channel member 24, the inner space of the gutter body 11 is partitioned into a two-stage structure including a drainage space (drainage channel) 17 above the bottom plate of the water channel member 24 and a storage space 18 below the drainage space (drainage channel) 17.

  Although not shown, the connection end between the width direction edge portion of the water channel member 24 and the upper end portion of the side groove main body 11 and the water channel members 24 adjacent to each other in the drain direction is formed by, for example, a sealing tape made of butyl rubber or the like. Water stop treatment is applied.

Then, by closing the upper open portion of the side groove main body 11 with the lid member 13, the cross-section closure for the side groove 1 is completed as shown in FIG. After that, for example, the cable 5A may be inserted from the cable rod 34 (see FIG. 17) into the protective tube 5B, and the cable 5A may be laid along the drain direction of the side groove 1.
However, the cable 5A is laid by storing the cable 5A in the storage space 18 with or without the protective tube 5B before mounting the water channel member 24 (the state shown in FIG. 5B). You may make it perform.

According to the third construction method, the cables 5 are housed in the bottom of the existing side groove main body 11, and the hook portion 23 of the water channel member 24 is hooked on the upper end of the side groove main body 11. Since the new drainage channel 17 is formed in the upper part, the existing side groove 1 can be formed into a common groove.
In addition, since the inner cross section in the side groove main body 11 after the construction is the drainage channel 17 on the upper side and the storage space 18 for the cables 5 on the lower side, there is nothing to obstruct when cleaning the drainage channel 17, Maintenance work such as cleaning the drainage channel 17 is facilitated.

FIG. 6 is a cross-sectional view showing a variation of the cross-section of the side groove capable of the third method.
As described above, in the third method, the water channel member 24 is attached to the existing side groove 1 for modification, and there is no need to replace the side groove body 11.
Therefore, the third construction method can be applied to side grooves having various cross-sections that are currently on the market or are already installed as shown in FIGS. 6 (a) to 6 (k).

[Fourth Embodiment]
FIG. 7 is an explanatory view showing a construction procedure of the joint groove forming method according to the fourth embodiment of the present invention.
In the joint groove forming method (hereinafter referred to as “fourth method”) shown in FIG. A drainage space (drainage channel) 17 is configured. Hereinafter, the contents of the fourth method will be described with reference to FIG.

  In the fourth construction method, the lid member 13 is first removed from the upper end opening of the existing side groove main body 11 shown in FIG. 7A, and the bottom of the side groove main body 11 is cleaned. Without attachment, as shown in FIG. 7B, the protective tube 5B of the cable 5A is stacked and stored on the bottom of the gutter body 11.

  The cover member 25 used in the fourth construction method is made of, for example, a lower opening-shaped member made of concrete, steel, or synthetic resin, and has a pair of left and right sides extending downward from the top plate portion 26 and left and right ends thereof. Side plate portions 27, 27. The width dimension of the top plate portion 26 is substantially equal to the inner space width of the side groove main body 11.

Therefore, in the fourth method, as shown in FIG. 7C, with respect to the side groove main body 11 in which the storing operation of the protective tube 5B is completed, the lower ends of the side plate portions 27 and 27 are directed downward, and the end of the side plate portion 27 It is dropped until it reaches the bottom surface of the main body 11, and the protective tube 5 </ b> B is covered with the cover member 25 and attached to the bottom of the side groove main body 11 as shown in FIG.
By mounting the cover member 25, the internal space of the side groove main body 11 is partitioned into a two-stage structure including a drainage space (drainage channel) 17 above the top plate portion 26 of the cover member 25 and a storage space 18 below it. The

  Although not shown in the drawings, the connecting tape between the edge in the width direction of the top plate portion 26 and the inner surface of the side groove main body 11 and between the top plate portions 26 adjacent to each other in the direction of drainage is, for example, a sealing tape made of butyl rubber or the like. The water-stopping treatment is applied.

Then, by closing the upper open portion of the side groove main body 11 with the lid member 13, the cross-section closure for the side groove 1 is completed as shown in FIG. After that, for example, the cable 5A may be inserted from the cable rod 34 (see FIG. 17) into the protective tube 5B, and the cable 5A may be laid along the drain direction of the side groove 1.
However, the cable 5A is laid down by storing the cable 5A in the storage space 18 with or without the protective tube 5B before mounting the cover member 25 (the state shown in FIG. 7B). You may make it perform.

According to the fourth construction method, the cables 5 are accommodated in the bottom of the existing gutter main body 11, and the cover member 25 having a downward opening is accommodated in the gutter main body 11. Since the drainage channel 17 is formed, the existing side groove 1 can be formed into a common groove.
Moreover, since the upper side is the drainage channel 17 on the upper side and the lower side is a storage space for the cables 5 in the inner side of the gutter body 11 after construction, there is nothing to obstruct when cleaning the drainage channel 17. Maintenance work such as cleaning the road 17 is facilitated.

FIG. 8 is a cross-sectional view showing a variation of the cross-section of the side groove capable of the fourth method.
As described above, in the fourth method, the cover member 25 is installed after the cables 5 are stored in the existing side groove 1, and it is not necessary to replace the side groove body 11.
Therefore, the fourth method can be applied to the side grooves of various cross-sections currently on the market or existing as shown in FIGS. 8 (a) to 8 (k).

[Fifth Embodiment]
FIG. 9 is an explanatory diagram showing a construction procedure of the joint groove forming method according to the fifth embodiment of the present invention.
In the joint groove forming method (hereinafter referred to as “fifth method”) in FIG. 9, the inner side of the side groove main body 11 of the existing side groove 1 using the cable box 28 in which the cables 5 can be accommodated inside the cross section. A new drainage space (drainage channel) 17 is formed at the top of the cross section. Hereinafter, the content of the fifth construction method will be described with reference to FIG.

  In the fifth construction method, the lid member 13 is first removed from the upper end opening of the existing side groove main body 11 shown in FIG. 9A, and the bottom of the side groove main body 11 is cleaned. ), The cable box 28 through which the cable 5A can be inserted into the cross section is dropped from the upper opening of the gutter body 11.

  The cable box 28 used in the fifth construction method is a concrete block body having a plurality of storage holes 29 penetrating in the longitudinal direction, and has a cross-sectional width slightly smaller than the inner space width of the side groove body 11. And the cross-sectional height is about half of the inner space height of the same-side groove main body 11.

Therefore, as shown in FIG. 9C, when the cable box 28 is housed in the bottom of the side groove main body 11, the internal space of the side groove main body 11 becomes the drainage space (drainage channel) 17 above the cable box 28 and its It is divided into a two-stage upper and lower structure with a storage hole 29 which is a storage space in the box 28.
Although not shown in the figure, the connection end on the upper surface side of the cable box 28 is subjected to a water stop treatment with a seal tape made of, for example, butyl rubber.

  Then, by closing the upper open portion of the side groove main body 11 with the lid member 13, the cross-section closure for the side groove 1 is completed as shown in FIG. After that, for example, the cable 5A may be inserted from the cable rod 34 (see FIG. 17) into the housing hole 29 of the cable box 28, and the cable 5A may be laid along the drain direction of the side groove 1.

According to the fifth construction method, a new drainage channel 17 is formed in the upper part of the side groove main body 11 by installing the cable box 28 capable of storing the cables 5 inside the cross section at the bottom of the existing side groove main body 11. Therefore, the existing side groove 1 can be formed into a common groove.
Moreover, since the upper side is the drainage channel 17 on the upper side and the lower side is the cable box 28 in the side groove main body 11 after the construction, there is no obstacle when cleaning the drainage channel 17, Maintenance work such as cleaning becomes easy.

FIG. 10 is a cross-sectional view showing a variation of the cross-section of the side groove capable of the fifth method.
As described above, in the fifth construction method, the cable box 28 is applied to the existing side groove 1, and it is not necessary to replace the side groove body 11.
Therefore, the fifth construction method can be applied to the side grooves of various cross-sections currently available on the market or existing as shown in FIGS. 10 (a) to 10 (k).

[Modification of Fifth Embodiment]
FIG. 11 is an explanatory view showing a construction procedure of the joint groove forming method according to the modification of the fifth embodiment.
In the fifth embodiment, the cable box 28 having a plurality of storage holes 29 having a substantially circular cross section is employed. Instead, however, a square tube having substantially a hollow cross section as shown in FIG. A cable box 28 made of a body may be used.
Other structures are the same as those in the fifth embodiment. Moreover, FIG. 12 is sectional drawing which shows the variation of the side groove | channel cross section in which the modification of the 5th construction method is possible.

[Sixth Embodiment]
FIG. 13 is an explanatory view showing a construction procedure of the joint groove forming method according to the sixth embodiment.
In the joint groove forming method (hereinafter referred to as “sixth method”) in FIG. 13, a special lid member 30 that can store the cables 5 is used instead of the side groove main body 11 of the existing side groove 1. The storage space 18 for the cables 5 is formed in the upper part of the inner cross section. Hereinafter, the contents of the sixth method will be described with reference to FIG.

In the sixth construction method, the lid member 13 is first removed from the upper end opening of the existing gutter body 11 shown in FIG. 13A (the state shown in FIG. 13B), and this normal lid member 13 is replaced. In addition, the upper end opening of the side groove main body 11 is closed with a lid member 30 having a storage space 18 for the cables 5 on the lower surface side. The state after the closing is shown in FIG.
Therefore, as shown in FIG. 13D, when the gutter body 11 is closed by the lid member 30, the storage space 18 is disposed in the upper part of the internal space.

According to the sixth construction method, since the upper opening of the existing side groove main body 11 is closed with the lid member 30 having the storage space 18 in which the cables 5 can be stored inside the cross section, the existing side groove 1 for drainage is used. Can be co-grooved.
Further, since the storage space 18 for the cables 5 is provided in the lid member 30, if the lid member 30 is removed, there will be no obstacle when cleaning the drainage channel 17 in the gutter body 11, and the drainage channel 17. Maintenance work such as cleaning is easy.

FIG. 14 is a cross-sectional view showing a variation of the cross section of the side groove capable of the sixth construction method.
As described above, in the sixth method, the existing lid member 13 of the side groove 1 is replaced with a special lid member 30 having the storage space 18, and there is no need to replace the side groove body 11.
Therefore, the sixth construction method can be applied to the side grooves of various cross-sections currently available on the market or existing as shown in FIGS. 14 (a) to 14 (k).

[Problems when constructing the buttock section]
By the way, in the joint groove forming method of the said 1st-5th embodiment, after the construction, the drainage channel 17 is formed in the cross-sectional upper part of the internal cross section of the side groove main body 11 which comprises the side groove 1, and cross-section lower part A storage space 18 is formed.
For example, as shown in FIG. 18, the drainage basin 32 is extended to the side groove section 3 as a layout when connecting the drainage basin 32 and the cable basin 34 to the lateral groove section 3 constituted by the side grooves 1 having the upper and lower two-stage structures. It is conceivable that the cable rod 34 is offset to the center side of the road in the side groove section 3.

However, in the layout of FIG. 18, the cables 5 need to be laid around the outside of the side groove 1 in the buttock section 4 where the water collecting tub 32 and the cable tub 34 are installed. In this case, the cable laying operation is complicated in that the side groove 1 must be drilled.
Therefore, when the drainage basin 32 is connected to the side groove section 3 constituted by the side groove 1 in which the upper section is the drainage channel 17 and the lower section is the storage space 18 for the cables 5, for example, the construction procedure shown in FIG. 15 is performed. It is desirable.

[How to install a drainage basin]
FIG. 15 is an explanatory diagram showing a construction procedure in the case where the water catchment 32 is installed.
FIG. 15A is a plan view of the side groove section 3 in which the existing side grooves 1 are continuous and the existing water collecting basin 50 provided in the middle thereof, and the side grooves 1 and the water collecting basin 50 are arranged in the road width direction. Are arranged continuously in the longitudinal direction of the road so that the outer edge of the road line coincides with the public-private boundary line B.
In this case, first, as shown in FIG. 15B, the road around the existing catchment 50 is excavated, and the catchment 50 is removed from the road.

Next, as shown in FIG. 15 (c), a change block 31 and a new catchment 32 are installed at the location where the catchment 50 is removed.
FIG. 16 is a cross-sectional view (a cross-sectional view taken along the line AA in FIG. 15) of the change block 31 and the water catchment 32 that are newly provided. Here, it is assumed that each side groove 1 constituting the side groove section 3 is formed into a common groove by the first construction method using the bottom plate member 12.

As shown in FIG. 16, the change block 31 includes a block main body 35 having the same cross-sectional shape as the side groove main body 11 of the side groove 1 and a bottom plate member 36 having the same cross-sectional shape as the bottom plate member 12.
For this reason, when the bottom plate member 36 is mounted in the block main body 35, the interior is divided into two upper and lower stages of the upper space 37 and the lower space 38, and the upper space 37 has the same cross-sectional shape as the drainage channel 17 of the side groove 1. 38 has the same cross-sectional shape as the storage space 18 of the side groove 1.

Accordingly, as shown in FIG. 15C, when the change block 31 is concentrically connected to the end of the side groove 1, the upper space 37 of the change block 31 communicates with the drainage channel 17 of the side groove 1, and the lower space 38 is It communicates with the storage space 18 of the side groove 1.
The block main body 35 of the change block 31 has a drainage port 39 formed in the side wall portion on the center side of the road. The drainage that has flowed into the upper space 37 is discharged to the outside from the drainage port 39 and is located on the center side of the road It is taken into the water collection port 41 of the water collection tank 32 located.

Further, the lower space 38 of the change block 31 communicates straight in the longitudinal direction, and the cables 5 inside the storage space 18 of the side groove 1 can be passed through without being bent. The drainage basin 32 includes a box body 40. Although the shape and dimensions of the box body 40 can be arbitrarily designed, in this embodiment, the change block 31 has substantially the same cross-sectional shape as the block body 35 and the longitudinal dimension is larger than that of the block body 35. Yes.
A water collection port 41 is formed in the side wall portion of the box body 40, and the side wall portions of the box body 40 and the block body 35 are connected to each other in a superposed manner so that the water collection port 41 and the drain port 39 coincide with each other. Has been.

For this reason, the drainage that has flowed out of the upper space 37 after changing its direction toward the center of the road passes through the water collection port 41 and is once stored in the water collection space in the water collection tank 32.
In FIGS. 15 and 16, reference numeral 42 denotes a transverse drainage pipe connected to the catchment 32, and this drainage pipe 42 is connected to a confluent sewer pipe (not shown) embedded in the center of the road. ing.

According to the construction method of the catchment basin 32 shown in FIG. 15, the catchment basin 32 that collects drainage from the upper space 37 of the change block 31 is installed at a position offset to the center side of the road in the side groove section 3. Therefore, the storage space 18 of the side groove 1 is not divided by the water collecting trough 32.
For this reason, it is not necessary to bypass the cables 5 to the outside of the side groove 1 in the installation section of the water collecting basin 32, and the installation work of the cables 5 becomes easy.

[How to install cable 桝]
FIG. 17 is an explanatory diagram showing a construction procedure when installing the cable rod 34. FIG. 17A is a plan view of the side groove section 3 in which the existing side grooves 1 are continuous.
In this case, first, as shown in FIG. 17 (b), the periphery of a predetermined number of side grooves 1 constituting the existing side groove section 3 is opened, and the side grooves 1 are removed from the road.

And the cable rod 34 connected to the lower space 38 of the change block 31 is installed on the extension of the side groove section 3 in the removed part in the section vacated by the removal.
According to the joint groove construction method, since the cable rod 34 communicating with the lower space 38 of the change block 31 is installed on the extension of the side groove section 3 at the removed position, the cables 5 in the side groove 1 are changed. The cable 31 can be extended through the lower space 38 of the block 31 without being bent.

For this reason, it is not necessary to bypass the cables 5 to the outside of the side groove 1 in the installation section of the cable rod 34, and the installation work of the cables 5 becomes easy.
Further, if the cable rod 34 is arranged on the extension of the side groove section 3 as described above, the cable rod 34 can be arranged close to the public-private boundary line.
For this reason, the cable laying distance from the cable rod 34 to the private side can be shortened as compared with the case where the cable rod 34 is arranged offset to the center of the road (in the case of FIG. 18), and the cable center of the cable rod 34 is Since there are few overhang | projections to the side, there exists an advantage that the effective pavement width | variety of the road 2 can be ensured as much as possible.

In the construction example of FIG. 17, as shown in FIG. 17 (c), water collecting basins 32 are provided at both ends in the longitudinal direction of the cable ridge 34 (see FIG. 17 (c)). The construction method of the eaves 32 is the same as the case of FIG.
Moreover, the code | symbol 33 shown in FIG.17 (c) is the direction accommodated in the upper space 37 of the change block 31 in order to make it easy to flow the waste_water | drain which flows down the drainage channel 17 of the ditch | groove section 3 toward the catchment 32. It is a change member.

  The embodiment disclosed this time is illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, and includes all modifications that are within the scope of the claims and equivalents.

DESCRIPTION OF SYMBOLS 1 Side groove 3 Side groove area 4 Gutter area 5 Cables 11 Side groove main body 12 Bottom plate member 13 Lid member 14 Side wall part 15 Bottom wall part 21 Bracket (support member)
22 water channel member 23 latching portion 24 water channel member 25 cover member 28 cable box 30 lid member 17 drainage space (drainage channel)
18 Storage space 31 Changed block 32 Catchment basin 34 Cable basin 37 Upper space 38 Lower space

Claims (7)

A joint groove forming method for an existing gutter used for drainage, comprising the following steps (a1) to (c1).
(A1) A step of attaching a support member to a vertically middle portion of the left and right side surfaces in the side groove (b1) A step of storing the cables in the bottom portion of the side groove while leaving a storage space for cables to be added in the future. c1) A step of forming a new drainage channel in the upper part of the side groove by placing a bottom plate member that fits in the side groove on the support member A joint groove forming method for an existing gutter used for drainage, comprising the following steps (a2) to (c2).
(A2) A step of attaching a support member to a vertically middle part of the left and right side surfaces in the side groove (b2) A step of storing the cables in the bottom of the side groove while leaving a storage space for cables to be added in the future. c2) A step of forming a new drainage channel at the upper part in the side groove by placing an upper opening water channel member on the support member A joint groove forming method for an existing gutter used for drainage, comprising the following steps (a3) to (b3).
(A3) A step of storing cables in the bottom of the side groove while leaving a storage space for cables to be added in the future. (B3) The hooking portion of the water channel member having a hooking portion in the upper opening is formed in the side groove. The process of forming a new drainage channel in the upper part in the side groove by hanging on the upper end of A joint groove forming method for an existing gutter used for drainage, comprising the following steps (a4) to (b4).
(A4) A step of storing cables in the bottom of the side groove while leaving a storage space for cables to be added in the future. (B4) A cover member having a downward opening is stored in the side groove to cover the cables. To form a new drainage channel in the upper part of the gutter A joint grooving method for an existing gutter used for drainage, comprising the following step (a6).
(A6) A step of closing the upper opening of the side groove with a lid member having a storage space capable of storing cables in the cross section while leaving a storage space for cables to be added in the future. The joint groove forming method according to any one of claims 1 to 4 , further comprising the following steps (x) to (y).
(X) A change block having an upper space that changes the drainage direction of the drainage channel toward the center of the road and a lower space that allows the cables housed in the side groove to pass through without being bent. (Y) A step of installing a drainage basin for collecting drainage from the upper space at a position offset to the center of the road in the gutter section. The joint groove forming method according to claim 6 , further comprising the following step (z) instead of or in addition to the step (y).
(Z) A step of installing a cable rod communicating with the lower space so as to be positioned on an extension of the side groove section in an empty section by removing the existing side groove.

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