JP6774104B2 - Structure of connecting the base pipe to the manhole and how to connect the base pipe to the manhole - Google Patents

Description

The present invention relates to a structure for connecting a base pipe to a manhole and a method for connecting the base pipe to the manhole, which can easily connect the base pipe to the manhole in a bent state in a plan view.

When laying drainage channels such as sewer pipes on roads, manholes are provided at predetermined intervals. In addition, manholes are added as appropriate according to the road alignment. At the time of laying the drainage channel, the drainage channel is connected to the manhole so that the manhole position is the apex position of the bent portion of the drainage channel.

As a structure for connecting the drainage channel to the manhole, after providing a connecting hole (drilled hole) on the side wall of the manhole, the drainage channel is inserted into the connecting hole as in the case of a manhole cast in the field, and the outer peripheral surface of the drainage channel and the connecting hole are connected. A method of filling and fixing a mortar or the like with the inner peripheral surface of the above is generally adopted (see, for example, Non-Patent Document 1).

Catalog of "Assembly Manhole Unihall" published by the National Unihall Industry Association (July 1991)

According to the structure described in Non-Patent Document 1, drainage canals can be laid in sequence while manholes, catchment basins, etc. are bent portions of the drainage canals, but the drainage canals 300 can be used as side wall surfaces of the manholes, catchment basins 400, etc. When connecting to 402 in a non-orthogonal state (connecting the drainage channel diagonally to the wall surface), the width of the side wall surface 402 is wider than that when connecting the drainage channel 300 orthogonally to the side wall surface 402 of the manhole or the catchment basin 400. It needs to be expanded (Fig. 11). Further, the shape processing at the tip portion 302 of the drainage channel 300 that comes into contact with the manhole or the side wall surface 402 of the catchment basin 400 becomes complicated. When the drainage channel 300 is obliquely connected to the side wall surface 402 of the manhole or the catchment basin 400 in this way, the laying cost is significantly higher than when the drainage channel 300 is orthogonally connected to the side wall surface 402 of the manhole or the catchment basin. There is a problem that the price will rise.

The present invention is for solving the above problems, and when laying the base pipe while arranging the manhole at the bent position of the base pipe as a drainage channel , the manhole corresponding to the size of the base pipe is used. Can be used, and by facilitating the shape processing at the tip of the pedestal pipe, the laying cost of the pedestal pipe can be significantly reduced. The purpose is to provide a method of connecting.

That is, the structure for connecting the pedestal pipe to the manhole according to the present invention is that the pedestal pipe to the manhole is connected to the manhole so as to form a water channel in which the upstream side pedestal pipe and the downstream side pedestal pipe are bent in a plan view. It has the upstream side pedestal pipe, the upstream side perforated plate which is a joint formed with the upstream side insertion hole through which the upstream side pedestal pipe can be inserted, and the upstream side box culvert. A pipe with a side stand is connected orthogonally to the upstream side perforated plate with its end inserted into the upstream side insertion hole, and the upstream side perforated plate is connected to the upstream side box culvert on the upstream side. A downstream perforated joint formed with an upstream unit fixed in an arrangement that closes the upstream end of a box culvert, a downstream pedestal pipe, and a downstream insertion hole through which the downstream pedestal can be inserted. It has a plate and a downstream box culvert, and the downstream side pedestal pipe is connected orthogonally to the downstream side perforated plate with its end inserted into the downstream side insertion hole, and the downstream side perforated pipe is connected. The plate has a downstream unit fixed to the downstream box culvert in an arrangement that closes the downstream end of the downstream box culvert, and with the downstream end of the upstream box culvert of the upstream unit. The plan view shape of the upstream end of the downstream box culvert of the downstream unit is formed on a cut surface that is a single inclined surface that is not perpendicular to the center line in the flow path direction, and both cuts are formed. By connecting the upstream side box culvert and the downstream side box culvert with the surfaces in contact with each other, the first pedestal pipe and the second pedestal pipe are arranged in a bent state in a plan view. A through hole communicating with the inside is formed on either the upper surface of the upstream box culvert and the upper surface of the downstream box culvert, and the manhole is arranged at the position of the through hole.

It is preferable that the filling material is filled between the upstream side pedestal pipe and the upstream side insertion hole and between the downstream side pedestal pipe and the downstream side insertion hole, respectively.

It is preferable that a step is provided in the manhole, and a step following the step in the manhole is provided on the inner wall surface of any of the upstream box culvert and the downstream box culvert in which the manhole is arranged.

Further, the method of connecting the pedestal pipe to the manhole according to the present invention is to connect the pedestal pipe to the manhole in which the upstream side pedestal pipe and the downstream side pedestal pipe are connected to the manhole so as to form a curved water channel in a plan view. In the connection method, a step of connecting the upstream side pedestal pipe orthogonally to the upstream side perforated plate in a state where the end is inserted into the insertion hole of the upstream side perforated plate serving as a joint, and the upstream side. The upstream box is attached to the upstream box culvert whose downstream end is formed on a cut surface that is a single inclined surface whose shape in plan view is not perpendicular to the center line in the flow path direction. A step of fixing the culvert in an arrangement that closes the upstream end, and a state in which the downstream pedestal pipe is inserted into the insertion hole of the downstream perforated plate that is a joint at the end, and is orthogonal to the downstream perforated plate. And the downstream side perforated plate is formed on a cut surface whose upstream end is a single inclined surface whose shape in plan view is not perpendicular to the center line in the flow path direction. A step of fixing to the side box culvert in an arrangement that closes the downstream end of the downstream box culvert, and the cut surface which is the downstream end of the upstream box culvert and the upstream end of the downstream box culvert. The first pedestal pipe and the second pedestal pipe are arranged in a bent state in a plan view by bringing the cut surface into contact with the upstream box culvert and connecting the downstream box culvert. It is characterized by comprising a step of arranging the manhole at a position of a through hole formed in communication with the upper surface of either the upper surface of the upstream box culvert and the upper surface of the downstream box culvert. ..

When the filling material is filled between the upstream side pedestal pipe and the insertion hole of the upstream side perforated plate and between the downstream side pedestal pipe and the insertion hole of the downstream side perforated plate, respectively. Suitable.

In the present invention, instead of directly connecting the pedestal pipe to the manhole, the pedestal pipe is connected orthogonally to the upstream box culvert and the downstream box culvert via joints, respectively, and the upstream box culvert and the downstream box culvert are connected. By abutting and connecting the cut surfaces cut diagonally to the flow path of, it is possible to form a flow path in which the upstream side pedestal pipe and the downstream side pedestal pipe are arranged diagonally, and the upstream side box culvert. A simple configuration is adopted in which a manhole is arranged in a through hole formed on the upper surface of one of the box culverts on the downstream side and the downstream side culvert. As a result, it is not necessary to drill diagonal holes in the manhole or to process the complicated shape of the tip of the manhole, and the cost of laying the manhole and the manhole can be significantly reduced.

It is a main part plan view which shows the connection structure of the drainage channel in 1st Embodiment. It is a front view of the upstream drainage channel, the upstream joint, and the upstream coupling in the first embodiment. It is a front view and a plan view which show the state which the upstream side drainage channel and the upstream side joint shown in FIG. 2 are orthogonally connected. It is a front view and a plan view which shows the state which showed the state which connected the orthogonal connection body of the upstream side drainage channel and the upstream side joint shown in FIG. 3 to the upstream side connection body shown in FIG. It is a main part plan view which shows the connection structure of the drainage channel in 2nd Embodiment. It is a front view of the upstream drainage channel, the upstream joint, and the upstream coupling in the second embodiment. It is a front view of the orthogonal connection body of the upstream side drainage channel and the upstream side joint shown in FIG. 6, and the front view of the upstream side connection body provided with the 3rd communication hole. It is a front view which shows the state which connected the orthogonal connection body of the upstream side drainage channel and the upstream side joint shown in FIG. 7, and the upstream side connection body provided with the 3rd communication hole. It is the top view which shows the connection structure of the drainage channel in 3rd Embodiment, and the front view which saw the downstream side unit of the downstream side drainage channel from the downstream side. It is a main part plan view which shows the connection structure of the drainage channel in 4th Embodiment. It is explanatory drawing of the prior art.

The present invention will be described in detail below based on the embodiments.

(First Embodiment)
1 to 4 show an example of a drainage channel connection structure according to the first embodiment. The arrows in the drawings of the present application indicate the direction in which water flows. Here, as shown in FIG. 1, the main part of the drainage channel 100 in which the upstream drainage channel 10 and the downstream drainage channel 20 are connected in a bent state is extracted and illustrated, and the drainage channel 100 is shown. Other drainage channels are connected to the upstream side of the upstream drainage channel 10 and the downstream side of the downstream drainage channel 20 in the above. In this embodiment, a mode in which a base pipe is used for the upstream drainage channel 10 and the downstream drainage channel 20 will be described. In the upstream drainage channel 10 and the downstream drainage channel 20, after appropriately excavating the original ground, the foundation crushed stone G is laid, the leveling concrete C is laid on the upper surface of the foundation crushed stone G, and the leveling concrete C is laid on the upper surface. To.

As shown in FIGS. 2 to 4, the upstream drainage channel 10 is an upstream end portion of the upstream box culvert 40 as an upstream connection via an upstream perforated plate 30 of the plate as an upstream joint. It is connected to 42. As shown in FIGS. 2 and 3, in the upstream drainage channel 10, the connecting side tip portion 12 is inserted into the insertion hole 32 formed at the center position of the upstream side perforated plate 30, and the upstream drainage channel 10 and the upstream side drainage channel 10 are inserted. The side perforated plate 30 is orthogonally connected to the plate 30. The gap 50 between the connecting side tip portion 12 and the insertion hole 32 is filled with the filling material 52. As such a filler 52, a known structure typified by mortar or rubber packing can be adopted.

As shown in FIGS. 2 and 4, the upstream side perforated plate 30 in which the upstream side drainage channel 10 is orthogonally connected is attached to the upstream side box culvert 40 in an arrangement that closes the upstream side end portion 42 of the upstream side box culvert 40. Has been done. The upstream perforated plate 30 in the present embodiment is formed in the same shape as the outer shape of the upstream end 42 of the upstream box culvert 40, and the position of the PC steel rod insertion portion 46 used for connecting the upstream box culvert 40. A PC steel rod insertion portion 34 is provided so as to be aligned with the above. The upstream side perforated plate 30 can be attached to the upstream side box culvert 40 in the same manner as the method of connecting the upstream side box culverts 40 to each other. It is preferable that a sealing material (not shown) for maintaining watertightness is provided around the front and back surfaces of the upstream side perforated plate 30 in the plate thickness direction at the outer position of the insertion hole 32. In this way, the upstream drainage channel 10 is connected to the upstream end 42 of the upstream box culvert 40, which is the upstream end of the upstream connector, via the upstream perforated plate 30 which is an upstream joint. Can be done.

Further, as shown in FIG. 4, the downstream end portion 44 of the upstream box culvert 40 has a plan view shape so as to be a non-orthogonal plane (inclined plane) with respect to the flow path direction center line of the upstream box culvert 40. Is formed on the slash cut surface. Such a downstream end 44 is pre-cut at the factory so that one end of a standard box culvert is a slash surface, but it should be cut at the site using a large concrete cutter or the like. You can do it.

Regarding the configuration of the downstream side joint and the downstream side connecting body to which the downstream side drainage channel 20 is connected, the upstream side joint (upstream side perforated plate 30) and the upstream side connecting body to which the upstream side drainage channel 10 is connected (upstream side perforated plate 30) Since the upstream side and the downstream side are interchanged with respect to the configuration of the upstream side box culvert 40), detailed description here will be omitted.

That is, as shown in FIGS. 1 to 4, in the downstream drainage channel 20, the connecting side tip portion 22 is orthogonally connected to the insertion hole 62 of the downstream side perforated plate 60 of the plate body which is the downstream side joint, and the downstream side. The filling material 52 is filled in the gap 50 between the drainage channel 20 and the insertion hole 62. The downstream perforated plate 60 is provided with a PC steel rod insertion portion 64 aligned with a PC steel rod insertion portion 76 for connecting the downstream box culverts 70, which are downstream connecting bodies. The downstream drainage channel 20 is connected to the downstream end 72 of the downstream box culvert 70, which is the downstream end of the downstream connector, via the downstream perforated plate 60, which is a downstream joint. The upstream end 74, which is the upstream end of the downstream box culvert 70, is formed on a plan view slash cut surface.

The connection structure of the drainage channel 100 in the present embodiment includes the downstream end of the upstream unit 80 by the upstream drainage channel 10, the upstream perforated plate 30, and the upstream box culvert 40, and the downstream drainage channel 20 and the downstream side. It is configured by abutting and connecting the perforated plate 60 and the upstream end portion of the downstream unit 90 by the downstream box culvert 70. That is, the downstream end portion 44 of the upstream side box culvert 40, which is the downstream end portion of the upstream side unit 80, and the upstream side end portion 74 of the downstream side box culvert 70, which is the upstream side end portion of the downstream side unit 90, respectively. Since it is formed on the slash-cut surface in a plan view, the upstream drainage channel 10 and the downstream drainage channel 20 are connected in a bent state by connecting the slash-cut surfaces in a watertightly contacted state. be able to.

According to the configuration of the connecting structure of the drainage channel 100 in the present embodiment, the upstream drainage channel 10 and the downstream drainage channel 20 are connected to the objects to be connected (upstream perforated plate 30 and downstream perforated plate 60), respectively. Since they are connected at right angles, shape processing at the tip of the connection is unnecessary or extremely easy. In the bent portion of the drainage channel 100, the downstream end 44 of the upstream box culvert 40 and the upstream end 74 of the downstream box culvert 70 are each processed into slash-cut surfaces at a factory or site, and the slash-cut surfaces are formed. All you have to do is abut and connect. Therefore, the workability of the laying work of the drainage channel 100 is improved, and the construction cost can be significantly reduced.

(Second Embodiment)
5 and 8 show an example of a drainage channel connection structure according to the second embodiment. The configuration of the present embodiment is different from that of the first embodiment in that a catchment basin is used as the upstream side connecting body and the downstream side connecting body, respectively. The same configuration as that of the first embodiment is designated by the reference numerals used in the first embodiment, and detailed description thereof is omitted here.

In the present embodiment, the insertion hole 32 of the upstream side perforated plate 30 corresponds to the first insertion hole, and the insertion hole 62 of the downstream side perforated plate 60 corresponds to the third insertion hole. In the present embodiment, the upstream side collecting basin 140 is used as the upstream side connecting body, and the downstream side collecting basin 170 is used as the downstream side connecting body.

As shown in FIGS. 6 and 7, a second insertion hole 143 for inserting the upstream drainage channel 10 is bored in the side wall surface 142 corresponding to the upstream end of the upstream catchment basin 140. .. A PC steel rod insertion portion 146 is provided on the side wall surface 142 corresponding to the upstream end of the upstream catchment basin 140. Further, as shown in FIG. 5, the side wall surface corresponding to the downstream end of the upstream catchment basin 140 has been removed, and the internal space 141 of the upstream catchment basin 140 is exposed to the outside. .. The exposed surface 144 of the internal space 141 corresponding to the downstream end of the upstream catchment basin 140 is formed so as to be a slash cut surface when the upstream catchment basin 140 is viewed in a plan view. Such an upstream water collecting basin 140 is cut out in advance at a factory or a site using a concrete cutter or the like.

Similarly, as shown in FIGS. 6 and 7, a fourth insertion hole 173 for inserting the downstream drainage channel 20 is formed in the side wall surface 172 corresponding to the downstream end of the downstream catchment basin 170. There is. A PC steel rod insertion portion 176 is provided on the side wall surface 172 corresponding to the downstream end of the downstream catchment basin 170. Further, as shown in FIG. 5, the side wall surface corresponding to the upstream end of the downstream catchment basin 170 has been removed, and the internal space 171 of the downstream catchment basin 170 is exposed to the outside. There is. The exposed surface 174 of the internal space 171 corresponding to the upstream end of the downstream catchment basin 170 is formed so as to be a slash cut surface when the downstream catchment basin 170 is viewed in a plan view. Such a downstream water collecting basin 170 is cut out in advance using a concrete cutter or the like at a factory or a site.

In the same manner as in the first embodiment, the upstream drainage channel 10 is connected to the upstream perforated plate 30 in a state of being orthogonal to each other, and then the upstream drainage channel 10 is connected by the upstream perforated plate 30 orthogonally connected. The upstream side perforated plate 30 is attached to the upstream side water collecting basin 140 in a watertight state in the same manner as in the first embodiment in an arrangement that closes the second insertion hole 143 of the upstream side collecting basin 140.

Similarly, in the same manner as in the first embodiment, the downstream drainage channel 20 is connected to the downstream perforated plate 60 in a state of being orthogonal to each other, and then the downstream drainage channel 20 is orthogonally connected to the downstream perforated plate. The downstream side perforated plate 60 is attached to the downstream side water collecting basin 170 in a watertight state in the same manner as in the first embodiment in an arrangement that closes the fourth insertion hole 173 of the downstream side collecting basin 170 by 60.

In the present embodiment, as shown in FIG. 5, the upstream unit 180 is composed of the upstream drainage channel 10, the upstream perforated plate 30, and the upstream catchment basin 140. Further, the downstream unit 190 is composed of the downstream drainage channel 20, the downstream perforated plate 60, and the downstream collecting basin 170. The exposed surface 144 formed on the slash-cut surface by slash-cutting a part of the internal space 141 of the upstream water collecting basin 140, which is the downstream end of the upstream unit 180, and the upstream end of the downstream unit 190. If a part of the internal space 171 of the downstream catchment basin 170 is slash-cut and watertightly connected to the exposed surface 174 formed on the slash-cut surface, the drainage channel 100 in the present embodiment is connected. The connection structure of is obtained.

The present embodiment can also realize the same level of workability and construction cost as the first embodiment.

(Third Embodiment)
FIG. 9 is a plan view of a main part showing the connection structure of the drainage channel according to the third embodiment and a front view of the downstream unit of the downstream drainage channel as viewed from the downstream side. In the present embodiment, the same configurations as those in the first embodiment and the second embodiment are designated by the reference numerals used in the respective embodiments, and detailed description thereof is omitted here.

In this embodiment, a through hole is formed from the upper surface of the downstream box culvert 70 (downstream catchment basin 170) to the inside of the downstream box culvert 70 (downstream catchment basin 170), and at the position of the through hole. It is a configuration in which a manhole MH is arranged. Here, a through hole is formed from the upper surface of the downstream box culvert 70 (downstream collecting basin 170) to the inside of the downstream box culvert 70 (downstream collecting basin 170), but the upstream box culvert is formed. A through hole is formed from the upper surface of the 40 (upstream collecting basin 140) to the inside of the upstream box culvert 40 (upstream collecting basin 140), and the upstream box culvert 40 (upstream collecting basin 140) is formed. It is also possible to arrange a manhole. By adopting such a configuration, it is convenient in that maintenance of the drainage channel 100 and the like can be performed. As shown in FIG. 9, a step S is added to the inner wall surface of the downstream box culvert 70 (downstream catchment basin 170) in the present embodiment as an extension of the step in the manhole MH.

(Fourth Embodiment)
FIG. 10 is a plan view of a main part showing the connecting structure of the drainage channel according to the fourth embodiment. In the present embodiment, the same configurations as those in the first to third embodiments are designated by the reference numerals used in the respective embodiments, and detailed description thereof is omitted here.

In the present embodiment, the upstream perforated plate 30 in which the upstream drainage channel 10 is orthogonally connected is connected to the normal box culvert 200, and the upstream drainage channel 10, the upstream perforated plate 30, and the normal box culvert 200 are connected. Is connected to the upstream end 42 of the upstream box culvert 40. By adopting such a configuration, the inflow drainage channel 15 from the side surface can be connected (merged) between the upstream drainage channel 10 and the downstream drainage channel 20, and the variation of the drainage channel 100 is diversified. It is convenient in that it can be made to. Here, the box culvert 200 is usually arranged between the upstream drainage channel 10 and the upstream box culvert 40 (upstream collecting basin 140), but the downstream box culvert 70 (downstream collecting basin 170) is arranged. ) And the downstream drainage channel 20 can be arranged with a normal box culvert 200, and the inflow drainage channel 15 of the normal box culvert 200 can be connected (merged).

Although the drainage channel connection structure and the drainage channel connection method in the present embodiment have been described above, the technical scope of the present invention is not limited to the above embodiments. For example, in the above embodiment, the embodiment in which the pedestal pipe is adopted for the upstream drainage channel 10 and the downstream drainage channel 20 is described, but other known drainage channels can also be adopted.

Further, the inflow / drainage channel 15 is not only a stand-mounted pipe, but also known drainage channels such as a circular cross-section pipe, a U-shaped groove, a box culvert, and a free slope side groove can be used.

Further, in the second embodiment, a second insertion hole 143 for inserting the upstream drainage channel 10 is formed in the side wall surface 142 corresponding to the upstream end of the upstream water collecting basin 140, and the upstream side is provided. The perforated plate 30 is attached to the side wall surface 142 so as to close the second insertion hole 143, but the present invention is not limited to this form. For example, instead of the upstream perforated plate 30, the connecting side tip 12 of the upstream drainage channel 10 can be inserted, and the diameter is expanded from the tubular portion that can be inserted into the second insertion hole 143 and the tip of the tubular portion. A so-called manhole joint having a flange can also be used. Then, if a rubber manhole joint is adopted, the upstream drainage channel 10 can be watertightly connected to the side wall surface 142 of the upstream water collecting basin 140 so as to close the second insertion hole 143 with a flange. ..

Similarly, in the second embodiment, a fourth insertion hole 173 for inserting the downstream drainage channel 20 is bored in the side wall surface 172 corresponding to the downstream end of the downstream catchment basin 170. , The downstream side perforated plate 60 is attached to the side wall surface 172 so as to close the fourth insertion hole 173, but the present invention is not limited to this form. For example, instead of the downstream perforated plate 60, the connecting side tip 22 of the downstream drainage channel 20 can be inserted, and the diameter is expanded from the tubular portion that can be inserted into the fourth insertion hole 173 and the tip of the tubular portion. A so-called manhole joint having a flange can also be used. Then, if a rubber manhole joint is adopted, the upstream drainage channel 20 can be watertightly connected to the side wall surface 172 of the downstream catchment basin 170 so as to close the fourth insertion hole 173 with a flange. ..

Further, in the fourth embodiment, the upstream side perforated plate 30 and the upstream side are connected to the upstream side end portion 42 (side wall surface 142) of the upstream side box culvert 40 (upstream side catchment basin 140) via the standard box culvert 200. Although the drainage channel 10 is connected, the present invention is not limited to this form. For example, the length of the upstream box culvert 40 (upstream collecting basin 140) in the flow path direction as compared with the upstream box culvert 40 (upstream collecting basin 140) in the first to third embodiments. It may be in a lengthened form.

According to the above embodiment, the step of orthogonally connecting the upstream drainage channel 10 to the upstream box culvert 40 (upstream collecting basin 140) which is an upstream connecting body via the upstream perforated plate 30 and the downstream A step of orthogonally connecting the side drainage channel 20 to the downstream side box culvert 70 (downstream side water collecting basin 170) which is a downstream side connecting body via the downstream side perforated plate 60, and forming the side drainage channel 20 so as to be a plan view slash cut surface. The downstream end 44 (side wall surface 142) of the upstream box culvert 40 (upstream collecting basin 140) and the upstream end 74 (side wall surface 172) of the downstream box culvert 70 (downstream collecting basin 170). ) Are brought into contact with each other and connected, so that 100 can be obtained by connecting the upstream drainage channel 10 and the downstream drainage channel 20 in a bent state.

Further, the step of orthogonally connecting the upstream drainage channel 10 to the upstream end portion 42 (side wall surface 142) of the upstream box culvert 40 (upstream collecting basin 140) via the upstream perforated plate 30 is the first step. The step of connecting the upstream drainage channel 10 orthogonally to the upstream perforated plate 30 formed in the plate having the insertion hole 32 which is the insertion hole can be performed. Further, a step of forming a second insertion hole 143 in the upstream end 42 (side wall surface 142) of the upstream box culvert 40 (upstream collecting basin 140) for inserting the upstream drainage channel 10 and an upstream side. The upstream side perforated plate 30 is arranged so as to block the second insertion hole 143 with the upstream side perforated plate 30 in which the drainage channel 10 is orthogonally connected to the upstream side perforated plate 30. It can be a step of attaching to (side wall surface 142).

Further, the step of orthogonally connecting the upstream drainage channel 10 to the downstream end 72 (side wall surface 172) of the downstream box culvert 70 (downstream collecting basin 170) via the downstream perforated plate 60 is the third step. A step of orthogonally connecting the downstream drainage channel 20 to the downstream perforated plate 60 formed in the plate having the insertion hole 62 which is the insertion hole can be performed. Further, a step of forming a fourth insertion hole 173 in the downstream end 72 (side wall surface 172) of the downstream box culvert 70 (downstream catchment basin 170) for inserting the downstream drainage channel 20 and a step of forming a fourth insertion hole 173 on the downstream side. The downstream side perforated plate 60 is arranged to close the fourth insertion hole 173 with the downstream side perforated plate 60 in which the drainage channel 20 is orthogonally connected, and the downstream side end portion 72 of the downstream side box culvert 70 (downstream side catchment basin 170). It can be a step of attaching to (side wall surface 172).

Then, if the step of filling the filling material 52 having watertightness between the upstream drainage channel 10 and the insertion hole 32 and between the downstream drainage channel 20 and the insertion hole 62 (gap 50) is performed, the upstream side The drainage channel 10, the upstream side perforated plate 30, the downstream side drainage channel 20, and the downstream side perforated plate 60 can be watertightly connected.

Then, as the drainage channel connecting structure and the drainage channel connecting method in the present invention, a form in which the embodiments described above and various modifications are appropriately combined can also be adopted.

10 upstream drainage channel, 12 connecting tip,
15 Inflow and drainage channels,
20 Downstream drainage channel, 22 Connecting side tip,
30 upstream side perforated plate (upstream side joint), 32 insertion holes, 34 PC steel rod insertion part,
40 Upstream box culvert (upstream connector),
42 upstream end, 44 downstream end, 46 PC steel rod insertion part,
50 gaps, 52 fillers,
60 Downstream perforated plate, 62 Insertion hole, 64 PC steel rod insertion part,
70 Downstream box culvert (downstream connection),
72 Downstream end, 74 Upstream end, 76 PC steel rod insertion part,
80 upstream unit, 90 downstream unit, 100 drainage channel,
140 Upstream catchment basin,
141 internal space, 142 side wall surface (upstream end), 143 second insertion hole,
144 exposed surface (downstream end), 146 PC steel rod insertion part,
170 Downstream catchment basin,
171 internal space, 172 side wall surface (downstream end), 173 fourth insertion hole,
174 exposed surface (upstream end), 176 PC steel rod insertion part,
180 upstream unit, 190 downstream unit, 200 normal box culvert,
300 drainage channel, 302 tip, 400 catchment basin, 402 side wall surface

Claims (5)

It is a connection structure of the pedestal pipe to the manhole in which the upstream pedestal pipe and the downstream pedestal pipe are connected to the manhole to form a curved water channel in a plan view.
It has an upstream side pedestal pipe, an upstream side perforated plate which is a joint formed with an upstream side insertion hole through which the upstream side pedestal pipe can be inserted, and an upstream side box culvert, and the upstream side pedestal pipe is an end. The portion is connected orthogonally to the upstream side perforated plate with the portion inserted into the upstream side insertion hole, and the upstream side perforated plate is connected to the upstream side box culvert and the upstream end of the upstream side box culvert. The upstream unit fixed in an arrangement that closes the part,
It has a downstream side pedestal pipe, a downstream side perforated plate which is a joint formed with a downstream side insertion hole through which the downstream side pedestal pipe can be inserted, and a downstream side box culvert, and the downstream side pedestal pipe is an end. The portion is connected orthogonally to the downstream side perforated plate with the portion inserted into the downstream side insertion hole, and the downstream side perforated plate is connected to the downstream side box culvert and the downstream end of the downstream side box culvert. It has a downstream unit that is fixed in an arrangement that closes the part,
A single plane shape of the downstream end of the upstream box culvert of the upstream unit and the upstream end of the downstream box culvert of the downstream unit are non-perpendicular to the center line in the flow path direction. The first pedestal pipe and the first pedestal pipe are formed on the cut surface which is the inclined surface of the above, and the both cut surfaces are brought into contact with each other to connect the upstream box culvert and the downstream box culvert. The pedestal pipe of 2 is arranged in a bent state in a plan view,
A manhole characterized in that a through hole communicating with the inside is formed on the upper surface of either the upper surface of the upstream box culvert and the upper surface of the downstream box culvert, and the manhole is arranged at the position of the through hole. Connection structure of the base pipe to. The first aspect of claim 1, wherein a filling material is filled between the upstream side pedestal pipe and the upstream side insertion hole and between the downstream side pedestal pipe and the downstream side insertion hole, respectively. Connection structure of the pedestal pipe to the manhole. A step is provided in the manhole, and a step following the step in the manhole is provided on the inner wall surface of either the upstream box culvert or the downstream box culvert in which the manhole is arranged. The structure for connecting a pedestal pipe to a manhole according to claim 1 or 2. It is a method of connecting the pedestal pipe to the manhole, in which the upstream pedestal pipe and the downstream pedestal pipe are connected to the manhole to form a curved water channel in a plan view.
A step of connecting the upstream side pedestal pipe orthogonally to the upstream side perforated plate in a state where the end is inserted into the insertion hole of the upstream side perforated plate which is a joint.
The upstream side perforated plate is attached to the upstream side box culvert whose downstream end is formed on a cut surface which is a single inclined surface whose plan view shape is non-vertical to the center line in the flow path direction. The process of fixing in an arrangement that closes the upstream end of the side box culvert,
A step of connecting the downstream side pedestal pipe orthogonally to the downstream side perforated plate in a state where the end is inserted into the insertion hole of the downstream side perforated plate which is a joint.
Downstream of the downstream perforated plate to a downstream box culvert whose upstream end is formed on a cut surface that is a single inclined surface whose plan view shape is non-vertical to the centerline in the flow path direction. The process of fixing in an arrangement that closes the downstream end of the side box culvert,
The cut surface, which is the downstream end of the upstream box culvert, and the cut surface, which is the upstream end of the downstream box culvert, are brought into contact with each other to connect the upstream box culvert and the downstream box culvert. As a result, the step of arranging the first pedestal pipe and the second pedestal pipe in a bent state in a plan view, and
The manhole is provided with a step of arranging the manhole at a position of a through hole formed in communication with the upper surface of either the upper surface of the upstream box culvert and the upper surface of the downstream box culvert. How to connect the pedestal pipe. It has a step of filling a filling material between the upstream side pedestal pipe and the insertion hole of the upstream side perforated plate and between the downstream side pedestal pipe and the insertion hole of the downstream side perforated plate. The method for connecting a mount pipe to a manhole according to claim 4, wherein the base pipe is connected to the manhole.

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