JP5002785B2 - Underwater channel block - Google Patents

Description

  The present invention relates to a culvert type waterway block, and more specifically, for example, at a road intersection or the like, continuously to a side waterway block buried in a road along a roadside or a pedestrian road boundary, etc., and its drainage capacity It is related to a culvert type waterway block that is used to form a road surface waterway facility to cross an intersecting road without degrading the road and without the road pavement being divided and impairing the road function, safety and landscape. .

  Conventionally, for example, a cylindrical concrete waterway block having a waterway along the longitudinal direction inside is connected along the roadside or pedestrian road boundary, and the upper surface is exposed to the road surface. As a result, the water channel for the side belt along the longitudinal direction of the road is formed by being buried in the road, and the continuous waterway in the longitudinal direction is blocked by the road intersecting with the same at the intersection of the road. In such cases, roads that intersect to cross the crossing road without exposing the waterway to the road surface from the aspects of road functions such as ensuring drainage gradient on the road pavement surface and preventing the exposure of unnecessary objects, safety and landscape A deep mass block is buried in the road at the end of the water channel facing the river, and the end of the water channel block is connected to the upper part of the mass block. A drainage pipe embedded with a covering to cross the road is passed between the lower parts of the mass block, so that a waterway facility for the road surface crossing the intersection road is formed. Yes.

However, such conventional road surface canal facilities have a deep-bottomed mass block embedded in the road at the end of the water channel block facing the road that intersects the water channel, and the end of the water channel block is connected to the upper part of the mass block. In order to form a drainage pipe embedded with a earth covering to cross the road between the lower parts of the mass block that is embedded opposite to the road, the channel block is formed. Unlike connecting in a straight line and continuously, it is necessary to dig deeper to connect the drain pipe that should have a deep-bottomed mass block and earth covering on the road. The construction is cumbersome and time-consuming, and there is a problem that the construction workability is inferior, and the water channel is bent into a concave shape by the mass block and the drain pipe connected to the water channel block, and the bottom part is not aligned linearly. Drainage of water channel block has is impaired, drainage was a problem to decrease.
The present invention has been made in view of such conventional problems, and it is a culvert that forms a waterway facility for road surfaces with good flowability such as drainage capacity while improving the workability of the work without requiring time and effort for the work. The challenge is to provide a water channel block.

In order to solve the above problems, the underdrain channel block of the present invention has a channel 2a along the longitudinal direction inside, and the upper surface 2b has a predetermined thickness between the upper portion of the channel 2a, and the channel 2a The cross-sectional shape forming a substantially flat shape is substantially bilaterally symmetric, and the vertical height is smaller than the left and right width, and the straight portions on both the left and right sides are formed so that the substantially central portion is downwardly convex or bent. A side part 2f that is curved outward is formed substantially upright at the left and right ends of the bottom part 2e extending in the left-right direction with a downward slope toward the substantially central part, and is opposed to the bottom part 2e. The left and right sides of the top part are formed by connecting the left and right ends of the upper side part 2g, which has a substantially mountain shape extending in a slanting manner by a straight part having a predetermined gradient, respectively, to the upper ends of both side parts 2f.

The underdrain channel block of the present invention has a substantially flat cross-sectional shape of the internal channel, is substantially bilaterally symmetric, and its vertical height is smaller than the horizontal width, and its central portion is convexly curved downward. Alternatively, the left and right straight portions are inclined downward toward the central portion to form a convex bent shape, and the left and right ends of the bottom portion extending in the left-right direction are substantially upright on the left and right sides. The left and right ends of the top side are formed in a substantially mountain shape by extending straightly with a straight part with a predetermined gradient, and the left and right ends of the top part are formed to be continuous with the upper ends of the side parts respectively. Therefore, combined with the fact that the upper surface of the block is formed with a predetermined thickness between the upper surface of the water channel, it can withstand at least bending and shearing forces caused by external forces such as a wheel load applied to the upper surface. The whole is economical and the whole body is less wasteful. It can be a block having a valid cross-sectional shape (e.g. has a lower height than the width of cross-section a stable shape of the block). It can also contribute to the formation of road surface waterway facilities with a structure that is stable in strength and excellent in drainage.
For example, at intersections of roads, etc., formed by joining the waterway blocks embedded in the road so that the upper surface is exposed to the road surface along the road side and the pedestrian road boundary, etc. When the waterway for the side belt along the longitudinal direction of the road is obstructed by the road intersecting with this, the culvert type waterway block of the present invention is used without using a drain pipe with a large earth covering as in the conventional case. Therefore, it is possible to easily form a road surface waterway facility that crosses an intersection road in which the upper surface of a culvert type waterway block is buried from the road surface.

  An example of a waterway facility for road surfaces is shown, (A) is a plan view, (B) is a BB end view of (A), and (C) is an enlarged view of part C of (B).   (A) is a DD enlarged end view of FIG. 1 (a), (b) is an EE enlarged end view of FIG. 1 (a), and (c) is an FF enlarged end view of FIG. 1 (a). , (D) is a GG enlarged end view of FIG.   1 shows an example of a water channel block in the road surface water channel facility of FIG.   1 shows an example of a culvert type waterway block in the road surface channel facility of FIG. 1, (a) is a partially omitted front view, (b) is a partially omitted plan view, (c) is a side view, (d) is (a) JJ sectional drawing.   FIG. 1 shows an example of a relay channel block in the road channel facility of FIG. 1, (A) is a front view, (B) is a plan view, (C) is a left end view, (D) is a right end view, and (E) is ( KK sectional drawing of a). Explanatory view showing another example of a water channel of the cross-sectional shape of the dark culvert type water channel block.   (A) and (B) are plan views showing road surface channel facilities by using a culvert type waterway block, (C) is an LL enlarged sectional view of (B), and (D) is an upper surface shape of the culvert type waterway block. Sectional drawing which shows another example of other.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, prior to the description of the culvert type waterway block of the present invention, the culvert type waterway block forming the original (basic form) and a road surface waterway facility using the same will be described.
1A to 1C show an example of a road surface water channel facility, and A is a road surface water channel facility. As shown in FIG. 1A, the longitudinal direction of the road R (extends in the horizontal direction in the drawing). The water channel block 1 embedded in the road to form a side water channel along the road side of the road and the road R ′ (extending in the vertical direction in the drawing) intersecting with the road R in a T-shape is completely formed as a whole. The relay waterway block 3 buried in the road is interposed between the underdrain type waterway block 2 buried in the road and joined to each other. In this example, a plurality of culvert-type waterway blocks 2 are joined to cross the road R ′.

For example, as shown in FIGS. 3A to 3C, the water channel block 1 is a horizontally long block made of concrete having a circular water channel 1a having a circular cross section along the longitudinal direction. The bottom portion is substantially linear in the longitudinal direction, the upper surface 1b of the water channel block 1 is a gently inclined surface extending in the width direction perpendicular to the longitudinal direction, the upper surface 1b is exposed on the road surface, and is substantially flush with the road surface. It will be buried in the road.
In addition, the water channel block 1 is provided with flanges 1c projecting from the main body portion on both lower sides of the both longitudinal end surfaces thereof so as to be connected to other blocks by bolts at the time of construction. Bolt holes 1d are respectively provided in the flange 1c portion and the main body portion on the back side located on the diagonally diagonal line of the flange 1c.

For example, as shown in FIGS. 4A to 4D, the culvert-type water channel block 2 is a horizontally long block made of concrete having a water channel 2a along the longitudinal direction, and is a cross section of the water channel 2a. Is made into a substantially flat irregular shape having a substantially mountain-shaped upper part from the surface of flowability such as strength of the block and drainage capacity.
Specifically, the bottom part of the water channel 2a extends in a substantially straight line in the longitudinal direction like the bottom part of the water channel 1a of the water channel block 1, and the flow rate in the water channel 2a is substantially equal to the flow rate of the water channel 1a of the water channel block 1. (It is preferable that the flow rate at a predetermined water depth ratio (for example, 80% water depth) in the water channel 2a is substantially equal to the flow rate at a predetermined water depth ratio (for example, 80% water depth) in the water channel 1a of the water channel block 1). The cross-sectional shape of the water channel 2a is designed so that each predetermined water depth ratio is not necessarily constrained to this (the cross-section of the water channel 1a to be communicated is circular, so that the shape has a smooth outer shape to be adapted to this) It is preferable that the water channel 2a and the water channel 2a and the like be necessary in view of the necessity of maintaining a minimum strength against bending or shearing force due to an external force such as a wheel load applied to the upper surface 2b of the underdrain channel block 2. Cross-sectional shape of the underdrain type waterway block 2 is designed.

More specifically, as shown in FIGS. 4 (c) and 4 (d), the cross-sectional shape of the water channel 2a is substantially bilaterally symmetric, its vertical height is made smaller than the horizontal width, and its substantially central portion is In order to form a downwardly convex curve, the straight portions on both the left and right sides are inclined downward toward the center , and protruded outwardly at the left and right ends of a gentle substantially V-shaped bottom portion 2e extending in the left-right direction. The side part 2f that forms a shape is smoothly and substantially upright, and faces the bottom part 2e. Both the left and right sides of the rounded apex extend in a slanting manner by a straight part having a predetermined slope, and a gentle, generally mountain shape. By forming the left and right ends of the upper side 2g so as to be smoothly continuous with the upper ends of the side sides 2f, the flow rate and the minimum strength holding condition can be satisfied. 2 is an effective broth with less overall flesh (waste) It has been made with the click.

Further, when the upper surface 2b has a predetermined thickness between the upper surface of the water channel 2a and the bottom portion of the water channel 2a is aligned with the bottom of the water channel 1a of the water channel block 1 in the longitudinal direction, the upper surface 2b is It is formed lower than the upper surface 1b by a predetermined height.
That is, the upper surface 2b is formed by making the cross section of the water channel 2a into a substantially flat shape as described above in which the cross-sectional height of the water channel 1a is lower than that of the circular cross section of the water channel 1a and the height of the cross section is reduced. It can be formed lower than the upper surface 1b of the water channel block 1. As will be described later, the upper surface 1b is exposed on the road surface, and is connected to the water channel block 1 embedded in the road so as to be substantially flush with the road surface. When joining through the irrigation channel block 3, the culvert channel block 2 is positioned at a predetermined depth below the road surface (for example, the lower end position of the road pavement) without exposing the upper surface 2 b to the road surface r, Can be submerged in the road (see FIG. 1 (C) and FIG. 2 (D)).
In addition, in order to join the other blocks with bolts at the time of construction, recesses 2c (spaces for inserting bolts and nuts) extending from the bottom to the bottom are provided on both side walls in the vicinity of both end faces in the longitudinal direction of the culvert channel block 2. In addition, bolt holes 2d penetrating into the recesses 2c along the longitudinal direction are respectively provided in the lower portions of the both end surfaces.

For example, as shown in FIGS. 5A to 5E, the relay waterway block 3 is a horizontally long block made of concrete having a waterway 3a along the longitudinal direction, and the cross section of the waterway 3a has a cross section. A substantially flat irregular shape (water channel) having a circular shape similar to the cross section of the water channel 1a of the water channel block 1 at one end in the longitudinal direction and a substantially mountain-shaped upper portion similar to the cross section of the water channel 2a of the culvert type water channel block 2 at the other end. 2a is formed from a bottom side 3e, a side side 3f, and an upper side 3g), and is gradually deformed from one end to the other in the longitudinal direction.
The bottom of the water channel 3a is substantially linear in the longitudinal direction, similar to the bottoms of the water channels 1a and 2a of the water channel block 1 and the culvert type water channel block 2, and the flow rate in the water channel 3a is substantially the same as the flow rate of the water channels 1a and 2a. It is preferable that the flow rate at a predetermined water depth ratio (for example, 80% water depth) in the water channel 3a is substantially equal to the flow rate at the predetermined water depth ratio (for example, 80% water depth) in the water channels 1a, 2a. The cross-sectional shape of the water channel 3a is designed so that the respective predetermined water depth ratios are not necessarily constrained to this, and the upper portion of the water channel 3a is linearly directed from one end to the other in the longitudinal direction as shown by the broken line in FIG. While gradually descending, both sides of the water channel 3a are gradually expanded linearly from one end to the other in the longitudinal direction as indicated by broken lines in FIG. 5 (b), and the cross section of the water channel 3a is in the longitudinal direction as described above. From one circle to the other It is gradually deformed until the irregular shape.

Further, the upper surface 3b of the relay water channel block 3 is a gently inclined surface extending in the width direction orthogonal to the longitudinal direction in substantially the same manner as the upper surface 1b of the water channel block 1, and the bottom position of the water channel 3a is located at the bottom of the water channel 1a of the water channel block 1. When aligned with the bottom portion in the longitudinal direction, the upper surface 3 b is formed to be substantially the same height as the upper surface 1 b of the water channel block 1.
In addition, the relay water channel block 3 is provided with bolt holes 3d corresponding to the bolt holes 1d of the water channel block 1 on the diagonal line on one end surface in the longitudinal direction so that the water channel block 3 can be connected to other blocks by bolt connection. In addition, recesses 3c (spaces for inserting bolts and nuts) communicating with the bolt holes 3d are provided on both side walls in the vicinity of the one end surface, while the bolt holes 2d of the culvert channel block 2 are provided below the other end surface in the longitudinal direction. Corresponding bolt holes 3d are provided, and both side walls near the other end surface are provided with recesses 3c extending from the bottom to the bottom thereof and communicated with the bolt holes 3d.

Thus, as shown in FIG. 1 (a), the road surface channel facility A is a water channel embedded in the road with its upper surface 1b exposed on the road surface along the road side of the road R and substantially flush with the road surface. In the case where the side waterway formed by joining the blocks 1 is blocked by the road R ′ intersecting the road R, the waterway is formed to be continuous across the intersection road R ′.
That is, as shown in FIG. 1 (a), the relay waterway block 3 is arranged in the longitudinal direction of the waterway block 1 forming the side waterway, in front of the intersection road R ', and crosses continuously therewith. A culvert type waterway block 2 is arranged to cross the road R ′, and as shown in FIGS. 1 (b) and (c), the bottoms of the waterways 1a, 3a, 2a are aligned in the longitudinal direction to make the waterways 1a, 3a , 2a are connected to each other, and the relay waterway block 3 is exposed in the road surface r in the same manner as the waterway block 1, and is buried in the road so as to be substantially flush with the road surface r. The upper surface 2b is positioned below the road surface r without being exposed to the road surface r, and the entire surface including the upper surface 2b is submerged in the road (see FIG. 2 (d)) so as to cross the intersection road R ′ ( In this example, a plurality of culvert channel blocks 2 are joined in the longitudinal direction to form a road surface. While crossing the cross road R 'in a shallow position, not necessarily restricted thereto), and forms a road waterway facilities A in order to continuously waterways of the side band.

  Therefore, the road surface waterway facility A has the bottoms of the waterways 1a, 3a, 2a aligned in a straight line in the longitudinal direction, and joins the waterway block 1 and the underdrain type waterway block 2 via the relay waterway block 3, FIG. The water channel 1a having a circular cross section shown in (a) communicates with a water channel 2a having a substantially flat cross section shown in FIG. 2 (d) through a water channel 3a in which the cross section shown in FIGS. 2 (b) and 2 (c) gradually changes. Therefore, the upper surface 2b of the culvert-type water channel block 2 having the water channel 2a having a substantially flat cross section is formed lower than the upper surface 1b of the water channel block 1, and the upper surface 2b is exposed below the road surface r without being exposed from the road surface r. It is possible to place the entire culvert channel block 2 in the road and cross the crossing road R ′, and the flow rate in the water channels 1a, 3a, 2a is substantially the same, and steps are set in a series of water channels. Give rise to Since the continuously provided smoothly without, it is possible to rapid drainage without compromising the drainage capacity.

Note that the underwater channel block 2 has a cross section of the water channel 2a that is not necessarily limited to a substantially flat shape as in the above example, and the flow rate in the water channel 2a depends on a predetermined cross-sectional shape of the water channel 1a of the water channel block 1. The flow rate is substantially the same as the flow rate of the water channel 1a (preferably the flow rate at a predetermined water depth ratio in the water channel 2a is approximately equal to the flow rate at the predetermined water depth ratio in the water channel 1a), and against an external force such as a wheel load applied to the upper surface 2b. In consideration of strength, the bottom position of the water channel 2a may be aligned with the bottom of the water channel 1a so as to have a substantially flat shape lower than the cross-sectional height of the water channel 1a.
In short, it is sufficient that the cross section of the water channel 2a has a substantially flat shape so that the upper surface 2b can be formed lower than the upper surface 1b of the water channel block 1, and the cross section of the water channel 2a has at least the conditions of the flow rate and strength. What is necessary is just the substantially flat different shape which has various substantially mountain-shaped upper parts which satisfy | fill.

For example, the cross-sectional shape of the channel 2a is substantially the upper side portion 2g that forms the chevron shape, like descending diagonal steep compared with that of the right and left sides of the straight portions the example of top rounded as shown in FIG. 6, equal to the linear portions of the left and right sides of the top portion of another appropriate shape of its is Ru extends like descending oblique, with those of the embodiment is variously modified, except that the bottom portion 2e, also side portion 2f shown in FIG. 6, the length Saddle shape (the bottom side 2e is a point where the central part extends downward in the left-right direction so that the linear part on both the left and right sides is inclined downward toward the central part so as to form a convex curve or a convex bent toward the lower side, the side part 2f Can be changed to a substantially flat shape having various substantially mountain-shaped upper portions by appropriately changing the shape of the substantially upright shape that is curved outward . The cross-sectional shape of the water channel 2a is preferably substantially symmetrical from the viewpoint of the structure.

The overall cross-sectional shape of the underdrain channel block 2 also has sufficient strength against an external force such as a wheel load applied to at least the upper surface 2b, and the bottom position of the channel 2a is in the longitudinal direction with the bottom of the channel 1a of the channel block 1 The upper surface 2b may be formed to be lower than the upper surface 1b of the water channel block 1 by a predetermined height (for the depth embedded under the road surface of the upper surface 2b). Can be changed.
Further, the length of the culvert channel block 2 in the longitudinal direction may be an appropriate length that retains the sufficient strength, and the shape and structure of the joint portion with the other blocks are not restricted to those in the above example, It may be changed as appropriate.

Here, the culvert type waterway block of the present invention will be described.
The culvert type waterway block 2 may be used independently of the waterway block 1 and the relay waterway block 3, and the culvert type waterway block 2 that is used independently is the culvert type waterway block of the present invention. In this way, the cross-sectional shape of the substantially flat shape of the water channel 2a is substantially bilaterally symmetric, its vertical height is made smaller than the horizontal width, and the bottom portion 2e (substantially central portion protrudes downward) extending in the horizontal direction. The side portions 2f (curve outward) are formed at the left and right ends of the straight line portions on both the left and right sides to form a slanting shape toward the center and extend in the left- right direction to form a curved or convex bent shape. The left and right ends of the upper side 2g, which is continuous in an upright shape and extends substantially in a hill shape with the straight part of the top part inclined downwardly with a straight part having a predetermined slope, opposite to the base part 2e, are the upper ends of the side parts 2f. Each was formed continuously, and originally Serial need be diverted directly supplied for the formation of road canal facilities A.
For example, as shown in FIGS. 7 (a) and 7 (b), in the roads R and R 'intersecting each other in substantially the same manner as in FIG. 1, a plurality of culvert channel blocks 2 joined across the intersecting road R' are formed. In addition, instead of the water channel block 1 and the relay water channel block 3, a culvert type water channel block 2 can be continuously joined along the road side of the road R. In this case, the culvert type water channel block 2 is shown in FIG. As shown in FIG. 2 (d), the whole may be submerged in the road, and various street constructions (not shown) may be constructed on the upper side, and in some cases, FIG. 7 (b) and (c) The upper surface 2b may be exposed to the road surface r as shown in FIG. Further, the upper surface 2b is not limited to the intersection of the road and may be used independently in various other places, and the upper surface 2b is an inclined surface that is inclined downward from both ends in the width direction to the substantially central portion as shown in FIG. In addition, the inclined surface extending in the width direction can be appropriately changed according to the installation location. In addition, when the underdrain channel block 2 is used independently as described above, the flow rate at a predetermined water depth ratio in the channel 2a may be appropriately determined without being constrained by the channel block 1.

In forming the road surface channel facility A, the bottoms of the water channels 1a, 3a, 2a are aligned substantially linearly in the longitudinal direction as described above, and the upper surface 2b of the culvert type water channel block 2 is more than the upper surface 1b of the water channel block 1. It may be formed lower by a predetermined height so that the entire culvert type waterway block 2 including its upper surface 2b can be submerged in the road, and the road surface configuration, safety and landscape are not impaired by simplifying the road surface configuration.
In addition, the road surface canal facility A is not limited to the intersection of the road, but is constructed in various other places required for road function, safety, landscape and other aspects. Of course, both sides of the culvert channel block 2 are joined to the channel block 1 via the relay channel block 3 in the above example, but one side of the culvert channel block 2 is used as necessary. Only the water channel block 1 may be connected to the water channel block 1, and the other side may be directly joined to another water channel facility or the like without the relay water channel block 3.

A Road surface channel facilities 1 Channel blocks 1a, 2a, 3a Channels 1b, 2b, 3b Top surface 2 Underdrain channel blocks 2e, 3e Bottom side 2f, 3f Side sides 2g, 3g Top side 3 Relay channel block R, R 'Road r Road surface

Claims (1)

A cross-sectional shape having a water channel (2a) along the longitudinal direction inside, and having an upper surface (2b) having a predetermined thickness between the upper surface of the water channel (2a) and a substantially flat shape of the water channel (2a) However, it is substantially symmetrical and its vertical height is smaller than the left and right width, and the straight parts on both the left and right sides are inclined downwards to the substantially central part so that the central part is convexly curved or convexly bent downward. The side portion (2f) that is curved outward is formed substantially upright at both left and right ends of the bottom portion (2e) extending in the left-right direction, and is opposed to the bottom portion (2e), An underwater channel block formed by connecting the left and right ends of the upper side portion (2g), which has a substantially mountain shape extending straightly from a straight portion with a predetermined slope on both left and right sides, respectively, to the upper ends of both side portions (2f). .

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