JP6163387B2 - Free-gradient gutter and its construction method - Google Patents

Description

  The present invention relates to a free-gradient side groove that is useful for forming a predetermined water channel gradient and smoothly collecting and draining rainwater and the like, and a construction method thereof.

  A gutter block is arranged between the road (roadway) and the sidewalk, and this gutter block is usually made of concrete or the like, the upper part of the block main body has an opening and a drainage channel, and the opening of the block main body. And a lid body covering the. In addition, rain water is collected and guided to the drainage channel of the block body using a slit-like inlet formed in the lid and an inlet formed between the block body and the lid. Such a gutter block is also arranged on a flat road having almost no road gradient, or an inclined road that needs to be drained by descending against an uphill gradient such as a slope.

  In order to form such a water channel gradient, a gate-type side groove block is laid on the base, and adjusted concrete is cast at a predetermined thickness at the bottom between the pair of side walls to form a predetermined gradient. For example, a gate-type gutter body that has both side walls, the bottom is fully open, and an opening is provided in the center of the top ceiling wall is installed on the foundation, and invert concrete is cast on the bottom that opens from the top opening. It is installed to form a channel gradient. Japanese Patent Application Laid-Open No. 2006-77556 (Patent Document 1) relates to a gate-type (gate-type) side gutter main body and, when the bottom concrete is formed in advance of a predetermined gradient, the side walls and the side walls of the bottom concrete. When the side wall block body is installed at the same time as the side wall block body and mortar is filled, and the bottom concrete is cast afterwards, the top concrete is opened and the bottom concrete is placed to finish the bottom to a predetermined slope. Is described.

  However, in the gate-shaped side groove main body, since it is necessary to support both side walls firmly and firmly by the foundation part, construction cannot be performed until the foundation concrete is hardened. Also, when concrete is cast afterwards, the side groove main body is installed on the foundation, and after placing the invert concrete from the top opening of the side groove main body, the concrete surface of the placed bottom is placed from the top opening to a predetermined channel gradient. It is necessary to perform the molding operation. Therefore, not only the construction period is lengthened, but also workability and workability for placing and forming the gradient are greatly reduced. Furthermore, in the method of Patent Document 1, it is necessary to fill the gap between the side wall of the bottom concrete and the inner wall of the side wall, which complicates the laying work. In addition, although the upper opening of the side groove body is covered with a lid, rattling occurs due to running of the vehicle, and noise is generated.

  On the other hand, a method of forming a predetermined gradient by arranging a side groove block having a U-shaped cross section or a U-shaped cross section and placing concrete on the bottom surface of the side groove block is also known. In Japanese Patent Application Laid-Open No. 2004-270293 (Patent Document 2), invert concrete that forms a required running water gradient by integrally forming a U-shaped side groove main body composed of left and right side wall plates and a bottom wall plate with reinforced concrete is used as a bottom. The upper surface of the left and right side wall slabs is molded with or joined to the upper side of the left and right side wall plates, and the invert concrete and the cover plate are attached to the side groove body. A production method of a side-grooved product with a variable gradient type lid that is cured in a state is disclosed, and it is also described that a concave portion is formed in the middle portion of the upper surface of the bottom wall plate and this concave portion is filled with invert concrete. However, in this method, it is necessary to cast concrete from the upper opening of the side groove block and to form a gradient on the bottom surface of the side groove block through the upper opening, and as described above, work efficiency and workability are large. descend. In addition, rattling and loss of the lid occur as the vehicle passes, causing noise.

JP 2006-77556 A (paragraphs [0010] to [0012], FIGS. 1 to 4) JP 2004-270293 A (Claims)

  Accordingly, it is an object of the present invention to provide a side groove having a side groove block that can easily form a bottom surface having a predetermined gradient, improve workability, and greatly reduce the work period, and a method for constructing the side groove. .

  Another object of the present invention is to provide a side groove and a side groove construction method capable of improving workability or laying workability without using a complicated structure.

  Still another object of the present invention is to provide a side groove that can form a slit-shaped water collection channel (or inflow channel) along the longitudinal direction and improve water collection efficiency, and a method for constructing the side groove.

  As a result of intensive studies to achieve the above-mentioned problems, the inventors have formed an open portion along the longitudinal direction by making one side wall of a box-shaped (e.g., U-shaped cross-section) side groove block detachable. It is not only easy to place concrete in the side groove block, but also the cast concrete surface can be easily formed flat or with a predetermined gradient, and the workability can be greatly improved, and the concrete and mortar of the foundation The present invention has been completed by finding that the bottom wall can be stably installed even if the vehicle is uncured and that the lid is integrated with the side groove block so that no noise is generated even when the vehicle is driven.

  That is, the side groove of the present invention is a side groove that includes a bottom wall, both side walls, and a top wall, and is formed with an inflow opening that leads to a drainage channel formed by the both side walls and the bottom wall. Is provided with a side groove block that is open and a side wall that is detachable from the open side wall portion (open portion). In such a side groove, the side wall portion can be opened, and therefore, this open portion can be used to cast invert concrete to form a predetermined gradient. Moreover, after shaping | molding the concrete on a bottom wall to a predetermined gradient, a side groove can be formed by plugging an open part with a side wall.

  The side groove of the present invention has a form including both side walls extending from both sides of the bottom wall and a top wall formed across the side walls, and the top wall is integrated with the side wall. It corresponds to a lid (a lid that is not removable). In such a side groove, one side wall (side wall part) may be detachable. That is, the side groove is formed in the bottom wall, the first side wall located on one side of the bottom wall, the side groove block formed integrally with the top wall, and the other side of the bottom wall. And a second side wall detachable from the bottom wall and the top wall. The side groove block may have a box shape (for example, a U-shaped cross section or a U shape) in which the other side portion is open. In addition, the planar shape of the side groove block may be a linear shape or a curved or bent shape depending on the construction site.

  The attachment / detachment form of the second side wall is not particularly limited. For example, the second side wall and the second side wall lower part are formed with a predetermined length or continuous with a distance in the longitudinal direction. You may fit or engage so that attachment or detachment is possible in a joint part or an engaging part. Further, the other side portion of the bottom wall and the lower portion of the second side wall may be detachably engaged by a notch step portion that can be engaged with each other. Further, the upper end surface of the second side wall may be formed flush with the top wall, and the second side wall is attached to at least one portion of the notch step portion of the bottom wall and the side end surface of the top wall. (A fastening member or the like) may be attached.

  Furthermore, the inlet may be formed in the upper part of the side groove. For example, an inlet (such as a slit-like inlet) leading to the drainage channel may be formed between the top wall or the top wall and the second side wall. Good. Furthermore, since the upper end surface of the top wall collects water toward the inlet, it may be lowered and inclined toward the inlet. For example, the upper end surface of the top wall may be lowered with a predetermined gradient from the first side wall toward the second side wall.

  In the construction method of the present invention, the side groove block is arranged adjacent to a predetermined part (construction part) in a form in which at least one side wall part is opened, and invert concrete (or adjustment concrete) is applied from the open part of the side groove block. The side groove can be constructed by forming and forming a predetermined gradient and closing the open portion of the side groove block with the second side wall. In this method, the side groove blocks are arranged adjacent to each other with the second side wall open; invert concrete (or adjusting concrete) is cast from the open side portion of the side groove blocks and formed into a predetermined gradient; The side groove may be constructed by mounting the second side wall on the bottom wall and the top wall of the side groove block. This method is useful for placing invert concrete (or adjusting concrete) from the open part of the side groove block, forming the bottom surface into a predetermined gradient, and forming a free gradient side groove.

  In this specification, the “gradient” of the drainage channel is not limited as long as the drainage channel formed by a plurality of side grooves has a predetermined gradient as a whole, and there is a flat portion or the like in a part of the entire drainage channel. It means you may.

  In this invention, since one side wall part can be open | released, while being able to improve the placement operation | work of the concrete in a side groove block, the bottom face of the placed concrete can be easily formed in a predetermined gradient. Therefore, the workability can be greatly improved. Further, even if the concrete or mortar is uncured, the bottom wall can be brought into surface contact with the foundation and stably installed, and the workability and construction period can be greatly shortened. Furthermore, it is possible to improve the workability or laying workability with a simple structure in which one side wall can be attached and detached without using a complicated structure, and the manufacturing cost and the construction cost of the side groove can also be reduced. Furthermore, a slit-shaped water collection channel (or inflow channel) can be formed along the longitudinal direction only by attaching a side wall to the gutter block, and water collection efficiency can be improved.

FIG. 1 is a schematic perspective view showing an example of a side groove of the present invention. 2 is a cross-sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is a schematic perspective view showing a construction state of the side groove of FIG. FIG. 5 is a schematic longitudinal sectional view showing a construction state of the side groove of FIG. FIG. 6 is a schematic cross-sectional view showing a construction state of the side groove in FIG. It is a schematic sectional drawing which shows the other example of the side groove | channel of this invention. It is a schematic sectional drawing which shows the other example of the side groove | channel of this invention.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 to 3 are drawings showing an example of a side groove of the present invention, and this side groove includes a side groove block 1 and a side wall 11 for closing or closing one open side portion of the side groove block. .

The side groove block 1 has a box-like (U-shaped cross-section) shape in which the other side is open, a bottom wall (bottom plate portion) 2 having a flat bottom surface, and one side portion of the bottom wall. a first side wall 3 positioned, and the side wall of the upper portion from being formed to extend in the direction of the side wall of the other side the top wall (top plate portion or top wall) 4 is formed integrally with the. That is, unlike the conventional lid, the top wall 4 is not removable.

  A second side wall 11 can be attached to and detached from the bottom wall 2 and the top wall 4 on the other side of the bottom wall 2. In this example, the other side (inside) of the bottom wall 2 is formed with a ridge 5 (or a cutout portion of the outer wall, a protruding wall) 5 extending in the longitudinal direction, and a lower portion (inside) of the second side wall 11. A notch recess 12 that can be locked to the ridge 5 is formed along the longitudinal direction, and the notch step portion that can be engaged with each other is formed by the ridge 5 and the notch recess 12. The second side wall 11 can be attached to and detached from the bottom wall 2 and the top wall 4 by using the notched step portions 5 and 12. A drainage channel 6 is formed by the bottom wall 2, the first side wall 3, and the second side wall 11.

  Further, the second side wall 11 is attached to the convex strip 5 of the bottom wall 2 and the side end surface of the top wall 4 by a fastening member (screwing mechanism). That is, in the ridges 5 and the top wall 4, hollow inserts 13 a and 13 b are embedded at intervals in the longitudinal direction, and holes formed in the second side wall 11 are formed in the hollow portions of the inserts. Screw portions of the bolt members 14a and 14b are screwed through a portion (not shown). Therefore, in a state where the protrusion 5 and the notch recess 12 are engaged and mounted, the bolt members 14a and 14b are inserted into the holes of the second side wall 11 and screwed into the inserts 13a and 13b. The second side wall 11 can be attached to or attached to the lower wall 2 and the top wall 4 by screwing the nuts 15a and 15b to the bolt member. In this example, the upper portion of the second side wall 11 is cut out in the longitudinal direction, and a nut 15b is screwed into the screw portion of the bolt member 14b on the side end surface of the top wall 4 at this notch (notch step). Is possible.

Furthermore, the upper end surface of the top wall 4 descends at a predetermined gradient θ as it goes from the first side wall 3 to the second side wall 11 , and the flowing water is directed toward the second side wall 11 by the lowered inclined surface. I am guiding you. In this example, the gradient θ of the upper end surface (inclined surface) is inclined according to the gradient of the road surface. The upper end surface of the second side wall 11 is formed flush with the top wall 4.

  Between the top wall 4 and the second side wall 11, a slit-shaped inlet 21 a leading to the drainage channel 6 is formed. In this example, the side end portion of the top wall 4 is cut out at a predetermined length with a predetermined interval, and a slit-like inlet 21 a is formed between the inner wall of the second side wall 11.

  Such a side groove forms a free-gradient side groove made of precast concrete in which an insert is embedded, and is arranged adjacent to each other at a construction site (predetermined site). 4 to 6 show the construction state of the gutter in FIG. 1, which is arranged on an uphill road and forms a waterway gradient in the reverse direction. That is, the foundation is formed in advance by foundation work (for example, laying the foundation crushed stone 22 and placing the mortar 23), and the foundation has a plurality of different heights in a form in which the second side wall is opened. Side groove blocks 1a, 1b,... 1e are arranged or installed adjacent to each other on an uphill road (in the figure, an uphill slope).

  Concrete 24 is placed on the bottom wall 2 from the open side portions of the side groove blocks 1a to 1e. The cast concrete surface is formed into a predetermined gradient that descends as it goes in the upward gradient direction (upstream direction) of the road, and a bottom surface (slope) with a predetermined gradient is formed on the bottom wall 2 of the side groove blocks 1a to 1e. Form. Next, as described above, the second side wall 11 is attached to the bottom wall 2 and the top wall 4 of the side groove blocks 1a to 1e, and the side wall is formed by closing the open side portion with the second side wall 11. it can. In addition, a boundary block (curbstone) 25a for partitioning the sidewalk and the roadway is disposed in the upper cutout portion (step portion) of the second side wall 11.

  In such a side groove, even when the mortar 23 is in an uncured state, the bottom wall 2 can be placed in surface contact with the mortar 23 and stably installed. For this reason, the workability can be improved and the curing period can be greatly shortened without requiring a curing period. Further, a plurality of gutter blocks 1a, 1b,... 1e can be placed or installed on the foundation of the upward slope, and the concrete 24 can be placed in a state in which the second wide side wall 11 is removed. 24 can be controlled from flowing out to the outside, and the concrete 24 surface (the bottom surface of the drainage channel) can be formed into a predetermined gradient by utilizing a wide side space. Therefore, work and construction efficiency can be greatly improved, and a descending waterway gradient (inclined road) can be formed with high accuracy even when the gradient is uphill. Further, the top wall 4 has a structure integrated with the side wall 3 and the bottom wall 2, and the upper end surface of the second side wall 11 is formed flush with the upper end surface of the top wall 4. There is no rattling or loss even when traveling, and it can be safely passed or traveled. Moreover, since the inflow port 21a is slit shape, it can pass and drive | work safely and smoothly. In addition, since the upper end surface of the top wall 4 is inclined in a predetermined direction and water can be collected while preventing the diffusion of rain water by the boundary block (curbstone) 25a, the rain water is slit along the inclined upper end surface of the top wall 4 It can guide to the inflow port 21a and can smoothly drain through the drainage channel 6. Furthermore, since the upper end surface (the end portion of the roadway) of the top wall 4 is inclined at a predetermined gradient θ corresponding to the inclination angle of the roadway, it is possible to prevent a bicycle or a single vehicle traveling on the upper end surface of the top wall 4 from slipping. At the same time, it is possible to prevent a water pool from forming on the upper end surface of the top wall 4, and to prevent water splashing due to traveling of the vehicle. Further, in a side groove using a low boundary block as the boundary block 25a, even a wheelchair or the like can smoothly move from the sidewalk to the roadway.

  The side groove according to the present invention includes a bottom wall, both side walls, and a top wall (a mode including both side walls extending from both sides of the bottom wall and a top wall formed across the both side walls). have. The side groove block constituting the side groove only needs to have at least one side wall portion opened, and one side wall and the top wall may be openable. FIG. 7 is a schematic sectional view showing another example of the present invention. In addition, the same code | symbol is attached | subjected and demonstrated to the element same as the said FIGS.

  In this example, the side groove block 31 includes a bottom wall 2 formed in an L-shaped cross section and one side wall 3, and an upper end surface of the one side wall is an inclined surface (inwardly inclined) ( An inclined receiving surface 33 is formed. Moreover, the other side wall 11 is provided with the notch recessed part 12 which can be engaged with the protruding item | line 5 of the bottom wall 2 similarly to the above. The top wall 34 has an inclined surface 35 corresponding to the inclined surface (inclined receiving surface) 33 of the one side wall 3, and the inclined surface (inclined receiving surface) 33 of the one side wall 3 and the top wall 34. In order to form the inlet 21b in the form of a through hole, at least one surface of the inclined surface 35 is formed with a spacer portion (a convex portion or a convex portion extending in a direction perpendicular to the longitudinal direction). A slit-like inlet 21a is formed between the other end face of the top wall 34 and the other side wall 11 in the same manner as described above.

In such a side groove, the top wall 34 and the other side wall 11 can be opened, so that the concrete placement work and the gradient forming work on the bottom wall 2 of the side groove block 31 can be performed efficiently. Further, similarly to the above, water can be efficiently collected by the slit-shaped inlet 21a and the boundary block 25b and drained into the drainage channel. Furthermore, if the paved permeable layer 42 on the waterproofing layer 41 for regulating the permeation of water to form a road, by arranging the gutter inlets 21b to face the water-permeable layer 42, water-permeable layer The permeated water that permeates 42 can also be drained into the drainage channel.

  In addition, the inflow port 21b may form a plurality of through holes formed at predetermined intervals or scattered. Further, one end portion of the top wall 34 does not need to be supported by the inclined surface (inclined receiving surface) 33 of the one side wall 3, and may be supported by a flat surface of the one side wall 3, a notch step portion, or the like. .

  In the side groove in which the top wall (upper wall) can be opened, noise may be generated due to traffic and running, and the top wall may be lost. Therefore, it is preferable that the top wall corresponding to the lid is integrated with the side wall. That is, the bottom wall, the first side wall located on one side of the bottom wall, and the top wall are preferably integrally formed, and such a side groove block is usually precast concrete. It is made. As shown in FIGS. 1 to 4, such a side groove block has a box-like form with the other side opened. The cross-sectional shape of such a side groove block is not particularly limited, but is usually a U-shaped or U-shaped form with the side portions open, and the corner portion of the inner wall surface is rounded or inclined. A haunch part (thickening part) may be formed. In particular, in order to stably install the side groove on the foundation (including mortar, etc.), the bottom surface of the bottom wall may have an uneven portion, but it is preferable that at least surface contact with the foundation is possible. It is preferable that the surface is flat (for example, a flat surface that may have a convex portion or a ridge portion).

  The side groove includes a second side wall that can be attached to and detached from the bottom wall and the top wall in order to close an open portion of the other side wall of the bottom wall. The second side wall may have a narrow shape (a shape with a small height) depending on the form of the open portion, but is wide (high) in terms of concrete placing work and gradient forming work. Is often wide enough to form the other side wall (especially the entire side wall) of the side groove. The second side wall is preferably openable at least at the upper part of the other side wall (for example, 50% or more, preferably about 70 to 100%, more preferably about 80 to 100% of the height of the side wall). . Furthermore, in order to regulate the outflow of the placed concrete, it is preferable to form a regulating portion (or a regulating wall extending in the longitudinal direction) such as the above-mentioned ridges on the bottom wall.

  If necessary, a plurality of open portions may be formed at intervals in the longitudinal direction of a single side groove block. However, the open portion of the side groove block is usually opened by the side wall portion of the single side groove block. It has the form (open | released along the longitudinal direction) made. The opening portion of the side groove block only needs to be closed by a closing member [second side wall (and top wall if necessary)]. Usually, the closing member (second side wall) can be attached to the opening portion. . This attachment mechanism is not particularly limited, and an engagement or engagement mechanism, a fitting mechanism, or the like can be used. Usually, a fitting or engagement mechanism in which a closing member (second side wall) is slidable in the longitudinal direction [for example, closing] The end direction of the member (for example, the second side wall upper part and / or the lower part) and the slide mechanism by the ridge and the groove formed on the corresponding part of the wall part adjacent to the closing member], the width direction of the closing member In many cases, it is a fitting or engagement mechanism (for example, concave-convex fitting by a concave-convex portion formed at the opposing portion, engagement by a step portion formed at a corresponding portion, etc.) accompanying the movement to the.

The second side wall (blocking member) is attached to the bottom wall and the top wall of the side groove block with a predetermined length between the other side of the bottom wall and the lower portion of the second side wall. The second side wall can be detachably fitted or engaged with each other by using a fitting part or an engaging part formed continuously or continuously. When groove block and the second side wall is considered to be made rigid concrete, slidable fit or engagement mechanism in the longitudinal direction, to utilize the fitting or engaging mechanism associated with the movement in the width direction It is advantageous. For example, the other side portion of the bottom wall and the lower portion of the second side wall may be detachably engaged by a notch step portion that can be engaged with each other. In this case, when the notched step portions (the protruding ridges or the protruding ridge portions and the notched recess portions) are formed, the outflow of the cast concrete can be restricted by the protruding ridges or the protruding ridge portions (regulating portions) of the step portions as described above. . The ridge (or restricting portion) may be formed not only on the inside of the other side of the bottom wall but on the outside, but when the ridge is formed on the outside, the cast concrete is attached to the second side wall. There is a possibility of flowing to the part. Therefore, it is advantageous to form the ridge (or restricting portion) on the inner side (drainage side) of the other side portion of the bottom wall.

  As long as the closing member can be attached to the opening portion, the attachment means is not necessarily required. However, in order to attach the closing member tightly and firmly to the attachment portion of the opening portion, use the attachment means. Is preferred. In particular, it is preferable that the second side wall is attached by using attachment means in order to attach it stably. The type of the attaching means is not particularly limited, and is usually a fastening member, for example, a screw member that can be screwed to an insert (tubular body (non-corrosive cylindrical body)) embedded in a predetermined portion of the wall portion; It can comprise with the screwing member which can be screwed with respect to the thread part of this screw member. In addition, without embedding the insert, the screw member (for example, the head of the screw rod) may be embedded in a predetermined portion of the wall portion in a form in which the screw portion is extended. It is preferable to embed an insert in which a member can be screwed in a predetermined portion. Further, in place of the hole portion of the second side wall through which the screw member can be inserted, the screw member is guided to the insert and screwed into the second side wall, so that the shaft portion of the screw member can pass therethrough. You may form a notch guide part, for example, the notch guide part extended in the vertical direction (or notched) and reaching the site | part of an insert. Further, the attachment site can be selected according to the form of the mounting portion of the opening portion and the closing member, for example, the notch step portion (engagement step portion, ridge wall, etc.) of the bottom wall and the side end surface of the top wall. The at least one site | part may be sufficient. In many cases, the second side wall is attached to at least a notch step (engagement step, ridge wall, etc.) of the bottom wall. In other words, depending on the application site of the gutter block (for example, the irrigation channel), the attachment means (fastening member or the like) for attaching the side wall (second side wall or closing member) to the top wall is not necessarily required.

  The end of the top wall may be supported by the second side wall. FIG. 8 is a schematic sectional view showing still another example of the present invention. In this example, a support step portion 11a is formed inside the upper end portion of the second side wall 11 to form a support step portion 11a, and the end portion of the top wall 4 is placed and supported on the support step portion. . On the other hand, the end portion of the top wall 4 is cut away at an interval in the longitudinal direction to form a slit-shaped inlet 21c.

  Even in such a side groove, the workability can be greatly improved as described above, and the channel gradient can be formed easily and accurately.

  The planar shape of the side groove may be a straight shape, a curved shape, or a bent shape according to the form of the construction site, and one side groove may include a straight portion and a curved or bent portion.

  The side groove may be formed with an inflow leading to a drainage channel formed by the both side walls and the bottom wall, and the inflow may be formed at an upper portion of the top wall and / or the side wall. It may be in the form of a hole (also a slit-like through hole). In a preferred form, the inlet is formed between adjacent walls, for example, between the top wall and the second side wall (particularly on the sidewalk side). The inflow ports may be regularly or irregularly scattered in the longitudinal direction, but are preferably slit-like in order to improve water collection efficiency. The inflow port is often formed along or extending along the longitudinal direction. In particular, if a slit-shaped water collection channel is opened along the height of the road surface, the crossing gradient of the automobile lane can be constructed to match the gradient of the roadway (inclination in the width direction) on the shoulder, and the step (barrier) and gradient difference can be reduced. Can be resolved. Therefore, unlike conventional construction, there is no water pool due to a step (barrier) or gradient difference, and it is possible to prevent water splashing by the vehicle, and a gradient fold (gradient difference) occurs between the roadway and the side road (street apron). There is nothing.

  Furthermore, although the upper end surface of a top wall may be a flat surface, in order to improve water collection efficiency, it is preferable that it falls and inclines toward a water collection port. For example, it is preferable that the upper end surface of the top wall descends with a predetermined gradient and inclines as it goes from the first side wall (the roadway side) to the second side wall (the sidewalk side). The slope θ of the upper end surface (inclined surface) can be selected appropriately, and may be different from the slope gradient in the road width direction (transverse direction) (the slope θ may be smaller than the slope gradient in the road width direction). In general, it is preferable to form a continuous inclined surface corresponding to the gradient in the width direction of the road. The gradient θ may be, for example, 1 to 10 °, preferably 1 to 5 °, particularly about 1 to 3 °.

  The upper end surface of the second side wall on the sidewalk side may be formed with a slope different from that of the top wall, but is preferably formed flush with the top wall in order to guide rainwater to the inflow port. In addition, in order to guide rainwater to an inflow port as needed, you may form a control wall in the outer side of an inflow port in the upper end surface of a 2nd side wall.

  In the gutter, a boundary block (boundary member) is usually arranged at the boundary between the roadway and the sidewalk, and the form of this boundary block is not particularly limited, and has a head (curbstone) to restrict entry of the vehicle. It may be a restriction block, or a entrance block having a gentle slope. It is not always necessary to form a stepped portion (notch) for arranging the boundary block (boundary member) in the side groove.

  If necessary, in the side groove, a gap other than the inlet may be filled with a joint or may be sealed with a sealant. In particular, when a closing member is fastened by a corroding member and a corroded part, for example, a screw member and a screwing member, the screwing part of the screw member and the screwing member may be sealed with a sealant together with the screw member. Good.

  In the present invention, since at least the side wall can be opened, the construction efficiency of the side groove can be greatly improved. In addition, since the bottom wall can be installed in surface contact with the foundation, construction is easy, and construction can be performed even if the concrete and mortar of the foundation are uncured, and the construction period can be greatly shortened. In the above example, a waterway gradient that descends with respect to the upward gradient of the road is formed, but the gutter may be constructed on a flat road (or foundation) or a lowered road (or foundation). . By placing or placing a plurality of side grooves adjacent to each other and using the open side, the cast concrete or mortar is molded to a predetermined gradient, thereby accurately forming a water channel (bottom surface) inclined in a predetermined direction. it can. Therefore, it is suitable not only for road gradients (inclination gradients) such as slopes, but also for forming free gradient side grooves that can change the channel gradient on flat foundations. The base portion can be formed by a conventional method such as crushed stone or gravel laying or mortar placing.

  The height of the side groove can be selected according to the gradient of the construction site (inclined or flat road), and it may be constructed using a plurality of side grooves of different heights in sequence, or a plurality of side grooves having the same height are used. May be installed. The former is often constructed on ramps. In addition, the gradient of the waterway gradient is not particularly limited, and can be selected according to the construction site.

  In addition, the adhesiveness of the bottom wall of a gutter block and placement concrete may fall. In such a case, in order to improve the locking property or anchoring property with the cast concrete, the lower part of the gutter block (bottom wall, etc.) is formed with uneven parts, inserted protruding members (pits, rods, etc.), etc. May be. As means for improving such adhesion, for example, JP 2012-241507 A, JP 2013-68063 A, JP 2013-11152 A, and the like can be referred to.

  The gutter of the present invention can be applied to various roads with high workability. In particular, since a water channel gradient can be formed in a predetermined direction even on an inclined road or a flat road using a plurality of side groove blocks, it is suitable for forming a free gradient side groove.

DESCRIPTION OF SYMBOLS 1 ... Gutter block 2 ... Bottom wall 3 ... 1st side wall 4 ... Top wall 5 ... Convex strip 6 ... Drainage channel 11 ... 2nd side wall 12 ... Notch recessed part 21a, 21b, 21c ... Slit-like inflow port

Claims (7)

A side groove having a bottom wall, both side walls, and a top wall, and having an inflow opening leading to a drainage channel formed by the both side walls and the bottom wall, the bottom wall and at one side of the bottom wall A side groove block formed integrally with the first side wall and the top wall; and a second side wall detachable from the bottom wall and the top wall on the other side of the bottom wall. A free-gradient side groove in which the second side wall is attached to the side groove block with a fastening member . Gutter block, free slope gutter according to claim 1 Symbol placing the other side has an open box-like shape. The other side portion of the bottom wall and the lower portion of the second side wall are detachably fitted or engaged with a fitting portion or engagement portion formed at a predetermined length or continuously with a distance in the longitudinal direction. The free-gradient side groove according to claim 1 or 2 . The other side of the bottom wall and the lower portion of the second side wall are detachably engaged with each other by a notch step that can be engaged with each other, and the second side wall has an upper end surface that is flush with the top wall. The free side gradient according to any one of claims 1 to 3 , wherein the second side wall is attached to at least one of the notch step portion of the bottom wall and the side end surface of the top wall with a fastening member. Gutter. The free-gradient side groove according to any one of claims 1 to 4, wherein a slit-like inlet leading to a drainage channel is formed between the top wall and the second side wall. The free-gradient side groove according to any one of claims 1 to 5 , wherein an upper end surface of the top wall descends with a predetermined gradient from the first side wall toward the second side wall. The side groove block according to any one of claims 1 to 6 is disposed adjacent to the construction site in a form in which the second side wall is opened, and concrete is cast from the open portion of the side groove block and formed into a predetermined gradient. The second side wall is attached to the bottom wall and the top wall of the side groove block, and the second side wall is attached to the side groove block with a fastening member to construct the free gradient side groove.

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