Integrated open curb with diversion trench
Technical Field
The invention relates to a curb, in particular to an integrated open curb with a diversion trench, and belongs to the technical field of rainwater treatment.
Background
In sponge city construction, low influence development urban roads are widely applied, namely, open type curbs are arranged between roads and green belts, and road rainwater runoff is converged into surrounding green lands to be regulated, stored and purified. At present, the methods for developing the opening of the road kerb in low influence in engineering mainly comprise the following steps: (1) the single curb opening, this kind of mode curb opening receives road cross slope, longitudinal gradient, side ditch etc. to influence great to the entrapment rate of road rainfall runoff, and especially when the road longitudinal gradient is greater than the cross slope, the curb opening is lower to road rainfall runoff entrapment rate, can't satisfy the engineering design requirement. (2) Curb opening and road change slope combination owing to set up the road change slope before the curb opening, increased the opening front runoff depth of water, consequently improved the curb opening to road rainwater runoff hold back efficiency, but this kind of mode road construction is loaded down with trivial details to the slope of road change slope is difficult to control, and has driving safety hidden danger. Aiming at the problems existing in the engineering application, the invention provides an integrated open curb device with a diversion trench and a concave-down reinforced water-collecting type rainwater grate, which can realize the efficient interception of rainwater runoff on a road, is convenient for construction and installation and can not cause traffic safety hidden trouble.
At present, the method for developing the road curb opening with low influence has received wide attention, and the published relevant patents are as follows: chinese patent publication CN 108589466A' A curb opening drainage device for intercepting initial rainwater, the patent sets a drainage groove around the periphery of a gutter inlet, the gutter inlet is connected with a curb opening downwards along the longitudinal slope direction of a road, and the curb opening is discharged through the gutter inlet when the rainfall is large, the device has low interception efficiency of the interception groove because the gutter inlet is positioned at the upstream of the opening, the height difference between the gutter inlet and the bottom of the drainage groove is small, and a rainwater grate is easy to loosen, the interception groove also has potential safety hazards of driving, and the construction is inconvenient; CN109837817A 'a curb for sponge city', in which diversion branch pipes are arranged inside the curb and the road surface, and a diversion main pipe is connected with a downcomer, but the diversion main pipe focuses more on drainage; the Chinese patent publication CN111705589A discloses that the hollow permeable curb, the rainwater well in the green belt, the underground rainwater adjusting tank and the pipeline connecting the components are designed in the rainwater collecting system of the hollow permeable curb, the facility structure is complex, the road rainwater runoff interception rate is low, and the daily maintenance and management are not convenient. Chinese patent publication CN105648873A "a cabin holds formula curb" road rainwater is mainly collected through rainwater collection hole, but this curb does not set up and greenbelt drainage channel, and road rainfall runoff surpasss rainwater collection hole easily, leads to urban road rainfall runoff to hold back inefficiency.
Disclosure of Invention
In order to overcome the defects of the existing road kerb device, the invention provides an integrated open kerb with a diversion trench, which effectively solves the problem of low rainwater runoff interception efficiency of the open kerb of the developed road.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an integral type opening curb of tape guide groove includes: the open kerb is provided with cut-in openings penetrating through two sides of the open kerb; a variable-slope type diversion trench is arranged on the road on one side of the cut-in type opening, and the variable-slope type diversion trench and the open curb are integrally arranged; the variable-slope type diversion trench is covered with a W-shaped rainwater grate, and rainwater on the road can enter the variable-slope type diversion trench along a cross slope and a longitudinal slope of the road; the two surfaces of the variable-slope type diversion trench are both in inclined plate type structures and are used for reducing the retention time of rainwater in the variable-slope type diversion trench; a green land is arranged on the other side of the cut-in type gap; one side of the bottom of the slope-variable diversion trench is communicated with one side of the cut-in type opening, and the other side of the cut-in type opening is communicated with the green land; the shear section of the cut-in type opening is arc-shaped, the included angle of the shear section along the longitudinal direction of the road is 15-30 degrees, and the cut-in type opening is used for improving the rainwater runoff interception efficiency through the diversion effect.
Furthermore, the W-shaped rain grate comprises a plurality of groups of arc concave grate bodies.
Further, according to the road grade, the W-shaped rainwater grate comprises 1-3 groups of arc concave grate bodies, the width of each group of arc concave grate bodies is 15-20cm, and the maximum concave depth in the middle of each group of arc concave grate bodies is 1-2 cm.
Furthermore, opening curb adopts concave-convex structure from beginning to end, and it adopts with adjacent curb concave-convex structure splices together.
Further, the elevation of the green land is 10-20cm lower than the lower edge of the cut-in type gap.
Further, the shear included angle of the cut-in type gap is 25 degrees.
Furthermore, the bottom plate of the variable slope type diversion trench is flush with the lower edge of the cut-in type opening.
Further, along the longitudinal direction of the road, the length of the slope-changing type diversion trench is greater than that of the cut-in type opening and smaller than that of the opening curb.
Further, the elevation of the W-shaped rain grate is lower than the elevation of the upper edge of the cut-in type notch.
Compared with the prior art, the invention has the following technical effects:
the invention has high interception efficiency, does not influence traffic safety, is convenient to process, construct and install, and is simple to maintain and manage and convenient to replace.
Drawings
FIG. 1 is a schematic plan view of an integrated open curbstone with a diversion trench according to the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic perspective view of the one-piece open curbstone with diversion trenches of the present invention;
in the figure, 1-W-shaped rainwater grate, 2-cut-in type opening, 3-slope-changing type diversion trench, 4-greenbelt, 5-pavement and 6-opening curb stone.
Detailed Description
The present invention will be described in detail with reference to the accompanying fig. 1 to 3.
As shown in fig. 1-3, the one-piece open curbstone with guiding gutter of this embodiment includes: w-shaped rainwater comb 1, variable slope type diversion trench 3 and opening curb 6, and opening curb 6 is last to be provided with the cut-in type opening 2 that runs through opening curb 6 both sides. A variable slope type diversion trench 3 is arranged on the road on one side of the cut-in type opening 2, and the variable slope type diversion trench 3 and the opening kerbstone 6 are integrally arranged. The variable slope type diversion trench 3 is covered with a W-shaped rainwater grate 1, and rainwater on the road can enter the variable slope type diversion trench 3 along a cross slope and a longitudinal slope of the road. Both sides of the variable-slope type diversion trench 3 adopt inclined plate type structures and are used for reducing the retention time of rainwater in the variable-slope type diversion trench 3. The other side of the cut-in type gap 2 is provided with a green land 4. One side of the bottom of the slope-changing type diversion trench 3 is communicated with one side of the cut-in type opening 2, and the other side of the cut-in type opening 2 is communicated with the green land 4. The shear section of the cut-in type opening 2 is arc-shaped, the included angle of the shear section along the longitudinal direction of the road is 25 degrees, and the cut-in type opening is used for improving the rainwater runoff interception efficiency through the diversion effect. Opening curb 6 adopts concave-convex structure from beginning to end, and it adopts concave-convex structure concatenation together with adjacent curb.
In this embodiment, as shown in fig. 2, the "W" type rain grate 1 includes 2 groups of circular arc concave grate bodies. The width of each group of arc concave grid bodies is 20cm, the maximum concave depth in the middle is 2cm, and the elevation of the W-shaped rainwater grid 1 is lower than the elevation of the upper edge of the cut-in type opening 2. In addition, the level of the green land 4 is 16cm lower than the lower edge of the cut-in type notch 2. The bottom plate of the slope-variable diversion trench 3 is flush with the lower edge of the cut-in type opening 2. In addition, along the longitudinal direction of the road, the length of the variable slope type diversion trench 3 is greater than that of the cut-in type opening 2 and less than that of the opening curb 6.
The above-mentioned embodiments are only given for the purpose of more clearly illustrating the technical solutions of the present invention, and are not meant to be limiting, and variations of the technical solutions of the present invention by those skilled in the art based on the common general knowledge in the art are also within the scope of the present invention.