Construction method for transforming current drainage ditch cover plate

Abstract

A construction method for transforming a current drainage ditch cover plate comprises the steps that a, the cover plate is built, the cover plate comprises a top plate, a curb side vertical plate and a supporting vertical plate, the curb side vertical plate and the supporting vertical plate are correspondingly arranged at the bottoms of the two ends of the top plate in a supporting mode respectively, the bottom end of the curb side vertical plate is connected with a water flowing plate, and the water flowing plate and the top plate are arranged in a stepped mode; and drainage holes are formed in the curb side vertical plates. B, sundries, garbage and residual rainwater in the drainage ditch are removed; c, temporarily draining rainwater on the road surface into nearby low-lying areas; d, surveying and setting out are conducted on the construction site, and control piles are nailed and erected according to a certain distance; e, paving the dry and hard mortar to the top surfaces of the two side walls of the drainage ditch and a pavement substrate layer; f, the cover plates are installed on the mortar, and the multiple cover plates are installed in a tightly attached mode after being smeared with the mortar; g, mortar is smeared on the outer sides of the supporting vertical plates, and the supporting vertical plates are tightly attached to the sidewalk structure; and h, maintaining at normal temperature. The construction method is simple and convenient, and road rainwater can be smoothly collected while the dismantling and transformation workload is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of urban road drainage facilities, in particular to a construction method for transforming an existing drainage ditch cover. Background Art

[0002] Drainage ditches are indispensable ancillary facilities for road projects. In road projects, water is an important factor affecting the stability of roads. Setting up drainage ditches on one side of the road or on the slope surface can collect rainwater from the slope surface and road surface within the road range and discharge it into the downstream low-lying areas or the municipal pipe network system, which can promptly eliminate the diseases caused by long-term water accumulation on the road surface and road base.

[0003] With socioeconomic development, cities are expanding, and the volume of urban roads is also increasing. Existing roads have reached a certain age, experiencing varying degrees of aging and damage after years of operation. Furthermore, with the continued development of surrounding land, the service level of existing roads is unable to keep up with the growth in traffic volume, necessitating urgent renovation and upgrading to extend their service life. Furthermore, with the continuous expansion of urban areas and the establishment of planned new districts, the functional use and traffic flow characteristics of existing highways are changing, necessitating their transformation into urban roads to accommodate urban development.

[0004] Road upgrades inevitably involve renovating existing road drainage ditches. The current standard practice is to remove existing ditches and install a new, supporting municipal pipe network to collect rainwater from the road surface. However, removing the ditches will damage the existing roadbed and pavement to varying degrees, making it a suboptimal solution from a resource and energy conservation perspective. Therefore, a technology that eliminates the need to remove existing drainage ditches when renovating existing roads is needed. Summary of the Invention

[0005] The purpose of the present invention is to address the problems existing in the prior art and provide a construction method for transforming the existing drainage ditch cover. The construction process for transforming the existing drainage ditch cover is simple. When transforming existing roads, there is no need to demolish the existing drainage ditch. The existing road drainage ditch is fully utilized and transformed into a part of the municipal rainwater system at the lowest cost. It not only reduces the workload of earth and stone breaking and discarding, responds to the low-carbon and environmental protection concept, but also greatly saves financial investment.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A construction method for renovating an existing drainage ditch cover, the construction steps are as follows: a. Build the cover plate. The cover plate consists of a top plate, curbside vertical plates, and support vertical plates. The curbside vertical plates and support vertical plates are supported at the bottom ends of the top plate. The curbside vertical plates and support vertical plates are used to support the top plate across the existing drainage ditch at the edge of the road. The bottom ends of the curbside vertical plates extend outward and are connected to the water flow plate. The water flow plate and the top plate are arranged in a stepped manner. The curbside vertical plates are equipped with multiple drainage holes that can drain water into the existing drainage ditch. The number of drainage holes is based on the length of each curbside vertical plate. The placement of the curbside vertical plates requires water collection calculations and the selection of whether to place curbs at intervals or in full coverage along the road based on the road's rainwater flow rate. The curbside vertical plates are arranged perpendicular to the top plate. On the one hand, they replace traditional curbs, restricting vehicles and pedestrians to their own lanes and ensuring safe passage. On the other hand, they serve as the water inlet of the drainage ditch, collecting rainwater from the road surface through the inlet. The cover assembly is combined with the existing drainage ditch to collect rainwater from the road surface, replacing newly installed municipal rainwater grates and rainwater outlets. The cover assembly is continuously arranged along the longitudinal direction of the road and placed above the drainage ditch, with the longitudinal slope consistent with the longitudinal slope of the road. The cover slabs are connected together by applying cement mortar. The cover slabs overlap the side walls of the drainage ditch and are fixed and connected by applying cement mortar. The cover assembly must be customized according to the specific dimensions of the existing drainage ditch, and no unified standard is set to adapt to the specific applications of different renovation and expansion projects. Before the finished cover slabs are delivered to the site, they must be inspected according to relevant specifications, such as product strength, specifications, dimensions, appearance, and other technical data and product certificates.

[0007] b. Clear away debris and garbage in the drainage ditch and drain away the remaining rainwater in the original ditch.

[0008] c. Take temporary drainage measures to temporarily drain rainwater from the road into nearby low-lying areas.

[0009] d. Measure and lay out the construction site, and erect control stakes at certain distances.

[0010] e. Spread dry hard mortar to the top surface of the walls on both sides of the drainage ditch and the base layer of the road surface. The masonry mortar should be full and uniform in thickness, with a minimum strength grade of M7.5.

[0011] f. Install the cover plate assembly onto the mortar, evenly apply mortar to both sides of the cover plate and place the remaining cover plate close to the previous cover plate. The cover plate should be firmly built, with straight sections vertical, curved sections with smooth transitions, and uniform gaps.

[0012] g. The outer sides of the supporting vertical plates should be coated with mortar to fit tightly with the sidewalk structure without leaving any gaps.

[0013] h. Carry out maintenance at normal temperature and conduct inspection and acceptance after the maintenance period.

[0014] Further preferred: the top plate, water plate, curb side vertical plates, and supporting vertical plates are integrally cast from concrete, with the concrete strength of the cover plate assembly being no less than C25. The top plate's top surface is horizontal, flush with the top surface of the newly constructed sidewalk, and is intended for pedestrian traffic, forming part of the pedestrian passageway. The water plate is embedded in the renovated road pavement, with its top surface flush with the road surface. The thickness of the water plate is adjusted based on the specific pavement structure of the renovation and expansion project, with a minimum thickness of no less than 5 cm. The cover plate assembly (including the water plate) must be installed before paving the asphalt surface layer. During asphalt surface compaction, the water plate prevents damage caused by the roller colliding with the curbstones. It also effectively compacts the asphalt concrete at the curb, reducing the need for secondary compaction with small equipment, and maintaining a neat and aesthetically pleasing road surface. The water plate serves as a water diversion mechanism. Rainwater flows through the cross slope to the pavement edge and is quickly diverted through the water plate to the drainage holes.

[0015] Further preferably, the top plate uses upper transverse steel bars and lower transverse steel bars arranged at intervals with longitudinal steel bars to form a double-layer bidirectional grid-like steel mesh, and multiple connecting steel bars are connected between the double-layer bidirectional grid-like steel meshes.

[0016] Further preferably, the connecting steel bars adopt a concave-shaped structure that is not connected in the middle, and the connecting steel bars connect two groups of spaced upper transverse steel bars and lower transverse steel bars of the double-layer bidirectional grid-like steel mesh.

[0017] Further preferably, the upper transverse steel bars and the lower transverse steel bars adopt a reverse hook structure at both ends, and the hooks of the upper transverse steel bars and the lower transverse steel bars are arranged relative to each other during reinforcement.

[0018] This method for renovating existing drainage ditch covers has a simple construction process, low cost, and easy-to-procure construction materials. The cover device fully utilizes the existing road drainage ditch and transforms it into part of the municipal rainwater system at minimal cost. This not only reduces the workload of soil and rock removal and its disposal, embracing the concept of low-carbon environmental protection, but also greatly saves financial investment. The top of the cover device is flush with the sidewalk and can also serve as part of the sidewalk as a pedestrian passage without occupying additional road space. The drainage ditch cover, curbstone, and water flow plate are integrated into one, which is highly intensive. The cover, curbstone, and water flow plate can be installed in place at one time, greatly improving construction efficiency, shortening the construction period, and further reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional installation structure for modifying the existing drainage ditch cover; Figure 2 This is a schematic diagram of the end face of the installation structure used to transform the existing drainage ditch cover; Figure 3 It is the reinforcement diagram of the top plate; Figure 4 yes Figure 3 AA cross-sectional diagram in; Figure 5 yes Figure 3 BB cross-section diagram in; Figure 6 It is a schematic diagram of the structure of the transverse reinforcement; Figure 7 It is a schematic diagram of the structure of connecting steel bars; The names corresponding to the serial numbers in the figure are: 1. Top plate; 2. Drain plate; 3. Curb side vertical plate; 4. Drain hole; 5. Support vertical plate; 6. Existing drainage ditch; 7. New sidewalk; 8. Reconstruction of road surface; 9. Upper horizontal reinforcement; 10. Lower horizontal reinforcement; 11. Longitudinal reinforcement; 12. Connecting reinforcement. DETAILED DESCRIPTION

[0020] In order to introduce the present invention in more detail, the present invention is further described below in conjunction with embodiments and drawings. Example

[0021] A construction method for renovating an existing drainage ditch cover, the construction steps are as follows: Step 1: Build the cover plate, which includes a top plate 1, curb side vertical plates 3 and support vertical plates 5. The curb side vertical plates 3 and support vertical plates 5 are respectively supported and arranged at the bottom of both ends of the top plate 1. The curb side vertical plates 3 and support vertical plates 5 are used to support the top plate 1 across the existing drainage ditch 6 at the edge of the road surface. The bottom end of the curb side vertical plate 3 extends outward and is connected to a water flow plate 2. The water flow plate 2 and the top plate 1 are arranged in a stepped manner. The curb side vertical plates 3 are provided with a plurality of drainage holes 4 that can discharge water into the existing drainage ditch 6. The number of drainage holes 4 is based on the length of a curb side vertical plate 3. The opening of the curb side vertical plate 3 requires water collection calculation, and whether the curb along the road is set at intervals or fully distributed is selected according to the rainwater flow rate of the road. The curb side panels are positioned perpendicular to the top panel. On the one hand, they replace traditional curbstones, restricting vehicles and pedestrians to their own lanes and ensuring safe passage. On the other hand, they serve as the water inlet for the gutter, collecting rainwater from the road surface through the inlet. The cover panel assembly, combined with the existing gutter, collects rainwater from the road surface, replacing newly constructed municipal rainwater grates and inlets. The cover panel assembly is continuously arranged along the longitudinal direction of the road and placed above the drainage ditch, with the longitudinal slope consistent with the road's longitudinal slope. The cover panels are connected together with cement mortar. Before the finished cover panels arrive on site, they are inspected according to relevant specifications, including technical data such as product strength, specifications, dimensions, and appearance, as well as product certificates.

[0022] Step 2: Clear away debris and garbage in the drainage ditch and drain out the remaining rainwater in the original ditch.

[0023] Step 3: Take temporary drainage measures to temporarily drain rainwater from the road into nearby low-lying areas.

[0024] Step 4: Measure and lay out the construction site, and erect control stakes at certain distances.

[0025] Step 5: Spread the dry hard mortar to the top surface of the walls on both sides of the drainage ditch and the base layer of the road surface. The masonry mortar should be full and uniform in thickness, with a minimum strength grade of M7.5.

[0026] Step 6: Install the cover plate assembly onto the mortar. Apply mortar evenly to both sides of the cover plate and place the remaining cover plate against the previous cover plate. The cover plate should be firmly built, with straight sections vertical, curved sections with smooth transitions, and uniform gaps.

[0027] Step 7: The outer side of the supporting vertical plate 5 should be coated with mortar to fit tightly with the sidewalk structure without leaving any gaps.

[0028] Step 8: Carry out maintenance at normal temperature and conduct inspection and acceptance after the maintenance period.

[0029] The top plate 1, water plate 2, curbside vertical plates 3, and supporting vertical plates 5 are integrally cast from concrete. The concrete strength of the cover plate assembly must be no less than C25. The top surface of the top plate 1 is horizontal, flush with the top surface of the newly constructed sidewalk 7, and is on the same level as pedestrian traffic, forming part of the pedestrian passageway. The water plate 2 is embedded in the renovated road surface 8, with its top surface flush with the road surface. The thickness of the water plate is adjusted according to the different road surface structures of the renovation and expansion project, with a minimum thickness of no less than 5 cm.

[0030] The top plate 1 is formed of a double-layer bidirectional mesh steel bar network with upper transverse steel bars 9 and lower transverse steel bars 10 arranged at intervals with longitudinal steel bars 11. Multiple connecting steel bars 12 are connected between the double-layer bidirectional mesh steel bars.

[0031] The connecting steel bars 12 are of a concave-shaped structure that is not connected in the middle. The connecting steel bars 12 connect two groups of spaced upper transverse steel bars 9 and lower transverse steel bars 10 of the double-layer bidirectional grid-like steel mesh.

[0032] The upper transverse reinforcement 9 and the lower transverse reinforcement 10 adopt a reverse hook structure at both ends. When laying the reinforcement, the hooks of the upper transverse reinforcement 9 and the lower transverse reinforcement 10 are arranged relative to each other.

[0033] The above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the scope of protection of the present invention.

Claims

1. A construction method for renovating an existing drainage ditch cover, characterized by: The construction steps are: a. Constructing a cover plate, the cover plate includes a top plate (1), a curb side vertical plate (3) and a supporting vertical plate (5), the curb side vertical plate (3) and the supporting vertical plate (5) are respectively supported and arranged at the bottom of both ends of the top plate (1), the bottom end of the curb side vertical plate (3) extends outward and is connected to a water flow plate (2), the water flow plate (2) and the top plate (1) are arranged in a stepped manner, and a plurality of drainage holes (4) are provided on the curb side vertical plate (3) for draining water into the existing drainage ditch (6); b. Remove debris and garbage from the drainage ditch and drain away the remaining rainwater in the original ditch; c. Take temporary drainage measures to drain rainwater from the road into nearby low-lying areas; d. Measure and lay out the construction site, and erect control stakes at certain distances; e. Pave the dry hard mortar to the top surface of the walls on both sides of the drainage ditch and the base layer of the road surface. The masonry mortar should be full and uniform in thickness, with a minimum strength grade of M7.5; f. The cover plate is installed on the mortar. The top plate (1) is supported across the existing drainage ditch (6) at the edge of the road surface through the curb side vertical plate (3) and the support vertical plate (5). The mortar is evenly applied to the two side walls of the cover plate and the remaining cover plates are closely attached to the previous cover plate. The cover plate is firmly built, the straight section is vertical, the curve section transition is smooth, and the gaps are uniform. g. Apply mortar to the outside of the supporting vertical plate, making it fit tightly with the sidewalk structure without leaving any gaps; h. Carry out maintenance at normal temperature and conduct inspection and acceptance after the maintenance period.

2. The construction method for renovating an existing drainage ditch cover according to claim 1, characterized in that: The top plate (1), the water flow plate (2), the curb side vertical plate (3) and the supporting vertical plate (5) are integrally cast and formed by concrete; the top surface of the top plate (1) is a horizontal surface, flush with the top surface of the newly built sidewalk (7), and is on the same horizontal plane; the water flow plate (2) is embedded in the renovated road surface (8), and the top surface of the water flow plate (2) is flush with the road surface.

3. The construction method for renovating an existing drainage ditch cover according to claim 1 is characterized in that: The top plate (1) is formed by using upper transverse steel bars (9) and lower transverse steel bars (10) arranged at intervals with longitudinal steel bars (11) to form a double-layer bidirectional grid-like steel mesh, and multiple connecting steel bars (12) are connected between the double-layer bidirectional grid-like steel meshes.

4. The construction method for renovating an existing drainage ditch cover according to claim 3 is characterized in that: The connecting steel bars (12) adopt a concave structure that is not connected in the middle. The connecting steel bars (12) connect two groups of spaced upper transverse steel bars (9) and lower transverse steel bars (10) of the double-layer bidirectional grid-shaped steel mesh.

5. The construction method for renovating an existing drainage ditch cover according to claim 3 is characterized in that: The upper transverse steel bars (9) and the lower transverse steel bars (10) adopt an inverted hook structure at both ends, and the hooks of the upper transverse steel bars (9) and the lower transverse steel bars (10) are arranged relative to each other during reinforcement.

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