Three-grate gutter inlet structure

Abstract

The utility model provides a three-grate gutter inlet structure. The three-grate gutter inlet structure comprises a rain falling opening, a well body and a foundation. The rain falling opening is formed above the well body, and the well body is arranged above the foundation; the rain falling opening comprises a rain falling opening grate base, three grates and a well ring, and the grates and the well ring are arranged above the rain falling opening grate base; a lintel is arranged between every two grates in the three grates; one side of the rainwater falling opening is connected with a rainwater connecting pipe, a water drainage opening is formed in the connecting position of the rainwater connecting pipe and the well body, and the side, away from the rainwater falling opening, of the rainwater connecting pipe is embedded into the well body. The foundation is paved by adopting C15 concrete and / or original pavement milling materials; the three-grate gutter inlet structure is arranged at the position close to an earth shoulder or a kerb. The rainwater inlet structure is simple and reasonable in structure and high in integrity, the strength and stability of the rainwater inlet structure are improved, original pavement milling materials are used for cushion layer construction, emission of building waste is reduced, pollution is reduced, the water collecting capacity of a rainwater falling opening is improved, the technology is simplified, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of road drainage engineering, in particular to a three-grid rainwater outlet structure. Background Art

[0002] The urban drainage system consists of a rainwater system and a sewage system. An inlet (gully) refers to a facility that collects surface water in a piped drainage system. It is a structure that collects rainwater on a rainwater canal or a combined canal. It consists of an inlet grate, a well body, and branch pipes. It is the basic component of a rainwater system. Roads, squares, and lawns.

[0003] The rain outlet is the entrance for rainwater to enter the city's underground and an important facility for collecting ground rainwater. Rainwater from roads, squares, lawns, and even some building roofs first flows into the rain outlet through grates. As the bottleneck for collecting rainwater runoff in the urban drainage system, it is also the primary channel for urban non-point source pollutants to enter the water environment. It not only drains urban roads, but also replenishes water for urban water bodies. In the design of urban drainage pipe networks, rainwater and sewage drainage pipe networks are separated, and domestic sewage is sent to sewage treatment plants through special sewage pipes, while the rain outlet is only responsible for rainwater collection and discharge for flood control and waterlogging prevention.

[0004] Even the rainwater from the roofs of some buildings first flows into the rain outlet through the grates, and then flows into the river or lake through the connecting pipes. The rain outlet is the entrance for rainwater to enter the city's underground. It is an important facility for collecting ground rainwater and directly sends rainwater from the sky to the city's river and lake water system. It is not only the bottleneck for the city's drainage system to collect rainwater runoff, but also the primary channel for urban non-point source pollutants to enter the water environment. It not only drains urban roads, but also replenishes water for urban water bodies.

[0005] However, with the continuous development of China's industrialization and urbanization, urban life has become more and more convenient, but the use of impermeable materials has caused serious hardening of urban soil. When heavy rain comes, it is difficult to drain rainwater from the road surface, which has caused great pressure on urban road traffic operations. Utility Model Content

[0006] In view of this, the purpose of the utility model is to design a three-grid rainwater outlet structure to enhance the water collection capacity of the rainwater outlet, increase the moisture content of the soil under the impermeable ground, improve the stability of the pavement structure, reduce the occurrence of damage, and simplify the process. The original pavement milling material is used for pipe foundation construction to reduce the discharge of construction waste and reduce costs.

[0007] The utility model provides a three-grid rainwater inlet structure, comprising: a rainwater inlet, a well body, and a foundation; the rainwater inlet is arranged above the well body, and the well body is arranged above the foundation; wherein the rainwater inlet comprises: a rainwater inlet grate base, three grates and a well ring, and the grates and the well ring are arranged above the rainwater inlet grate base;

[0008] A lintel is provided between each two of the three grates, for supporting and reinforcing the rain grate base;

[0009] A rainwater connecting pipe is connected to one side of the rain outlet, a drainage outlet is provided at the connection between the rainwater connecting pipe and the well body, and a side of the rainwater connecting pipe away from the rain outlet is embedded in the well body;

[0010] The foundation is paved with C15 concrete and / or original road milling material;

[0011] The original road milling material includes: asphalt gravel mixture scraped off the original damaged asphalt sand road surface with a milling machine; the original road milling material is used as the original road surface material backfill for cushion foundation, which reduces the emission of construction waste, saves costs, reduces pollution and protects the environment.

[0012] The three-grid rainwater outlet structure is arranged near the earth shoulder or the curb.

[0013] Furthermore, the well body is constructed with M10 cement mortar and MU10 clay standard bricks for wall construction, and 1:2 cement mortar is used for grouting inside the wall.

[0014] The inner wall of the well body should have a smooth surface, the masonry mortar should be full, and the joints should be smooth.

[0015] Furthermore, a flashing slope is arranged on the inner side of the bottom of the wellbore above the foundation, and the flashing slope is paved with C15 fine stone concrete and / or original road surface milling material.

[0016] Furthermore, the wall on the well body above the drain outlet is built using a 125 brick vaulting process, with the bricks erected and laid to resist the load-bearing effect above.

[0017] Furthermore, the wall on the well body above the drain outlet is built using a 125 brick vaulting process, with the bricks erected and laid to resist the load-bearing effect above.

[0018] Brick vaults are also called "brick arches" or "brick arches". According to their shapes, they can be divided into flat vaults, semicircular vaults, carport vaults (also called pillow vaults or hall vaults) and wooden comb back vaults. In addition, brick vaults can also be used in door and window styles, thus producing round light vaults, bottle vaults, multi-angle vaults and other special-shaped vaults.

[0019] The utility model adopts a brick arching process above the drain outlet to disperse the structural pressure of the rainwater connecting pipe top to the structures on both sides of the pipe, so as to prevent the pipe at the well wall from being damaged by excessive local pressure.

[0020] Furthermore, the rain grate base is plastered with 1:3 cement mortar, preferably with a thickness of 20 mm.

[0021] Furthermore, a 1:3 cement mortar is used to fill the gap between the rain grate base and the well body. Preferably, the thickness of the cement mortar is 20 mm.

[0022] Furthermore, the road surface paving height at the rain outlet is ≥50mm lower than the surrounding road surface, and the road surface at the rain outlet slopes toward the rain outlet.

[0023] Furthermore, the installation slope of the rain outlet connecting pipe inside the well body is ≥1% to ensure smooth drainage of rainwater.

[0024] Furthermore, the elevation of the setting surface of the grate is ≥30 mm lower than the road surface at the grate, and the edge of the grate is in smooth connection with the road surface around the grate.

[0025] Furthermore, the height of the foundation at the rain outlet connecting pipe is lower than the height of the flooding slope, and the height difference is greater than 120 mm.

[0026] Compared with the prior art, the utility model has the following beneficial effects on the culvert structure for reinforcing the roadbed bottom:

[0027] The three-grid rainwater outlet of the utility model has a simple and reasonable structure, strong integrity, improved strength and stability of the rainwater outlet structure, simple construction, and uses the original road milling material for cushion construction, reducing construction waste discharge, reducing pollution, and protecting the environment. The rainwater outlet has improved water collection capacity, increased the water content of the soil under the impermeable ground, slowed down ground settlement, prevented the road from being flooded by heavy rain, and reduced the ground surface temperature, improved the stability of the road structure, reduced the occurrence of damage, simplified the process, and reduced the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0029] Figure 1 This is a plan view schematic diagram of a three-grid rainwater outlet structure of the utility model;

[0030] Figure 2 This is a schematic AA cross-sectional view of a three-grid rainwater outlet structure of the utility model;

[0031] Figure 3 It is a BB cross-sectional schematic diagram of a three-grating rainwater outlet structure of the utility model.

[0032] The symbols in the accompanying drawings are:

[0033] 1. Rain grate base, 2. Well body, 3. Grate, 4. Foundation, 5. Overflow slope, 6. Brick arch, 7. Rainwater connecting pipe, 8. Drain outlet, 9. Lintel, 10. Earth shoulder, 11. Curbstone, 12. Road surface. DETAILED DESCRIPTION

[0034] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0038] The embodiment of the utility model provides a three-grid rainwater inlet structure, comprising: a rainwater inlet, a well body 2, and a foundation 4; the rainwater inlet is arranged above the well body 2, and the well body 2 is arranged above the foundation 4; wherein the rainwater inlet comprises: a rainwater inlet grate base 1, three grates 3 and a well ring, and the grates 3 and the well ring are arranged above the rainwater inlet grate base 1;

[0039] A lintel 9 is provided between each two of the three grates 3, for supporting and reinforcing the rain grate base 1;

[0040] A rainwater connecting pipe 7 is connected to one side of the rain outlet, a drain port 8 is provided at the connection between the rainwater connecting pipe 7 and the well body 2, and a side of the rainwater connecting pipe 7 away from the rain outlet is embedded in the well body 2;

[0041] The foundation 4 is paved with C15 concrete and / or original road milling material;

[0042] The original road milling material includes: asphalt gravel mixture scraped off the original damaged asphalt sand road surface with a milling machine; the original road milling material is used as the original road surface material backfill for cushion foundation, which reduces the emission of construction waste, saves costs, reduces pollution and protects the environment.

[0043] The three-grid rainwater outlet structure is arranged near the earth shoulder 10 or the curb 11.

[0044] The well body 2 is constructed with M10 cement mortar and MU10 clay standard bricks, and 1:2 cement mortar is used to grout the walls.

[0045] The inner wall of the well body 2 should have a smooth surface, the masonry mortar should be full, and the joints should be smooth.

[0046] A flashing slope 5 is arranged on the inner side of the bottom of the well body 2 above the foundation 4, and the flashing slope 5 is paved with C15 fine stone concrete and / or original road surface milling material.

[0047] The wall on the well body 2 above the drain outlet is built using the 125 brick arch 6 process, with the bricks erected and laid to resist the load-bearing effect above.

[0048] This embodiment adopts the brick arching process above the drain outlet to disperse the structural pressure on the top of the rainwater connecting pipe to the structures on both sides of the pipe, so as to prevent the pipe at the well wall from being damaged by excessive local pressure.

[0049] The rain grate base 1 is plastered with 1:3 cement mortar. In this embodiment, the plastering thickness is 20 mm.

[0050] The seam between the rain grate base 1 and the well body 2 is filled with 1:3 cement mortar. In this embodiment, the thickness of the cement mortar is 20 mm.

[0051] The paving height of the road surface at the rain outlet is ≥50mm lower than the surrounding road surface, and the road surface at the rain outlet slopes toward the rain outlet.

[0052] The installation slope of the rain outlet connecting pipe 7 inside the well body 2 is ≥1% to ensure smooth drainage of rainwater.

[0053] The height of the foundation 4 at the rain outlet connecting pipe 7 is lower than the height of the flooding slope 5, and the height difference is greater than 120 mm.

[0054] The elevation of the setting surface of the grate 3 is lower than the road surface at the grate by ≥30 mm, and the edge of the grate 3 is in line with the road surface 12 around the grate.

[0055] In this embodiment, the number of projects for a single three-grid rain outlet is shown in Table 1:

[0056] Table 1

[0057]

[0058] The structure of the rainwater outlet of the third embodiment of the utility model is simple and reasonable, with strong integrity, which improves the strength and stability of the rainwater outlet structure, is easy to construct, uses the original road surface milling material for cushion construction, reduces the discharge of construction waste, reduces pollution, and protects the environment. It improves the water collection capacity of the rainwater outlet, increases the water content of the soil under the impermeable ground, slows down the ground settlement, prevents the road surface from being flooded by heavy rain and reduces the ground surface temperature, improves the stability of the road surface structure, reduces the occurrence of damage, simplifies the process, and reduces the cost.

[0059] Application Examples

[0060] 1. Construction specifications and acceptance standards:

[0061] "Specification for Construction and Acceptance of Water Supply and Drainage Pipeline Projects GB50268-2008";

[0062] "Municipal Drainage Pipeline Engineering and Ancillary Facilities 06MS201" 06MS201-8-10 / 11.

[0063] 2. Project quality standards:

[0064] (1) The position and size should meet the design requirements. The plane size error should not exceed +10mm, the elevation error should not exceed -10mm, the concrete well ring processing size error should not exceed ±2mm, the diagonal error should not exceed ±2mm, and the cast iron grate size error should not exceed ±1mm.

[0065] (2) The masonry mortar must be full and there should be no vertical joints in the masonry.

[0066] 3. Construction process:

[0067] Construction layout → manual layout → foundation treatment → bottom plate construction → connection pipe laying and interface pouring rain outlet leveling → masonry well wall → installation of well ring and well grate → maintenance and finished product protection;

[0068] 4. Construction process details:

[0069] 4.1 Construction layout:

[0070] Before starting construction, control points shall be set according to the height and coordinates of the benchmark points determined by the surveying team, construction benchmark points shall be laid out along the way, the stake numbers shall be kept in good condition, and the pipeline centerline and excavation sideline shall be marked.

[0071] 4.2 Construction preparation:

[0072] Before excavation, clean the foundation surface first, and check whether the size, position and elevation meet the design requirements; select ordinary bricks (solid sintered bricks) that meet the water resistance, frost resistance and strength grade requirements according to the design requirements, and moisten the bricks; the required pipes, bricks, sand, stones and other materials are stacked neatly, 1.0m away from the ditch edge; the mortar is mixed according to the design and specifications, and the materials are loaded and mixed according to the specified grade configuration ratio. Control the mixing time to ensure that the mortar is mixed evenly and can be used as soon as it is mixed.

[0073] 4.3 Trench excavation:

[0074] After the second layer of water-stabilizing agent is laid and the roller is rolled, the rainwater well is dug manually. The manual excavation method is adopted, and the elevation is strictly controlled during excavation to prevent over-excavation or disturbance of the base. During the excavation process, the bottom of the trench is repaired in time, and the foundation construction is carried out immediately. The excavated earth and stone are piled at a distance of not less than 1.0m from the edge of the trench and the height does not exceed 1.2m.

[0075] 4.4 Foundation treatment:

[0076] The trench bottom elevation is controlled during trench excavation. The local over-excavation at the trench bottom is handled as follows:

[0077] When the over-excavation depth of the drainage trench with a moisture content close to the optimum moisture content is less than or equal to 15 cm, the original soil from the trench with a moisture content close to the optimum moisture content can be backfilled and compacted, and its compaction degree should not be lower than the density of the original natural foundation soil, or it can be treated with lime soil, and its compaction degree should not be lower than 95%.

[0078] 4.5 Bottom plate construction:

[0079] The bottom surface of the rain outlet is a 10cm C15 cast-in-place concrete base plate, and the side formwork is fixed with 10*10 wooden beams and steel chisels.

[0080] 4.6 Connection pipeline laying and interface:

[0081] Before laying the pipeline, check the quality of the pipe section by section, clear the debris in the pipe, and only after the foundation concrete strength reaches 75% of the design strength can the pipe be laid. The pipe is D300 high-density polyethylene double-wall corrugated pipe, and the pipe section is manually laid, and the pipe is laid from downstream to upstream. The laying of rainwater branch pipes should be straight and smooth, and no staggered, reverse slope, or concave pockets are allowed. The exposed pipe end faces in the inspection well and rain outlet should be intact, and the broken pipe end should not be placed in the rain outlet. The laying, interface, and backfill of the rain outlet pipe and the rain outlet connecting pipe should be regarded as rainwater pipes, and constructed according to relevant standards and specifications. The pipe mouth should be flush with the inner wall of the well.

[0082] 4.7 Rainfall outlet construction:

[0083] Lay out the center position line of the rain outlet and arrange the position of the well brick wall according to the size of the rain outlet.

[0084] After the concrete of the bottom slab reaches the required strength, MU10 bricks are laid with M10 cement mortar. Mortar is first laid on the bottom slab surface before bricklaying, and one horizontal and one vertical bricklaying is adopted. During the masonry, the lines are laid on the foundation surface, and the bricks are laid after mortar is laid. The bottom and top bricks are laid with vertical bricks. The vertical mortar joints of the upper and lower layers of each layer of bricks should be staggered, and the size should be checked as the masonry is laid. A 5cm thick C15 fine stone concrete is poured on the clearance in the middle. The joints in the wall are grouted with 1:2 cement mortar.

[0085] 4.8 Installation of rainwater grates:

[0086] After the rain outlet is built to the specified elevation, the well seat and rain grate are installed in time. During installation, the brick top surface is washed clean with water, and the well seat is 20mm thick with 1:3 cement mortar. Leveling is carried out according to the designed elevation, and the rain grate is installed in place. The surface elevation of the rain outlet well ring is 30mm lower than the road surface at that location, and it is connected with the nearby road surface.

[0087] The rain outlet is built to 2cm higher than the second water-stable surface without affecting the paving of the first layer of asphalt, and then covered with steel plates.

[0088] After the construction of the rain gutter is completed, the first layer of asphalt concrete is laid, and then the rain grate is installed. After the paved asphalt concrete cools down, the asphalt is manually excavated, the steel plate is removed, the asphalt concrete around the rain gutter is trimmed, the outer dimensions of the rain gutter are reserved, and all debris in the rain gutter is removed.

[0089] After checking that there is no problem with the elevation of the top surface of the rain outlet, sprinkle water on the top surface of the rain outlet to moisten it, use 1:3 cement mortar to make 2cm thick mortar at the location where the grate needs to be installed, and then place the rain outlet grate base, and apply mortar on the inside of the base. During installation, keep the base flat, and the grate base should be on the ground as a whole, stable and not loose. The grate is installed and used in conjunction with the well ring.

[0090] When paving asphalt pavement, the rainwater grate should be connected smoothly within 100cm in front and behind the rain outlet along the road direction and 50cm in the horizontal direction. During pavement construction, no construction machinery should directly roll over the grate. The area around the grate should be paved manually and compacted by small machines.

[0091] 4.9 Maintenance and finished product protection:

[0092] In order to keep the appearance of the water grate beautiful and clean the writing and patterns, the surface of the water grate should be protected when pouring asphalt or cement on the road surface to avoid contamination and inability to clean.

[0093] After the rain outlet protection ring is poured with concrete or paved with asphalt, the grate should be opened and cleaned in time to prevent the mortar or asphalt from pouring the water grate and the well seat into one, which will affect the opening in the future.

[0094] So far, the technical solution of the utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without departing from the principle of the utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the utility model.

[0095] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-grid rainwater inlet structure, characterized in that: include: Rainfall, well shaft, foundation; The rain outlet is arranged above the well body, and the well body is arranged above the foundation; wherein the rain outlet comprises: a rain outlet grating base, three grates and a well ring, and the grates and the well ring are arranged above the rain outlet grating base; A lintel is provided between each two of the three grates, for supporting and reinforcing the rain grate base; A rainwater connecting pipe is connected to one side of the rain outlet, a drainage outlet is provided at the connection between the rainwater connecting pipe and the well body, and a side of the rainwater connecting pipe away from the rain outlet is embedded in the well body; The foundation is paved with C15 concrete and / or original road milling material; The three-grid rainwater inlet structure is arranged near the earth shoulder or curbstone; the well body is built with M10 cement mortar and MU10 clay standard bricks, and 1:2 cement mortar is used to point the joints in the wall; A flashing slope is arranged on the inner side of the bottom of the wellbore above the foundation, and the flashing slope is paved with C15 fine stone concrete and / or original road surface milling material; The height of the foundation at the rain outlet connection pipe is lower than the height of the flooding slope, and the height difference is greater than 120 mm; The pavement height at the rain outlet is ≥50mm lower than the surrounding road surface, and the road surface at the rain outlet slopes toward the rain outlet; The wall on the well body above the drain outlet is built using a 125 brick vaulting process, with the bricks erected and laid to resist the load-bearing effect above; The rain grate base is plastered with 1:3 cement mortar; The gap between the rain grate base and the well body is filled with 1:3 cement mortar; The installation slope of the rain outlet connecting pipe inside the well body is ≥1% to ensure smooth rainwater discharge; The elevation of the setting surface of the grate is lower than the road surface at the grate by ≥30mm, and the edge of the grate is in smooth connection with the road surface around the grate.

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