Pressure-bearing inclined ditch type gutter inlet structure above sewage tank-shaped culvert

Abstract

A pressure-bearing inclined ditch type gutter inlet structure above a sewage box-shaped culvert comprises the sewage box-shaped culvert and a gutter inlet, the gutter inlet is located at the top of the sewage box-shaped culvert, and the gutter inlet is arranged at the lateral low-lying position of a curb where a motor vehicle lane is connected with a green belt or a sidewalk. The gutter inlet comprises a gutter inlet side wall, a gutter inlet foundation, a gutter inlet connecting pipe, a gutter inlet water inlet grate, a well seat and a lintel, the gutter inlet foundation is arranged on the top face of the top structure of the sewage box-shaped culvert, and a waterproof layer is laid between the gutter inlet foundation and the top face of the top structure of the sewage box-shaped culvert. Cable-stayed steel bars are arranged on the inner side and the outer side of the bottom of the gutter inlet side wall to form a haunched structure of the bottom of the gutter inlet side wall and the gutter inlet foundation. According to the construction application of the gutter type gutter inlet structure, the stacking condition of the composite gutter inlet structure above a box-shaped culvert can be effectively treated, and meanwhile the problems that a motor vehicle damages the gutter inlet in a rolling mode, the gutter inlet collapses to influence traffic safety and the long-term maintenance cost of the gutter inlet is too high can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater inlet construction structures for motor vehicle lanes on municipal roads, in particular to a pressure-bearing side-ditch type rainwater inlet structure above a sewage box-shaped culvert. Background Art

[0002] The municipal road stormwater inlet is an important municipal facility in the city's municipal stormwater drainage system. It generally refers to a structure that has the function of collecting rainwater from the road surface and connecting it to the urban stormwater drainage system through rainwater connecting pipes. It is generally arranged in the low-lying area on the side of the curb where the motor vehicle lane meets the green belt (or sidewalk) so that rainwater from the road surface can be collected quickly and effectively to avoid waterlogging caused by road accumulation, traffic obstruction, and splashing of accumulated water.

[0003] According to the different forms of water collection of the rainwater inlet, the rainwater inlet is mainly divided into four types: flat grate type, side ditch type, combined type, and vertical grate type. The structure of the side ditch type rainwater inlet mainly includes: water inlet grate, well seat and lintel, side wall, connecting pipe and foundation. The side ditch type rainwater inlet has the advantages of fast water inlet speed, smooth water flow, simple construction, and wide application range. It is a more common rainwater inlet in southern cities. The water inlet grate is generally made of cast iron, steel grating, reinforced concrete or stone. The use of reinforced concrete or stone water inlet grates can save steel, but its water inlet capacity is far less than that of cast iron water inlet grates. In order to improve the water inlet capacity of reinforced concrete or stone water inlet grates, some cities lower the bottom of the side ditch at the rainwater inlet by several centimeters, but it causes inconvenience to traffic and may even cause traffic accidents. The stripe direction of the water inlet grate is also closely related to the water inlet capacity. The water inlet effect is better when the grate is parallel to the water flow direction than when it is perpendicular. Therefore, in some places, the water inlet grate is designed in a criss-cross form to discharge rainwater flowing from different directions on the road surface. The well seat and lintel are generally made of prefabricated reinforced concrete materials, which are easy to install, can be prefabricated in batches, and the unit price of the finished product is low, with high cost performance. The side wall is divided into several types according to the material: brick masonry, concrete module masonry or reinforced concrete prefabricated. The material strength of brick masonry is low and the compressive strength is weak, but the procurement cost is the lowest; the material strength of concrete module masonry is higher than that of brick masonry, the size of each module masonry is moderate, the weight is appropriate, the masonry module is easy to assemble, the technical requirements for operators are low, it is easy to ensure the quality of the project, and shorten the construction period; the material strength of reinforced concrete prefabricated is relatively the highest, but the size of the prefabricated mold is fixed, which is suitable for the mass production and procurement of rainwater outlets of uniform size, but not suitable for the installation of rainwater outlets of special sizes. The connecting pipe is generally made of concrete pipes and PVC pipes. Concrete pipes are prefabricated reinforced concrete pipes, which are purchased as finished products. They are suitable for rainwater pipe construction with high strength and large pipe diameter requirements (not less than DN300). The weight of a single pipe is large, the installation time is long, and the comprehensive unit price is high. PVC pipes are purchased as finished products by length, which are not easily affected by oxidation and ultraviolet rays. The weight of a single pipe is small, and the installation time is short. However, they may become brittle in low temperature environments, and are easily impacted or twisted. The pipe strength is not high, and it is suitable for rainwater pipe construction with small pipe diameter requirements. The foundation is the bottom plate of the rainwater outlet structure. Generally, plain concrete with a concrete strength grade of C20 is used. It is easy to crack and deform under pressure, resulting in rainwater seepage, softening the soil roadbed below, reducing the pressure bearing capacity of the rainwater outlet, and the rainwater outlet structure is then unstable and damaged. The ditch-type rainwater outlet is flush with the road surface and is located on the driving track of the motor vehicle. Because it is constantly subjected to the gravity load of the motor vehicle and the impact load caused by braking during use, this type of rainwater outlet structure is prone to cracking, sinking and breaking under pressure. The collapse gap causes driving bumps, personnel or vehicle falls and other safety hazards.At the same time, after the structure of the rainwater outlet is cracked and damaged, the rainwater collected by the rainwater outlet can penetrate into the roadbed through the cracks, which will not only reduce the strength of the roadbed soil and cause structural damage to the roadbed, but also the infiltrated rainwater and compounds in the water will affect the municipal facilities buried around the rainwater outlet, causing cable short circuits, municipal pipeline corrosion and other hazards. Therefore, how to optimize the structure of the ditch-type rainwater outlet and improve the pressure-bearing capacity of the ditch-type rainwater outlet is of great significance to solve the problem of the ditch-type rainwater outlet being easily damaged and the damage and seepage leading to insufficient roadbed stability on roads with heavy traffic or large traffic flow. Public literature also reports some technologies related to pressure-bearing rainwater outlets, such as:

[0004] 1. Chinese Patent: Rainwater Inlet Structure, Application Number: 202320630443.3, Application Date: 2023.03.27, Abstract: The utility model relates to a rainwater inlet structure, including a grate and a well body arranged below the road surface, the top of the well body is provided with a reinforcement part integrally formed with a road reinforcement plate, and the grate is arranged on the reinforcement part through a support. It can not only enhance the load-bearing capacity of the rainwater inlet and avoid damage due to long-term vehicle load, but also make the upper structure of the rainwater inlet and the road reinforcement plate an integral whole, reducing the uneven settlement around the rainwater inlet.

[0005] 2. Chinese Patent: Side-ditch Rainwater Inlet, Application Number: 201721567960.1, Application Date: 2017.11.22, Abstract: The utility model discloses a side-ditch rainwater inlet, characterized in that it includes a water inlet grate, a well body, a branch pipe, a drainage hole, and a cover plate. The top cover plate of the rainwater inlet is made of permeable concrete material, and the upper part of the water flow can penetrate into the well through the permeable concrete. The branch pipe is provided with a strip drainage hole. The upper part of the branch pipe is made of ordinary concrete, and the lower part of the branch pipe is made of permeable concrete of the same strength. The cross-section is in the shape of a straight wall arch, and the inner pipe wall is circular. The water flowing into the water pipe can infiltrate into the ground through drainage holes and permeable concrete. Compared with conventional masonry and concrete materials, it has the advantages of simple construction, short construction period, high bearing capacity, and high channel utilization coefficient. It can ensure that while rainwater flows into the soil, soil particles are prevented from entering the branch pipe. The ditch-type rainwater outlet has the effect of strengthening the water collection capacity of the rainwater outlet, increasing the water content of the soil under the urban impermeable ground, slowing down ground subsidence, preventing the road surface from being flooded by heavy rain, and reducing the ground surface temperature.

[0006] Through application investigation and research, it is found that although the above-mentioned disclosed technology can improve the pressure bearing capacity of the stormwater inlet, the above-mentioned technology is not suitable for construction in an environment where there are relatively complex municipal facilities distributed under the urban roads, such as: traffic pipelines, lighting pipelines, telecommunications pipelines, gas pipelines, water pipes, stormwater pipes, sewage pipes, circular culverts and box culvert structures, etc., especially when there are municipal facilities around the stormwater inlet and it is difficult to adjust the plane position of the stormwater inlet. The sewage box culvert structure has a special impact on the construction of the ditch-type stormwater inlet above it. If it is not handled properly, it will affect the existing sewage box culvert structure. When the composite structure composed of the proposed ditch-type stormwater inlet and the existing sewage box culvert is unable to meet the growing traffic pressure, the structure will inevitably have problems such as cracking and damage, which may even lead to the mixed discharge of rainwater and sewage, violating the "rainwater and sewage separation" drainage system and damaging the urban water environment. Summary of the invention

[0007] The purpose of the utility model is to provide a pressure-bearing side-ditch type rainwater outlet structure above a sewage box-shaped culvert in view of the defects of the prior art. The application of the pressure-bearing side-ditch type rainwater outlet structure above the sewage box-shaped culvert can effectively solve the problems of motor vehicle rolling damage to rainwater outlets, rainwater outlet collapse affecting driving safety and excessively high long-term maintenance costs of rainwater outlets, and is conducive to effectively handling the stacking situation of the composite rainwater outlet structure above the box-shaped culvert.

[0008] In order to achieve the above object, the technical solution of the utility model is as follows:

[0009] A pressure-bearing side-ditch type rainwater inlet structure above a sewage box-shaped culvert comprises a sewage box-shaped culvert and a rainwater inlet, wherein the rainwater inlet is located at the top of the sewage box-shaped culvert, and is arranged at a lateral low-lying part of a curbstone where a motor vehicle lane meets a green belt or a sidewalk, and comprises a rainwater inlet side wall, a rainwater inlet foundation, a rainwater inlet connecting pipe, a rainwater inlet water inlet grate, a well seat and a lintel, wherein the rainwater inlet foundation is arranged on the top surface of the top structure of the sewage box-shaped culvert, the rainwater inlet side wall enclosure is arranged on the rainwater inlet foundation, the well seat and the lintel are arranged on the top of the rainwater inlet side wall, the rainwater inlet connecting pipe is connected to the space enclosed by the rainwater inlet side wall, the rainwater inlet water inlet grate support cover is on the upper part of the well seat and the lintel, a waterproof layer is laid between the rainwater inlet foundation and the top surface of the top structure of the sewage box-shaped culvert, and inclined steel bars are arranged on the inner and outer sides of the bottom of the rainwater inlet side wall to form a side arm structure of the bottom of the rainwater inlet side wall and the rainwater inlet foundation.

[0010] Further preferred: the rain inlet side walls, rain inlet foundation, well seat and lintel are cast and formed by C30 concrete, and the rain inlet side walls, rain inlet foundation, well seat and lintel are all pre-embedded with steel frame skeletons, and the rain inlet side walls, rain inlet foundation, well seat and lintel are welded into one; the two ends of the inclined steel bars are welded into one corresponding to the steel frame skeletons of the rain inlet side walls and rain inlet foundation.

[0011] Further preferred: the steel skeleton of the rainwater outlet foundation adopts 26 single-layer bidirectional C12 main bars; the steel skeleton of the rainwater outlet side wall adopts 14 C14 steel bars, 14 A10 steel bars and 31 A6.5 stirrups; the steel skeleton of the well seat and lintel adopts 21 A10 steel bars, 31 A6.5 stirrups and 16 A6.5 tie bars.

[0012] Further preferred: the waterproof layer adopts polymer modified asphalt roll material, the polyvinyl tire base is located at the upper 1 / 3 of the roll material, the thickness is 4mm, and the modified asphalt hot melt adhesive is applied to the paving surface. During the paving process, the flame of the spray gun is adjusted to blue flame, and the reciprocating baking is performed to ensure uniform heating.

[0013] Further preferred: the rainwater inlet connecting pipe adopts D219 steel pipe with a wall thickness of 6mm, and the anti-corrosion coating adopts epoxy coal tar coating. The second coating can be applied only after the previous coating is dry, and it is repeated three times to ensure the thickness and density of the anti-corrosion coating.

[0014] Further preferred: the load strength of the rainwater inlet grate is not less than D400, and it is made of ductile iron QT500-7; the anti-corrosion material is 2-3 coats of epoxy coal tar paint, and the next coating process can only be carried out after the previous coat is air-dried.

[0015] The advantages of the pressure-bearing side-ditch rainwater inlet structure above the sewage box culvert are as follows:

[0016] 1. The side walls, foundation, well seat and lintel of the pressure-bearing gully-type stormwater inlet structure above the sewage box-shaped culvert are made of C30 concrete cast-in-place technology, and the concrete strength of the entire structure is uniform, and the stress on the structure can be evenly distributed, solving the special size problem of the stormwater inlet when the composite stormwater inlet structure is stacked.

[0017] 2. The conventional rainwater inlet foundation slab adopts plain concrete structure. The foundation slab and the rainwater inlet side wall cannot form a structural whole. The stress condition of the slab is poor. The rainwater inlet side wall is the main structure to bear the upper pressure, which is easy to cause concentrated pressure damage to the sewage box culvert below, and has uncontrollable damage to the existing culvert structure. This pressure-bearing ditch-type rainwater inlet structure is treated with 26 C12 reinforcements in a single layer and in both directions on the concrete foundation slab of the rainwater inlet. Compared with the plain concrete foundation slab of the conventional rainwater inlet, it has a larger effective stress area. After the rainwater inlet is under pressure, the upper pressure can be dispersed through the structural side wall and the stress structure of the entire foundation slab, without causing concentrated damage to the existing sewage box culvert structure below the rainwater inlet, so as to achieve the purpose of stacking and coordinated stress of the composite rainwater inlet structure.

[0018] 3. Conventional rainwater outlets are only reinforced on the side walls of the rainwater outlets. The side walls are the main structure that bears the upper pressure. The side walls of the rainwater outlets are easily affected by the braking pressure of the car, causing cracking and bending cracks in the concrete structure. In this pressure-bearing ditch-type rainwater outlet structure, inclined steel bars are set on the inside and outside of the bottom of the rainwater outlet side walls, and the side wall structure is welded to the bottom plate structure. The mechanical principle of triangle stability is used to solve the problem of the general frame-type steel bar structure that is not resistant to torsion, and improve the overall torsion strength of the rainwater outlet.

[0019] 4. Conventional rainwater outlets are only reinforced on the side walls of the rainwater outlets. The side walls are the main structure that bears the upper pressure. The side walls of the rainwater outlets are easily affected by automobile loads, causing shear and fracturing damage to the concrete structure. In addition, the passage of cars can easily cause the rainwater outlet structure to shake and become unstable. In the unstable state, it is very easy to cause structural damage. In this pressure-bearing ditch-type rainwater outlet structure, the bottom of the rainwater outlet side wall and the bottom plate are treated with axillary treatment, and the bottom of the side wall forms a wall toe structure, which can significantly improve the pressure-bearing capacity and overall stability of the rainwater outlet, making the rainwater outlet structure less susceptible to shear pressure caused by automobile braking.

[0020] 5. Conventional rainwater inlets are prone to leakage at the bottom, causing harm to the more complex municipal facilities distributed under the urban roads. When building a ditch-type rainwater inlet above the sewage box-shaped culvert structure, if the leakage hazard is not properly handled, it will cause corrosion, softening of the foundation, extrusion displacement and other adverse effects on the existing sewage box-shaped culvert structure. The waterproof membrane is laid at the bottom of the rainwater inlet structure in this pressure-bearing ditch-type rainwater inlet structure, which can not only play a waterproof and isolation role in the sewage box-shaped culvert-rainwater inlet composite stacking structure, avoiding the structural seepage caused by uncertain factors such as sinking, cracking, and displacement of the existing sewage box-shaped culvert structure during use, but also can significantly increase the friction between the upper rainwater inlet structure and the lower box-shaped culvert structure, so that the upper and lower structures in the composite structure are not prone to tearing and damage caused by opposite misaligned sliding or unequal sliding in the same direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view schematic diagram of the partial ditch type rainwater outlet;

[0022] Figure 2 yes Figure 1 Schematic diagram of the middle AA direction;

[0023] Figure 3 yes Figure 1 Schematic diagram of the middle BB direction;

[0024] The names of the serial numbers in the figure are:

[0025] 1. Curbstone; 2. Side wall of rainwater inlet; 3. Armpit structure; 4. Waterproof layer; 5. Sewage box culvert; 6. Rainwater inlet foundation; 7. Rainwater inlet connecting pipe; 8. Rainwater inlet grate; 9. Well seat and lintel. DETAILED DESCRIPTION

[0026] In order to introduce the present invention in more detail, the present invention will be further described below in conjunction with the accompanying drawings. Example 1

[0027] A pressure-bearing side-ditch rainwater inlet structure above a sewage box-shaped culvert comprises a sewage box-shaped culvert 5 and a rainwater inlet, wherein the rainwater inlet is located at the top of the sewage box-shaped culvert 5, and the rainwater inlet is arranged at a lateral low-lying part of a curbstone 1 where a motor vehicle lane is connected to a green belt or a sidewalk, and the rainwater inlet comprises a rainwater inlet side wall 2, a rainwater inlet foundation 6, a rainwater inlet connecting pipe 7, a rainwater inlet water inlet grate 8, a well seat and a lintel 9, the rainwater inlet foundation 6 is arranged on the top surface of the top structure of the sewage box-shaped culvert 5, and the rainwater inlet side wall 2 is arranged on the top surface of the top structure of the sewage box-shaped culvert 5. The enclosure is arranged on the gully foundation 6, the well seat and the lintel 9 are arranged on the top of the gully side wall 2, the gully connecting pipe 7 is communicated with the space enclosed by the gully side wall 2, the gully water inlet grate 8 is supported and sealed on the upper part of the well seat and the lintel 9, a waterproof layer 4 is laid between the gully foundation 6 and the top surface of the top structure of the sewage box-shaped culvert 5, and inclined steel bars are arranged on the inner and outer sides of the bottom of the gully side wall 2 to form a side arm structure 3 between the bottom of the gully side wall 2 and the gully foundation 6.

[0028] The reconstruction construction steps of the pressure-bearing side-ditch rainwater inlet structure above the sewage box culvert are as follows:

[0029] (1) Cut and seal the blocked drainage branch pipes of the existing second-grate rainwater outlet.

[0030] (2) Manually chisel out the existing collapsed second-grate rainwater outlet and polish the attachments on the top of the sewage box-shaped culvert structure.

[0031] (3) According to the scale of the expanded four-grate stormwater inlet, the slope range of the foundation pit is determined with an excavation slope of 1:0.67, and the foundation pit of the four-grate stormwater inlet is manually excavated to the top of the sewage box culvert structure.

[0032] (4) At the boundary line of the foundation pit slope, the existing road surface is cut to the bottom of the semi-rigid pavement structure layer and the excavation slope is trimmed.

[0033] (5) Clean the top surface of the sewage box culvert structure, lay the waterproof membrane at high temperature under dry conditions, and flatten and compact it.

[0034] (6) Bury the rainwater inlet connecting pipe, connect it to the inspection well, and apply anti-corrosion paint.

[0035] (7) After the waterproofing membrane cools down, weld the steel bars of the rainwater inlet foundation, well wall, lintel and well seat as a whole;

[0036] (8) Build the mold, pour C30 concrete, and adjust the well elevation.

[0037] (9) After the maintenance of the concrete components of the rainwater inlet is completed, install the rainwater grate and spray asphalt varnish coating.

[0038] Select the cutting line outside the rainwater outlet structure, cut the blocked drainage branch pipe smoothly and neatly, and use rubber sleeves to tightly seal the cut mouth of the old pipe. The existing two-grate rainwater outlet is manually chiseled to the top surface of the sewage box culvert structure, and the attachments outside the box culvert structure are polished clean. The proposed ditch-type rainwater outlet is laid out and excavated according to the four-grate scale. The excavation slope is 1:0.67, and the bottom of the foundation pit is on the same horizontal plane as the top surface of the sewage box culvert structure. Polymer modified asphalt waterproof membrane is laid on the bottom surface of the proposed ditch-type rainwater outlet, and the modified asphalt hot melt adhesive is fully coated on the paved surface. During the laying process, the flame of the spray gun is adjusted to blue flame, and the reciprocating movement baking is used to ensure uniform heating. When applying epoxy coal tar anti-corrosion coating to the rainwater outlet connecting pipe, it is necessary to wait for the previous coat of coating to dry before applying it again. Repeat three times to ensure the thickness and density of the anti-corrosion coating.

[0039] The foundation of the rainwater inlet adopts 26 single-layer and bidirectional C12 main bars; the side walls of the rainwater inlet adopt 14 C14 steel bars, 14 A10 steel bars and 31 A6.5 stirrups; the well seat and lintel adopt 21 A10 steel bars, 31 A6.5 stirrups and 16 A6.5 tie bars.

[0040] The gully side wall 2, gully foundation 6, well seat and lintel 9 are cast and formed by one-time casting of C30 concrete. The gully side wall 2, gully foundation 6, well seat and lintel 9 are all pre-buried with steel skeletons. The gully side wall 2, gully foundation 6, well seat and lintel 9 are welded together with the steel skeletons pre-buried in the gully side wall 2, gully foundation 6, well seat and lintel 9; the two ends of the diagonal steel bars are welded together with the steel frame skeletons of the gully side wall 2 and gully foundation 6. The concrete strength of the whole structure is uniform, and the stress on the structure can be evenly distributed. The laser instrument is used for re-measurement and leveling. The concrete components are maintained for 12 hours under stable monitoring humidity and temperature conditions, and reflective plastic film is used for covering during this period. Apply 2-3 coats of epoxy coal tar anti-corrosion paint before installing the rain grate, and the next coating process can be carried out after the previous coat is air-dried.

[0041] Application Examples

[0042] 1. The applicant applies the technology of Example 1 to the treatment of the composite structure of the rainwater outlet of the road improvement project along the No. 5 rail transit line in a certain city. This section of road is a main urban road with a large motor vehicle traffic flow, and the number of medium and large vehicles accounts for 15%. The rainwater outlets on the motor vehicle lanes along the line have different degrees of sinking, deformation, and damage due to their long service time; and the local rainwater outlets are located above the municipal facility structure, forming a composite structure with a special combination form. After the implementation of the application example of the applicant, the above project has been completed and opened to traffic for more than one year. The pressure-bearing structure of the ditch-type rainwater outlet above the sewage box-shaped culvert here is still intact, showing good pressure-bearing performance, and has no effect on the use of the sewage box-shaped culvert below the rainwater outlet.

[0043] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A pressure-bearing side-ditch type rainwater inlet structure above a sewage box-shaped culvert, comprising a sewage box-shaped culvert (5) and a rainwater inlet, wherein the rainwater inlet is located at the top of the sewage box-shaped culvert (5), and is arranged at a lateral low-lying area of ​​a curbstone (1) where a motor vehicle lane meets a green belt or a sidewalk, the rainwater inlet comprising a rainwater inlet side wall (2), a rainwater inlet foundation (6), a rainwater inlet connecting pipe (7), a rainwater inlet water inlet grate (8), a well seat and a lintel (9), the rainwater inlet foundation (6) being arranged on the top surface of the top structure of the sewage box-shaped culvert (5), the rainwater inlet side wall (2) being arranged on the rainwater inlet foundation (6), the well seat and the lintel (9) being arranged on the top of the rainwater inlet side wall (2), the rainwater inlet connecting pipe (7) being connected to the space surrounded by the rainwater inlet side wall (2), and the rainwater inlet water inlet grate (8) being supported and sealed on the upper part of the well seat and the lintel (9), characterized in that: A waterproof layer (4) is laid between the top surface of the rainwater inlet foundation (6) and the top structure of the sewage box-shaped culvert (5), and inclined steel bars are arranged on the inner and outer sides of the bottom of the rainwater inlet side wall (2) to form a side arm structure (3) between the bottom of the rainwater inlet side wall (2) and the rainwater inlet foundation (6).

2. The pressure-bearing side-ditch rainwater inlet structure above the sewage box-shaped culvert according to claim 1 is characterized by: The gully side wall (2), gully foundation (6), well seat and lintel (9) are cast and formed by C30 concrete. The gully side wall (2), gully foundation (6), well seat and lintel (9) are all pre-buried with steel skeletons. The pre-buried steel skeletons in the gully side wall (2), gully foundation (6), well seat and lintel (9) are welded together. The two ends of the diagonal steel bars are welded together with the steel skeletons of the gully side wall (2) and gully foundation (6) corresponding to the steel skeletons of the gully side wall (2) and gully foundation (6).

3. The pressure-bearing side-ditch rainwater inlet structure above the sewage box-shaped culvert according to claim 1 is characterized by: The steel frame of the rainwater inlet foundation (6) adopts 26 C12 main bars in a single layer and in two directions; the steel frame of the rainwater inlet side wall (2) adopts 14 C14 steel bars, 14 A10 steel bars and 31 A6.5 stirrups; the steel frame of the well seat and the lintel (9) adopts 21 A10 steel bars, 31 A6.5 stirrups and 16 A6.5 tie bars.

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