Embankment structure based on perforated concrete and construction method

Abstract

The invention relates to an embankment structure based on perforated concrete and a construction method. The structure comprises a concrete bottom plate, a concrete top plate, a pavement layer and the perforated concrete, the perforated concrete is arranged between the concrete bottom plate and the concrete top plate, and the pavement layer is arranged on the concrete top plate; a plurality of holes are formed in the perforated concrete, a distance is reserved between the outer contours of every two adjacent holes, and the holes are formed through embedded pipelines. Compared with the prior art, the method has the advantages of stable and reliable structure, convenience in construction and the like.

Description

Technical Field

[0001] The invention relates to the field of transportation highway engineering, and in particular to an embankment structure based on perforated concrete and a construction method. Background Art

[0002] At present, there are two main types of embankment structures in the field of transportation engineering: earth-filled embankments and stone-filled embankments. When filling the roadbed, a slope of 1:1.5 to 1:2.0 is generally used. This embankment structure occupies a large area and has strict requirements on fillers and compaction. In actual projects, the roadbed is often unevenly compressed and deformed due to excessive filler particle size and insufficient roadbed compaction, which leads to quality problems such as cracking of the pavement structure. How to control the quality of traditional earth-filled embankments and stone-filled sections is also a key and difficult point in the engineering community. On the other hand, land resources are increasingly becoming a key factor restricting project construction. In the field of highway transportation, land is often saved by setting up bridges or retaining walls to reduce slopes, but the above structures are expensive and not suitable for large-scale promotion.

[0003] For example, a utility model with publication number CN219195513U discloses a novel soft soil foundation structure, including a reinforced concrete bottom plate, a hollow embankment and a reinforced concrete top plate, wherein the hollow embankment is between the reinforced concrete bottom plate and the reinforced concrete top plate, wherein the hollow embankment includes a plurality of stacked prefabricated circular culverts, each prefabricated circular culvert is fixed by cast concrete teeth, the reinforced concrete bottom plate is distributed on the upper end surface of the soft soil foundation, and the upper end surface of the reinforced concrete top plate is paved with asphalt or concrete pavement.

[0004] However, the above-mentioned prior art requires first pouring a concrete bottom plate, setting teeth on the bottom plate to fix the concrete culvert, and then pouring a reinforced concrete top plate. Although the fixing method is relatively simple, the safety is poor, and it is difficult to constrain the concrete culvert at the beginning and end of the roadbed, which is very likely to cause the concrete culvert to slide and fall off. The construction is difficult, the structural stability is poor, and the solution is difficult to implement. Moreover, the interior of the roadbed is a concrete culvert structure, and the gaps between the culverts are not filled. The middle part of the culvert bears six-point concentrated loads, which has a stress concentration problem, is prone to damage, and has safety hazards.

[0005] The above-mentioned roadbed has a concrete culvert structure inside, and the gaps between the culverts are not filled. The overall structure of the roadbed is relatively loose and the integrity is poor. The road is prone to large uneven settlement, affecting driving comfort. In addition, because the concrete culverts are stacked on each other, the stress conditions of the culverts at different positions vary greatly. If a culvert is damaged, the roadbed is prone to overall damage or large-scale collapse, which poses a great safety hazard.

[0006] In summary, the existing roadbed based on concrete culverts has great difficulty in construction, poor structural stability, and difficult to implement solutions. In addition, there is a concentrated load on the middle part of the culvert, which is easy to be damaged. In addition, the integrity between the culverts is poor. If a culvert is damaged, the roadbed will easily be damaged as a whole or collapse on a large scale, posing a great safety hazard. Summary of the invention

[0007] The purpose of the present invention is to overcome the defects of the above-mentioned prior art, such as the difficulty in constructing roadbed culverts, poor integrity between roadbed culverts and bearing concentrated loads, poor structural stability and safety, and to provide a roadbed structure and construction method based on open-hole concrete with stable structure and convenient construction.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] The present solution provides an embankment structure based on perforated concrete, comprising a concrete base plate, a concrete top plate, a pavement layer and perforated concrete; the perforated concrete is arranged between the concrete base plate and the concrete top plate, and the pavement layer is arranged on the concrete top plate; a plurality of holes are arranged on the perforated concrete, and a spacing is reserved between the outer contours of adjacent holes, and the holes are formed by pre-buried pipes.

[0010] Preferably, the pavement layer is an asphalt pavement layer.

[0011] Preferably, the concrete bottom plate is a plain concrete structure, and the concrete top plate is a reinforced concrete structure.

[0012] Preferably, the cross-sectional shape of the hole is circular, and the opening radius of the hole is in the range of 0.5-2 m.

[0013] Preferably, the pipe is made of high-density polyethylene or glass fiber reinforced plastic.

[0014] Preferably, the distance between the outer contours of adjacent holes is greater than 5 cm.

[0015] Preferably, the opening ratio of the embankment structure is in the range of 50%-80%.

[0016] The scheme also provides a construction method of an embankment structure based on open-hole concrete, comprising the following steps:

[0017] S1: Measure the bearing capacity of the foundation of the construction section, determine whether the foundation needs to be compacted or reinforced, and then level the foundation surface;

[0018] S2: Install positioning steel bars on the foundation surface and pour concrete base plate on the foundation surface;

[0019] S3: Install the pipeline on the positioning steel bars, and use the positioning steel bars to limit the pipeline laterally and vertically;

[0020] S4: Pour concrete around the pipe in layers and vibrate each layer of concrete;

[0021] S5: The pouring of the open hole concrete and the forming of the holes in each layer are completed by repeatedly installing the positioning steel bars, installing the pipes and pouring the concrete in layers;

[0022] S6: Install the pavement reinforcement mesh on the upper end surface of the open-hole concrete, and then pour the concrete top slab;

[0023] S7: Spread asphalt on the end surface of the concrete top slab and compact it.

[0024] Preferably, the positioning steel bar is an inverted U-shaped structure, the bending arc of the positioning steel bar matches the outer contour of the pipeline, and both ends of the positioning steel bar are anchored in the foundation or concrete.

[0025] Preferably, in S4, the height of each layer of concrete is less than or equal to 30 cm, and each layer of concrete is vibrated by a high-frequency vibrator after being poured. After the poured layer of concrete solidifies, the next layer of concrete is poured.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] (1) This scheme opens multiple holes on the main concrete structure of the embankment, and a certain interval is reserved between each hole, and the interval is filled with concrete. Compared with the existing roadbed structure based on the splicing of pipe culverts into the main body, the holes opened in the concrete body in this scheme can reduce the roadbed while maintaining the integrity of the open-hole concrete due to the intervals between each hole. The open-hole concrete does not have the problem of stress concentration, which improves the stability and safety of the structure; and the holes are formed by the pre-buried pipes, making the embankment structure construction more convenient.

[0028] (2) This scheme sets an asphalt pavement layer on the top of the embankment structure. The wheel load generated by the vehicle when driving first acts on the asphalt pavement layer. Since the asphalt pavement layer has a certain elasticity and diffusion capacity, the wheel load is initially diffused in the asphalt layer to form a relatively uniform distributed load. This stage of diffusion helps to reduce local stress concentration and improve the durability of the road surface.

[0029] (3) In this solution, positioning steel bars are used to position the pipeline and limit the lateral and vertical positions of the pipeline to avoid displacement of the pipeline during construction. The pipeline can be connected to the positioning steel bars by spot welding to further ensure the stability of the pipeline during the pouring process, as well as the accuracy of the hole position and the bearing capacity of the overall structure of the open-hole concrete.

[0030] (4) In this scheme, after the pipeline is positioned, the concrete around the pipeline is poured in layers, and the height of each concrete pouring is limited to ensure uniform vibration and full compaction of the concrete, to ensure that the concrete is tightly filled around the pipeline, to avoid bubbles and uncompacted areas, to ensure the reliability and stability of the open hole concrete structure, and the layered pouring makes it easy to control the position of the pipeline to form the channel.

[0031] (5) The embankment structure in this scheme is not prone to large tensile stress due to uneven settlement. The settlement amount and settlement difference are both within the controllable range and are not likely to cause stress concentration or structural damage. The roadbed maintains good stability as a whole, and the embankment structure can effectively cope with uneven settlement, which is very suitable for soft soil sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic longitudinal section diagram of the embankment structure provided by the present invention;

[0033] Figure 2 A flow chart of a construction method of an embankment structure based on open-hole concrete provided by the present invention;

[0034] Figure 3 This is a schematic diagram of the structure for installing the positioning steel bars in this embodiment;

[0035] Figure 4 This is a schematic diagram of the structure of pouring a concrete base plate in this embodiment;

[0036] Figure 5 This is a schematic diagram of the structure of the pipeline installation in this embodiment;

[0037] Figure 6 This is a schematic diagram of the structure of layered pouring of open-hole concrete in this embodiment;

[0038] Figure 7 This is a schematic diagram of the structure of installing positioning steel bars on the open hole concrete in this embodiment;

[0039] Figure 8 It is a schematic diagram of the structure of layered casting of the upper channel of the embankment structure in this embodiment;

[0040] Fig. 9 This is a schematic diagram of the structure after the perforated concrete pouring is completed in this embodiment;

[0041] Fig.10 This is a schematic diagram of the structure of pouring a concrete base plate in this embodiment;

[0042] Fig.11 This is a structural schematic diagram of the pavement construction in this embodiment;

[0043] In the figure: 1. Concrete base plate, 2. Concrete top plate, 3. Pavement layer, 4. Perforated concrete, 5. Holes, 6. Foundation, 7. Positioning steel bars, 8. Pipelines. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0048] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] Example 1

[0051] like Figure 1 As shown, this embodiment provides an embankment structure based on perforated concrete, including a concrete base plate 1, a concrete top plate 2, a pavement layer 3 and perforated concrete 4; the perforated concrete 4 is arranged between the concrete base plate 1 and the concrete top plate 2, and the pavement layer 3 is arranged on the concrete top plate 2; a plurality of holes 5 are provided on the perforated concrete 4, and a spacing is reserved between the outer contours of adjacent holes 5, and the holes 5 are formed by pre-buried pipes.

[0052] A plurality of holes 5 are opened on the main concrete structure of the embankment, and a certain interval is reserved between each hole 5, and the interval is filled with concrete. Compared with the existing roadbed structure based on the splicing of pipe culverts into the main body, the holes 5 are opened on the concrete main body in this solution, which can reduce the roadbed while maintaining the integrity of the open-hole concrete 4 due to the intervals between each hole 5. The open-hole concrete 4 does not have the problem of stress concentration, thereby improving the stability and safety of the structure; and the holes 5 are formed by the pre-buried pipes, making the embankment structure construction more convenient.

[0053] In a preferred embodiment, the pavement layer 3 is an asphalt pavement layer. The wheel load generated when the vehicle is running first acts on the asphalt pavement layer. Since the asphalt pavement layer has a certain elasticity and diffusion capacity, the wheel load is initially diffused in the asphalt layer to form a relatively uniform distributed load. The diffusion at this stage helps to reduce local stress concentration and improve the durability of the road surface.

[0054] The concrete bottom plate 1 is a plain concrete structure, and the concrete top plate 2 is a reinforced concrete structure.

[0055] Optionally, the cross-sectional shape of the hole 5 is circular, and the opening radius of the hole 5 is in the range of 0.5-2m. The spacing between the outer contours of adjacent holes 5 is greater than 5cm. The opening ratio of the embankment structure is in the range of 50%-80%. The specific size and opening ratio are adjusted according to actual engineering requirements.

[0056] In a preferred embodiment, the pipe is made of high-density polyethylene or glass fiber reinforced plastic. The material with high strength and good durability can maintain a stable shape during the layered pouring of concrete.

[0057] like Figure 2 The present embodiment further provides a construction method of an embankment structure based on open-hole concrete, comprising the following steps:

[0058] S1: Measure the bearing capacity of the foundation of the construction section, determine whether the foundation needs to be compacted or reinforced, and then level the foundation surface;

[0059] S2: Install positioning steel bars on the foundation surface and pour concrete base plate on the foundation surface;

[0060] S3: Install the pipeline on the positioning steel bars, and use the positioning steel bars to limit the pipeline laterally and vertically;

[0061] S4: Pour concrete around the pipe in layers and vibrate each layer of concrete;

[0062] S5: by repeatedly installing the positioning steel bars, installing the pipes and pouring the concrete in layers, the pouring of the open hole concrete 4 and the forming of the holes 5 in each layer are completed;

[0063] S6: Install a road surface steel mesh on the upper end surface of the perforated concrete 4, and then cast the concrete top plate 2;

[0064] S7: Lay asphalt on the upper end surface of the concrete top plate 2 and compact it.

[0065] The open-hole concrete lightweight roadbed can stand upright and occupies less area, which is particularly suitable for use in areas with complex terrain or land shortage. During the construction of the test section, the roadbed layout is more flexible, and there is no need for slope areas on both sides. The area occupied by the test section has been reduced by 63.3%. At the same time, this technology does not require a large amount of fill during construction, and the construction process is simple. Traditional lightweight roadbeds such as foamed concrete have the problem of poor water resistance, while the open-hole concrete lightweight roadbed forms a hole structure through pre-buried pipes, which effectively improves the drainage performance and avoids the damage of water accumulation to the roadbed. After multiple rainfalls, the test section has no obvious deformation of the roadbed and the drainage effect is good, which further verifies the water resistance and durability of the technology. The open-hole concrete lightweight roadbed overcomes the disadvantage of poor anti-floating stability of foamed concrete. In the actual application of the test section, the roadbed maintained good stability under water immersion (test water level 1.8 meters), without obvious floating and displacement, proving the reliability of the technology in high water level environment.

[0066] In a preferred embodiment, the positioning steel bar is an inverted U-shaped structure, the bending arc of the positioning steel bar matches the outer contour of the pipeline, and both ends of the positioning steel bar are anchored in the foundation or concrete.

[0067] Positioning steel bars are used to position the pipeline and limit the lateral and vertical positions of the pipeline to avoid displacement of the pipeline during construction. The pipeline can be connected to the positioning steel bars by spot welding to further ensure the stability of the pipeline during the pouring process, as well as the accuracy of the hole position and the bearing capacity of the overall structure of the open-hole concrete.

[0068] In a preferred embodiment, the height of each layer of concrete is less than or equal to 30 cm. After each layer of concrete is poured, it is vibrated by a high-frequency vibrator. After the poured layer of concrete solidifies, the next layer of concrete is poured.

[0069] After positioning the pipeline, the concrete around the pipeline is poured in layers, and the height of each concrete pouring is limited to ensure uniform vibration and full compaction of the concrete, to ensure that the concrete is tightly filled around the pipeline, to avoid bubbles and uncompacted areas, to ensure the reliability and stability of the open hole concrete structure, and the layered pouring makes it easy to control the position of the pipeline to form the channel.

[0070] In combination with the above preferred implementations, this embodiment provides a more specific construction method of an embankment structure, such as Figures 3 to 11 As shown:

[0071] Step 1: Ground preparation and ground leveling

[0072] Ground reinforcement: Conduct ground bearing capacity test and, if necessary, use compaction or ground reinforcement techniques, such as dynamic compaction, deep mixing, etc., to ensure the uniformity and stability of the ground.

[0073] Leveling: Use laser measurement tools to ensure the ground is leveled to design requirements and set appropriate drainage slopes to prevent water retention.

[0074] Step 2: Bury the lower hole positioning steel bars

[0075] Steel bar specifications and calculations: Structural engineers calculate the steel bar diameter and spacing based on the ground conditions and expected loads. Appropriate safety factors are used to ensure the steel bar's anti-floating and stability.

[0076] Rebar installation: Bend the rebar into an inverted U shape and ensure that both ends are sufficiently deep into the cushion concrete to provide the necessary anchoring force. Use spot welding or tying to ensure the stability of the rebar connection.

[0077] Step 3: Pour the concrete base slab

[0078] Concrete mix: Use the designed concrete mix to ensure adequate compressive strength and durability of the cushion. Consider adding an appropriate amount of cement enhancer or fiber to improve crack resistance.

[0079] Vibration and curing: Vibrate the concrete thoroughly to avoid voids and uneven compaction. Cover with wet cloth or use curing membrane as per standard to ensure that the concrete hardens gradually and reaches the required strength.

[0080] Step 4: Place the Lower Hole Pipe

[0081] Pipe material selection: Choose corrosion-resistant and easily removable materials such as high-density polyethylene (HDPE) or fiberglass reinforced plastic (FRP).

[0082] Positioning and fixing: Ensure that the pipe 8 is limited laterally and vertically by the positioning steel bars 7 to avoid displacement during construction. Spot welding is used to connect the positioning steel bars 7 to ensure their stability during the pouring process.

[0083] Step 5: Pour concrete around the first floor channel in layers

[0084] Layered pouring: Consider that the pouring height should not exceed 30cm each time to ensure uniform vibration and sufficient compaction of the concrete, while facilitating the control of the position of the channel.

[0085] Vibration technique: Use a high frequency vibrator to ensure that the concrete is packed tightly around the pipe 8, avoiding air bubbles and uncompacted areas.

[0086] Step 6-7: Circulate hole pouring and set upper reinforcement

[0087] Cycle process: Ensure that each layer of concrete reaches a certain strength before installing the upper layer of steel bars and pouring concrete to maintain the overall stability of the structure.

[0088] Quality inspection: After each layer is completed, a quality inspection is carried out, including the accuracy of the hole position and the density of the concrete.

[0089] Step 8: Install the pavement reinforcement mesh and pour the reinforced concrete top slab

[0090] Steel mesh arrangement: Ensure that the steel mesh is arranged as per the design requirements and covers the entire pavement to distribute the load and improve the overall strength of the top slab.

[0091] Top slab pouring: The top slab concrete should have high wear resistance and crack resistance, and be fully vibrated to achieve density and uniformity.

[0092] Step 9: Apply the pavement layer

[0093] Pavement layer material: Select asphalt mixture suitable for local climate and traffic conditions.

[0094] Paving and compaction: After the asphalt is laid, it is compacted several times using a roller to ensure uniformity and durability of the pavement layer.

[0095] Among them, during the construction process, the use of steel bars to fix the channel can effectively improve the stability of the channel and ensure the accuracy and stability during the concrete pouring process. The specifications of the steel bars should be selected according to the diameter of the channel and the design requirements. The commonly used steel bar diameter is 8-12 mm, and the specific specifications need to be determined according to the project requirements and the channel size. When the steel bars fix the channel, the spacing of the steel bars should be reasonably arranged according to the design requirements. Generally, the spacing of the steel bars should be between 300-1000 mm to ensure that the channel remains stable during the pouring of concrete. The positioning steel bars should consider the buoyancy generated by the pipeline during the pouring process and perform strength verification. During installation, the positioning steel bars can be disconnected first, and the bottom hook is pre-embedded in the lower layer of concrete. After the pipeline is placed, the pipeline is buckled and the positioning steel bars are connected by spot welding. When fixing the steel bars, the staggered arrangement method should be adopted to increase the stability and shear resistance of the overall structure. The staggered steel bars should be symmetrically distributed on both sides of the channel to ensure uniform force. After the steel bars are fixed, a quality inspection should be carried out to ensure that the steel bars are firmly fixed and accurately positioned. The inspection content includes the spacing of steel bars, fixing methods, supporting structures, etc.

[0096] Furthermore, the pipe material should be selected with high strength and good durability, usually PVC pipe or HDPE steel belt reinforced plastic corrugated pipe. The pipe should have sufficient strength to maintain stable shape during the layered pouring of concrete. The pipe is firmly fixed by positioning steel bars during the construction process to prevent displacement during concrete pouring. The arrangement of the pipes should be reasonably arranged according to the design requirements to ensure the drainage effect and the weight reduction effect of the roadbed. The spacing between the pipes should be adjusted according to the specific project requirements to ensure that the concrete has sufficient vibration space, usually more than 5cm.

[0097] The roadbed structure obtained by the above construction method has a good stress state and is not prone to large tensile stress due to uneven settlement. The settlement amount and settlement difference are both within the controllable range and are not prone to stress concentration or structural damage. The roadbed maintains good stability as a whole, and the embankment structure can effectively cope with uneven settlement.

[0098] The open-hole concrete lightweight roadbed structure is reasonable and reliable. Neither temperature stress nor stress caused by uneven settlement will have a significant impact on the roadbed structure. The structural design successfully achieves uniformity and stability of stress distribution while ensuring the lightweight of the roadbed. The open-hole concrete lightweight roadbed performs well in stress control and structural stability. The roadbed structure maintains a good stress control effect, ensuring the safety and durability of the roadbed structure.

[0099] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. An embankment structure based on open-cell concrete, characterized in that: The invention comprises a concrete bottom plate (1), a concrete top plate (2), a paving layer (3) and open-hole concrete (4); the open-hole concrete (4) is arranged between the concrete bottom plate (1) and the concrete top plate (2), and the paving layer (3) is arranged on the concrete top plate (2); a plurality of holes (5) are arranged on the open-hole concrete (4), and a spacing is reserved between the outer contours of adjacent holes (5); the holes (5) are formed by pre-buried pipes.

2. The embankment structure based on open-hole concrete according to claim 1, characterized in that: The pavement layer (3) is an asphalt pavement layer.

3. The embankment structure based on open-hole concrete according to claim 1, characterized in that: The concrete bottom plate (1) is a plain concrete structure, and the concrete top plate (2) is a reinforced concrete structure.

4. The embankment structure based on open-hole concrete according to claim 1, characterized in that: The cross-sectional shape of the hole (5) is circular, and the opening radius of the hole (5) is in the range of 0.5-2 m.

5. The embankment structure based on open-hole concrete according to claim 4, characterized in that: The material of the pipe is high-density polyethylene or glass fiber reinforced plastic.

6. The embankment structure based on open-hole concrete according to claim 1, characterized in that: The distance between the outer contours of adjacent holes (5) is greater than 5 cm.

7. The embankment structure based on open-hole concrete according to claim 1, characterized in that: The opening ratio of the embankment structure ranges from 50% to 80%.

8. A construction method of an embankment structure based on open-hole concrete according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: Measure the bearing capacity of the foundation of the construction section, determine whether the foundation needs to be compacted or reinforced, and then level the foundation surface; S2: Install positioning steel bars on the foundation surface and pour concrete base plate on the foundation surface; S3: Install the pipeline on the positioning steel bars, and use the positioning steel bars to limit the pipeline laterally and vertically; S4: Pour concrete around the pipe in layers and vibrate each layer of concrete; S5: by repeatedly installing the positioning steel bars, installing the pipes and pouring the concrete in layers, the pouring of the open hole concrete (4) and the forming of the holes (5) in each layer are completed; S6: installing a road surface steel mesh on the upper end surface of the perforated concrete (4), and then pouring the concrete top plate (2); S7: Spread asphalt on the upper end surface of the concrete top plate (2) and compact it.

9. The construction method according to claim 8, characterized in that: The positioning steel bar is an inverted U-shaped structure, the bending arc of the positioning steel bar matches the outer contour of the pipeline, and both ends of the positioning steel bar are anchored in the foundation or concrete.

10. The construction method according to claim 8, characterized in that: In S4, the height of each layer of concrete is less than or equal to 30 cm. After each layer of concrete is poured, it is vibrated by a high-frequency vibrator. After the poured layer of concrete solidifies, the next layer of concrete is poured.

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