Permeable embankment and construction method of permeable embankment

Abstract

The present application relates to a permeable embankment and a construction method for a permeable embankment, and relates to the field of road engineering. The permeable embankment includes an embankment foundation, including a foundation body and a plurality of pipe piles, wherein the foundation body is a reinforced concrete structure, and a plurality of the pipe piles are buried in the foundation body, and the plurality of the pipe piles are arranged in a vertical direction; a roadbed, which is arranged above the embankment foundation; and a plurality of circular culverts, wherein the plurality of the circular culverts are arranged in the roadbed along the width direction of the roadbed, and the plurality of the circular culverts are arranged at intervals along the extension direction of the roadbed, and the circular culverts are tubular structures with openings at both ends, and the openings at both ends of the circular culverts are connected to the outside world. The permeable embankment of the present application has good stability in use and a long service life.

Description

Technical Field

[0001] The present application relates to the field of road engineering, and in particular to a permeable embankment and a construction method for a permeable embankment. Background Art

[0002] With the development of social economy and the increasing frequency of people's economic activities, the construction density of coastal projects has increased accordingly. The problems of mutual influence, interference and restriction between coastal projects, especially road construction projects in coastal areas, and the ocean and coastline have become increasingly serious and complex.

[0003] At the same time, with the introduction of new national and social policies on the control of marine waters and increasingly stringent environmental protection requirements, traditional reclamation embankments can no longer meet the requirements of the new policies. The preparation period required before the construction of reclamation embankments in sea areas is long, the construction progress is slow, and the stability and service life of the reclamation embankments cannot be guaranteed, requiring a lot of manpower and material resources to maintain. Summary of the Invention

[0004] The purpose of this application is to provide a permeable embankment and a construction method of a permeable embankment, which can be suitable for coastal highway construction.

[0005] On the one hand, the present application provides a permeable embankment, which includes: an embankment foundation, including a foundation body and a plurality of pipe piles, the foundation body is a reinforced concrete structure, the plurality of pipe piles are buried in the foundation body, and the plurality of pipe piles are arranged along the vertical direction; a roadbed, arranged above the embankment foundation; a plurality of circular culverts, the plurality of circular culverts are arranged in the roadbed along the width direction of the roadbed, and the plurality of circular culverts are arranged at intervals along the extension direction of the roadbed, the circular culverts are tubular structures with openings at both ends, and the openings at both ends of the circular culvert are connected to the outside world.

[0006] The permeable embankment of this application utilizes multiple circular culverts installed within the roadbed, each of which is connected to the outside world at both ends. This allows water to flow through the culverts, effectively passing through both sides of the roadbed, without causing erosion or other impacts on the embankment foundation or subgrade. This ensures the permeable embankment's excellent operational stability and long service life. Furthermore, the embankment's foundation is constructed of reinforced concrete, ensuring sufficient support for the roadbed and the multiple circular culverts. This prevents subsidence of the roadbed and the resulting rupture and damage of the circular culverts, further ensuring the permeable embankment's excellent stability and long service life.

[0007] In some embodiments of the present application, the distance between the central axes of two adjacent circular culverts is greater than or equal to 3 m and less than or equal to 5 m.

[0008] In the above scheme, this setting method, on the one hand, the distance between two adjacent circular culverts is moderate, which ensures the ability of the circular culvert to pass water, and thus ensures the permeability of the permeable embankment, that is, ensures that the permeable embankment has good stability. On the other hand, there is sufficient gap between the two adjacent circular culverts, so that the permeable embankment will not have stress concentration and insufficient support problems due to the overly dense arrangement of the circular culverts. There is enough space between the two adjacent circular culverts for filling or casting supporting structures, thereby ensuring that the permeable embankment has good stability.

[0009] In some embodiments of the present application, each of the circular culverts includes a first open end and a second open end, and the permeable embankment also includes: a first side wall, which is arranged on one side of the roadbed along the width direction of the roadbed, and the first side wall is provided with a first through hole, and the first through hole extends along the width direction of the roadbed and penetrates the first side wall, and the first open end of a circular culvert is passed through one of the first through holes and communicates with the outside world; a second side wall, which is arranged on the other side of the roadbed along the width direction of the roadbed, and the first side wall is provided with a second through hole, and the second through hole extends along the width direction of the roadbed and penetrates the second side wall, and the second open end of a circular culvert is passed through one of the second through holes and communicates with the outside world.

[0010] In the above solution, the first and second side walls are respectively arranged on either side of the roadbed in the width direction. Both the first and second side walls support the roadbed, ensuring that the roadbed does not collapse along its width. Furthermore, the first through hole in the first side wall and the second through hole in the second side wall not only position the circular culvert, but also provide a mounting location for the culvert and provide a certain degree of support for the culvert.

[0011] In some embodiments of the present application, the first side wall and the second side wall are both reinforced concrete structures, and the first side wall and the second side wall both include stirrups, the stirrups are arranged along the circumference of the first through hole and connected to the reinforcement of the first side wall, and the stirrups are arranged along the circumference of the second through hole and connected to the reinforcement of the second side wall.

[0012] In the above scheme, the stirrups are connected to the reinforcement of the first side wall along the circumference of the first through hole, and the stirrups are connected to the reinforcement of the second side wall along the circumference of the second through hole. After the first side wall and the second side wall are cast into a reinforced concrete structure, the stirrups can support the first through hole, avoid stress concentration at the first through hole, ensure that the first through hole will not collapse, and further ensure that the circular culvert arranged at the first through hole will not be damaged. The stirrups can support the second through hole, avoid stress concentration at the second through hole, ensure that the second through hole will not collapse, and further ensure that the circular culvert arranged at the second through hole will not be damaged.

[0013] In some embodiments of the present application, the first side wall and the second side wall are both reinforced concrete structures, side wall reinforcement ribs are provided between the reinforcement of the foundation body and the reinforcement of the first side wall, and between the foundation body and the second side wall, and pipe pile reinforcement ribs are provided between the reinforcement of each pipe pile buried in one end of the foundation body and the reinforcement of the foundation body.

[0014] In the above solution, the reinforcement of the foundation body and the reinforcement of the first side wall are connected as a whole via the side wall reinforcement bars, and the reinforcement of the foundation body and the reinforcement of the second side wall are connected as a whole via the side wall reinforcement bars. This ensures the stability of the connection between the first side wall and the foundation body, and the stability of the connection between the second side wall and the foundation body, thereby providing the permeable embankment with strong stability. At the same time, the reinforcement of the foundation body and the reinforcement of the pipe piles embedded in the foundation body are connected as a whole via the pipe pile reinforcement bars, thus providing the embankment foundation with good integrity and ensuring the stability of the connection between the foundation body and the multiple pipe piles, thereby providing the permeable embankment with strong stability.

[0015] In some embodiments of the present application, each of the circular culverts includes at least one pipe segment. When the circular culvert includes multiple pipe segments, the multiple pipe segments are connected in sequence along the width direction of the roadbed, and cement mortar strips are provided between adjacent pipe segments.

[0016] In the above scheme, this setting method, on the one hand, facilitates the unified production and manufacturing of pipe segments, reduces manufacturing costs, and improves production efficiency. On the other hand, when the circular culvert includes multiple pipe segments, it is convenient to install the circular culvert, thereby improving the installation efficiency of the circular culvert.

[0017] In some embodiments of the present application, the permeable embankment further includes: a first guardrail installed above the first side wall; and a second guardrail installed above the second side wall.

[0018] In the above solution, the first guardrail and the second guardrail can protect pedestrians and vehicles and prevent them from entering the outside of the first guardrail and the second guardrail.

[0019] In some embodiments of the present application, the roadbed includes an installation layer and a stabilization layer. The installation layer is arranged above the basic body. The installation layer forms an installation position. One circular culvert is installed at one installation position. The stabilization layer is arranged above the installation layer and filled between adjacent circular culverts.

[0020] In the above solution, the installation layer provides a mounting location for the circular culvert, providing a certain degree of positioning and limiting for the culvert, preventing movement during installation and reducing the installation difficulty. Furthermore, the stabilization layer, placed between adjacent circular culverts, provides support and disperses the extrusion forces exerted on the culverts, preventing deformation and damage.

[0021] In some embodiments of the present application, the roadbed further includes a slag layer, which is laid above the stabilization layer.

[0022] In the above scheme, the slag is used as roadbed backfill to form a slag layer, which fully utilizes construction resources, reduces the generation of construction waste, reduces the impact on the environment, and effectively controls costs.

[0023] In some embodiments of the present application, a first drainage hole is provided in an area corresponding to the first side wall and the slag layer, a first drainage net is provided between the first side wall and the slag layer, and the first drainage net covers the first drainage hole; a second drainage hole is provided in an area corresponding to the second side wall and the slag layer, a second drainage net is provided between the second side wall and the slag layer, and the second drainage net covers the second drainage hole.

[0024] In the above scheme, the first drainage hole and the second drainage hole are used to drain the accumulated water on the roadbed to avoid large-scale water accumulation on the roadbed and affecting the passability of the permeable embankment. The first drainage net is set at the first drainage hole and the second drainage net is set at the second drainage hole, which can prevent the roadbed filler filled in the slag layer from being discharged through the first drainage hole and the second drainage hole, thereby improving the stability of the slag layer and further improving the stability and service life of the permeable embankment.

[0025] In some embodiments of the present application, the permeable embankment further includes: a road surface, including an asphalt concrete surface layer and a concrete base layer, the concrete base layer is arranged above the slag layer, and the asphalt concrete surface layer is arranged above the concrete base layer.

[0026] In the above scheme, the road surface is laid on top of the slag layer for vehicles and pedestrians to pass through. Among them, the concrete base layer plays a role of support and leveling, while the asphalt concrete surface layer has good permeability and durability.

[0027] On the other hand, the present application also provides a construction method for a permeable embankment, which comprises: digging a foundation pit, setting fixed feet on both sides of the foundation pit in the width direction; laying a crushed stone layer on the surface of the foundation pit, and pouring a concrete adjustment layer, reserving pipe pile setting positions on the concrete adjustment layer; setting the pipe piles at corresponding pipe pile setting positions, setting the pipe piles in the vertical direction, and the upper ends of the pipe piles extending out of the concrete adjustment layer; arranging the reinforcement of the foundation body above the concrete adjustment layer, welding part of the reinforcement of the foundation body to the exposed reinforcement of the pipe piles, and welding another part of the reinforcement of the foundation body to the exposed reinforcement of the pipe piles through the pipe pile reinforcement, and the reinforcement of the foundation body Reinforce the side walls and weld them together; arrange the side wall reinforcement on both sides of the foundation body in the width direction, and weld the side wall reinforcement to the side wall reinforcement; pour concrete to form the foundation body and part of the side wall, and after pouring, the side wall will have a circular culvert installation position; place the circular culvert at the installation position of the circular culvert, and apply asphalt on the outer circumference of the circular culvert; pour concrete to form the installation layer and another part of the side wall; pour concrete on top of the circular culvert so that the concrete covers the circular culvert and forms a stabilization layer; open drainage holes on the side wall, and set up drainage nets at the drainage holes; backfill the slag above the stabilization layer, and pave the road surface above the slag; install guardrails above the side wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A cross-sectional view of a permeable embankment provided in one embodiment of the present application;

[0030] Figure 2 A cross-sectional view of the extension direction of the side wall provided in one embodiment of the present application;

[0031] Figure 3 A schematic diagram of providing stirrups according to an embodiment of the present application;

[0032] Figure 4 A schematic diagram of the reinforcement of the foundation body and side walls provided in one embodiment of the present application;

[0033] Figure 5 A schematic diagram of a pipe joint connection provided in one embodiment of the present application;

[0034] Figure 6 A schematic diagram of a guardrail provided in one embodiment of the present application;

[0035] Figure 7 A flowchart of a construction method for a permeable embankment provided in one embodiment of the present application.

[0036] Icons: 1-permeable embankment; 11-embankment foundation; 111-foundation body; 112-pile; 1121-pile reinforcement; 113-fixed foot; 114-gravel layer; 115-adjustment layer; 12-roadbed; 121-installation layer; 1211-installation position; 122-stabilization layer; 123-slag layer; 13-circular culvert; 131-first opening end; 132-second opening end; 133-pipe section; 1331-cement mortar strip; 141-first side wall; 1411 -First through hole; 1412-First drainage hole; 1413-First drainage net; 142-Second side wall; 1421-Second through hole; 1422-Second drainage hole; 1423-Second drainage net; 143-Stirrups; 144-Side wall reinforcement; 151-First guardrail; 1511-Guardrail base; 1512-Embedded junction box; 1513-Guardrail body; 152-Second guardrail; 16-Pavement surface; 161-Asphalt concrete surface layer; 162-Concrete base layer; 17-Platform. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0039] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0040] With the development of social economy and the increasing frequency of people's economic activities, the construction density of coastal projects has increased accordingly. The problems of mutual influence, interference and restriction between coastal projects, especially road construction projects in coastal areas, and the ocean and coastline have become increasingly serious and complex.

[0041] At the same time, with the introduction of new national and social policies on the control of marine waters and increasingly stringent environmental protection requirements, traditional reclamation embankments can no longer meet the requirements of the new policies. The preparation period required before the construction of reclamation embankments in sea areas is long, the construction progress is slow, and the stability and service life of the reclamation embankments cannot be guaranteed, requiring a lot of manpower and material resources to maintain.

[0042] To address the problems of traditional land reclamation embankments, bridges are currently often used to cross coastal waters. However, to meet the flood control design requirements of the bridges, a large drop occurs at the intersection of the bridgehead and the existing road, making it impossible to ensure a smooth connection between the bridge and the existing road. This reduces the efficiency of vehicle and pedestrian travel and seriously affects the road's distribution function. In addition, building bridges along the coastline in coastal waters will inevitably lead to the bridges crossing densely populated residential areas, which not only affects the safety of the residential areas, but also affects the lighting of the houses along the residential areas due to the bridge's excessive height, affecting the normal life of the residents along the route.

[0043] To address the aforementioned issues and the short service life of traditional reclamation embankments, the inventors conducted research and designed a permeable embankment. This permeable embankment incorporates multiple circular culverts within the roadbed, allowing seawater to pass through, thus preventing erosion of the roadbed and embankment foundation. Furthermore, the embankment foundation is constructed of reinforced concrete, providing excellent support and reducing the risk of damage to the circular culverts.

[0044] In the coastal waters where the permeable embankment is used as a road construction project, on the one hand, the construction progress is fast and the construction efficiency is high, and the roadbed and embankment foundation of the permeable embankment are not easily affected by seawater erosion and have good stability, which reduces the cost of later maintenance, and the service life of the permeable embankment is long. On the other hand, the elevation of the permeable embankment is consistent with the surrounding existing roads, which is not only convenient for connection with the surrounding existing roads, but also will not affect the safety and lighting effects of residential areas.

[0045] It should be noted that the permeable embankment of the present application can be applied not only to road construction projects in coastal sea areas, but also to road construction projects in any waterside areas such as riverside areas, riverside areas and lakeside areas.

[0046] The permeable embankment of the present application will be described in detail below with reference to the accompanying drawings.

[0047] Please refer to Figure 1 , Figure 1 The cross-sectional view of the permeable embankment 1 according to some embodiments of the present application is shown in FIG. In one aspect, the present application provides a permeable embankment 1 , which includes an embankment foundation 11 , a roadbed 12 , and a plurality of circular culverts 13 .

[0048] Please refer to Figure 1 , and further reference Figure 2 , Figure 2 This is a cross-sectional view of the extension direction of the side wall of this application. Figure 1 As shown, the embankment foundation 11 includes a foundation body 111 and a plurality of pipe piles 112. The foundation body 111 is a reinforced concrete structure. The plurality of pipe piles 112 are buried in the foundation body 111, and the plurality of pipe piles 112 are arranged in the vertical direction. The roadbed 12 is arranged above the embankment foundation 11, and a plurality of circular culverts 13 are arranged in the roadbed 12 along the width direction of the roadbed 12. Figure 2 As shown, a plurality of circular culverts 13 are spaced apart along the extending direction of the roadbed 12. The circular culverts 13 are tubular structures with openings at both ends, and the openings at both ends of the circular culvert 13 are both connected to the outside.

[0049] Foundation body 111 is a reinforced concrete structure, meaning that foundation body 111 includes reinforcement, and concrete is poured outside the reinforcement to form foundation body 111. For example, foundation body 111 can be cast in-situ using C45 marine concrete, with settlement joints of 2 cm wide and filled with asphalt hemp every 20 meters.

[0050] In addition, depending on the type of foundation and the location of the road section, the pipe piles 112 can be prestressed pipe piles or bored cast-in-place pipe piles. For example, prestressed pipe piles can be used in non-mountainous sections of underwater terrain, while bored cast-in-place pipe piles can be used in mountainous sections of underwater terrain.

[0051] Specifically, the prestressed pipe piles are prefabricated pipe piles 112, which include prestressed pipe pile reinforcement. Concrete is poured outside the prestressed pipe pile reinforcement to form the prestressed pipe piles. When installing the pipe piles 112, the prestressed pipe piles are driven into the soil layer using a tamping machine. At one end of the prestressed pipe pile buried in the foundation body 111, the prestressed pipe pile reinforcement can be partially exposed at the end of the prestressed pipe pile to facilitate welding of the prestressed pipe pile reinforcement to the foundation body 111 reinforcement. In addition, pipe pile reinforcement ribs 1121 can be provided between the prestressed pipe pile reinforcement and the foundation body 111 reinforcement as anchor bars to further improve the connection stability between the prestressed pipe pile and the foundation body 111.

[0052] Specifically, the bored cast-in-place pipe pile is drilled at the location where the pipe pile 112 is required to be set, the reinforcement of the bored cast-in-place pipe pile is arranged at the location of the drilled hole, and concrete is poured to form the bored cast-in-place pipe pile. When drilling, in order to avoid the borehole from collapsing, mud can be poured into the borehole to ensure that there is sufficient pressure in the borehole. A steel casing should also be set on the inner wall of the borehole to avoid mud loss and ensure the quality of the hole. Among them, when casting the bored cast-in-place pipe pile, the bored cast-in-place pipe pile is buried at one end of the foundation body 111, and the reinforcement of the bored cast-in-place pipe pile can be partially exposed at the end of the bored cast-in-place pipe pile to facilitate welding of the reinforcement of the bored cast-in-place pipe pile with the reinforcement of the foundation body 111. In addition, pipe pile reinforcement ribs 1121 can be set between the reinforcement of the bored cast-in-place pipe pile and the reinforcement of the foundation body 111 as anchor bars to further improve the connection stability between the bored cast-in-place pipe pile and the foundation body 111.

[0053] It should be noted that, no matter whether prestressed pipe piles or bored cast-in-place pipe piles are used, the concrete used for pouring when forming the pipe piles 112 can be C35 marine concrete to ensure sufficient strength and corrosion resistance.

[0054] In some embodiments of the present application, the embankment foundation 11 may further include a fixed foot 113, a crushed stone layer 114, and an adjustment layer 115. Exemplarily, the fixed foot 113 is arranged on both sides of the width direction of the foundation body 111, and is used to provide a certain degree of stable support for the surrounding area of ​​the foundation after the foundation is excavated. The fixed foot 113 may be a piece of stone fixed foot. The crushed stone layer 114 is used to be laid on the foundation surface after the foundation is excavated to play the role of compacting the foundation, and the adjustment layer 115 is a concrete layer poured on the crushed stone layer 114. Optionally, the adjustment layer 115 may be a C20 plain concrete cushion layer. Exemplarily, the thickness of the crushed stone layer 114 may be 0.9m, and the thickness of the adjustment layer 115 may be 0.1m.

[0055] It should be understood that the circular culvert 13 is a culvert structure used for draining the roadbed 12. To achieve water permeability, the circular culvert 13 should have openings at both ends, and both openings should be connected to the outside world, so that water can pass through the circular culvert 13 along the width of the roadbed 12. Exemplarily, the circular culvert 13 is a prefabricated reinforced concrete structure, for example, cast using C25 marine concrete.

[0056] Multiple circular culverts 13 are spaced apart along the extension direction of the roadbed 12. The spacing between adjacent circular culverts 13 can be adjusted based on the varying permeability requirements of different road sections. The spacing between adjacent circular culverts 13 refers to the distance between the central axes of the two adjacent circular culverts 13. For example, in sections with higher permeability requirements, the spacing between adjacent circular culverts 13 can be appropriately reduced, i.e., the circular culverts 13 can be arranged more densely. In sections with lower permeability requirements, the spacing between adjacent circular culverts 13 can be appropriately increased to improve the stability of the permeable embankment 1.

[0057] The permeable embankment 1 of the present application, by disposing multiple circular culverts 13 within the roadbed 12, with both ends of each circular culvert 13 connected to the outside world, allows water to pass through the circular culverts 13, that is, water can pass through the circular culverts 13 to both sides of the roadbed 12 without causing erosion or other effects on the embankment foundation 11 and the roadbed 12, thereby ensuring that the permeable embankment 1 has good operational stability and a long service life. Furthermore, the foundation body 111 of the embankment foundation 11 is a reinforced concrete structure, ensuring that the foundation body 111 has sufficient support strength for the roadbed 12 and the multiple circular culverts 13, thereby preventing the roadbed 12 from sinking and the circular culverts 13 from rupturing and damaging due to the sinking of the roadbed 12, further ensuring that the permeable embankment 1 has good stability and a long service life.

[0058] In some embodiments of the present application, the distance between the central axes of two adjacent circular culverts 13 is greater than or equal to 3 m and less than or equal to 5 m.

[0059] Optionally, the distance between the central axes of two adjacent circular culverts 13 is 3 m, or 4 m, or 5 m, or between 3-5 m.

[0060] For example, the inner diameter of the circular culvert 13 is 2 m, the wall thickness is 0.2 m, and the distance between the central axes of two adjacent circular culverts 13 is 4 m.

[0061] With this arrangement, on the one hand, the spacing between two adjacent circular culverts 13 is moderate, which ensures the ability of the circular culverts 13 to pass water, thereby ensuring the permeability of the permeable embankment 1, that is, ensuring that the permeable embankment 1 has good stability. On the other hand, there is sufficient gap between two adjacent circular culverts 13, so that the permeable embankment 1 will not have stress concentration and insufficient support problems due to the overly dense arrangement of the circular culverts 13. There is enough space between two adjacent circular culverts 13 for filling or casting supporting structures, thereby ensuring that the permeable embankment 1 has good stability.

[0062] like Figure 1As shown, in some embodiments of the present application, each circular culvert 13 includes a first open end 131 and a second open end 132, and the permeable embankment 1 also includes: a first side wall 141, which is arranged on one side of the roadbed 12 along the width direction of the roadbed 12, and the first side wall 141 is provided with a first through hole 1411, and the first through hole 1411 extends along the width direction of the roadbed 12 and penetrates the first side wall 141, and the first open end 131 of a circular culvert 13 is passed through a first through hole 1411 and communicates with the outside world; the second side wall 142 is arranged on the other side of the roadbed 12 along the width direction of the roadbed 12, and the first side wall 141 is provided with a second through hole 1421, and the second through hole 1421 extends along the width direction of the roadbed 12 and penetrates the second side wall 142, and the second open end 132 of a circular culvert 13 is passed through a second through hole 1421 and communicates with the outside world.

[0063] It should be understood that the first side wall 141 and the second side wall 142 are respectively arranged at the two ends of the width direction of the roadbed 12. In order to ensure that the two ends of the circular culvert 13 can be connected with the outside world, the first side wall 141 should be provided with a first through hole 1411 for the first open end 131 of the circular culvert 13 to pass through, and the second side wall 142 should be provided with a second through hole 1421 for the second open end 132 of the circular culvert 13 to pass through, ensuring that the first side wall 141 will not block the first open end 131 of the circular culvert 13, and the second side wall 142 will not block the second open end 132 of the circular culvert 13.

[0064] In this configuration, the first side wall 141 and the second side wall 142 are respectively disposed on either side of the roadbed 12 in the width direction. Both the first side wall 141 and the second side wall 142 support the roadbed 12, ensuring that the roadbed 12 does not collapse along its width. Furthermore, the first through hole 1411 defined in the first side wall 141 and the second through hole 1421 defined in the second side wall 142 not only position the circular culvert 13, but also provide a mounting location 1211 for the circular culvert 13 and provide a certain degree of support for the circular culvert 13.

[0065] Please refer to Figure 1 , and further reference Figure 3 , Figure 3 Schematic diagram of setting stirrups in some embodiments of the present application. Figure 3 As shown, in some embodiments of the present application, the first side wall 141 and the second side wall 142 are both reinforced concrete structures, and the first side wall 141 and the second side wall 142 both include stirrups 143, the stirrups 143 are arranged along the circumference of the first through hole 1411 and connected to the reinforcement of the first side wall 141, and the stirrups 143 are arranged along the circumference of the second through hole 1421 and connected to the reinforcement of the second side wall 142.

[0066] It should be understood that the first side wall 141 is a reinforced concrete structure, that is, the first side wall 141 includes reinforcement, and concrete is poured outside the reinforcement of the first side wall 141 to form the first side wall 141. For example, the first side wall 141 can be cast in-situ using C45 marine concrete, with a settlement joint every 20 meters, a width of 2 cm, and filled with asphalt hemp.

[0067] Similarly, the second side wall 142 is a reinforced concrete structure, that is, the second side wall 142 includes reinforcement, and concrete is poured outside the reinforcement to form the second side wall 142. For example, the second side wall 142 can be cast in-situ using C45 marine concrete, with a settlement joint every 20 meters. The settlement joint is 2 cm wide and filled with asphalt hemp.

[0068] It should be noted that when laying out the reinforcement of the first side wall 141 and the second side wall 142, it is necessary to reserve a location for the first through hole 1411 in the first side wall 141, and a location for the second through hole 1421 in the second side wall 142. In addition, to improve the stability of the first side wall 141 and the second side wall 142, the density of the reinforcement at the locations where the first through hole 1411 is provided in the first side wall 141 and the second through hole 1421 is provided in the second side wall 142 can be appropriately increased.

[0069] Furthermore, since the permeable embankment 1 includes multiple circular culverts 13, and the distance between the central axes of two adjacent circular culverts 13 is small, and the first side wall 141 needs to open multiple first through holes 1411 corresponding to the multiple circular culverts 13, and the second side wall 142 needs to open multiple second through holes 1421 corresponding to the multiple circular culverts 13, in order to avoid stress concentration at the positions of the first through holes 1411 and the second through holes 1421, which causes the first through holes 1411 and the second through holes 1421 to collapse, stirrups 143 are provided at the positions of the first through holes 1411 and the second through holes 1421 to provide a certain support for the first through holes 1411 and the second through holes 1421.

[0070] Specifically, one or more stirrups 143 may be provided at the position of the first through hole 1411, and the stirrups 143 are welded to the reinforcement of the first side wall 141. For example, Figure 3 As shown, three stirrups 143 may be provided at the location of the first through hole 1411 to ensure that the stirrups 143 provide strong support for the first through hole 1411. Similarly, one or more stirrups 143 may be provided at the location of the second through hole 1421, and the stirrups 143 are welded to the reinforcement of the second side wall 142. For example, as shown in the figure, three stirrups 143 may be provided at the location of the second through hole 1421 to ensure strong support for the second through hole 1421.

[0071] In this arrangement, the stirrups 143 are connected to the reinforcement of the first side wall 141 along the circumference of the first through hole 1411, and the stirrups 143 are connected to the reinforcement of the second side wall 142 along the circumference of the second through hole 1421. After the first side wall 141 and the second side wall 142 are cast into a reinforced concrete structure, the stirrups 143 can support the first through hole 1411, avoid stress concentration at the first through hole 1411, ensure that the first through hole 1411 will not collapse, and further ensure that the circular culvert 13 arranged at the first through hole 1411 will not be damaged, and the stirrups 143 can support the second through hole 1421, avoid stress concentration at the second through hole 1421, ensure that the second through hole 1421 will not collapse, and further ensure that the circular culvert 13 arranged at the second through hole 1421 will not be damaged.

[0072] Please refer to Figure 1 , and further reference Figure 4 , Figure 4 Schematic diagram of the reinforcement of the foundation body and side walls of some embodiments of the present application. Figure 4 As shown, in some embodiments of the present application, the first side wall 141 and the second side wall 142 are both reinforced concrete structures, and side wall reinforcement ribs 144 are provided between the reinforcement of the foundation body 111 and the reinforcement of the first side wall 141, as well as between the foundation body 111 and the second side wall 142. Pipe pile reinforcement ribs 1121 are provided between the reinforcement of one end of each pipe pile 112 buried in the foundation body 111 and the reinforcement of the foundation body 111.

[0073] It should be understood that the foundation body 111, the first side wall 141, the second side wall 142 are all reinforced concrete structures. In order to ensure that the permeable embankment 1 has strong integrity, side wall reinforcement 144 can be set between the foundation body 111 and the first side wall 141 and the second side wall 142. The two ends of the side wall reinforcement 144 are respectively welded to the reinforcement of the foundation body 111 and the reinforcement of the side wall (collectively referred to as the first side wall 141 and the second side wall 142). Pipe pile reinforcement 1121 can be set between the foundation body 111 and the pipe pile 112 to be welded to the reinforcement of the foundation body 111 and the reinforcement of the pipe pile 112 respectively. During the pouring process, the side wall reinforcement 144 and the pipe pile reinforcement 1121 are cast and formed in the concrete to ensure the connection stability between the structures.

[0074] In addition, in some embodiments of the present application, the basic body 111, the first side wall 141 and the second side wall 142 are cast at the same time. At this time, the side wall reinforcement 144 can serve as anchor bars between the basic body 111 and the first side wall 141 and the basic body 111 and the second side wall 142, anchoring the reinforcement of the basic body 111 to the reinforcement of the first side wall 141 and the reinforcement of the basic body 111 to the reinforcement of the second side wall 142.

[0075] This arrangement connects the reinforcement of the foundation body 111 and the reinforcement of the first side wall 141 as a whole via the side wall reinforcement ribs 144, and also connects the reinforcement of the foundation body 111 and the reinforcement of the second side wall 142 as a whole via the side wall reinforcement ribs 144. This ensures the stability of the connection between the first side wall 141 and the foundation body 111, and the stability of the connection between the second side wall 142 and the foundation body 111, thereby providing greater stability to the permeable embankment 1. At the same time, the reinforcement of the foundation body 111 and the reinforcement of one end of the pipe pile 112 embedded in the foundation body 111 are connected as a whole via the pipe pile reinforcement ribs 1121, thereby providing greater integrity to the embankment foundation 11 and ensuring the stability of the connection between the foundation body 111 and the multiple pipe piles 112, thereby providing greater stability to the permeable embankment 1.

[0076] Please refer to Figure 1 , and further reference Figure 5 , Figure 5 This is a schematic diagram of the pipe joint connection of some embodiments of the present application. Figure 5 As shown, in some embodiments of the present application, each circular culvert 13 includes at least one pipe segment 133. When the circular culvert 13 includes multiple pipe segments 133, the multiple pipe segments 133 are connected in sequence along the width direction of the roadbed 12, and cement mortar strips 1331 are set between adjacent pipe segments 133.

[0077] Exemplarily, the pipe segment 133 may be a prefabricated reinforced concrete structure. For example, the pipe segment 133 may be cast and formed using C25 marine concrete.

[0078] In addition, if Figure 5 As shown, when the circular culvert 13 includes multiple pipe segments 133, the gaps between the multiple pipe segments 133 should be sealed to prevent seawater from leaking into the roadbed 12 through the gaps between adjacent pipe segments 133 and causing erosion of the roadbed 12. For example, a cement mortar strip 1331 can be provided between two adjacent pipe segments 133. The width of the cement mortar strip 1331 can be 30 cm, and the ratio of cement to mortar used to form the cement mortar strip 1331 can be 1:3.

[0079] Furthermore, in some embodiments of the present application, a waterproof layer may be provided on the outer circumference of the pipe segments 133 constituting the circular culvert 13 to prevent seawater passing through the circular culvert 13 from leaking into the roadbed 12 and causing erosion of the roadbed 12. Alternatively, hot asphalt may be applied to the outer circumference of the pipe segments 133 as a waterproof layer.

[0080] This arrangement, on the one hand, facilitates the unified production of the pipe segments 133 , reduces manufacturing costs, and improves production efficiency. On the other hand, when the circular culvert 13 includes multiple pipe segments 133 , it facilitates the installation of the circular culvert 13 , thereby improving the installation efficiency of the circular culvert 13 .

[0081] Please refer to Figure 1 , and further reference Figure 6 , Figure 6 Schematic diagram of guardrails in some embodiments of the present application. Figure 6 As shown, in some embodiments of the present application, the permeable embankment 1 further includes: a first guardrail 151 installed above the first side wall 141 ; and a second guardrail 152 installed above the second side wall 142 .

[0082] It should be understood that the permeable embankment 1 is mainly suitable for waterside areas such as coastal areas, that is, both sides of the roadbed 12 in the width direction are water areas. In order to improve the safety of the permeable embankment 1 and prevent vehicles and pedestrians from traveling outside the side walls (collectively referred to as the first side wall 141 and the second side wall 142), guardrails (collectively referred to as the first guardrail 151 and the second guardrail 152) should be set for protection.

[0083] Specifically, such as Figure 6 As shown, the first guardrail 151 and the second guardrail 152 may each include a guardrail body 1513 , a pre-buried junction box 1512 and a guardrail base 1511 .

[0084] Exemplarily, the guardrail base 1511 may be a reinforced concrete structure. When laying out the reinforcement of the side wall, anchor steel bars for connecting to the reinforcement of the guardrail base 1511 may be pre-embedded to improve the connection stability between the side wall and the guardrail.

[0085] Exemplarily, the embedded junction box 1512 is a space reserved for routing cables, optical fiber signal lines, etc. when the guardrail base 1511 is cast.

[0086] Exemplarily, the guardrail body 1513 may be a steel structure and connected to the guardrail base 1511 via threaded fasteners.

[0087] With this arrangement, the first guardrail 151 and the second guardrail 152 can protect pedestrians and vehicles, preventing them from entering outside the first guardrail 151 and the second guardrail 152 .

[0088] Please refer to Figure 2 In some embodiments of the present application, the roadbed 12 includes an installation layer 121 and a stabilization layer 122. The installation layer 121 is arranged above the basic body 111. The installation layer 121 forms an installation position 1211. A circular culvert 13 is installed at a installation position 1211. The stabilization layer 122 is arranged above the installation layer 121 and filled between adjacent circular culverts 13.

[0089] It should be understood that after the circular culvert 13 is installed in place, in order to avoid displacement of the circular culvert 13 during subsequent construction, the circular culvert 13 should be positioned and supported, for example, the installation layer 121 should be cast to fix the circular culvert 13 in position, and the stabilization layer 122 should be cast to fill between adjacent circular culverts 13 and cover the circular culvert 13 to support the circular culvert 13 and avoid damage to the circular culvert 13 during subsequent construction.

[0090] Exemplarily, the installation layer 121 can be C20 concrete, cast above the foundation body 111 and between the first side wall 141 and the second side wall 142 . The thickness of the installation layer 121 can be 40 cm, which can play a certain role in fixing and positioning the circular culvert 13 .

[0091] For example, stabilization layer 122 can be cement-stabilized gravel, and the thickness of stabilization layer 122 can be 200 cm. After pouring stabilization layer 122, stabilization layer 122 and installation layer 121 can cover the circular culvert 13. Cement-stabilized gravel is a roadbed filler 12 formed by using graded gravel as aggregate, i.e., sand and gravel of different diameters are mixed in proportion to form graded gravel as aggregate, and cement slurry and gel material are filled in the gaps between the aggregates. It has high strength and stability, good impermeability and frost resistance, and its surface is firm and not muddy when encountering rain and tides.

[0092] In this configuration, the mounting layer 121 provides a mounting position 1211 for the circular culvert 13, positioning and limiting the circular culvert 13, preventing movement during installation and reducing the installation difficulty. Furthermore, the stabilizing layer 122 is placed between adjacent circular culverts 13. This supports the circular culverts 13 and disperses the extrusion force exerted on them, preventing deformation and damage.

[0093] Please refer to Figure 2 In some embodiments of the present application, the roadbed 12 further includes a slag layer 123 , which is laid above the stabilization layer 122 .

[0094] The slag can be made from local materials. For example, the stones obtained during the foundation excavation process can be used as slag, or the hard material formed by the solidification of the silt clay commonly seen in coastal areas can also be used as slag backfill.

[0095] This arrangement utilizes slag as backfill for the roadbed 12 to form a slag layer 123 , which fully utilizes construction resources, reduces the generation of construction waste, lowers the impact on the environment, and effectively controls costs.

[0096] Please refer to Figure 1 In some embodiments of the present application, a first drainage hole 1412 is provided in the area corresponding to the first side wall 141 and the slag layer 123, a first drainage net 1413 is provided between the first side wall 141 and the slag layer 123, and the first drainage net 1413 covers the first drainage hole 1412; a second drainage hole 1422 is provided in the area corresponding to the second side wall 142 and the slag layer 123, a second drainage net 1423 is provided between the second side wall 142 and the slag layer 123, and the second drainage net 1423 covers the second drainage hole 1422.

[0097] For example, the drainage holes (collectively referred to as first drainage hole 1412 and second drainage hole 1422) can be drilled into the side wall after casting. After drilling, a PVC (Polyvinyl Chloride) hard pipe can be installed in the drainage hole to facilitate the drainage of road water. In addition, to accelerate the drainage of road water, the drainage holes can be tilted outward during the drilling process. For example, the drainage holes can have a 6% outward slope.

[0098] It should be understood that there should be a plurality of drainage holes, which are spaced apart along the extension direction of the side wall. For example, the spacing between the central axes of adjacent drainage holes can be 3m, and the plurality of drainage holes are arranged in a plum blossom shape.

[0099] Furthermore, since the drainage holes are arranged in the area corresponding to the side wall and the slag layer 123, in order to prevent the slag filler in the slag layer 123 from being lost through the drainage holes, a drainage net (a general term for the first drainage net 1413 and the second drainage net 1423) can be set at the drainage holes. The drainage net can pass water and block the slag filler. By covering the drainage holes with the drainage net, the loss of slag filler can be avoided.

[0100] In this arrangement, the first drainage hole 1412 and the second drainage hole 1422 are used to drain the accumulated water on the roadbed 12 to avoid large-scale water accumulation on the roadbed 12 and affecting the passability of the permeable embankment 1. The first drainage net 1413 is set at the first drainage hole 1412 and the second drainage net 1423 is set at the second drainage hole 1422, which can prevent the roadbed 12 filler filled in the slag layer 123 from being discharged through the first drainage hole 1412 and the second drainage hole 1422, thereby improving the stability of the slag layer 123, and thereby improving the stability and service life of the permeable embankment 1.

[0101] Please refer to Figure 1 In some embodiments of the present application, the permeable embankment 1 also includes: a pavement 16, including an asphalt concrete surface layer 161 and a concrete base layer 162, the concrete base layer 162 is arranged above the slag layer 123, and the asphalt concrete surface layer 161 is arranged above the concrete base layer 162.

[0102] It should be understood that in order to facilitate the travel of vehicles and pedestrians, a relatively flat road surface 16 should be laid above the slag layer 123. Specifically, the road surface 16 includes an asphalt concrete surface layer 161 and a concrete base layer 162.

[0103] For example, the concrete base 162 can be cast and formed by cement-stabilized crushed stone. Further, multiple concrete bases 162 can be cast and formed above the slag layer 123, wherein the concrete base 162 located at the bottom has a higher density and the concrete base 162 located at the top has a lower density.

[0104] For example, the asphalt concrete surface layer 161 can be paved with asphalt concrete. Asphalt concrete is a mixture of mineral aggregates (crushed stone, gravel, stone chips, sand, and mineral powder) with a certain graded composition and a certain proportion of asphalt material. Furthermore, multiple asphalt concrete surface layers 161 can be laid on top of the concrete base layer 162, with the lower asphalt concrete surface layer 161 having a higher proportion of mineral aggregate and the upper asphalt concrete surface layer 161 having a higher proportion of asphalt material.

[0105] In this arrangement, the road surface 16 is laid on top of the slag layer 123 for vehicles and pedestrians to pass through. The concrete base layer 162 plays a supporting and leveling role, while the asphalt concrete surface layer 161 has good permeability and durability.

[0106] In some embodiments of the present application, platforms 17 for maintenance and sightseeing can be provided at regular intervals along the extension direction of the roadbed 12. It should be understood that the width of the portion of the roadbed 12 where the platforms 17 are provided only needs to be greater than the width of the other portions of the roadbed 12. The length of the circular culvert 13 here is also longer than that of other circular culverts 13. Apart from this, the structure and construction method of the portion of the permeable embankment 1 where the platforms 17 are provided are consistent with those of the other portions.

[0107] On the other hand, the present application also provides a construction method for a permeable embankment 1 .

[0108] Please refer to Figure 7 , Figure 7 Flowchart of the construction method of the permeable embankment 1 according to some embodiments of the present application. Specifically, the construction method of the permeable embankment 1 includes:

[0109] S1, digging a foundation pit and installing fixed feet 113 on both sides of the foundation pit in the width direction;

[0110] S2, laying a crushed stone layer 114 on the surface of the foundation pit, and pouring a concrete adjustment layer 115, reserving positions for the pipe piles 112 on the concrete adjustment layer 115;

[0111] S3, placing the pipe piles 112 at corresponding pipe pile 112 placement positions, and placing the pipe piles 112 in a vertical direction so that the upper ends of the pipe piles 112 extend out of the concrete adjustment layer 115;

[0112] S4. Arrange the reinforcement of the foundation body 111 above the concrete adjustment layer 115. Weld part of the reinforcement of the foundation body 111 to the exposed reinforcement of the pipe piles 112. Weld another part of the reinforcement of the foundation body 111 to the exposed reinforcement of the pipe piles 112 via the pipe pile reinforcement ribs 1121. Weld the reinforcement of the foundation body 111 to the side wall reinforcement ribs 144.

[0113] S5, arranging side wall reinforcement on both sides of the width direction of the basic body 111, welding the side wall reinforcement to the side wall reinforcement ribs 144, and welding the stirrups 143 to the side wall reinforcement along the circumference of the through hole;

[0114] S6, pouring concrete to form the foundation body 111 and part of the side wall. After pouring, the side wall forms the installation position 1211 of the circular culvert 13;

[0115] S7, placing the circular culvert 13 at the circular culvert 13 installation position 1211, and applying asphalt on the outer circumference of the circular culvert 13;

[0116] S8, pouring concrete to form the installation layer 121 and another part of the side wall; pouring concrete on the top of the circular culvert 13 so that the concrete covers the circular culvert 13, and forming the stabilization layer 122;

[0117] S9, opening drainage holes on the side wall and installing drainage nets at the drainage holes;

[0118] S10, backfilling the slag above the stabilization layer 122, and paving the road surface 16 above the slag;

[0119] S11, install guardrails above the side walls.

[0120] It should be noted that the above-mentioned construction method of the permeable embankment 1 is only a schematic illustration of the construction process of the permeable embankment 1, and does not represent the specific construction sequence of the permeable embankment 1 during the construction process. During the production and manufacturing process of the permeable embankment 1, a specific construction process can be formulated according to actual conditions.

[0121] It should be understood that since the construction environment of the permeable embankment is the coastal sea area, when setting the pipe piles, if the pipe piles are prestressed pipe piles, floating ship piling facilities can be used for construction, or if the pipe piles are bored and cast-in-place pipe piles, a steel temporary bridge can be first built on the sea surface, and then drilling equipment can be used for drilling construction.

[0122] In addition, due to the low elevation of the foundation and side walls, which are affected by tidal levels, cofferdam construction is required. To avoid impacting the use of the corresponding sea area during construction, a segmented cofferdam construction method should be adopted, with a rolling construction method. For example, the length of a single cofferdam can be 60-100 meters.

[0123] When constructing the foundation and side walls, the specific construction process may be to arrange and tie the reinforcement of the foundation and the reinforcement of the side walls, embed the reinforcement of the side walls and the side wall reinforcement and weld them to the reinforcement of the foundation, set up the concrete casting mold and reserve the position of the through hole, and then cast. It should be pointed out that when casting the foundation, the casting should be completed in one go and there should be no interruption in the width direction of the foundation; when casting the side walls, a segmented casting construction method can be adopted. Among them, when the height of the cast side walls is higher than the tide level, the cofferdam can be removed and the subsequent casting and other construction can be completed.

[0124] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0125] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A permeable embankment, characterized in that: include: The embankment foundation comprises a foundation body and a plurality of pipe piles, wherein the foundation body is a reinforced concrete structure, the plurality of pipe piles are buried in the foundation body, and the plurality of pipe piles are arranged in a vertical direction; a roadbed, arranged above the embankment foundation; A plurality of circular culverts, each of which is disposed within the roadbed along the width of the roadbed and spaced apart along the extension direction of the roadbed. The circular culverts are tubular structures with openings at both ends, and the openings at both ends of the circular culverts are both connected to the outside world; Each of the circular culverts includes at least one pipe segment. When the circular culvert includes a plurality of pipe segments, the plurality of pipe segments are sequentially connected along the width direction of the roadbed, and cement mortar strips are provided between adjacent pipe segments. The roadbed includes an installation layer and a stabilization layer. The installation layer is arranged above the foundation body. The installation layer is formed with installation positions. One circular culvert is installed at one installation position. The stabilization layer is arranged above the installation layer and filled between adjacent circular culverts. The installation layer and the stabilization layer are cast in concrete; Each of the circular culverts includes a first open end and a second open end, and the permeable embankment further includes: a first side wall disposed on one side of the roadbed along the width direction of the roadbed, the first side wall being provided with a first through hole, the first through hole extending along the width direction of the roadbed and penetrating the first side wall, the first open end of one of the circular culverts being passed through one of the first through holes and communicating with the outside; a second side wall disposed on the other side of the roadbed along the width direction of the roadbed, the first side wall being provided with a second through hole, the second through hole extending along the width direction of the roadbed and penetrating the second side wall, the second open end of one of the circular culverts being passed through one of the second through holes and communicating with the outside; The first side wall and the second side wall are both reinforced concrete structures. Side wall reinforcement ribs are provided between the reinforcement of the foundation body and the reinforcement of the first side wall, and between the foundation body and the second side wall. Pipe pile reinforcement ribs are provided between the reinforcement of each pipe pile buried in one end of the foundation body and the reinforcement of the foundation body.

2. The permeable embankment according to claim 1, characterized in that: The distance between the central axes of two adjacent circular culverts is greater than or equal to 3m and less than or equal to 5m.

3. The permeable embankment according to claim 1, characterized in that: The first side wall and the second side wall are both reinforced concrete structures, and the first side wall and the second side wall both include stirrups, the stirrups are arranged along the circumference of the first through hole and connected to the reinforcement of the first side wall, and the stirrups are arranged along the circumference of the second through hole and connected to the reinforcement of the second side wall.

4. The permeable embankment according to claim 1, characterized in that: The permeable embankment further comprises: a first guardrail, installed above the first side wall; The second guardrail is installed above the second side wall.

5. The permeable embankment according to claim 1, characterized in that: The roadbed also includes a slag layer, which is laid above the stabilization layer.

6. The permeable embankment according to claim 5, characterized in that: A first drainage hole is opened in the area of ​​the first side wall corresponding to the slag layer, and a first drainage net is provided between the first side wall and the slag layer, and the first drainage net covers the first drainage hole; A second drainage hole is formed in an area of ​​the second side wall corresponding to the slag layer, and a second drainage net is provided between the second side wall and the slag layer. The second drainage net covers the second drainage hole.

7. The permeable embankment according to claim 5, characterized in that: The permeable embankment further comprises: The road surface comprises an asphalt concrete surface layer and a concrete base layer, wherein the concrete base layer is arranged above the slag layer, and the asphalt concrete surface layer is arranged above the concrete base layer.

8. A construction method for a permeable embankment, characterized in that: include: Dig a foundation pit and set fixed feet on both sides of the width direction of the foundation pit; Lay a crushed stone layer on the surface of the foundation pit, pour a concrete adjustment layer, and reserve positions for pipe piles on the concrete adjustment layer; The pipe piles are arranged at corresponding pipe pile setting positions, and the pipe piles are arranged in a vertical direction, with the upper ends of the pipe piles extending out of the concrete adjustment layer; Arrange the reinforcement of the foundation body above the concrete adjustment layer, weld part of the reinforcement of the foundation body to the exposed reinforcement of the pipe pile, weld another part of the reinforcement of the foundation body to the exposed reinforcement of the pipe pile through the pipe pile reinforcement, and weld the reinforcement of the foundation body to the side wall reinforcement; Arrange side wall reinforcement on both sides of the width direction of the foundation body, weld the side wall reinforcement to the side wall reinforcement, and weld the stirrups to the side wall reinforcement along the circumference of the through hole; Pour concrete to form the foundation body and part of the side wall. After pouring, the side wall forms the installation position of the circular culvert; Place the circular culvert at the circular culvert installation position and apply asphalt on the outer surface of the circular culvert; pouring concrete, forming the installation layer and another section of the side wall; Pour concrete on the circular culvert so that the concrete covers the circular culvert and forms a stabilizing layer; Drain holes are opened on the side walls and drainage nets are installed at the drainage holes; Backfill the slag above the stabilization layer and lay the road surface on top of the slag; Install guardrails above the side walls.

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