Modular car line road infrastructure

Abstract

A modular roadway foundation structure addresses the problems of long construction periods, high costs, difficulty in ensuring road quality, and inconvenient management inherent in existing technologies. It includes a roadway base foundation with several sets of basic roadway modules arranged sequentially to form the roadway. Municipal pipelines are installed within the roadway base foundation. Drainage curbs and water collection pipes are installed on both sides of the roadway, with the water collection pipes connected to the municipal pipelines via diversion lines. Above the roadway composed of the basic roadway modules, a stabilizing layer membrane, a protective layer membrane, and an asphalt concrete membrane are laid layer by layer. Its design is reasonable and compact, allowing for rapid assembly, easy installation and laying, effectively solving the problem of long road construction periods. The dismantled materials can be recycled and reused, reducing solid waste pollution, and facilitating the installation, maintenance, and upgrading of underground pipelines.

Description

Technical Field

[0001] This invention belongs to the field of road engineering technology, specifically relating to a modular roadbed foundation structure that can be quickly assembled, is easy to install and lay, effectively solves the problem of long road construction periods, allows for the recycling and reuse of materials after dismantling, reduces solid waste pollution in road engineering, and facilitates the installation, maintenance and upgrading of underground pipelines. Background Technology

[0002] Currently, the construction of urban vehicular roads mainly relies on the traditional method of on-site concrete pouring. This method has a long construction period, which is not conducive to timely project completion. From site leveling, formwork erection, and reinforcement to concrete pouring, most of the work is still done manually, resulting in very low production efficiency and consequently, a long construction period and heavy pressure to meet contractual obligations. At the same time, traditional on-site pouring also has unavoidable technical gaps such as curing, and the quality of outdoor on-site pouring is difficult to guarantee, with more defects and a higher risk of rework. Furthermore, the concrete's performance is slow to develop due to environmental factors after pouring, which is also detrimental to contract fulfillment.

[0003] Furthermore, traditional cast-in-place construction methods have high project costs that are difficult to control effectively. Due to the complexity of the cast-in-place structure process, the large amount of manual labor involved, and its susceptibility to external factors, many cost factors are difficult to control. Moreover, the longer the construction period, the more factors influence cost changes, further increasing the difficulty of cost control. In addition, the cast-in-place construction process involves numerous steps, each with its own environmental impacts. On-site management is extensive and challenging, resulting in a significant environmental impact during project implementation and making it difficult to meet the requirements of green construction.

[0004] Furthermore, the quality of road construction is difficult to reliably guarantee. The formwork commonly used in on-site reinforced concrete forming develops large gaps after repeated use, making it prone to grout leakage. This is especially true at joints, where formwork connections are more difficult to maintain, making it hard to guarantee joint dimensions and exacerbating grout leakage. This results in honeycomb, pitting, exposed reinforcement, and even large voids on the concrete surface. Simultaneously, the cast-in-place construction process involves numerous on-site production steps, with unstable production conditions, making it difficult to standardize the management of each step. Therefore, it is necessary to improve the structure and construction methods of existing roadbed foundations. Summary of the Invention

[0005] This invention addresses the aforementioned problems by providing a modular roadbed foundation structure that allows for rapid assembly, easy installation and laying, effectively solves the problem of long road construction periods, enables the recycling and reuse of dismantled materials, reduces solid waste pollution in road engineering, and facilitates the installation, maintenance, and upgrading of underground pipelines.

[0006] The technical solution adopted in this invention is as follows: the modular roadway foundation structure includes a roadway bottom foundation, characterized in that: several sets of basic roadway modules are arranged above the roadway bottom foundation, the basic roadway modules are arranged continuously to form a roadway, municipal pipelines are also arranged below the roadway and within the roadway bottom foundation; several sets of drainage curbs and water collection pipes are respectively arranged along the road extension direction on both sides of the roadway, and the water collection pipes are connected to the municipal pipelines through guide pipes on the side walls; above the roadway composed of basic roadway modules, a stabilizing layer membrane, a protective layer membrane, and an asphalt concrete membrane are laid layer by layer in sequence.

[0007] The basic carriageway module includes a carriageway module body with four sets of sidewalls on its sides. Two sets of sidewalls have several assembly protrusions, while the other two sets have several assembly grooves. These assembly protrusions and grooves, with their convex and concave circular structural nodes, ensure a tight connection between the carriageway modules. Through strength compression, the modules are prevented from being affected by the shaking caused by vehicle movement, thus enhancing the interaction between the modules. Furthermore, textures can be applied to the upper and lower layers of the carriageway module body to increase the coefficient of friction, enhance its interaction with the base layer, surface layer, and other modules, thereby improving the lateral resistance of the roadbed, reducing lateral displacement, and preventing roadbed deformation.

[0008] The main body of the driveway module is made of recycled plastic composite material or rubber, and the interior of the driveway module is also equipped with longitudinal and transverse reinforcing fibers. This fully utilizes recycled plastics, rubber and other materials, and by adding discrete stiffening materials such as longitudinal and transverse reinforcing fibers, it plays a role in bearing stress, reducing the deformation of composite materials, and improving impact resistance, thereby effectively improving the strength and stiffness of the module to meet the upper limit requirements of road load.

[0009] The main body of the driveway module has several hollow air-layer structures inside. These hollow air-layer structures are designed according to stress distribution to avoid material redundancy at specific locations on the module. This optimization of the module's shape improves material utilization and reduces costs.

[0010] The adjacent sets of basic carriageway modules are connected by carriageway module connectors. Each carriageway module connector includes a carriageway module anchor fixedly installed on the bottom foundation of the carriageway, and the basic carriageway modules are connected to the anchors via carriageway module connection slots. A carriageway module fastening plug is also inserted above each anchor. The carriageway module connectors are used to individually and precisely install each set of basic carriageway modules onto the anchors on the bottom foundation of the carriageway. Then, the fastening plugs inserted above the anchors secure the adjacent sets of basic carriageway modules.

[0011] The roadway module anchor bolts include an anchor plate with vertically arranged roadway module connecting brackets on the anchor plate. These connecting brackets engage with roadway module connecting slots on the basic roadway module. Furthermore, the upper end of the connecting brackets has a plug-in cavity for connecting with a roadway module fastening insert. The anchor plate is fixed to the bottom foundation of the roadway using anchor bolts. The roadway module connecting slots located at the four corners of the basic roadway module engage with one corner of the cross-shaped connecting bracket, and the roadway module fastening insert is inserted into the plug-in cavity at the upper end of the connecting bracket.

[0012] The driveway module fastening insert includes a vertically arranged insert plate. The cross-sectional shape of the insert plate matches the cross-sectional shape of the insert cavity. A fastening pressure plate is provided at the upper end of the insert plate, and the fastening pressure plate is connected to the bolt hole at the upper end of the driveway module's anchor bolt via fastening bolts. The driveway module fastening insert is movably inserted into the driveway module connecting bracket by the mating of the cross-shaped insert plate and the cross-shaped insert cavity. The fastening pressure plate of the driveway module fastening insert is then connected to the upper end of the driveway module's anchor bolt using fastening bolts, thereby achieving a fastening connection between adjacent driveway basic modules.

[0013] The driveway module anchor bolt has an insertion guide groove in its insertion cavity, and correspondingly, the driveway module fastening bolt has an insertion guide block on its insertion plate. The cooperation between the insertion guide block on the insertion plate and the insertion guide groove in the insertion cavity improves the reliability of the driveway module fastening bolt's insertion and removal within the driveway module anchor bolt.

[0014] The bottom of the basic carriageway module is provided with a pipeline laying trench, which contains drainage pipelines and / or power lines. This pipeline laying trench at the bottom of the basic carriageway module further facilitates the laying of drainage pipelines and power lines beneath the road.

[0015] A road trench is constructed within the foundation of the carriageway, and the municipal pipelines are laid within the road trench. An openable pipeline laying opening is located on the upper side of the road trench. A sealing protrusion for the laying opening is also provided on the lower side of the carriageway basic module, and the carriageway basic module is secured to the openable pipeline laying opening on the upper side of the road trench via the sealing protrusion. This method utilizes a road trench located below the frost line with an openable pipeline laying opening to lay municipal pipelines. The opening and closing of the openable pipeline laying opening on the upper side of the road trench is facilitated by the carriageway basic module with the sealing protrusion on its lower side, making maintenance of the municipal pipelines convenient.

[0016] The beneficial effects of this invention are as follows: Because this invention employs a roadway foundation with several sets of basic roadway modules arranged sequentially to form a roadway, municipal pipelines are installed below the roadway and within the roadway foundation. Several sets of drainage curbs and water collection pipes are arranged along the road's extension direction on both sides of the roadway, with the water collection pipes connected to the municipal pipelines via guide pipes on the side walls. The roadway, composed of basic roadway modules, is then layered with stabilizing membrane, protective membrane, and asphalt concrete membrane. Therefore, its design is reasonable and compact, providing a modular structure that can be quickly assembled for road construction, effectively solving the problem of long road construction periods. Simultaneously, the dismantled materials can be recycled and reused, reducing the large amount of construction waste generated during road demolition and effectively reducing solid waste pollution in road engineering. The road foundation structure is easy to install and lay, ensuring the convenience of installing, inspecting, and upgrading the underlying pipelines, and facilitating the formation of a water storage and drainage device for sponge city applications, thus better meeting the needs of green transportation systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one structure of the present invention.

[0018] Figure 2 yes Figure 1 A schematic diagram of a longitudinal section.

[0019] Figure 3 yes Figure 1 A schematic diagram of the layout structure of a basic module of a driveway.

[0020] Figure 4 yes Figure 3 An exploded structural diagram of the basic carriageway module and carriageway module connectors.

[0021] Figure 5 yes Figure 4A schematic diagram of the basic module of the driveway in the system.

[0022] Figure 6 yes Figure 5 A cross-sectional view of the internal structure.

[0023] Figure 7 There are two Figure 5 A cross-sectional view of the connection structure of a basic module of the roadway in a vehicle.

[0024] Figure 8 yes Figure 4 A schematic diagram of the structure of the anchor bolts and fastening plugs for the driveway module.

[0025] Figure 9 yes Figure 8 A schematic diagram of a connection structure between the driveway module connecting bracket and the driveway module connecting slot of the basic driveway module, as well as the driveway module fastening plug and the driveway module anchor.

[0026] Figure 10 yes Figure 1 Another structural diagram of the basic module of the vehicle lane (with pipeline laying groove).

[0027] Figure 11 yes Figure 1 A schematic diagram of a connection structure between the basic carriageway module (with a paving opening closure protrusion) and the road ditch on the bottom foundation of the carriageway.

[0028] The numbers in the diagram are explained as follows: 1. Carriage bottom foundation; 2. Carriage basic module; 3. Municipal pipeline; 4. Drainage pipe; 5. Drainage curbstone; 6. Stabilized layer membrane; 7. Protective layer membrane; 8. Asphalt concrete membrane; 9. Carriage module connector; 10. Carriage module anchor; 11. Carriage module fastening plug; 12. Carriage module connecting slot; 13. Carriage module body; 14. Longitudinal and transverse reinforcing fibers; 15. Assembly protrusion; 16. Assembly groove; 17. Hollow air layer structure; 18. Embedded part base plate; 19. Embedded part positioning bolt; 20. Carriage module connecting bracket; 21. Plug-in cavity; 22. Plug-in guide groove; 23. Bolt connection hole; 24. Fastening pressure plate; 25. Plug-in plate; 26. Plug-in guide block; 27. Fastening connection bolt; 28. Pipeline laying trench; 29. ​​Drainage pipeline; 30. Road ditch; 31. Openable pipeline laying port; 32. Laying port sealing protrusion. Detailed Implementation

[0029] according to Figures 1-11The specific structure of this invention is described in detail. The modular roadway foundation structure includes a roadway base 1, above which are several sets of basic roadway modules 2. These basic roadway modules 2 are arranged continuously along the longitudinal and transverse directions to form the roadway. Each basic roadway module 2 is composed of a roadway module body 13, which can be made of recycled plastic composite material or rubber material. Furthermore, the interior of the roadway module body 13 is also provided with longitudinal and transverse reinforcing fibers 14. This fully utilizes recycled plastics and rubber to reduce construction costs. By adding discrete reinforcing materials such as longitudinal and transverse reinforcing fibers 14, the module can bear stress, reduce composite material deformation, and improve impact resistance, effectively enhancing the strength and stiffness of the module to meet the upper limit requirements of road load.

[0030] The main body 13 of the driveway basic module 2 can adopt a multi-layer thin plate stacked structure, thus making the design of the driveway basic module 2 more flexible. The material of each layer of the driveway basic module 2 can be selected according to needs. For example, if the material near the upper and lower surfaces of the module needs to withstand greater bending stress, the uppermost and lowermost thin plates can be made of high fiber content materials; the middle layer, due to the use of a hollow structure and air pressure, optimizes the effective distribution of reinforcing materials such as fibers to reduce material costs. In addition, by arranging continuous longitudinal and transverse reinforcing fibers 14 between the layers, a layered or sandwich structure is formed, effectively improving the bending strength of the module. In the laminated structure, structural adhesives or epoxy resins are usually used to bond the thin plates, so that the performance of the module can be improved by different arrangements and combinations of the thin plates, effectively reducing the possibility of delamination and detachment between layers under fatigue loads.

[0031] The main body 13 of the square-structured driveway module has four sets of side walls (such as...). Figure 5 As shown in the diagram, two sets of sidewalls are provided with several assembly protrusions 15, while the other two sets of sidewalls are provided with several assembly grooves 16. Thus, by utilizing the assembly protrusions 15 and assembly grooves 16 with convex and concave circular structural nodes correspondingly provided on the sides of the main body 13 of the roadway module, the basic roadway modules 2 can be tightly connected. Through strength compression, the modules are prevented from being affected by the shaking caused by vehicle movement, thus enhancing the interaction between the modules. Furthermore, textures can be provided on the upper and lower layers of the main body 13 of the roadway module to increase the coefficient of friction, enhance its interaction with the base layer, surface layer, and each module, thereby increasing the lateral resistance of the roadbed, reducing lateral displacement, and preventing roadbed deformation.

[0032] The interior of the main body 13 of the driveway module has several hollow air layer structures 17 (such as... Figure 5 and Figure 6(As shown). The hollow air layer structure 17 is designed according to the stress distribution to avoid material redundancy at specific locations on the module; by optimizing the shape of the module body, the material utilization rate is improved and the cost is reduced. Furthermore, by setting up this hollow structure and air pressure, while ensuring that the strength of the module body meets the usage requirements, 30% of the material can be saved compared to a solid module body structure, without affecting the structural performance of the module.

[0033] Meanwhile, the four corners of two adjacent sets of basic carriageway modules 2 are connected by carriageway module connectors 9 (e.g., Figure 3 (As shown). The carriageway module connector 9 includes carriageway module anchor bolts 10 fixedly installed on the carriageway foundation 1 at the bottom of the carriageway, and the carriageway basic module 2 is connected to the carriageway module anchor bolts 10 through carriageway module connecting slots 12 provided at its four corners; a carriageway module fastening plug 11 (such as...) is also inserted and installed above the carriageway module anchor bolts 10. Figure 4 (As shown). Then, through the carriageway module connecting slot 12, each group of carriageway basic modules 2 is positioned and installed one by one on the carriageway module anchor 10 on the carriageway bottom foundation 1; then, the carriageway module fastening plug 11, which is inserted above the carriageway module anchor 10, is used to fasten each group of adjacent carriageway basic modules 2.

[0034] The roadway module anchor 10 includes an anchor base plate 18, on which a vertically arranged roadway module connecting bracket 20 is provided. The transverse cross section of the roadway module connecting bracket 20 is cross-shaped. One corner of the roadway module connecting bracket 20 engages with the roadway module connecting slots 12 at the four corners of the basic roadway module 2. Furthermore, the upper end of the roadway module connecting bracket 20 is also provided with a cross-shaped plug-in cavity 21 for connecting with the roadway module fastening plug 11 (e.g., Figure 8 (As shown). Then, the embedded base plate 18 is fixed to the bottom foundation 1 of the roadway using the embedded positioning bolts 19, and the roadway module connecting slots 12 located at the four corners of the roadway basic module 2 are snapped into one corner of the cross-shaped roadway module connecting bracket 20. The roadway module fastening plug 11 is then inserted into the plug insertion cavity 21 at the upper end of the roadway module connecting bracket 20 (e.g., Figure 9 (As shown).

[0035] The driveway module fastening plug 11 is composed of vertically arranged plug-in plates 25. The cross-sectional shape of the plug-in plates 25 matches the cross-sectional shape of the plug-in cavity 21, that is, the transverse cross-section of the plug-in plates 25 is also cross-shaped. Furthermore, a fastening pressure plate 24 is provided at the upper end of the plug-in plates 25. The fastening pressure plate 24 is connected to the bolt connection hole 23 at the upper end of the driveway module anchor 10 via fastening bolts 27. Thus, through the mating insertion of the cross-shaped plug-in plates 25 and the cross-shaped plug-in cavity 21, the driveway module fastening plug 11 is movably inserted into the driveway module connecting bracket 20. The fastening pressure plate 24 of the driveway module fastening plug 11 is connected to the upper end of the driveway module anchor 10 using the fastening bolts 27, thereby achieving a fastening connection between adjacent driveway basic modules 2. In addition, the insertion cavity 21 of the roadway module anchor 10 is provided with an insertion guide groove 22. Correspondingly, the insertion plate 25 of the roadway module fastening plug 11 is provided with an insertion guide block 26. The insertion guide block 26 on the insertion plate 25 and the insertion guide groove 22 in the insertion cavity 21 are used to guide the roadway module fastening plug 11 to improve the reliability of insertion and removal of the roadway module fastening plug 11 in the roadway module anchor 10.

[0036] Beneath the roadway, which is composed of several basic roadway modules 2, and inside the foundation 1 at the bottom of the roadway, several sets of municipal pipelines 3 are also installed. On both sides of the roadway, several sets of drainage curb stones 5 and water collection pipes 4 are arranged along the road's extension direction, and the water collection pipes 4 are connected to the municipal pipelines 3 via guide pipes on the side walls. Above the basic roadway modules 2 (roadway), a stabilizing layer membrane 6, a protective layer membrane 7, and an asphalt concrete membrane 8 (such as...) are laid layer by layer. Figure 1 and Figure 2 (As shown). A pipeline laying trench 28 can be installed at the bottom of the basic carriageway module 2. Drainage pipelines 29 and power lines (such as...) are installed within the pipeline laying trench 28. Figure 10 (As shown); the pipeline laying groove 28 at the bottom of the basic module 2 of the roadway further facilitates the laying of drainage pipelines 29 and power lines under the road.

[0037] Furthermore, the municipal pipeline 3 can be laid within the road trench 30 located within the foundation 1 at the bottom of the carriageway. The road trench 30 has an openable pipeline laying opening 31 on its upper side. Understandably, the size of the road trench 30 can be adapted to accommodate workers operating and constructing within it, depending on specific usage requirements. Correspondingly, the lower side of the carriageway basic module 2 is provided with a laying opening closure protrusion 32, and the carriageway basic module 2 is secured to the openable pipeline laying opening 31 on the upper side of the road trench 30 via the laying opening closure protrusion 32 (e.g., ...). Figure 11As shown), and connected via a carriageway module connector 9. Furthermore, municipal pipelines 3 are laid using a road trench 30 located below the frost line and equipped with an openable pipeline laying port 31. The carriageway basic module 2, with a laying port sealing protrusion 32 on its lower side, facilitates the opening and closing of the openable pipeline laying port 31 on the upper side of the road trench 30, thus simplifying the maintenance of the municipal pipelines 3.

[0038] When using this modular roadway infrastructure, firstly, a roadway base foundation 1 is laid at the bottom, and municipal pipelines 3 are laid in the road trench 30 on the roadway base foundation 1. Water collection pipes 4 are laid on both sides of the roadway base foundation 1, and the water collection pipes 4 are connected to the municipal pipelines 3 through diversion pipes on the side walls. Then, according to the size and location of the basic roadway module 2, several sets of roadway module anchor bolts 10 are pre-fixed and installed on the upper side of the roadway base foundation 1. Then, through the carriageway module connecting slot 12, the four corners of each group of carriageway basic modules 2 are respectively positioned and installed on the carriageway module anchor 10 at the corresponding positions; then, using the carriageway module fastening plug 11 inserted above the carriageway module anchor 10, the adjacent carriageway basic modules 2 are fastened at the connection points at the four corners of the module; and the fastening plate 24 at the top of the carriageway module fastening plug 11 is connected to the upper end of the carriageway module anchor 10 using the fastening connection bolt 27, so as to realize the fastening connection of each group of adjacent carriageway basic modules 2.

[0039] Simultaneously, drainage pipes 29 or power lines can be installed in the pipeline laying trench 28 on the lower side of the basic carriageway module 2, thereby further facilitating pipeline installation. On both sides of the carriageway composed of several sets of basic carriageway modules 2, drainage curb stones 5 are also installed along the road's extension direction. Then, above each set of basic carriageway modules 2 arranged on the bottom foundation 1 of the carriageway, a stabilizing layer membrane 6, a protective layer membrane 7, and an asphalt concrete membrane 8 are laid layer by layer, thereby forming the carriageway through a modular structure. Furthermore, when the municipal pipeline 3 requires maintenance, the basic carriageway module 2 located at the road trench 30 (with a paving opening sealing protrusion 32 on the lower side) is removed; afterwards, workers can enter the road trench 30 through the openable pipeline laying opening 31 on the upper side of the road trench 30 to maintain the municipal pipeline 3.

Claims

1. A modular roadway foundation structure, comprising a roadway bottom foundation (1), characterized in that: Above the bottom foundation (1) of the carriageway, several sets of basic carriageway modules (2) are arranged one after another to form a carriageway. Below the carriageway and inside the bottom foundation (1), municipal pipelines (3) are also installed. On both sides of the carriageway, several sets of drainage curb stones (5) and water collection pipes (4) are respectively arranged along the road's extension direction, and the water collection pipes (4) are connected to the municipal pipelines (3) through guide pipes on the side walls. Above the roadway formed by blocks (2), a stabilizing layer roll (6), a protective layer roll (7), and an asphalt concrete roll (8) are laid layer by layer in sequence; adjacent sets of the roadway basic modules (2) are connected by roadway module connectors (9), the roadway module connectors (9) include roadway module anchors (10) fixedly installed on the roadway bottom foundation (1), and the roadway basic modules (2) are connected to the roadway modules through roadway module connecting slots (12) respectively. The roadway module anchor (10) is connected to the roadway module anchor (10); a roadway module fastening plug (11) is also inserted above the roadway module anchor (10); the roadway module anchor (10) includes an anchor base plate (18), on which a vertically arranged roadway module connecting bracket (20) is provided, the roadway module connecting bracket (20) is engaged with the roadway module connecting slot (12) on the roadway basic module (2), and the upper end of the roadway module connecting bracket (20) is also provided with The device is provided with a plug-in cavity (21) for connecting to the fastening plug (11) of the roadway module; the fastening plug (11) of the roadway module includes a vertically arranged plug-in plate (25), the cross-sectional shape of the plug-in plate (25) matches the cross-sectional shape of the plug-in cavity (21), and a fastening pressure plate (24) is provided at the upper end of the plug-in plate (25), and the fastening pressure plate (24) is connected to the bolt connection hole (23) at the upper end of the roadway module anchor (10) through a fastening connection bolt (27).

2. The modular vehicular roadway infrastructure according to claim 1, characterized in that: The basic module (2) of the carriageway includes a carriageway module body (13). The carriageway module body (13) has four sets of side walls on its side. Two sets of side walls have several assembly protrusions (15), while the other two sets of side walls have several assembly grooves (16).

3. The modular vehicular roadway infrastructure according to claim 2, characterized in that: The main body (13) of the driveway module is made of recycled plastic composite material or rubber, and the interior of the main body (13) of the driveway module is also provided with longitudinal and transverse reinforcing fibers (14).

4. The modular roadway infrastructure according to claim 3, characterized in that: The main body (13) of the driveway module has several hollow air layer structures (17) inside.

5. The modular vehicular roadway infrastructure according to claim 1, characterized in that: The insertion cavity (21) of the roadway module anchor (10) is provided with an insertion guide groove (22), and correspondingly, the insertion plate (25) of the roadway module fastening plug (11) is provided with an insertion guide block (26).

6. The modular vehicular roadway infrastructure according to claim 1, characterized in that: The bottom of the basic module (2) of the carriageway is provided with a pipeline laying groove (28), and a drainage pipeline (29) and / or a power pipeline are provided in the pipeline laying groove (28).

7. The modular roadway infrastructure according to claim 1, characterized in that: A road trench (30) is provided in the bottom foundation (1) of the carriageway, and the municipal pipeline (3) is laid in the road trench (30). An openable pipeline laying port (31) is provided on the upper side of the road trench (30). A laying port sealing protrusion (32) is also provided on the lower side of the carriageway basic module (2), and the carriageway basic module (2) is fixed to the openable pipeline laying port (31) on the upper side of the road trench (30) by the laying port sealing protrusion (32).

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