Overhanging type roadbed structure

Abstract

The utility model belongs to the technical field of road construction engineering, and discloses an overhanging type roadbed structure which comprises a roadbed plate body, a plurality of pile foundations and a plurality of breast boards, and the roadbed plate body comprises an overhanging section, a roadbed section and a prestressed steel beam; the overhanging section is suspended and does not make contact with the water surface, so that the operation of filling soil in the river channel can be avoided, the road width splicing operation in the river-adjacent area is ensured to be smoothly carried out, meanwhile, the occupation of the river channel is reduced, and the flood transit capacity is improved; by applying prestress to the prestressed steel beams, the bending resistance of the roadbed plate is greatly improved, the width of the cantilever section is effectively increased, the plate thickness is reduced, and the cost is saved; the multiple pile foundations can effectively support the cantilever section, and the overall bearing capacity of the roadbed is enhanced; the soil retaining plates are longitudinally distributed along the roadbed plate body and connected with the adjacent pile foundations to form a continuous closed structure, so that the stratum pressure on the inner side of the roadbed is effectively blocked, and the problems that the roadbed is scoured by water flow, landslide or soil flow is blocked and the like are solved.

Description

Technical Field

[0001] This utility model relates to the field of road construction engineering technology, and in particular to a cantilevered roadbed structure. Background Technology

[0002] When widening roads in riverside areas, whether using slope protection or retaining walls, it is inevitable to occupy a certain amount of water space. Slope protection typically requires a large area of ​​land, directly encroaching on the river channel and altering the natural flow path of the river. While retaining walls occupy less land, they still occupy some water area or cause changes in the river's cross-section. If water area compensation measures are implemented, new water areas are excavated in other areas to make up for the area loss according to the principle of "balance between occupation and compensation." However, this compensation can only restore the total water area to a certain extent and is difficult to fully restore the original flood control capacity of the river channel. The original river channel's hydrodynamic conditions, flow velocity distribution, and drainage smoothness are often irreversibly affected, leading to a narrowing of the flood control cross-section or changes in the flow pattern, thereby reducing flood control capacity and further exacerbating the risk of flooding. Utility Model Content

[0003] The purpose of this utility model is to provide a cantilevered roadbed structure that can maintain the integrity of road functions while minimizing actual encroachment on the river channel, improve the flood discharge capacity of the flood discharge section, reduce the risk of flooding, and provide a stable and safe roadbed structure.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A cantilevered roadbed structure is used for road widening operations in riverside areas, wherein the cantilevered roadbed structure includes:

[0006] The roadbed body includes a cantilever section and a roadbed section. The cantilever section is located on the side closer to the river, and the roadbed section is located on the side closer to the existing road. The cantilever section and the roadbed section are integrally connected. The roadbed body is provided with multiple sets of prestressed steel strands. The tensioning end of the prestressed steel strands is located on the side of the cantilever section facing the river, and the anchoring end of the prestressed steel strands is located on the side of the roadbed section facing the existing road.

[0007] Multiple pile foundations are arranged longitudinally and spaced apart along the roadbed body. The top of each pile foundation is connected to the bottom of the cantilever section near the roadbed section. The bottom of each pile foundation can be inserted into the ground to support the cantilever section.

[0008] Multiple retaining plates are distributed longitudinally along the roadbed base body, and each retaining plate is connected between adjacent pile foundations to facilitate the protection and stability of the roadbed base body.

[0009] Furthermore, multiple sets of the prestressed steel strands are distributed sequentially at intervals along the longitudinal direction of the roadbed body, and each set of the prestressed steel strands is arranged transversely along the roadbed body.

[0010] Furthermore, the prestressed steel strands are inclinedly arranged within the roadbed substrate, and the distance between the anchoring end of the prestressed steel strand and the upper surface of the roadbed section is greater than the distance between the tensioning end of the prestressed steel strand and the upper surface of the cantilever section.

[0011] Furthermore, the thickness of the cantilever section gradually increases laterally along the roadbed body from the river towards the original road.

[0012] Furthermore, the bottom of the cantilever section is provided with a first chamfer and a second chamfer in sequence from the river toward the original road. The first chamfer and the second chamfer are continuous, and the angle of the first chamfer is smaller than the angle of the second chamfer, and the width of the first chamfer is greater than the width of the second chamfer.

[0013] Furthermore, the plurality of pile foundations are equidistantly distributed along the longitudinal direction of the roadbed plate body, and the main reinforcement of each pile foundation can be anchored to the bottom of the roadbed plate body.

[0014] Furthermore, the reinforcing bars at the top of each retaining plate are anchored to the bottom of the roadbed plate body; the reinforcing bars on both sides of each retaining plate are anchored to the adjacent pile foundation; and the outer edge of each retaining plate on the side closest to the river is located in the same vertical plane as the outer edge of the adjacent pile foundation.

[0015] Furthermore, the bottom of the roadbed section facing the original road is provided with a protrusion along the direction of penetration into the stratum, and the protrusion can be inserted into the stratum.

[0016] Furthermore, the cantilevered roadbed structure also includes a road surface cross slope, which is located above the top surface of the roadbed substrate body. The road surface cross slope slopes from the original road towards the river to facilitate road drainage. The slope of the top surface of the roadbed substrate body is consistent with the slope of the road surface cross slope.

[0017] Furthermore, the cantilevered roadbed structure also includes guardrails, which are longitudinally positioned along the roadbed body near the edge of the river on the road surface cross slope and / or...

[0018] The guardrail is longitudinally positioned along the roadbed body at a location on the original road away from the edge of the river.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a cantilevered roadbed structure, including a roadbed base body, multiple pile foundations, and multiple retaining plates. The roadbed base body includes a cantilever section and a roadbed section. The cantilever section is located on the side facing the river and is used to support the widened road surface in the riverside area. The roadbed section is located on the side closer to the existing road and is used to connect with the existing roadbed or road. Multiple sets of prestressed steel strands are provided within the roadbed base body. The tensioning end of the prestressed steel strands is located on one side of the cantilever section, and the anchoring end is located on one side of the roadbed section. Because the cantilever section is suspended and does not contact the water surface, it does not obstruct the flow of river water and avoids the need for filling soil in the river channel. This ensures the smooth progress of road widening operations in the riverside area while reducing encroachment on the river channel and excessive interference with the river cross-section, increasing the effective width of the flood discharge section, maintaining or improving the flood discharge capacity of the river channel, and enhancing the flood passage capacity. Since the cantilevered section has a cantilever structure, it is prone to bending or cracking under load. The prestressed steel strands effectively counteract this by applying prestress. Tensile stress is reduced, creating an internal force field within the roadbed slab to resist external loads, thereby significantly improving the flexural strength of the roadbed slab, inhibiting the generation and propagation of cracks, effectively increasing the width of the cantilever section, fully expanding the roadbed space below the cantilever section, increasing the width of the flow passage, and reducing the slab thickness, thus saving concrete and steel reinforcement. Multiple piles are distributed longitudinally and intermittently along the roadbed slab ... Therefore, cantilevered roadbed structures can maintain the integrity of road functions, improve the flood discharge capacity of flood discharge sections, reduce flood risk, and ensure the stability and high safety of the roadbed structure while minimizing actual encroachment on the river channel. Attached Figure Description

[0021] Figure 1 This is a side view of the cantilevered roadbed structure of this utility model;

[0022] Figure 2 This is a top view of the cantilevered roadbed structure of this utility model.

[0023] In the picture:

[0024] 100. Rivers;

[0025] 1. Roadbed plate body; 11. Cantilever section; 12. Roadbed section; 2. Prestressed steel strands; 3. Pile foundation; 4. Retaining plate; 5. First chamfer; 6. Second chamfer; 7. Protrusion; 8. Road surface cross slope; 9. Guardrail; 10. Subbase. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] Please refer to Figures 1 to 2As shown, this utility model provides a cantilevered roadbed structure that can maintain the integrity of road functions while minimizing actual encroachment on the river channel, improve the flood discharge capacity of the flood discharge section, reduce flood risk, and ensure the roadbed structure is stable and highly safe. The cantilevered roadbed structure is used for road widening operations in riverside areas. It includes a roadbed base body 1, multiple pile foundations 3, and multiple retaining walls 4. The roadbed base body 1 includes a cantilever section 11 and a roadbed section 12. The cantilever section 11 is located on the side closer to the river 100, and the roadbed section 12 is located on the side closer to the existing road. The cantilever section 11 and the roadbed section 12 are integrally connected. The roadbed base body 1 contains multiple sets of prestressed steel strands 2. The tensioning end of the prestressed steel strands 2 is located on the side of the cantilever section 11 facing the river 100, and the anchoring end of the prestressed steel strands 2 is located on the side of the roadbed section 12 facing the existing road. Multiple pile foundations 3 are distributed longitudinally and spaced apart along the roadbed base body 1. The top of each pile foundation 3 is connected to the bottom of the cantilever section 11 on the side closer to the roadbed section 12. The bottom of each pile foundation 3 can be inserted into the ground to support the cantilever section 11. Multiple retaining walls 4 are distributed longitudinally along the roadbed base body 1. Each retaining wall 4 is connected between adjacent pile foundations 3 to protect and stabilize the roadbed base body 1.

[0031] Since the cantilever section 11 is suspended and does not contact the water surface, it does not obstruct the flow of river water and avoids the need for filling soil in the river channel. This ensures the smooth progress of road widening operations in the riverside area while minimizing encroachment on the river channel and excessive interference with the river cross-section. It also increases the effective width of the flood discharge cross-section, maintaining or improving the river's flood discharge capacity and enhancing its flood passage ability. Because the cantilever section 11 has a cantilever structure, it is prone to bending or cracking under load. The prestressed steel strands 2 effectively counteract the tensile stress by applying prestress, forming an internal force field within the roadbed body 1 that resists external loads. This significantly improves the bending resistance of the roadbed body, inhibits the generation and propagation of cracks, effectively increases the width of the cantilever section 11, and fully expands the roadbed space below the cantilever section 11. The increased cross-sectional width and reduced slab thickness save on concrete and steel reinforcement. Multiple piles 3 are spaced longitudinally along the roadbed slab body 1, each effectively supporting the cantilever section 11. The piles 3 directly bear the self-weight of the cantilever section 11, traffic loads, and other external forces (such as wind and flood impacts), preventing instability or collapse due to overload and enhancing the overall bearing capacity of the roadbed. Retaining slabs 4 are distributed longitudinally along the roadbed slab body 1, connecting adjacent piles 3 to form a continuous closed structure, providing protection and effectively blocking the pressure of the inner strata of the roadbed, ensuring the stability of the cantilevered roadbed structure. This also prevents water erosion of the roadbed, effectively preventing displacement or deformation of the cantilever section 11 due to flooding, and preventing landslides or soil erosion.

[0032] Combination Figure 1 and Figure 2 As shown, in order to improve the overall bending resistance of the roadbed body 1, in some embodiments, multiple sets of prestressed steel strands 2 are distributed sequentially and spaced apart along the longitudinal direction of the roadbed body 1, and each set of prestressed steel strands 2 is arranged transversely along the roadbed body 1. By arranging each set of prestressed steel strands 2 transversely and applying prestress, an internal compressive stress field penetrating the cross-section is formed in the roadbed body 1. This compressive stress can effectively offset the transverse tensile stress caused by external forces on the roadbed body, significantly improving the bending resistance and stiffness of the cantilever section 11. Distributing multiple sets of prestressed steel strands 2 sequentially and spaced apart along the longitudinal direction of the roadbed body 1 can form a continuous constraint effect, improve the stiffness of the entire structure, form a uniform stress distribution, and improve the overall stiffness and stability of the structure. Each set of prestressed steel strands 2 may contain 5 prestressed steel strands with a diameter of 15.2 mm. Multiple sets of prestressed steel strands 2 are arranged equidistantly along the longitudinal direction of the roadbed body 1. The spacing between two adjacent sets of prestressed steel strands 2 may be, but is not limited to, 0.5 meters. The number of prestressed steel strands in each set of prestressed steel strands 2 and the distance between two adjacent sets of prestressed steel strands 2 can be set according to the actual construction situation, and are not specifically limited here.

[0033] like Figure 1 As shown, to improve the load-bearing capacity of the cantilever section 11, in some embodiments, the prestressed steel strands 2 are inclinedly arranged within the roadbed body 1. The distance between the anchoring end of the prestressed steel strand 2 and the upper surface of the roadbed section 12 is greater than the distance between the tensioning end of the prestressed steel strand 2 and the upper surface of the cantilever section 11. The inclined arrangement of the prestressed steel strands 2 within the roadbed body 1 can more effectively resist the tensile stress at the lower part of the cantilever section 11. Due to the large bending moment generated by the self-weight of the roadbed body 1 and vehicle loads in the cantilever section 11, the inclined arrangement of the prestressed steel strands 2 provides better support, enabling them to provide greater upward support for the outer cantilever section 11, thereby resisting the downward tendency of the roadbed body on the outer side due to loads, and significantly improving the load-bearing capacity of the cantilever section 11. It is understood that the distance between the tensioning end of the prestressed steel strand 2 and the upper surface of the cantilevered roadbed body 1 can be set to 12.5 cm, and the distance between the anchoring end and the upper surface of the cantilevered roadbed body 1 can be set to 40 cm. Specific values ​​can be adjusted according to actual construction needs and are not specifically limited here.

[0034] Continue as Figure 1As shown, in order to improve the stability of the cantilever section 11, in some embodiments, the thickness of the cantilever section 11 gradually increases laterally from the river 100 towards the original road along the roadbed body 1; wherein the thickness of the cantilever section 11 near the roadbed section 12 is larger, which can provide stronger bending stiffness, enhance the load-bearing capacity of the cantilever section 11, and help support the self-weight of the cantilever section 11 and the traffic load above, avoiding excessive deformation or fracture; the thickness of the cantilever section 11 gradually decreases from the original road towards the river 100, which reduces the burden on the entire structure, reduces the pressure on the lower pile foundation 3, and can also reduce unnecessary structural materials and reduce construction costs. Furthermore, at the bottom of the cantilever section 11, a first chamfer 5 and a second chamfer 6 are sequentially provided from the river 100 toward the original road. The first chamfer 5 and the second chamfer 6 are continuous, and the angle of the first chamfer 5 is smaller than the angle of the second chamfer 6, while the width of the first chamfer 5 is greater than the width of the second chamfer 6. The design of the first chamfer 5 and the second chamfer 6 can effectively reduce the direct impact of water flow on the structure. Through the gradual transition between the first chamfer 5 and the second chamfer 6, the impact force of the water flow is dispersed and guided, avoiding direct impact on the bottom plane and reducing the risk of erosion or scouring caused by water flow. The first chamfer 5 has a larger width and a smaller angle, which reduces the contact area between the bottom and the water flow and helps to strengthen the support performance of the structure. The second chamfer 6 has a smaller width and a larger angle, which helps to disperse the pressure of the water flow, thereby reducing the impact on the bottom of the structure and improving the overall stability of the cantilever section 11. It is understandable that the total width of the cantilever section 11 can be set to 3.5 meters, of which the width of the first chamfer 5 is 2.65 meters, and its initial thickness on the side of the river 100 is 0.5 meters. The width of the second chamfer 6 is 0.5 meters, and its thickness at the end adjacent to the first chamfer 5 is 0.8 meters. The specific values ​​can be adjusted according to the actual construction needs, and no specific limit is made here.

[0035] like Figure 2As shown, to further improve the stability of the overall structure, in some embodiments, multiple pile foundations 3 are equidistantly distributed along the longitudinal direction of the roadbed body 1, and the main reinforcement of each pile foundation 3 can be anchored to the bottom of the roadbed body 1. The equidistant distribution of the pile foundations 3 along the longitudinal direction ensures that the load of each pile foundation 3 is evenly distributed at the bottom of the roadbed body 1, effectively avoiding excessive local pressure on a single pile foundation 3, reducing the risk of tilting and displacement of the pile foundation 3, thereby improving the stability of the overall roadbed structure. The anchoring connection between the main reinforcement of the pile foundation 3 and the bottom of the roadbed body 1 can ensure the effective transmission of force. Through the anchoring connection, the pile foundation 3 and the roadbed body form a tight integral structure, improving the ability to resist overturning and lateral displacement. Furthermore, the top reinforcement of each retaining plate 4 is anchored to the bottom of the roadbed base 1; the reinforcement on both sides of each retaining plate 4 is anchored to the adjacent pile foundation 3; the outer edge of each retaining plate 4 on the side closest to the river 100 is located in the same vertical plane as the outer edge of the adjacent pile foundation 3; wherein, the top reinforcement of the retaining plate 4 is anchored to the bottom of the roadbed base 1, so that the retaining plate 4 and the roadbed base 1 form a tight whole, enhancing the stability of the entire structure and ensuring the effectiveness of the retaining function; the reinforcement on both sides of the retaining plate 4 is anchored to the adjacent pile foundation 3. The anchoring connection of foundation 3 helps retaining plate 4 maintain stability under lateral forces, effectively distributing external loads and preventing deformation or instability due to water flow, soil pressure, and other factors. The outer edge of retaining plate 4 on the side closest to the river 100 is on the same vertical plane as the outer edge of the adjacent pile foundation 3, ensuring that the design of retaining plate 4 meets the impact requirements of water flow. This not only reduces the lateral impact of water flow on retaining plate 4 and lowers the impact force of water flow on pile foundation 3 and the roadbed structure, but also improves the stability and durability of retaining plate 4 under changing water flow conditions. Furthermore, the bottom of roadbed section 12 facing the original road is provided with protrusions 7 along the direction of penetration into the stratum. These protrusions 7 can be inserted into the stratum, and their deep contact with the stratum effectively increases the friction between the roadbed base plate 1 and the ground, enhancing the anti-slip capability of the roadbed section and preventing displacement of the roadbed under lateral or longitudinal loads, ensuring that the structure does not loosen or shift during long-term use. In other embodiments, a subgrade 10 is laid at the bottom of the roadbed section 12 to maintain the flatness of the roadbed. The subgrade 10 can provide a flat surface at the bottom of the roadbed section 12, provide a uniform foundation for subsequent roadbed or pavement construction, fill the gaps or uneven parts of the roadbed, reduce the risk of uneven settlement, and maintain the flatness of the roadbed surface.

[0036] like Figure 1As shown, to improve drainage, in some embodiments, the cantilevered roadbed structure also includes a road surface cross slope 8. The road surface cross slope 8 is located above the top surface of the roadbed substrate 1 and slopes from the existing road towards the river 100 to facilitate road drainage. The slope of the top surface of the roadbed substrate 1 is consistent with the slope of the road surface cross slope 8. The road surface cross slope 8 allows rainwater to flow quickly towards the river 100, effectively removing accumulated water and preventing water from stagnating on the road surface. The consistent slope of the top surface of the roadbed substrate 1 with the road surface cross slope 8 helps ensure a uniform slope of the road surface, avoiding poor drainage or water accumulation due to inconsistent slope angles. The uniform slope ensures consistent water flow direction, improving drainage efficiency and further guaranteeing road safety and comfort. The slope range of the road surface cross slope 8 and the roadbed substrate 1 is between 2% and 6%, and can be set according to actual conditions.

[0037] like Figure 1 As shown, to improve traffic safety, in some embodiments, the cantilevered roadbed structure also includes guardrails 9. The guardrails 9 are longitudinally arranged along the roadbed body 1 at a position near the edge of the river 100 on the road surface cross slope 8 and / or at a position away from the edge of the river 100 on the original road. The guardrails 9 being arranged at a position near the river 100 on the road surface cross slope 8 and / or away from the edge of the river 100 on the original road can effectively prevent vehicles from sliding into the river 100 or other dangerous areas due to loss of control, deviation, or slippage during driving, ensuring the safety of the driver and protecting the environment of the river 100. The guardrails 9 can also protect the safety of pedestrians and non-motorized vehicles, remind drivers and pedestrians of the road boundaries, and reduce the occurrence of traffic accidents.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cantilevered roadbed structure for road widening operations in riverside areas, characterized in that: The cantilevered roadbed structure includes: The roadbed body (1) includes a cantilever section (11) and a roadbed section (12). The cantilever section (11) is located on the side closer to the river (100), and the roadbed section (12) is located on the side closer to the existing road. The cantilever section (11) and the roadbed section (12) are integrally connected. The roadbed body (1) is provided with multiple sets of prestressed steel strands (2). The tensioning end of the prestressed steel strands (2) is located on the side of the cantilever section (11) facing the river (100), and the anchoring end of the prestressed steel strands (2) is located on the side of the roadbed section (12) facing the existing road. Multiple pile foundations (3) are arranged longitudinally and spaced apart along the roadbed body (1). The top of each pile foundation (3) is connected to the bottom of the cantilever section (11) near the roadbed section (12). The bottom of each pile foundation (3) can be inserted into the stratum to support the cantilever section (11). Multiple retaining plates (4) are longitudinally distributed along the roadbed body (1), and each retaining plate (4) is connected between adjacent pile foundations (3) to facilitate the protection and stability of the roadbed body (1).

2. The cantilevered roadbed structure according to claim 1, characterized in that, Multiple sets of prestressed steel strands (2) are distributed longitudinally and spaced apart along the roadbed body (1), and each set of prestressed steel strands (2) is arranged transversely along the roadbed body (1).

3. The cantilevered roadbed structure according to claim 2, characterized in that, The prestressed steel strand (2) is inclinedly arranged inside the roadbed body (1), and the distance between the anchoring end of the prestressed steel strand (2) and the upper surface of the roadbed section (12) is greater than the distance between the tensioning end of the prestressed steel strand (2) and the upper surface of the cantilever section (11).

4. The cantilevered roadbed structure according to claim 1, characterized in that, The thickness of the cantilever section (11) gradually increases laterally along the roadbed body (1) from the river (100) toward the original road.

5. The cantilevered roadbed structure according to claim 4, characterized in that, The bottom of the cantilever section (11) is provided with a first chamfer (5) and a second chamfer (6) in sequence from the river (100) toward the original road. The first chamfer (5) and the second chamfer (6) are continuous, and the angle of the first chamfer (5) is smaller than the angle of the second chamfer (6). The width of the first chamfer (5) is greater than the width of the second chamfer (6).

6. The cantilevered roadbed structure according to claim 1, characterized in that, Multiple pile foundations (3) are distributed at equal intervals along the longitudinal direction of the roadbed body (1), and the main reinforcement of each pile foundation (3) can be anchored to the bottom of the roadbed body (1).

7. The cantilevered roadbed structure according to claim 6, characterized in that, The top reinforcement of each retaining plate (4) is anchored to the bottom of the roadbed body (1); the reinforcement on both sides of each retaining plate (4) is anchored to the adjacent pile foundation (3); the outer edge of each retaining plate (4) on the side closest to the river (100) is located in the same vertical plane as the outer edge of the adjacent pile foundation (3).

8. The cantilevered roadbed structure according to claim 7, characterized in that, The roadbed section (12) has a protrusion (7) at the bottom of the side facing the original road along the direction of penetrating the stratum, and the protrusion (7) can be inserted into the stratum.

9. The cantilevered roadbed structure according to any one of claims 1-8, characterized in that, The cantilevered roadbed structure also includes a road surface cross slope (8), which is located above the top surface of the roadbed substrate (1). The road surface cross slope (8) slopes from the original road towards the river (100) to facilitate road drainage. The slope of the top surface of the roadbed substrate (1) is consistent with the slope of the road surface cross slope (8).

10. The cantilevered roadbed structure according to claim 9, characterized in that, The cantilevered roadbed structure also includes guardrails (9), which are longitudinally positioned along the roadbed body (1) at a location near the edge of the river (100) on the road surface cross slope (8) and / or... The guardrail (9) is longitudinally positioned along the roadbed body (1) at the edge of the original road away from the river (100).

Images