A widened splicing roadbed structure

Abstract

This utility model provides a widened spliced ​​roadbed structure, including: a basic roadbed and a connecting structure; the connecting structure is disposed on one side of the basic roadbed, and includes a tensile plate, one end of which is inserted into the basic roadbed, and the other end is connected to the splicing part; a pad layer and a filling layer are respectively disposed at the bottom and top of the tensile plate, and are connected to the basic roadbed as an integral structure. From bottom to top, the top of this integral structure is successively laid with a filling layer, an earthwork layer, and a waterproof pavement layer, forming an integral widened spliced ​​roadbed structure. This utility model, by setting a connecting structure with a tensile plate on one side of the basic roadbed, effectively enhances the connection strength and overall stability between the old and new roadbeds, reducing cracking problems caused by settlement differences. Simultaneously, the earthwork layer and the waterproof pavement layer effectively block rainwater infiltration, avoiding softening and collapse problems caused by water accumulation inside the new roadbed, thereby improving the bearing capacity and service life of the widened roadbed.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, and more specifically, to a widened splicing roadbed structure. Background Technology

[0002] The widening and splicing of the roadbed structure is a key part of road reconstruction and expansion projects. Its core function is to achieve a stable connection between the old and new roadbeds, ensuring the integrity, load-bearing capacity and long-term performance of the widened road.

[0003] Currently, in the use of existing roadbed structures, due to the fact that most existing roadbeds are spliced ​​and widened, the new roadbed is more prone to settlement, which leads to cracks between the old and new foundations. This reduces the practicality of the roadbed to a certain extent. In addition, due to rainwater and the relatively soft nature of the new foundation, rainwater tends to accumulate inside the new foundation, which may cause the new foundation to collapse or break, further reducing its practicality. Summary of the Invention

[0004] In view of this, the present invention proposes a widened splicing roadbed structure, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] This utility model proposes a widened spliced ​​roadbed structure, comprising: a basic roadbed and a connecting structure; wherein,

[0006] The connecting structure is disposed on one side of the foundation roadbed, and the connecting structure includes a tensile plate, one end of which is inserted into the foundation roadbed, and the other end is connected to the splicing part;

[0007] The bottom and top of the tensile plate are respectively provided with a pad layer and a filling layer, and are connected to the foundation roadbed as an integral structure. The top of the integral structure is laid with an earthwork cloth layer and a waterproof pavement layer from bottom to top, forming an integral widened spliced ​​roadbed structure.

[0008] Furthermore, in the aforementioned widened and spliced ​​roadbed structure, the connecting structure further includes: multiple sets of support tie rods; wherein,

[0009] Each set of support rods is arranged horizontally at intervals inside the tensile plate, and is fixedly connected to the tensile plate by a plurality of fasteners inserted vertically inside the tensile plate.

[0010] Furthermore, in the aforementioned widened spliced ​​roadbed structure, the fasteners are bolts, pins, or anchor bolts.

[0011] Furthermore, in the aforementioned widened spliced ​​roadbed structure, the tensile plate is made of concrete; and / or the supporting tie rod is made of steel reinforcement; and / or the filling layer is a cohesive soil layer.

[0012] Furthermore, in the aforementioned widened spliced ​​roadbed structure, the tensile plate is provided with a plurality of first connecting holes at one end near the foundation roadbed, and the corresponding part of the foundation roadbed is provided with a plurality of second connecting holes and a plurality of insert rods. Each insert rod is sequentially inserted into the first connecting hole and the second connecting hole to realize the insertion of the tensile plate and the foundation roadbed.

[0013] Furthermore, in the above-mentioned widened spliced ​​roadbed structure, a connecting groove is provided horizontally at one end of the foundation roadbed near the tensile plate, and each of the second connecting holes is respectively opened vertically on the top and bottom walls of the connecting groove to ensure that the insertion rod is accurately inserted and fixed to the tensile plate and the foundation roadbed.

[0014] Furthermore, in the aforementioned widened spliced ​​roadbed structure, the end of the tensile plate furthest from the foundation roadbed is connected to an anti-displacement pile.

[0015] Furthermore, in the aforementioned widened spliced ​​roadbed structure, the top of the anti-displacement pile is flush with the filling layer.

[0016] Furthermore, in the aforementioned widened spliced ​​roadbed structure, multiple sets of grooves are formed on the outer surface of the upper end of the waterproof pavement layer, and the bottom surface of each set of grooves is inclined downward from the inside to the outside.

[0017] Furthermore, in the aforementioned widened spliced ​​roadbed structure, each of the grooves is equally spaced, and one end of each groove is provided with a sloped structure, which smoothly transitions with the bottom of the groove.

[0018] The widened spliced ​​roadbed structure of this utility model effectively enhances the connection strength and overall stability between the old and new roadbeds by setting a connection structure with a tensile plate on one side of the foundation roadbed, reducing cracking problems caused by settlement differences. Simultaneously, by incorporating earthwork layers and a waterproof pavement layer, this structure effectively prevents rainwater infiltration, avoiding softening and collapse problems caused by water accumulation inside the new roadbed, thereby significantly improving the bearing capacity and service life of the widened roadbed. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1This is a three-dimensional structural diagram of the widened spliced ​​roadbed structure provided in an embodiment of the present utility model;

[0021] Figure 2 This is a partially exploded view of the three-dimensional structure of the widened spliced ​​roadbed structure provided in an embodiment of the present utility model;

[0022] Figure 3 Another partially exploded view of the three-dimensional structure of the widened spliced ​​roadbed structure provided in this embodiment of the utility model;

[0023] Figure 4 for Figure 3 Enlarged diagram of point A in the middle. Detailed Implementation

[0024] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] See Figure 1 and Figure 2 The widened spliced ​​roadbed structure of this utility model embodiment includes: a basic roadbed 1 and a connecting structure 2; wherein, the connecting structure 2 is disposed on one side of the basic roadbed 1, and the connecting structure 2 includes a tensile plate 21, one end of the tensile plate 21 is inserted into the basic roadbed 1, and the other end is connected to the splicing part; the bottom and top of the tensile plate 21 are respectively provided with a pad layer 27 and a filling layer 28, and are connected to the basic roadbed 1 as an integral structure; the top of the integral structure is laid with an earthwork cloth layer 3 and a waterproof pavement layer 4 from bottom to top, forming an integral widened spliced ​​roadbed structure.

[0026] Specifically, the basic roadbed 1 refers to the original roadbed. The basic roadbed 1 and the connecting structure 2 are connected as a whole by the tensile plate 21 to form the basic structure of the new roadbed. In addition, the filling layer 28 arranged on the tensile plate 21 and the earthwork cloth layer 3 and the impermeable pavement layer 4 arranged on the overall structure of the tensile plate 21 and the basic roadbed 1 are finally formed into the new roadbed.

[0027] The tensile plate 21 penetrates the connection between the old and new roadbeds, with one end inserted into the foundation roadbed 1 and the other end embedded in the spliced ​​overall roadbed structure to achieve a stable connection between the old and new foundations.

[0028] In this embodiment, the connection structure 2 further includes: multiple sets of support rods 22; wherein each set of support rods 22 is arranged horizontally at intervals inside the tensile plate 21, and is fixedly connected to the tensile plate 21 by multiple fasteners inserted vertically inside the tensile plate 21.

[0029] Specifically, the tensile plate 21 can be a square plate. Multiple sets of support rods 22 can be embedded inside the tensile plate 21 in parallel and at equal intervals. Each support rod 22 has multiple fasteners inserted at equal intervals along the vertical direction.

[0030] See Figure 3 and Figure 4 The subbase layer 27, the tensile plate 21, the filling layer 28, the earthwork fabric layer 3, and the impermeable pavement layer 4 are stacked sequentially from bottom to top.

[0031] Specifically, the tensile plate 21 is made of concrete, and the subbase 27 is made of the same material as the foundation subgrade 1. The filling layer 28 is a cohesive soil layer. The earthwork fabric layer 3 is made of polyester material, and the bottom of the earthwork fabric layer 3 is attached to the outer surface of the top of the integral structure formed by the foundation subgrade 1 and the filling layer 28. The dimensions of the earthwork fabric layer 3 and the impermeable pavement layer 4 are adapted to the integral structure formed by the foundation subgrade 1, the filling layer 28, and the externally moved piles.

[0032] In this embodiment, the good tensile strength and high strength of the tensile plate 21 itself can reduce the settlement of the new foundation. The high strength and toughness of the supporting tie rod 22 itself can increase the service life of the tensile plate 21. At the same time, the design of the subbase 27 being made of the same material as the old foundation can reduce the interface difference between the old and new foundations, thereby improving the stability, durability and driving safety of the road structure. In addition, the good stability and buffering properties of the subbase 27 itself can coordinate the stiffness difference between the old and new foundations, thereby avoiding uneven settlement of the new foundation. Furthermore, the high strength and chemical stability of the earthwork fabric itself can enhance the integrity between the foundation subgrade 1 and the connecting structure 2, thereby enhancing the integration between the foundation subgrade 1 and the filling layer 28. Preferably, the end of the tensile plate 21 furthest from the foundation subgrade 1 is connected to an anti-displacement pile 23, that is, the other end of each set of support rods 22 is fixedly connected to an anti-displacement pile 23. The anti-displacement pile 23 can be a cuboid structure, with its top flush with the filling layer 28. The anti-displacement pile 23 can block the position of the subgrade layer 27 and the filling layer 28, thereby preventing the subgrade layer 27 and the filling layer 28 from moving outwards under external pressure, which would cause the new subgrade to settle.

[0033] In this embodiment, the tensile plate 21, each set of supporting tie rods 22, the padding layer 27 located at the bottom of the tensile plate 21, the filling layer 28 located at the top of the tensile plate 21, and the anti-movement piles 3 together form the connecting structure 2. The earthwork layer 3 and the impermeable pavement layer 4 are laid sequentially from bottom to top on the upper surface of the integrated structure formed by the connecting structure 2 and the foundation subgrade 1.

[0034] More specifically, the support rod 22 is made of steel bars, preferably high-strength steel bars, and is evenly embedded in the tensile plate 21 to enhance its lateral tensile strength. The fasteners can be bolts, pins, or anchor bolts, used to firmly fix the support rod 22 inside the tensile plate 21 to form an integral load-bearing structure.

[0035] In this embodiment, the new roadbed refers to the integral widened roadbed structure formed by splicing and expanding one side of the basic roadbed 1 through the connecting structure 2, and then laying the filling layer 28, the earthwork cloth layer 3 and the impermeable pavement layer 4 in sequence.

[0036] The filling layer 28 is a cohesive soil layer, and its upper surface is flush with the upper surface of the foundation subgrade 1. One end of the tensile plate 21 is inserted into the foundation subgrade 1, and the other end is sandwiched between the pad layer 27 and the filling layer 28. The size and shape of the pad layer 27 and the filling layer 28 match the connecting groove 29 on the tensile plate 21 and the foundation subgrade 1 to achieve a tight connection with the foundation subgrade.

[0037] It is evident from the above that the widened spliced ​​roadbed structure provided in this embodiment, by setting a connection structure with a tensile plate on one side of the foundation roadbed, effectively enhances the connection strength and overall stability between the old and new roadbeds, reducing cracking problems caused by settlement differences. Simultaneously, by incorporating earthwork layers and a waterproof pavement layer, this structure effectively prevents rainwater infiltration, avoiding softening and collapse problems caused by water accumulation inside the new roadbed, thereby significantly improving the bearing capacity and service life of the widened roadbed.

[0038] See Figure 3 In the above embodiment, the tensile plate 21 is provided with a plurality of first connecting holes 24 at one end near the foundation roadbed 1, and the foundation roadbed 1 is provided with a plurality of second connecting holes 25 and a plurality of insert rods 26 at the corresponding part. Each insert rod 26 is sequentially inserted into the first connecting hole 24 and the second connecting hole 25 to realize the insertion of the tensile plate 21 and the foundation roadbed 1.

[0039] Furthermore, the foundation roadbed 1 is provided with a connecting groove 29 in the horizontal direction at one end near the tensile plate 21, and each of the second connecting holes 25 is respectively opened in the top and bottom walls of the connecting groove 29 in the vertical direction to ensure that the insertion rod 26 is accurately inserted into and fixes the tensile plate 21 and the foundation roadbed 1.

[0040] Specifically, one end of each set of support rods 22 abuts against the side wall of each first connecting hole 24 opposite to the foundation roadbed 1. The diameters of each first connecting hole 24 and each second connecting hole 25 are identical and they are connected one-to-one. A connecting groove 29 is provided facing the tensile plate 21, allowing the tensile plate 21 to be inserted into the connecting groove 29. It can be seen that by setting multiple sets of support rods 22, the tensile plate 21 can be made more stable during use.

[0041] The internal dimensions of the first connecting hole 24 and the second connecting hole 25 are adapted to the external dimensions of the insert rod 26, and the external dimensions of one end of the tensile plate 21 are adapted to the internal dimensions of the connecting groove 29. The upper and lower surfaces of the insert rod 26 are flush with the upper and lower surfaces of the foundation roadbed 1.

[0042] It can be seen that inserting the rod 26 into the first connecting hole 24 and the second connecting hole 25 can be more stable, thereby completing the connection between the foundation roadbed 1 and the tensile plate 21, thus improving the tensile strength of the new roadbed. At the same time, this design makes it more stable when one end of the tensile plate 21 is inserted into the connecting groove 29.

[0043] Combination Figure 1 and Figure 3 In the above embodiment, multiple sets of grooves 41 are formed on the outer surface of the upper end of the waterproof pavement layer 4, and the bottom surface of each set of grooves 41 is inclined downward from the inside to the outside.

[0044] Specifically, each set of grooves 41 can be arranged horizontally or vertically along the upper surface of the waterproof pavement layer 4.

[0045] In practice, the upper surface of the impermeable pavement layer 4 is provided with a plurality of drainage grooves 41 distributed in the transverse or longitudinal direction. The bottom surface of the grooves 41 is inclined so that rainwater falling on the outer surface of the impermeable pavement layer 4 can be quickly discharged along the inclined surface, preventing water from seeping into the interior of the new foundation.

[0046] Preferably, the grooves 41 are evenly spaced, and one end of each groove 41 is provided with a bevel structure to guide the water flow in the groove 41 to the outside; and the bevel transitions smoothly with the bottom of the groove to reduce water flow resistance and improve drainage efficiency.

[0047] The working principle of this utility model is as follows: When using the roadbed, by inserting the outer surface of one end of the tensile plate 21 into the inside of the connecting groove 29, multiple sets of insert rods 26 can be inserted into the inside of multiple sets of second connecting holes 25 and first connecting holes 24, thereby completing the connection between the foundation roadbed 1 and the tensile plate 21. Then, the earthwork cloth layer 3 can be covered on the outer surface of the foundation roadbed 1 and the upper end of the filling layer 28, and the impermeable pavement layer 4 can be covered on the outer surface of the upper end of the earthwork cloth layer 3. At this time, the splicing between the old and new foundations is completed, and the connection is achieved through the tensile plate 21, the supporting tie rod 22, the first connecting hole 24, the second connecting hole 25 and the insert rod 26. The coordination between 6 can reduce the likelihood of settlement in the new roadbed. The good tensile strength and chemical stability of the earthwork layer 3 can enhance the integrity between the foundation roadbed 1 and the filling layer 28. The anti-displacement piles 23 can block the position of the subbase 27 and the filling layer 28, thus preventing the subbase 27 and the filling layer 28 from moving to the outside of the new roadbed under external pressure, which would cause the new roadbed to settle. Furthermore, the design of the groove 41 on the upper outer surface of the waterproof pavement layer 4 can drain rainwater outward, thus preventing the roadbed from collapsing and being damaged by water seepage.

[0048] In summary, this utility model inserts one end of a tensile plate into the connecting groove, and then inserts multiple sets of rods into the corresponding second and first connecting holes. This completes the connection between the old foundation and the tensile plate. The cooperation between the tensile plate, supporting rods, first and second connecting holes, and the rods helps prevent settlement of the new roadbed. Furthermore, the excellent tensile strength and chemical stability of the earthwork layer enhance the integrity between the old foundation and the filling layer, thus preventing cracks from forming between them. The condition of the joints improves the practicality of the roadbed to a certain extent. Furthermore, the design of multiple grooves on the upper part of the impermeable pavement allows rainwater to flow outward along the inclined surface inside the grooves when it falls on the outer surface of the upper part of the impermeable pavement. This reduces the time that rainwater accumulates on the outer surface of the upper part of the impermeable pavement, thereby reducing the occurrence of rainwater seeping into the filling layer. This can prevent the new foundation from collapsing or being damaged, thus improving the practicality of the roadbed to a certain extent. Moreover, its overall structure is simple and reasonable in design, highly practical, and easy to promote and apply.

[0049] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A widened spliced ​​roadbed structure, characterized in that, include: Basic roadbed and connecting structures; among which, The connecting structure is disposed on one side of the foundation roadbed, and the connecting structure includes a tensile plate, one end of which is inserted into the foundation roadbed, and the other end is connected to the splicing part; The bottom and top of the tensile plate are respectively provided with a pad layer and a filling layer, and are connected to the foundation roadbed as an integral structure. The top of the integral structure is laid with an earthwork cloth layer and a waterproof pavement layer from bottom to top, forming an integral widened spliced ​​roadbed structure.

2. The widened spliced ​​roadbed structure according to claim 1, characterized in that, The connection structure further includes: multiple sets of support rods; wherein... Each set of support rods is arranged horizontally at intervals inside the tensile plate, and is fixedly connected to the tensile plate by a plurality of fasteners inserted vertically inside the tensile plate.

3. The widened spliced ​​roadbed structure according to claim 2, characterized in that, The fastener is a bolt, pin, or anchor bolt.

4. The widened spliced ​​roadbed structure according to claim 2, characterized in that, The tensile plate is made of concrete; and / or the supporting tie rod is made of steel bars; and / or the filling layer is a cohesive soil layer.

5. The widened spliced ​​roadbed structure according to claim 1, characterized in that, The tensile plate has multiple first connecting holes at one end near the foundation subgrade, and the corresponding part of the foundation subgrade has multiple second connecting holes and multiple insert rods. Each insert rod is sequentially inserted into the first connecting hole and the second connecting hole to realize the insertion of the tensile plate and the foundation subgrade.

6. The widened spliced ​​roadbed structure according to claim 5, characterized in that, The foundation roadbed has a horizontally arranged connecting groove at one end near the tensile plate, and each of the second connecting holes is opened vertically on the top and bottom walls of the connecting groove to ensure that the insertion rod is accurately inserted and fixed to the tensile plate and the foundation roadbed.

7. The widened spliced ​​roadbed structure according to claim 1, characterized in that, The end of the tensile plate furthest from the foundation subgrade is connected to an anti-movement pile.

8. The widened spliced ​​roadbed structure according to claim 7, characterized in that, The top of the anti-movement pile is flush with the filling layer.

9. The widened spliced ​​roadbed structure according to claim 1, characterized in that, The outer surface of the upper end of the waterproof pavement layer has multiple sets of grooves, and the bottom surface of each set of grooves is inclined downward from the inside to the outside.

10. The widened spliced ​​roadbed structure according to claim 9, characterized in that, The grooves are evenly spaced, and one end of each groove has a beveled structure that smoothly transitions to the bottom of the groove.

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