Widened spliced roadbed structure

Abstract

The invention provides a widened spliced roadbed structure. The widened spliced roadbed structure comprises a foundation roadbed and a connecting structure, the connecting structure is arranged on one side of the foundation roadbed and comprises a tensile plate, one end of the tensile plate is inserted into the foundation roadbed, and the other end of the tensile plate is connected with the splicing part; the bottom and the top of the tensile plate are respectively provided with a bottom layer and a filling layer, the tensile plate and the foundation roadbed are connected into an integrated structure, and the filling layer, an earthwork cloth layer and an anti-seepage pavement layer are sequentially laid on the top of the integrated structure from bottom to top to form the integrated widened spliced roadbed structure. The connecting structure with the tensile plates is arranged on one side of the foundation roadbed, so that the connecting strength and the overall stability between the new roadbed and the old roadbed are effectively enhanced, and the crack problem caused by settlement difference is reduced. Meanwhile, through the earthwork cloth layer and the water seepage prevention pavement layer, rainwater seepage can be effectively blocked, the problems of softening, collapse and the like caused by accumulated water in the new roadbed are avoided, and therefore the bearing capacity of the widened roadbed is improved, and the service life of the widened roadbed is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of road construction, in particular to a widened and spliced ​​roadbed structure. Background Art

[0002] Roadbed widening and splicing roadbed structure is a key link in road reconstruction and expansion projects. Its core role is to achieve a stable connection between the old and new roadbeds, and to ensure the integrity, bearing capacity and long-term performance of the widened road.

[0003] At present, during the use of the roadbed structure in the existing technology, the new roadbed is more likely to sink after the existing roadbed is spliced ​​and widened, resulting in cracks between the new and old foundations, which reduces the practicality of the roadbed to a certain extent. In addition, when most of the existing roadbeds are in use, due to rainwater and the relatively soft condition of the new foundation, rainwater is more likely to accumulate inside the new foundation, which may cause the new foundation to collapse or be damaged, reducing the practicality of the roadbed to a certain extent. Summary of the Invention

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

[0005] The present invention proposes a widened spliced ​​roadbed structure, comprising: a basic roadbed and a connecting structure; wherein, The connecting structure is arranged on one side of the basic roadbed, and the connecting structure includes a tensile plate, one end of which is inserted into the basic roadbed, and the other end is connected to the splicing part; The bottom and top of the tensile plate are respectively provided with a cushion layer and a filling layer, and are connected to the basic roadbed to form an integrated structure. The top of the integrated structure is laid with an earthwork layer and an anti-seepage pavement layer in sequence from bottom to top to form an integral widened spliced ​​roadbed structure.

[0006] Furthermore, in the above widened and spliced ​​roadbed structure, the connection structure further comprises: a plurality of support rods; wherein, Each group of the support rods is arranged at intervals inside the tensile plate along the horizontal direction, and is fixedly connected to the tensile plate through a plurality of fasteners inserted inside the tensile plate along the vertical direction.

[0007] Furthermore, in the above widened and spliced ​​roadbed structure, the fasteners are bolts, pins or anchor screws.

[0008] Furthermore, in the above-mentioned widened and spliced ​​roadbed structure, the tensile plate is made of concrete; and / or the supporting rod is made of steel bars; and / or the filling layer is a clay layer.

[0009] Furthermore, in the above-mentioned widened spliced ​​roadbed structure, a plurality of first connection holes are provided at one end of the tensile plate close to the basic roadbed, and a plurality of second connection holes and a plurality of insertion rods are provided at the corresponding parts of the basic roadbed. Each of the insertion rods is sequentially passed through the first connection hole and the second connection hole to realize the connection between the tensile plate and the basic roadbed.

[0010] Furthermore, in the above-mentioned widened spliced ​​roadbed structure, a connecting groove is provided in the horizontal direction at one end of the foundation roadbed close to the tensile plate, and each second connecting hole is opened in the vertical direction on the top wall and bottom wall of the connecting groove respectively to ensure that the insertion rod is accurately inserted into and fixes the tensile plate and the foundation roadbed.

[0011] Furthermore, in the above widened and spliced ​​roadbed structure, an end of the tensile plate away from the basic roadbed is connected to an anti-outward migration pile.

[0012] Furthermore, in the widened and spliced ​​roadbed structure, the top of the anti-outward migration pile is flush with the filling layer.

[0013] Furthermore, in the widened and spliced ​​roadbed structure, a plurality of grooves are provided on the outer surface of the upper end of the water-impermeable pavement layer, and the bottom surface of each group of the grooves is arranged to be inclined downward from the inside to the outside.

[0014] Furthermore, in the widened and spliced ​​roadbed structure, the grooves are arranged at equal intervals, and one end of each groove is provided with a slope structure, and the slope smoothly transitions to the bottom of the groove.

[0015] The widened, spliced ​​roadbed structure of this invention effectively enhances the connection strength and overall stability between the new and old roadbeds by installing a connecting structure with a tensile plate on one side of the base roadbed, reducing cracking caused by differential settlement. Furthermore, by providing an earthwork layer and an impermeable pavement layer, this structure effectively blocks rainwater infiltration, preventing softening and collapse caused by water accumulation within the new roadbed. This significantly improves the bearing capacity and service life of the widened roadbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings: Figure 1 A schematic diagram of the three-dimensional structure of a widened and spliced ​​roadbed structure provided by an embodiment of the present invention; Figure 2 A partial exploded schematic diagram of the three-dimensional structure of the widened and spliced ​​roadbed structure provided by an embodiment of the present invention; Figure 3 Another partial exploded schematic diagram of the three-dimensional structure of the widened and spliced ​​roadbed structure provided by an embodiment of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle. DETAILED DESCRIPTION

[0017] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, unless there is a conflict, the embodiments of the present disclosure and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] See Figure 1 and Figure 2 The widened spliced ​​roadbed structure of the embodiment of the present invention includes: a basic roadbed 1 and a connecting structure 2; wherein the connecting structure 2 is arranged 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 cushion layer 27 and a filling layer 28, and are connected to the basic roadbed 1 to form an integrated structure, and the top of the integrated structure is laid with an earthwork cloth layer 3 and an anti-seepage pavement layer 4 in sequence from bottom to top to form an integral widened spliced ​​roadbed structure.

[0019] Specifically, the base roadbed 1 refers to the existing roadbed. The base roadbed 1 and the connecting structure 2 are connected together via the tensile plates 21 to form the foundation structure of the new roadbed. Furthermore, the filler layer 28 disposed on the tensile plates 21, and the earthwork layer 3 and impermeable pavement layer 4 disposed above the integrated structure of the tensile plates 21 and base roadbed 1 ultimately form the new roadbed.

[0020] The tensile plate 21 passes through the connection between the new and old roadbeds, with one end inserted into the foundation roadbed 1 and the other end embedded in the overall roadbed structure after splicing, so as to achieve a stable connection between the new and old foundations.

[0021] In this embodiment, the connection structure 2 also includes: multiple groups of support rods 22; wherein, each group of the support rods 22 is arranged at intervals inside the tensile plate 21 along the horizontal direction, and is fixedly connected to the tensile plate 21 through multiple fasteners inserted inside the tensile plate 21 along the vertical direction.

[0022] Specifically, the tensile plate 21 may be a square plate. A plurality of support rods 22 may be embedded in the tensile plate 21 in parallel and at equal intervals. Each support rod 22 is provided with a plurality of fasteners at equal intervals along the vertical direction.

[0023] See Figure 3 and Figure 4 The cushion layer 27, the tensile plate 21, the filling layer 28, the earthwork cloth layer 3 and the anti-seepage pavement layer 4 are stacked in sequence from bottom to top.

[0024] Specifically, the tensile plate 21 is made of concrete, and the bedding layer 27 is made of the same material as the foundation roadbed 1. The filling layer 28 is a clay layer. The earthwork layer 3 is made of polyester, with the bottom of the earthwork layer 3 attached to the top outer surface of the integrated structure formed by the foundation roadbed 1 and the filling layer 28. The dimensions of the earthwork layer 3 and the impermeable pavement layer 4 are compatible with the integrated structure formed by the foundation roadbed 1, the filling layer 28, and the outward displacement piles.

[0025] In this embodiment, the good tensile strength and high strength of the tensile plate 21 itself can reduce the settlement of the new foundation, and the high strength and toughness of the supporting rod 22 itself can increase the service life of the tensile plate 21. At the same time, the design of the base layer 27 itself and the same material as the old foundation can reduce the interface difference between the old foundation and the new foundation, thereby improving the stability, durability and driving safety of the road structure. The design can coordinate the stiffness difference between the old foundation and the new foundation through the good stability and buffering properties of the base layer 27 itself, thereby avoiding uneven settlement of the new foundation. In addition, the high strength and chemical stability of the earthwork cloth itself can enhance the integrity between the basic roadbed 1 and the connecting structure 2, thereby enhancing the integrity between the basic roadbed 1 and the filling layer 28. Preferably, the end of the tensile plate 21 away from the foundation roadbed 1 is connected to an anti-outward migration pile 23, that is, the other end of each group of support rods 22 is fixedly connected to an anti-outward migration pile 23. The anti-outward migration pile 23 can be a rectangular parallelepiped structure, and its top is flush with the filling layer 28. The anti-outward migration pile 23 can block the position of the base layer 27 and the filling layer 28, thereby preventing the base layer 27 and the filling layer 28 from moving toward the outside of the new roadbed when subjected to external pressure, causing the new roadbed to sink.

[0026] In this embodiment, the tensile plate 21, the various groups of support rods 22, the underlay layer 27 at the bottom of the tensile plate 21, the filling layer 28 at the top of the tensile plate 21, and the anti-outward migration piles 3 collectively form the connection 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 connection structure 2 and the foundation roadbed 1.

[0027] More specifically, the support rods 22 are made of steel bars, preferably high-strength steel bars, and are evenly embedded in the tensile plate 21 to enhance its transverse tensile strength. The fasteners, which can be bolts, pins, or anchor screws, are used to securely fasten the support rods 22 to the interior of the tensile plate 21, forming an integral load-bearing structure.

[0028] In this embodiment, the new roadbed refers to an integral widened roadbed structure formed by sequentially laying a filling layer 28, an earthwork layer 3 and an anti-seepage pavement layer 4 on one side of the basic roadbed 1 after being spliced ​​and expanded by a connecting structure 2.

[0029] The filling layer 28 is a clay layer, its upper surface flush with the upper surface of the foundation roadbed 1. One end of the tensile plate 21 is inserted into the foundation roadbed 1, and the other end is sandwiched between the bedding layer 27 and the filling layer 28. The size and shape of the bedding layer 27 and the filling layer 28 match the connection grooves 29 on the tensile plate 21 and the foundation roadbed 1, ensuring a tight connection with the foundation roadbed.

[0030] As can be clearly seen from the above, the widened and spliced ​​roadbed structure provided in this embodiment, by providing a connection structure with a tensile plate on one side of the base roadbed, effectively enhances the connection strength and overall stability between the new and old roadbeds, reducing cracking caused by differential settlement. Furthermore, by providing an earthwork layer and an impermeable pavement layer, this structure effectively blocks rainwater infiltration, preventing problems such as softening and collapse caused by water accumulation within the new roadbed, thereby significantly improving the bearing capacity and service life of the widened roadbed.

[0031] See Figure 3 In the above embodiment, a plurality of first connection holes 24 are provided at one end of the tensile plate 21 close to the foundation roadbed 1, and a plurality of second connection holes 25 and a plurality of insertion rods 26 are provided at the corresponding position of the foundation roadbed 1. Each of the insertion rods 26 is sequentially passed through the first connection hole 24 and the second connection hole 25 to realize the connection between the tensile plate 21 and the foundation roadbed 1.

[0032] Furthermore, a connecting groove 29 is provided in the horizontal direction at one end of the foundation roadbed 1 close to the tensile plate 21, and each second connecting hole 25 is opened in the top wall and bottom wall of the connecting groove 29 in the vertical direction respectively to ensure that the insertion rod 26 is accurately inserted into and fixes the tensile plate 21 and the foundation roadbed 1.

[0033] Specifically, one end of each set of support rods 22 abuts the sidewall of each first connection hole 24 opposite the foundation roadbed 1. Each first connection hole 24 and each second connection hole 25 have the same diameter and are in one-to-one communication. A connection slot 29 is positioned toward one side of the tensile plate 21, allowing the plate 21 to be inserted into the slot. This demonstrates that providing multiple sets of support rods 22 provides greater stability for the tensile plate 21 during use.

[0034] The inner dimensions of the first and second connecting holes 24 and 25 match the outer dimensions of the rod 26, and the outer dimensions of one end of the tensile plate 21 match the inner dimensions of the connecting groove 29. The upper and lower surfaces of the rod 26 are flush with the upper and lower surfaces of the foundation roadbed 1.

[0035] It can be seen that by inserting the insertion rod 26 into the first connecting hole 24 and the second connecting hole 25, it can be more stable, thereby completing the connection between the basic roadbed 1 and the tensile plate 21, thereby improving the tensile resistance 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.

[0036] Combine Figure 1 and Figure 3 In the above embodiment, a plurality of grooves 41 are provided on the outer surface of the upper end of the anti-seepage pavement layer 4, and the bottom surface of each group of the grooves 41 is inclined downward from the inside to the outside.

[0037] Specifically, each group of grooves 41 can be arranged horizontally or vertically on the upper surface of the anti-seepage pavement layer 4.

[0038] In specific implementation, the upper surface of the anti-seepage pavement layer 4 is provided with a plurality of drainage grooves 41 distributed horizontally or vertically, and the bottom surface of the grooves 41 is inclined so that rainwater falling on the outer surface of the anti-seepage pavement layer 4 can be quickly discharged along the inclined surface to prevent accumulated water from penetrating into the new foundation.

[0039] Preferably, the grooves 41 are arranged at equal intervals, and one end of each groove 41 is provided with a slope structure for guiding the water in the groove 41 to flow to the outside; and the slope smoothly transitions to the bottom of the groove to reduce water flow resistance and improve drainage efficiency.

[0040] The working principle of the present invention is as follows: when the roadbed is used, the outer surface of one end of the tensile plate 21 is inserted into the interior of the connecting groove 29. At this time, multiple groups of insertion rods 26 can be respectively inserted into the interior of multiple groups of second connecting holes 25 and first connecting holes 24, thereby completing the connection between the basic roadbed 1 and the tensile plate 21. Then, the earthwork layer 3 can be covered on the outer surface of the upper end of the basic roadbed 1 and the filling layer 28, and the anti-seepage pavement layer 4 can be covered on the outer surface of the upper end of the earthwork layer 3. At this time, the new and old foundations are spliced ​​together, and the tensile plate 21, the supporting rod 22, the first connecting hole 24, the second connecting hole 25 and the insertion rod 26 are connected. The cooperation between them can reduce the situation where the new roadbed is more prone to settlement, and the good tensile strength and chemical stability of the earthwork layer 3 itself can enhance the integrity between the basic roadbed 1 and the filling layer 28, and the anti-outward migration piles 23 can block the position of the base layer 27 and the filling layer 28, thereby preventing the base layer 27 and the filling layer 28 from moving to the outside of the new roadbed when subjected to external pressure, thereby causing the new roadbed to settle, and the design of the groove 41 on the outer surface of the upper end of the anti-seepage pavement layer 4 can discharge rainwater outward, thereby avoiding the collapse and damage of the roadbed due to water seepage.

[0041] In summary, the present invention inserts one end of the tensile plate into the interior of the connecting groove, and then inserts multiple groups of insertion rods into the interior of multiple groups of second connecting holes and first connecting holes at corresponding positions. At this time, the connection between the old foundation and the tensile plate can be completed, so that the coordination between the tensile plate, the supporting rod, the first connecting hole, the second connecting hole and the insertion rod can avoid the situation where the new roadbed is more prone to settlement, and the good tensile strength and chemical stability of the earthwork cloth layer itself can enhance the integrity between the old foundation and the filling layer, thereby avoiding the generation of cracks between the old foundation and the filling layer. The situation has improved the practicality of the roadbed to a certain extent; further, through the design of multiple groups of grooves on the upper end of the anti-seepage pavement, when rainwater falls on the outer surface of the upper end of the anti-seepage pavement, the rainwater flows outward along the inclined surface inside the groove, thereby reducing the time for rainwater to accumulate on the outer surface of the upper end of the anti-seepage pavement, and further reducing the occurrence of rainwater infiltration into the filling layer, thereby avoiding the collapse or damage of the new foundation, and improving the practicality of the roadbed to a certain extent. Moreover, its overall structural design is simple and reasonable, with high practicality and easy to promote and apply.

[0042] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A widened spliced ​​roadbed structure, characterized in that: include: Basic roadbed and connecting structures; among which, The connecting structure is arranged on one side of the basic roadbed, and the connecting structure includes a tensile plate, one end of which is inserted into the basic roadbed, and the other end is connected to the splicing part; The bottom and top of the tensile plate are respectively provided with a cushion layer and a filling layer, and are connected to the basic roadbed to form an integrated structure. The top of the integrated structure is laid with an earthwork layer and an anti-seepage pavement layer in sequence from bottom to top to form an integral widened spliced ​​roadbed structure.

2. The widened and spliced ​​roadbed structure according to claim 1, characterized in that: The connection structure further includes: multiple groups of support rods; wherein, Each group of the support rods is arranged at intervals inside the tensile plate along the horizontal direction, and is fixedly connected to the tensile plate through a plurality of fasteners inserted inside the tensile plate along the vertical direction.

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

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

5. The widened and spliced ​​roadbed structure according to claim 1, characterized in that: The tensile plate is provided with a plurality of first connection holes at one end close to the foundation roadbed, and a plurality of second connection holes and a plurality of insertion rods are provided at the corresponding parts of the foundation roadbed. Each of the insertion rods is sequentially passed through the first connection hole and the second connection hole to realize the connection between the tensile plate and the foundation roadbed.

6. The widened and spliced ​​roadbed structure according to claim 5, characterized in that: A connecting groove is provided in the horizontal direction at one end of the foundation roadbed close to the tensile plate, and each second connecting hole is opened in the vertical direction on the top wall and bottom wall of the connecting groove to ensure that the insertion rod is accurately inserted into and fixes the tensile plate and the foundation roadbed.

7. The widened and spliced ​​roadbed structure according to claim 1, characterized in that: One end of the tensile plate away from the foundation roadbed is connected to an anti-outward migration pile.

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

9. The widened and spliced ​​roadbed structure according to claim 1, characterized in that: The outer surface of the upper end of the anti-seepage pavement layer is provided with a plurality of grooves, and the bottom surface of each group of the grooves is arranged to be inclined downward from the inside to the outside.

10. The widened and spliced ​​roadbed structure according to claim 9, characterized in that: The grooves are arranged at equal intervals, and one end of each groove is provided with a slope structure, and the slope smoothly transitions to the bottom of the groove.

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