Spliced pavement structure for capacity expansion reconstruction of expressway engineering

Abstract

This utility model relates to the field of road engineering technology, specifically to a splicing pavement structure for the expansion and reconstruction of a highway. It includes an old roadbed, a gravel drainage structure, and connecting components. Multiple steps are provided on the side of the old roadbed, and a new roadbed for expansion during use is provided on the upper surface of each step. Multiple gravel drainage structures are positioned between the old and new roadbeds, located at the end faces of the steps, with their bottom ends extending along the upper surface of the steps to the bottom end of the old roadbed. This utility model achieves a stable connection between the old and new roadbeds by embedding the gravel drainage structures onto the old roadbed, allowing the new roadbed to connect directly to the old roadbed on the steps. Connecting components are arranged on the upper surface of the steps to ensure this connection, enhancing the overall structural stability and durability, and ensuring the safety and reliability of the expanded pavement during use.

Description

Technical Field

[0001] This utility model relates to the field of road engineering technology, specifically to a splicing pavement structure for highway expansion and reconstruction projects. Background Technology

[0002] With the continuous increase in traffic volume on highways, the original highways are approaching saturation, requiring reconstruction and expansion projects to improve the full-load operation of the routes.

[0003] Chinese patent document CN222499875U discloses a spliced ​​pavement structure for the expansion and reconstruction of a highway, including an old road structure layer, a crushed stone roadbed, a new roadbed, drainage components, a drainage layer, a stress dispersion layer, a load-bearing layer, and a wear layer. The old road structure layer is provided with old road widening steps, and drainage components are provided on the old road steps. The crushed stone roadbed is laid on the side of the old road structure layer, the new roadbed is laid on the crushed stone roadbed, and the drainage layer is laid on the new roadbed.

[0004] However, in the above scheme, the drainage components and the new roadbed are connected to the old road steps in sequence. When in use, the drainage components are located between the new roadbed and the old road structure layer, which will make the connection stability between the new roadbed and the old road structure layer poor, and misalignment is likely to occur, causing the new roadbed and the old road structure layer to separate, affecting driving safety. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a splicing pavement structure for highway expansion and reconstruction projects.

[0006] The technical solution of this utility model is: a spliced ​​pavement structure for the expansion and reconstruction of a highway, including an old roadbed, a crushed stone drainage structure and connecting components;

[0007] The old roadbed has multiple steps on its side, and the upper surface of the steps is provided with a new roadbed for expanding the old roadbed when it is in use.

[0008] There are multiple gravel drainage structures. The gravel drainage structures are set between the old roadbed and the new roadbed and are located at the end face of the step. The bottom end of the gravel drainage structure extends along the upper end face of the step to the bottom end of the old roadbed.

[0009] The connecting components are installed on the upper surface of the steps, with both ends located on both sides of the gravel drainage structure and interlocked with the new roadbed. The connecting components are arranged one-to-one with the steps.

[0010] Preferably, the upper surfaces of multiple steps are provided with connecting grooves, and multiple connecting blocks are provided at the bottom of one end of the new roadbed. When the new roadbed and the old roadbed are installed together, the connecting blocks are accommodated in the connecting grooves.

[0011] Preferably, the connecting assembly includes a lead screw, a mounting plate, and bolts;

[0012] The mounting plate is positioned above the gravel drainage structure and extends to both sides of the gravel drainage structure at its ends;

[0013] The bolts are located at the ends of the mounting plate and extend through the mounting plate to the inside of the connecting groove to connect with the old roadbed.

[0014] The lead screw is installed on the top of the bolt and fitted into the new roadbed.

[0015] Preferably, a fixing groove is provided at one end of the old roadbed and inside the connecting groove, so that the bottom end of the bolt is accommodated in the fixing groove when the bolt is installed in conjunction with the old roadbed.

[0016] Preferably, a notch for connecting grooves is provided at one end of the old roadbed and at the upper end of the step, and the gravel drainage structure is installed in the notch.

[0017] Preferably, both ends of the mounting plate are provided with sleeves that fit over the outside of the bolts, and the two ends of the sleeves are respectively connected to the bottom inner side of the mounting plate and the connecting groove.

[0018] Preferably, a connecting plate is provided between the multiple mounting plates and at the end face of the step.

[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0020] This utility model integrates a crushed stone drainage structure onto the old roadbed, allowing the new roadbed to connect directly to the old roadbed on the steps. By arranging connecting components on the upper end face of the steps to integrate with the new roadbed, a stable connection between the old and new roadbeds is achieved, enhancing the stability and durability of the overall structure and ensuring the safety and reliability of the expanded road surface during use. Attached Figure Description

[0021] Figure 1 This is a perspective view of one embodiment of the present invention.

[0022] Figure 2-3 These are all exploded schematic diagrams of the connection structure between the old roadbed and the new roadbed in one embodiment of this utility model.

[0023] Figure 4 This is an exploded cross-sectional view of the connection structure between the old roadbed and the new roadbed in one embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the connection component structure in one embodiment of the present invention.

[0025] Attached reference numerals: 1. Old roadbed; 2. New roadbed; 3. Step; 4. Connecting groove; 5. Connecting block; 6. Connecting plate; 7. Screw rod; 8. Mounting plate; 9. Sleeve; 10. Bolt; 11. Notch; 12. Crushed stone drainage structure; 13. Fixing groove. Detailed Implementation

[0026] Example 1

[0027] like Figure 1-5 As shown, the present invention proposes a spliced ​​pavement structure for the expansion and reconstruction of a highway, including an old roadbed 1, a crushed stone drainage structure 12, and connecting components.

[0028] The side of the old roadbed 1 is provided with multiple steps 3, and the upper surface of the steps 3 is provided with a new roadbed 2 for expanding the old roadbed 1 in use.

[0029] There are multiple gravel drainage structures 12. The gravel drainage structures 12 are set between the old roadbed 1 and the new roadbed 2 and are located at the end face of the step 3. The bottom end of the gravel drainage structure 12 extends along the upper end face of the step 3 to the bottom end of the old roadbed 1, and is used to discharge rainwater during use.

[0030] The connecting components are installed on the upper surface of the step 3, and both ends are located on both sides of the gravel drainage structure 12 and are fitted and connected to the new roadbed 2. The connecting components are arranged one-to-one with the step 3, and are used to fit and connect with the old roadbed 1 and the new roadbed 2 respectively during use, so as to improve the stability of the connection between the old roadbed 1 and the new roadbed 2.

[0031] In an optional embodiment, a notch 11 is provided at one end of the old roadbed 1 and at the upper end face of the step 3. The gravel drainage structure 12 is installed in the notch 11 and is used to fit and connect the gravel drainage structure 12 to the old roadbed 1 through the notch 11 during use, so that the installation of the gravel drainage structure 12 is more convenient.

[0032] In this embodiment, a step 3 is set at one end of the old roadbed 1, and a notch 11 is set on the step 3, so that the gravel drainage structure 12 is fitted and installed on the old roadbed 1, and the new roadbed 2 is directly connected to the old roadbed 1 on the step 3, making the connection between the old roadbed 1 and the new roadbed 2 more stable. At the same time, by arranging connecting components on the upper end face of the step 3, the connecting components protect the gravel drainage structure 12 while realizing a stable connection between the old roadbed 1 and the new roadbed 2, enhancing the stability and durability of the overall structure, and ensuring the safety and reliability of the expanded road surface in use.

[0033] Example 2

[0034] like Figure 1-4As shown, the present invention proposes a splicing pavement structure for the expansion and reconstruction of a highway. Compared with the first embodiment, the difference in this embodiment is that the upper surface of multiple steps 3 is provided with connecting grooves 4, and multiple connecting blocks 5 are provided at the bottom of one end of the new roadbed 2. When the new roadbed 2 and the old roadbed 1 are installed together, the connecting blocks 5 are accommodated in the connecting grooves 4.

[0035] In this embodiment, by setting a connecting groove 4 on the upper surface of the step 3 and fitting the connecting block 5 into the inner side of the connecting groove 4, the connection stability between the new roadbed 2 and the old roadbed 1 is further improved, the road surface load is effectively distributed, the overall compressive strength of the splicing structure is enhanced, and the long-term safety of the highway after expansion is ensured.

[0036] Example 3

[0037] like Figure 4-5 As shown, the present invention proposes a splicing pavement structure for highway expansion and reconstruction projects. The difference between this embodiment and the first embodiment is that the connecting components include a lead screw 7, a mounting plate 8, and a bolt 10.

[0038] Mounting plate 8 is positioned above the gravel drainage structure 12 and extends to both sides of the gravel drainage structure 12 at its ends;

[0039] Bolt 10 is located at the end of mounting plate 8 and extends through mounting plate 8 to the inside of connecting groove 4 to connect with old roadbed 1. Bolt 10 is a chemical bolt, which makes it easier to connect bolt 10 to old roadbed 1.

[0040] The lead screw 7 is installed on the top of the bolt 10 and is fitted and connected to the new roadbed 2.

[0041] In an optional embodiment, a fixing groove 13 is provided at one end of the old roadbed 1 and inside the connecting groove 4. When the bolt 10 is installed in conjunction with the old roadbed 1, the bottom end of the bolt 10 is accommodated in the fixing groove 13, which is used to fix the bolt 10 in the fixing groove 13 during use, so that the bolt 10 is fixedly connected to the old roadbed 1.

[0042] In this embodiment, by placing the mounting plate 8 above the gravel drainage structure 12 and inserting the bottom end of the bolt 10 through the mounting plate 8 into the fixing groove 13, the bolt 10 is fixedly connected to the old roadbed 1, and the mounting plate 8 is fixed on the gravel drainage structure 12. The cooperation between the bolt 10 and the mounting plate 8 protects the gravel drainage structure 12. At the same time, the fastening effect generated by the engagement of the screw rod 7 with the new roadbed 2 allows the new roadbed 2 to be connected through the cooperation of the bolt 10 and the screw rod 7, improving the connection strength between the old roadbed 1 and the new roadbed 2, ensuring the stability and durability of the spliced ​​structure under complex road conditions, and improving the overall safety performance of the highway expansion project.

[0043] Example 4

[0044] like Figure 5 As shown, this utility model proposes a splicing pavement structure for highway expansion and reconstruction projects. Compared with Embodiment 1, the difference in this embodiment is that both ends of the mounting plate 8 are provided with sleeves 9 that are sleeved on the outside of the bolt 10. The two ends of the sleeves 9 are respectively connected to the inner bottom of the mounting plate 8 and the connecting groove 4, which are used to support the mounting plate 8 during use, to prevent the end of the mounting plate 8 from bending, and to improve the stability of the top of the bolt 10.

[0045] In an optional embodiment, a connecting plate 6 is provided between the multiple mounting plates 8 and at the end face of the step 3, which is used to connect the multiple mounting plates 8 into one body during use, so that the multiple bolts 10 are connected to each other through the cooperation of the mounting plates 8 and the connecting plate 6 to form a stable overall structure, effectively improving the collaborative bearing capacity of the spliced ​​pavement, further enhancing the safety and stability of the highway in long-term use, and ensuring the reliability and durability of the expansion project.

[0046] In this invention, a step 3 is provided at one end of the old roadbed 1, and a notch 11 is provided on the step 3, so that the gravel drainage structure 12 is fitted and installed on the old roadbed 1, and the new roadbed 2 is directly connected to the old roadbed 1 on the step 3, making the connection between the old roadbed 1 and the new roadbed 2 more stable. At the same time, the mounting plate 8 is placed above the gravel drainage structure 12, and the bottom end of the bolt 10 passes through the mounting plate 8 and the sleeve 9 and is inserted into the fixing groove 13, so that the bolt 10 is fixedly connected to the old roadbed 1, and the mounting plate 8 is fixed on the gravel drainage structure 12. The cooperation between the bolt 10 and the mounting plate 8 protects the gravel drainage structure 12. At the same time, the fastening effect generated by the screw rod 7 and the new roadbed 2 is achieved by the cooperation between the bolt 10 and the screw rod 7, which improves the connection strength between the old roadbed 1 and the new roadbed 2, enhances the stability and durability of the overall structure, and ensures the safety and reliability of the expanded road surface in use.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A spliced ​​pavement structure for highway expansion and reconstruction projects, characterized in that, Includes the old roadbed (1), the gravel drainage structure (12), and the connecting components; The side of the old roadbed (1) is provided with multiple steps (3), and the upper surface of the steps (3) is provided with a new roadbed (2) for expanding the old roadbed (1) in use. There are multiple gravel drainage structures (12). The gravel drainage structure (12) is set between the old roadbed (1) and the new roadbed (2) and is located at the end face of the step (3). The bottom end of the gravel drainage structure (12) extends along the upper end face of the step (3) to the bottom end of the old roadbed (1). The connecting components are installed on the upper surface of the step (3), and both ends are located on both sides of the gravel drainage structure (12) and are fitted and connected to the new roadbed (2). The connecting components are arranged one-to-one with the step (3).

2. The spliced ​​pavement structure for highway expansion and reconstruction projects according to claim 1, characterized in that, Multiple steps (3) are provided with connecting grooves (4) on their upper surfaces. Multiple connecting blocks (5) are provided at the bottom of one end of the new roadbed (2). When the new roadbed (2) and the old roadbed (1) are installed together, the connecting blocks (5) are accommodated in the connecting grooves (4).

3. The spliced ​​pavement structure for highway expansion and reconstruction projects according to claim 2, characterized in that, The connecting assembly includes a lead screw (7), a mounting plate (8), and bolts (10); The mounting plate (8) is positioned above the gravel drainage structure (12) and extends to both sides of the gravel drainage structure (12); Bolt (10) is set at the end of the mounting plate (8) and its bottom end extends through the mounting plate (8) to the inside of the connecting groove (4) to connect with the old roadbed (1); The lead screw (7) is installed on the top of the bolt (10) and is fitted into the new roadbed (2).

4. The spliced ​​pavement structure for highway expansion and reconstruction projects according to claim 3, characterized in that, A fixing groove (13) is provided at one end of the old roadbed (1) and inside the connecting groove (4). When the bolt (10) is installed in conjunction with the old roadbed (1), the bottom end of the bolt (10) is accommodated in the fixing groove (13).

5. The spliced ​​pavement structure for highway expansion and reconstruction projects according to claim 2, characterized in that, A notch (11) for connecting groove (4) is provided at one end of the old roadbed (1) and at the upper end face of the step (3), and a gravel drainage structure (12) is installed in the notch (11).

6. The spliced ​​pavement structure for highway expansion and reconstruction projects according to claim 3, characterized in that, Both ends of the mounting plate (8) are provided with sleeves (9) that are fitted onto the outside of the bolts (10). The two ends of the sleeves (9) are connected to the bottom inner sides of the mounting plate (8) and the connecting groove (4), respectively.

7. The spliced ​​pavement structure for highway expansion and reconstruction projects according to claim 3, characterized in that, A connecting plate (6) is provided between multiple mounting plates (8) and at the end face of the step (3).

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