Roadbed and pavement splicing structure for roadbed engineering

Abstract

The utility model relates to the technical field of subgrade engineering, in particular to a subgrade pavement splicing structure of subgrade engineering, which comprises an old subgrade and a new subgrade which are spliced and connected, the new subgrade is spliced and paved on the right side of the old subgrade, a right-angle stepped groove is arranged at the splicing end of the old subgrade, and a horizontal groove is longitudinally arranged on each vertical surface of the right-angle stepped groove. Horizontal connecting pieces are fixedly arranged in the horizontal grooves, a vertical groove is longitudinally formed in each horizontal plane of the right-angle stepped groove, a plurality of sets of circular sinking grooves with the depth larger than that of the vertical grooves are evenly formed in the vertical grooves, and vertical connecting pieces are arranged in the circular sinking grooves. Through the synergistic effect of the horizontal connecting pieces and the vertical connecting pieces, the new roadbed and the old roadbed can be connected in the horizontal direction and the vertical direction at the same time, the contact area and the friction force at the splicing position are increased, the connecting stability between the new roadbed and the old roadbed is effectively enhanced, the risk of longitudinal cracking is reduced, and the service life of the roadbed is prolonged. The overall structural safety and the service life of the road are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roadbed engineering, and particularly relates to a roadbed pavement splicing structure of roadbed engineering. BACKGROUND

[0002] Roadbed engineering refers to the process of excavating, filling, tamping and other work on the ground in road construction to ensure the stability and safety of the road. Roadbed is an important part of the road and the foundation of the pavement, bearing the vehicle load from the pavement and the weight of the rock and soil itself.

[0003] In the maintenance and expansion of roadbed engineering, the splicing of new and old roadbed pavements is a common and critical technical challenge. In the prior art, when splicing the roadbed pavement, a step is usually opened at the splicing end of the old roadbed to increase the contact area and friction, thereby improving the bonding strength between the new and old roadbeds. However, despite these measures, longitudinal cracking may still occur at the splicing site due to the long-term effect of vehicle load, causing the new and old pavements to separate and affecting the overall structural safety and service life of the road. In view of this, the present application proposes a roadbed pavement splicing structure of roadbed engineering. SUMMARY

[0004] To address the existing deficiencies, the utility model provides a roadbed pavement splicing structure of roadbed engineering, which solves the problems raised in the background art. The structure significantly enhances the connection strength between the new and old pavements, effectively prevents longitudinal cracking, and prolongs the service life of the spliced pavement.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows:

[0006] A roadbed pavement splicing structure of roadbed engineering, comprising an old roadbed and a new roadbed spliced and connected, the new roadbed being spliced and laid on the right side of the old roadbed, a right-angle stepped groove being opened at the splicing end of the old roadbed, a horizontal groove being longitudinally opened on each vertical surface of the right-angle stepped groove, a horizontal connecting piece being fixed inside the horizontal groove, a vertical groove being longitudinally opened on each horizontal surface of the right-angle stepped groove, a plurality of groups of circular sink grooves with a depth greater than that of the vertical groove being uniformly opened inside the vertical groove, and a vertical connecting piece being arranged inside the circular sink groove.

[0007] Further, the horizontal connecting piece comprises a mesh frame plate and a fixing block, a plurality of groups of fixing blocks adapted to the horizontal groove are uniformly fixed at the left end of the mesh frame plate, and the fixing blocks are clamped into the horizontal groove.

[0008] Further, the mesh frame plate is a mesh structure made of a plurality of groups of steel plates of the same specification.

[0009] Further, the adjacent two groups of the net frame plates are connected through multiple groups of pull bars.

[0010] Further, the horizontal length of the net frame plate is greater than twice the length of the horizontal segment of the right-angle stepped groove.

[0011] Further, the vertical connecting piece is composed of an anchor plate, an anchor rod and an anchor head, the lower end of the anchor rod is fixedly provided with the anchor head, the anchor head is inserted into the circular sink, the upper end of the anchor rod is fixedly provided with the anchor plate, and the anchor plate is located on the lower side of the net frame plate and is in abutting connection with the net frame plate.

[0012] Further, multiple groups of longitudinal grooves perpendicular to the vertical grooves are formed on the horizontal plane of the right-angle stepped groove, and the longitudinal grooves are in communication with the vertical grooves and staggered at the position of the circular sink.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1、The horizontal connecting piece and the vertical connecting piece cooperate, can connect the new and old roadbeds from the horizontal direction and the vertical direction at the same time, increase the contact area and the friction force of the splicing part, effectively enhance the connection stability between the new and old roadbeds, reduce the risk of longitudinal cracking, and improve the overall structural safety and service life of the road.

[0015] 2、The horizontal connecting piece includes the net frame plate and the fixed block, multiple groups of fixed blocks matched with the horizontal grooves are uniformly and fixedly arranged at the left end of the net frame plate, the fixed block is clamped into the horizontal groove, the new roadbed is connected from the horizontal direction through the net frame plate, the contact area and the friction force of the splicing part are increased, the structural strength and the stability of the splicing part are improved, the net frame plate can be firmly clamped into the horizontal groove through the design of the fixed block, stable connection is formed, the installation process is simplified, and the construction efficiency is improved.

[0016] 3、The adjacent two groups of net frame plates are connected through multiple groups of pull bars, the pull bar connection firmly connects the adjacent two groups of net frame plates together to form an integral structure, can effectively resist the action of external loads such as vehicle load and foundation settlement, prevent relative displacement or deformation between the net frame plates, the splicing structure between the new and old roadbeds is more compact and firm through the pull bar connection, not only the structural safety of the road is improved, but also the service life of the road is prolonged.

[0017] 4、The horizontal length of the net frame plate is more than twice the length of the horizontal section of the right-angle stepped groove, the horizontal length of the net frame plate is relatively long, can cover a larger range of the horizontal section of the right-angle stepped groove, thereby providing more extensive connection support, and helps to ensure that the connection between the new and old roadbeds is more stable and uniform.

[0018] 5、The vertical connecting piece can realize stable connection in the vertical direction of the new and old roadbeds, helps to resist the influence of foundation settlement difference and material property change, and maintains the close connection of the new and old roadbeds in the vertical direction. Meanwhile, the anchor rod, as a bearing part, can efficiently transmit the load from the splicing position of the new and old roadbeds to a deeper foundation, helps to reduce stress concentration at the splicing position, and improves the overall bearing capacity of the road.

[0019] 6、The horizontal plane of the right-angle stepped groove is provided with a plurality of longitudinal grooves perpendicular to the vertical grooves, the longitudinal grooves are communicated with the vertical grooves and staggered at the circular sinking groove position, the groove network is formed on the horizontal plane of the right-angle stepped groove through the mutual connection of the longitudinal grooves and the vertical grooves, the contact area between the new and old roadbeds can be increased, the stability of the splicing position can be strengthened, and the bearing capacity of the splicing position can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Fig. 2 It is a front view of the old roadbed in the utility model.

[0022] Fig. 3 It is a schematic diagram of the local structure of the utility model.

[0023] Fig. 4 It is a schematic diagram of the local structure of the utility model.

[0024] Fig. 5 It is a schematic diagram of the structure of the horizontal connecting piece in the utility model.

[0025] Fig. 6 It is a schematic diagram of the structure of the vertical connecting piece in the utility model.

[0026] In the drawing: 1, old roadbed; 2, new roadbed; 3, horizontal connecting piece; 31, net frame plate; 32, fixed block; 4, vertical connecting piece; 41, anchor plate; 42, anchor rod; 43, anchor head; 5, tie bar; 6, right-angle stepped groove; 7, horizontal groove; 8, vertical groove; 9, circular sinking groove; 10, longitudinal groove. DETAILED DESCRIPTION

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] Example:

[0029] like Figs. 1 to 6 As shown, a roadbed and pavement splicing structure for roadbed engineering includes an old roadbed 1 and a new roadbed 2 spliced ​​together. The new roadbed 2 is spliced ​​and laid on the right side of the old roadbed 1 to form a continuous pavement. A right-angle stepped groove 6 is provided at the splicing end of the old roadbed 1 to increase the contact area at the splicing point between the old roadbed 1 and the new roadbed 2. Each vertical surface of the right-angle stepped groove 6 has a longitudinally formed horizontal groove 7 for installing a horizontal connector 3. The horizontal connector 3 is fixed inside the horizontal groove 7 for connecting the horizontal part of the new roadbed 2. Each horizontal surface of the right-angle stepped groove 6 has a longitudinally formed horizontal groove 7 for installing a horizontal connector 3. A vertical groove 8 is provided, and multiple sets of circular sinkers 9 with a depth greater than the depth of the vertical groove 8 are evenly opened inside the vertical groove 8 for installing vertical connectors 4. The vertical connectors 4 are provided inside the circular sinkers 9. The vertical connectors 4 help resist the effects of different foundation settlement and changes in material properties, and maintain a tight connection between the new and old roadbeds in the vertical direction. This design solves the problem that longitudinal cracking occurs at the splice of the existing new and old roadbeds due to the long-term action of vehicle loads, which leads to the separation of the new and old pavements and affects the overall structural safety and service life of the road.

[0030] In this embodiment, the horizontal connector 3 includes a wire mesh plate 31 and fixing blocks 32. Multiple sets of fixing blocks 32, adapted to the horizontal groove 7, are evenly fixed to the left end of the wire mesh plate 31. The fixing blocks 32 are inserted into the horizontal groove 7. The wire mesh plate 31 allows for horizontal connection of the new roadbed 2, increasing the contact area and friction at the joint, and improving the structural strength and stability of the joint. The design of the fixing blocks 32 ensures that the wire mesh plate 31 can be firmly inserted into the horizontal groove 7, forming a stable connection. This also simplifies the installation process and improves construction efficiency. The wire mesh plate 31, through the fixing blocks 32, is inserted into the horizontal groove 7, achieving a stable horizontal connection between the old and new roadbeds. The strength and rigidity of the wire mesh plate 31 further enhance the stability of the connection, enabling the road to withstand long-term vehicle loads.

[0031] In this embodiment, the net frame plate 31 is a net structure made of multiple groups of steel plates of the same specification welded together. This design makes the net frame plate 31 have high structural strength and toughness, able to withstand long-term vehicle load without deformation or damage. The net structure design reduces the overall weight of the net frame plate 31, reduces the requirements on the foundation, facilitates construction and transportation, and increases the contact area and friction of the spliced parts, improving the structural strength and stability of the spliced parts.

[0032] In this embodiment, the net frame plate 31 is a net structure made of multiple groups of steel plates of the same specification welded together. This design makes the net frame plate 31 have high structural strength and toughness, able to withstand long-term vehicle load without deformation or damage. The net structure design reduces the overall weight of the net frame plate 31, reduces the requirements on the foundation, facilitates construction and transportation, and increases the contact area and friction of the spliced parts, improving the structural strength and stability of the spliced parts.

[0033] In this embodiment, the horizontal length of the net frame plate 31 is greater than twice the length of the horizontal section of the right-angle stepped groove 6, and the horizontal length of the net frame plate 31 is longer, which can cover a larger range of the horizontal section of the right-angle stepped groove 6, thereby providing more extensive connection support, which helps to ensure that the connection between the new and old roadbeds is more stable and uniform.

[0034] In this embodiment, the vertical connecting piece 4 is composed of an anchor plate 41, an anchor rod 42 and an anchor head 43. The lower end of the anchor rod 42 is fixedly provided with the anchor head 43, which is inserted into the circular sink 9. The upper end of the anchor rod 42 is fixedly provided with the anchor plate 41, which is located on the lower side of the net frame plate 31 and is in contact with it. The vertical connecting piece 4 can realize stable connection in the vertical direction of the new and old roadbeds, which helps to resist the influence of foundation settlement difference and material property change, and maintain the close connection of the new and old roadbeds in the vertical direction. At the same time, as the bearing part, the anchor rod 42 can efficiently transmit the load from the spliced part of the new and old roadbeds to the deeper foundation, which helps to reduce the stress concentration at the spliced part and improve the overall bearing capacity of the road.

[0035] In this embodiment, a plurality of longitudinal grooves 10 perpendicular to the vertical grooves 8 are formed on the horizontal plane of the right-angle stepped groove 6, and the longitudinal grooves 10 are in communication with the vertical grooves 8 and staggered with the circular sink 9. Through the mutual connection of the longitudinal grooves 10 and the vertical grooves 8, a groove network is formed on the horizontal plane of the right-angle stepped groove, which can increase the contact area between the new and old roadbeds, strengthen the stability of the spliced part, and improve the bearing capacity of the spliced part.

[0036] The working principle of the roadbed pavement splicing structure of the roadbed engineering is:

[0037] The splicing end of the old roadbed 1 is processed to form a right-angle stepped groove 6, and horizontal grooves 7, vertical grooves 8 and circular sunk grooves 9 are formed on the right-angle stepped groove 6. The horizontal connecting member 3 net frame plate 31 and the fixed block 32 and the vertical connecting member 4 anchor plate 41, anchor rod 42 and anchor head 43 are prepared. The anchor head 43 at the lower end of the anchor rod 42 is inserted into the circular sunk groove 9, the anchor head 43 is ensured to be firmly fixed in the sunk groove, and the vertical grooves 8 and the circular sunk grooves 9 are filled with the filler of the new roadbed 2. Then the fixed block 32 of the net frame plate 31 is clamped into the horizontal groove 7, the net frame plate 31 is ensured to be placed on the anchor plate 41 and kept in a horizontal state, and the horizontal groove 7 is filled with the filler of the new roadbed 2. The adjacent two groups of net frame plates 31 are firmly connected together by using the reinforcing bar 5 to form an integral structure. The new roadbed 2 is laid along the right-angle stepped groove 6 and spliced with the old roadbed 1, and the new and old roadbeds are ensured to form a continuous pavement.

[0038] In summary, the roadbed pavement splicing structure of the roadbed engineering realizes the stable connection of the new and old roadbeds in the horizontal and vertical directions through the design of the horizontal connecting member 3, the vertical connecting member 4 and the groove network, improves the structural strength and stability of the splicing part, solves the longitudinal cracking problem of the new and old roadbed pavement splicing part caused by the long-term action of vehicle load, prolongs the service life of the road and improves the overall structural safety of the road.

[0039] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the utility model embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments cannot be exhausted here, and all the embodiments belong to the protection scope of the utility model.

Claims

1. A subgrade pavement splicing structure of subgrade engineering, comprising a splicing connection of an old subgrade (1) and a new subgrade (2), the new subgrade (2) is spliced and laid on the right side of the old subgrade (1), characterized in that: The old roadbed (1) is provided with a right-angle stepped groove (6) at the splicing end, a horizontal groove (7) is longitudinally arranged on each vertical surface of the right-angle stepped groove (6), a horizontal connecting piece (3) is fixedly arranged in the horizontal groove (7), a vertical groove (8) is longitudinally arranged on each horizontal surface of the right-angle stepped groove (6), a plurality of groups of circular sunken grooves (9) with a depth greater than that of the vertical groove (8) are uniformly arranged in the vertical groove (8), and a vertical connecting piece (4) is arranged in the circular sunken groove (9).

2. The subbase pavement splicing structure of subgrade engineering according to claim 1, characterized by: The horizontal connecting piece (3) comprises a net frame plate (31) and a fixing block (32), a plurality of groups of fixing blocks (32) matched with the horizontal groove (7) are uniformly fixed on the left end of the net frame plate (31), and the fixing blocks (32) are clamped into the horizontal groove (7).

3. The subbase pavement splicing structure of subgrade engineering according to claim 2, characterized by: The net frame plate (31) is a net structure made by welding a plurality of groups of steel plates with the same specification.

4. The subbase pavement splicing structure of subgrade engineering according to claim 3, characterized by: A plurality of groups of tie bars (5) are arranged between adjacent two groups of the net frame plate (31).

5. The subbase pavement splicing structure of subgrade engineering according to claim 4, characterized by: The horizontal length of the net frame plate (31) is greater than twice the length of the horizontal section of the right-angle stepped groove (6).

6. The subbase pavement splicing structure of subbase engineering according to claim 5, characterized by: The vertical connecting piece (4) is composed of an anchor plate (41), an anchor rod (42) and an anchor head (43), the anchor head (43) is fixedly arranged at the lower end of the anchor rod (42) and inserted into the circular sunken groove (9), the anchor plate (41) is fixedly arranged at the upper end of the anchor rod (42) and located below and in contact with the net frame plate (31).

7. The subbase pavement splicing structure of subbase engineering according to claim 1, characterized by: A plurality of groups of longitudinal grooves (10) perpendicular to the vertical groove (8) are arranged on the horizontal surface of the right-angle stepped groove (6), the longitudinal groove (10) is in communication with the vertical groove (8) and staggered with the circular sunken groove (9).

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