Road structure with high bearing capacity

Abstract

The utility model provides a road structure with high bearing capacity, and belongs to the technical field of road expansion joints. The device comprises an expansion joint arranged at the joint of two sections of roadbeds, a damping belt is arranged on the upper side of the expansion joint, deformable supporting plate structures are oppositely arranged on the side walls of the two sides of the expansion joint, and an elastic supporting assembly is arranged between the two deformable supporting plate structures. The deformable supporting plate structures arranged on the two sides of the expansion joint are formed by connecting multiple sets of supporting plate pieces and supporting plates through rotating connecting structures, compared with a traditional steel plate, adaptive deformation can be generated under the complex working condition, when thermal expansion and cold contraction are caused by temperature changes or dynamic loads are generated during vehicle running, stress can be effectively dispersed through self deformation, and the expansion joint deformation is reduced. The stress is prevented from being concentrated on a certain part of the supporting plate, so that the supporting plate is prevented from being deformed and damaged due to excessive stress, the service life of the supporting plate is remarkably prolonged, and the normal function of the expansion joint and the stability of a road structure are powerfully guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of road expansion joint technology and relates to a road structure with high load-bearing capacity. Background Technology

[0002] In the field of road engineering, the combined effects of changes in the natural environment and vehicle loads pose significant challenges to the stability of road structures. Due to the thermal expansion and contraction characteristics of concrete, and the shrinkage deformation that occurs during the setting and hardening process, if not effectively controlled, roads are highly susceptible to structural damage such as cracking and bulging due to temperature stress and shrinkage stress, seriously affecting the service life of roads and driving safety. To alleviate these problems, the technical solution of setting expansion joints in road structures is commonly used in engineering practice. By reserving deformation space, stress is released, ensuring the integrity of the road structure and the smoothness of vehicle driving.

[0003] Currently, steel plate structures are commonly used as internal support systems in the design of expansion joints. This structure can enhance the load-bearing capacity and deformation resistance of expansion joints to a certain extent. However, in actual use, it has been found that due to frequent fluctuations in ambient temperature and the continuous action of vehicle dynamic loads, the steel plates inside the expansion joint are under repeated stress for a long time, making them prone to plastic deformation and fatigue failure. Once the steel plates suffer structural damage, it will directly weaken the support performance of the expansion joint, leading to its failure and causing damage to the road pavement, vehicle bounce, and other defects. This technical defect makes the actual service life of the expansion joint far lower than the design expectation, which not only increases road maintenance costs but also adversely affects road traffic efficiency and safety, and urgently needs to be addressed through technical improvements.

[0004] For example, a Chinese patent discloses a repairable and replaceable expansion joint [application number: 202320910012.2], which includes a box connecting plate located at the bottom, a box connecting plate connected to a box top plate through an outer box plate, the box connecting plate, the outer box plate, and the box top plate forming a box structure, an inner box plate one inside the box structure, an inner box plate two assembled on one side of the inner box plate, and a steel pipe inside the box structure. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a road structure with high load-bearing capacity.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A road structure with high load-bearing capacity includes an expansion joint installed at the junction of two roadbed sections. A shock-absorbing strip is installed on the upper side of the expansion joint. Deformable support plate structures are installed opposite each other on the two side walls of the expansion joint. An elastic support component is installed between two deformable support plate structures. The deformable support plate structure includes three sets of support plates distributed in the vertical direction. Each set of support plates is formed by combining several horizontally arranged support plates. Corresponding support plates in two adjacent sets of support plates and adjacent support plates in the same set of support plates are connected by at least two rotating connection structures.

[0008] In the aforementioned road structure with high load-bearing capacity, the rotating connection structure includes two No. 1 rolling ball heads respectively embedded in two adjacent support plates, and the two No. 1 rolling ball heads are fixed together by a connecting rod.

[0009] In the aforementioned road structure with high load-bearing capacity, the outer end of the first rolling ball head is provided with a flat portion, which is recessed inward and has a threaded groove. Both ends of the connecting rod are provided with screw portions that are screwed into the threaded groove.

[0010] In the aforementioned road structure with high load-bearing capacity, the elastic support component includes support seats with the same number of support plates as the deformable support plate structure. The support seats are suspended between two oppositely arranged support plates. A rotatable elastic support structure is provided between the support seats and the support plates. Two adjacent support seats in the horizontal and vertical directions are connected by a first spring.

[0011] In the aforementioned road structure with high load-bearing capacity, the rotatable elastic support structure includes a limiting rod. One end of the limiting rod horizontally passes through the support seat and is slidably connected to the support seat. The other end of the limiting rod is fixedly connected to a second rolling ball head, which is rotatably embedded in the support plate. A second spring is also sleeved on the limiting rod.

[0012] In the aforementioned road structure with high load-bearing capacity, the second rolling ball head is also provided with a flat part with a threaded groove, and a threaded post protruding from the limiting rod is inserted into and threadedly connected to the threaded groove.

[0013] In the aforementioned road structure with high load-bearing capacity, the rotatable elastic support structure has four sets of supports between the support base and the support plate.

[0014] In the aforementioned road structure with high load-bearing capacity, two first springs are provided between two adjacent support seats in the vertical direction.

[0015] In the aforementioned road structure with high load-bearing capacity, a strong connection structure is also provided between the support plate and the roadbed.

[0016] In the aforementioned road structure with high load-bearing capacity, the strong connection structure includes several reinforcing ribs fixed to the support plate, and the reinforcing ribs are horizontally arranged and embedded in the roadbed.

[0017] Compared with existing technologies, the advantages of this utility model are as follows: The deformable support plate structure set on both sides of the expansion joint consists of multiple sets of support plates and the support plates are connected by a rotating connection structure. Compared with traditional steel plates, it can produce adaptive deformation under complex working conditions. When temperature changes cause thermal expansion and contraction or vehicle traffic generates dynamic loads, it can effectively disperse stress through its own deformation, avoid stress concentration on a certain part of the support plate, and thus prevent the support plate from deforming and being damaged due to excessive force. This significantly extends the service life of the support plate and effectively ensures the normal function of the expansion joint and the stability of the road structure.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention;

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] In the diagram, 1 is the roadbed, 2 is the expansion joint, 3 is the shock absorber, 4 is the deformable support plate structure, 5 is the elastic support assembly, 6 is the support plate, 7 is the support plate, 8 is the rotating connection structure, 9 is the first rolling ball head, 10 is the connecting rod, 11 is the screw rod, 12 is the support seat, 13 is the first spring, 14 is the limiting rod, 15 is the second rolling ball head, 16 is the second spring, 17 is the screwed post, and 18 is the reinforcing rib. Detailed Implementation

[0022] like Figure 1 and Figure 2 As shown, a road structure with high load-bearing capacity includes an expansion joint 2 located at the connection of two roadbed sections 1. A shock-absorbing strip 3 is provided on the upper side of the expansion joint 2. Deformable support plate structures 4 are provided opposite to each other on the two side walls of the expansion joint 2. An elastic support component 5 is provided between two deformable support plate structures 4. The deformable support plate structure 4 includes three sets of support plates 6 distributed in the vertical direction. Each set of support plates 6 is formed by combining several horizontally arranged support plates 7. The corresponding two support plates 7 in two adjacent sets of support plates 6 and the two adjacent support plates 7 in the same set of support plates 6 are connected by at least two rotating connection structures 8.

[0023] In this invention, the deformable support plate structure 4 set on both sides of the expansion joint 2 consists of multiple sets of support plates 6 and support plates 7 connected by a rotating connection structure 8. Compared with traditional steel plates, it can produce adaptive deformation under complex working conditions. When temperature changes cause thermal expansion and contraction or vehicle travel generates dynamic loads, it can effectively disperse stress through its own deformation, avoid stress concentration on a certain part of the support plate, and thus prevent the support plate from deforming and being damaged due to excessive force. This significantly extends the service life of the support plate and effectively ensures the normal function of the expansion joint and the stability of the road structure.

[0024] Specifically, the rotating connection structure 8 includes two primary rolling ball heads 9 respectively embedded in two adjacent support plates 7, and the two primary rolling ball heads 9 are fixed together by a connecting rod 10. This structure ensures a rotatable connection between the support plates, allowing the support plate structure to smoothly undergo adaptive deformation. Furthermore, when a support plate 7 is partially damaged, only the connecting rod 10 needs to be removed to separate the damaged support plate from the adjacent support plate, allowing for independent replacement of the damaged area without replacing the entire support plate structure. This not only reduces maintenance costs but also shortens maintenance time due to the simple and easy-to-operate connection structure. Simultaneously, it further enhances the adaptability of the support plate structure in complex environments, which is beneficial for maintaining the service life of the support plates.

[0025] Specifically, the outer end of the first rolling ball head 9 is provided with a flat portion, which has an inwardly recessed threaded groove. The connecting rod 10 has protruding threaded portions 11 at both ends that are screwed into the threaded groove. When it is necessary to replace a damaged part, connecting the two first rolling ball heads by screwing them together allows for easy disassembly and installation, facilitating independent replacement of the damaged part and reducing maintenance costs.

[0026] Specifically, the elastic support assembly 5 includes support seats 12 in the same number as the support plates 7 within the deformable support plate structure 4. Each support seat 12 is suspended between two opposing support plates 7. A rotatable elastic support structure is provided between the support seats 12 and the support plates 7. Two adjacent support seats 12 in the horizontal and vertical directions are connected by a first spring 13. This structure, on the one hand, can buffer stress transmitted to the support plates 7 through the elastic deformation of the elastic support structure and the first spring 13 when the vehicle experiences vibrations and impacts, further reducing stress transmission to the support plates 7. This helps the deformable support plate structure 4 maintain good stress dispersion and extends the service life of the support plates. On the other hand, when a support seat 12 or related elastic support structure component is damaged, only the damaged component can be replaced independently without affecting the normal operation of other components and the entire structure, resulting in low maintenance costs.

[0027] Specifically, the rotatable elastic support structure includes a limiting rod 14. One end of the limiting rod 14 horizontally passes through the support base 12 and is slidably connected to the support base 12. The other end of the limiting rod 14 is fixedly connected to a second rolling ball head 15. The second rolling ball head 15 is rotatably embedded in the support plate 7. A second spring 16 is also sleeved on the limiting rod 14. The second rolling ball head 15 is also provided with a flat part with a threaded groove. A threaded post 17 protrudes from the limiting rod 14, is inserted into the threaded groove and screwed into the threaded groove.

[0028] The above structure enables a rotatable connection between the support base 12 and the support plate 7. The second spring 16 provides additional elastic cushioning under vehicle load. It works in conjunction with the overall deformable support plate structure 4 to more effectively disperse stress and maintain the service life of the support plate. Moreover, when a certain rotatable elastic support structure is damaged, since the connections of each component are relatively independent, the damaged part can be replaced independently, reducing maintenance costs.

[0029] Preferably, four sets of rotatable elastic support structures are provided between the support base 12 and the support plate 7, which can more evenly distribute the stress between the support base 12 and the support plate 7, making the synergistic effect of the elastic support assembly 5 and the deformable support plate structure 4 better, further improving the stress dispersion capability of the entire structure, thereby better maintaining the service life of the support plate. In addition, since each set of rotatable elastic support structures is relatively independent, when a certain set is damaged, it can be replaced independently without affecting the normal operation of other sets, thus reducing maintenance costs.

[0030] Preferably, there are two first springs 13 between two adjacent support seats 12 in the vertical direction, which increases the elastic buffering capacity of the elastic support assembly 5 in the vertical direction. During vehicle operation, it can more effectively absorb and disperse the impact force in the vertical direction, and work with the deformable support plate structure 4 to better disperse stress, which helps to maintain the service life of the support plate. Moreover, if one of the first springs 13 is damaged, it can be replaced individually, realizing independent replacement of the damaged part and reducing maintenance costs.

[0031] Preferably, a strong connection structure is further provided between the support plate 7 and the roadbed 1. The strong connection structure includes several reinforcing ribs 18 fixed on the support plate 7. The reinforcing ribs 18 are horizontally arranged and embedded in the roadbed 1. The above structure can enhance the connection strength between the support plate 7 and the roadbed 1.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0033] Although this article frequently uses terms such as roadbed 1, expansion joint 2, shock absorber 3, deformable support plate structure 4, elastic support assembly 5, support plate 6, support plate 7, rotating connection structure 8, first rolling ball head 9, connecting rod 10, screw part 11, support seat 12, first spring 13, limiting rod 14, second rolling ball head 15, second spring 16, screwed post 17, reinforcing rib 18, etc., these terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would be contrary to the spirit of this utility model.

Claims

1. A road structure with high load-bearing capacity, comprising an expansion joint (2) disposed at the connection between two roadbed sections (1), wherein a shock-absorbing strip (3) is disposed on the upper side of the expansion joint (2), characterized in that, The expansion joint (2) has deformable support plate structures (4) arranged opposite each other on its two side walls. An elastic support component (5) is arranged between the two deformable support plate structures (4). The deformable support plate structure (4) includes three sets of support plates (6) distributed in the vertical direction. Each set of support plates (6) is formed by combining several horizontally arranged support plates (7). The two corresponding support plates (7) in two adjacent sets of support plates (6) and the two adjacent support plates (7) in the same set of support plates (6) are connected by at least two rotating connection structures (8).

2. A road structure with high load-bearing capacity according to claim 1, characterized in that, The rotating connection structure (8) includes two No. 1 rolling ball heads (9) respectively embedded in two adjacent support plates (7), and the two No. 1 rolling ball heads (9) are fixed together by a connecting rod (10).

3. A road structure with high load-bearing capacity according to claim 2, characterized in that, The outer end of the first rolling ball head (9) is provided with a flat part, and the flat part is recessed inward and provided with a threaded groove. The two ends of the connecting rod (10) are provided with screw parts (11) that are screwed into the threaded groove.

4. A road structure with high load-bearing capacity according to claim 1, characterized in that, The elastic support assembly (5) includes a number of support seats (12) equal to the number of support plates (7) in the deformable support plate structure (4). The support seats (12) are suspended between two support plates (7) that are arranged opposite each other. A rotatable elastic support structure is provided between the support seats (12) and the support plates (7). Two adjacent support seats (12) in the horizontal and vertical directions are connected by a first spring (13).

5. A road structure with high load-bearing capacity according to claim 4, characterized in that, The rotatable elastic support structure includes a limiting rod (14), one end of which horizontally passes through the support base (12) and is slidably connected to the support base (12). The other end of the limiting rod (14) is fixedly connected to a second rolling ball head (15), which is rotatably embedded in the support plate (7). A second spring (16) is also sleeved on the limiting rod (14).

6. A road structure with high load-bearing capacity according to claim 5, characterized in that, The second rolling ball head (15) is also provided with a flat part with a threaded groove, and the limiting rod (14) is provided with a threaded post (17) that is inserted into the threaded groove and screwed to the threaded groove.

7. A road structure with high load-bearing capacity according to claim 4, characterized in that, The rotatable elastic support structure has four sets of supports between the support base (12) and the support plate (7).

8. A road structure with high load-bearing capacity according to claim 4, characterized in that, There are two first springs (13) between two adjacent support seats (12) in the vertical direction.

9. A road structure with high load-bearing capacity according to claim 1, characterized in that, A strong connection structure is also provided between the support plate (7) and the roadbed (1).

10. A road structure with high load-bearing capacity according to claim 9, characterized in that, The strong connection structure includes several reinforcing ribs (18) fixed on the support plate (7), and the reinforcing ribs (18) are horizontally arranged and embedded in the roadbed (1).

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