Roadbed structure

Abstract

The present invention discloses a roadbed structure, which relates to the technical field of roadbeds, and the roadbed structure comprises: a roadbed having a corresponding upper surface and a lower surface; an anti-seismic mechanism, comprising a first steel bar layer, a second steel bar layer located below the first steel bar layer, and a first support member, wherein the first steel bar layer and the second steel bar layer are arranged inside the roadbed, the first support member has an arc-shaped cross section in the vertical direction, the first support member is arranged between the first steel bar layer and the second steel bar layer, the two ends of the first support member face the lower surface of the roadbed, and the outer arc surface of the first support member faces the upper surface of the roadbed. The present application can improve the anti-seismic performance of the roadbed.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed, and in particular to a roadbed structure. Background Art

[0002] The roadbed is a strip structure built as the foundation of the road surface according to the route location and certain technical requirements. It is the foundation of railways and highways. The roadbed is generally a linear structure built with soil or stone. As the country vigorously develops infrastructure projects, more and more roadbed structures with crack resistance and earthquake resistance are needed to meet people's daily use needs.

[0003] At present, most of the roadbeds with crack resistance and earthquake resistance are directly cast with cement and crushed stone, but the earthquake resistance and crack resistance of this structure are not good enough, the overall toughness of the structure is poor, the roadbed is prone to cracks when it is vibrated, the stress resistance is not good enough, and the roadbed is prone to cracks during daily use. Therefore, a new roadbed structure is urgently needed to improve the crack resistance and earthquake resistance of the roadbed. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a roadbed structure which can improve the seismic performance of the roadbed.

[0005] The specific technical solution of the embodiment of the present invention is:

[0006] A roadbed structure, comprising:

[0007] a roadbed having corresponding upper and lower surfaces;

[0008] The anti-seismic mechanism includes a first steel bar layer, a second steel bar layer located below the first steel bar layer, and a first support member, wherein the first steel bar layer and the second steel bar layer are arranged inside the roadbed, the first support member has an arc-shaped cross-section in the vertical direction, the first support member is arranged between the first steel bar layer and the second steel bar layer, the two ends of the first support member face the lower surface of the roadbed, and the outer arc surface of the first support member faces the upper surface of the roadbed.

[0009] Preferably, the anti-seismic mechanism further comprises: a second support member, the second support member is arranged between the inner arc surface of the first support member and the second steel bar layer, and the cross section of the second support member in the vertical direction is triangular.

[0010] Preferably, the top angle of the second support member faces upward, and the lower end of the second support member is parallel to the second steel bar layer; at least one side of the two sides of the second support member is connected to a third support member, and the third support member has at least a support portion with an arc-shaped cross-section, and the outer arc surface of the support portion is fixedly connected to the inner arc surface of the first support member.

[0011] Preferably, the anti-seismic mechanism further comprises: a plurality of circular buffer frames, which are symmetrically arranged in the horizontal direction between the inner arc surface of the first support member and the second steel bar layer.

[0012] Preferably, the circular buffer rack includes at least one circular ring. When there are multiple circular rings in the circular buffer rack, the multiple circular rings are arranged vertically, and adjacent circular rings are fixedly connected.

[0013] Preferably, the anti-seismic mechanism further comprises: a plurality of rubber blocks, wherein the plurality of rubber blocks are symmetrically arranged between the inner arc surface of the first support member and the second steel bar layer in the horizontal direction; and the plurality of rubber blocks are respectively located on the outer side of the circular buffer frame.

[0014] Preferably, the roadbed structure further comprises: connecting nails fixedly connected to the second reinforcement layer, the connecting nails being arranged below the second reinforcement layer, the lower ends of the connecting nails penetrating the lower surface of the roadbed and extending to the outside.

[0015] Preferably, the roadbed structure further comprises: an anchor hook fixedly connected to the second reinforcement layer, the anchor hook being arranged below the second reinforcement layer, the lower end of the anchor hook penetrating the lower surface of the roadbed and extending to the outside.

[0016] Preferably, the roadbed structure further comprises: an anti-cracking mechanism arranged on the upper surface of the roadbed, and the anti-cracking mechanism comprises: a crushed stone layer, a thermoplastic resin layer, an asphalt layer and a latex mixed layer arranged in sequence from bottom to top.

[0017] Preferably, the roadbed structure is a highway roadbed structure.

[0018] The technical solution of the present invention has the following significant beneficial effects:

[0019] In the roadbed structure of the present application, an anti-seismic mechanism having a first steel bar layer, a second steel bar layer and a first support member is arranged in the roadbed. The first steel bar layer and the second steel bar layer greatly increase the overall toughness of the roadbed structure. The arc-shaped first support member arranged between the first steel bar layer and the second steel bar layer faces its outer arc surface toward the upper surface of the roadbed, so that when subjected to vertical force, the force received can be buffered. The above structure greatly improves the overall anti-seismic performance of the roadbed structure.

[0020] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0022] Figure 1 A three-dimensional schematic diagram of a roadbed structure in an embodiment of the present invention;

[0023] Figure 2 A schematic cross-sectional view of a roadbed structure in an embodiment of the present invention;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0025] Reference numerals of the above drawings:

[0026] 1. Roadbed; 2. Earthquake-resistant mechanism; 21. First steel bar layer; 22. Second steel bar layer; 23. First support member; 24. Second support member; 25. Third support member; 26. Circular buffer frame; 27. Rubber block; 3. Connecting nails; 4. Anchor hook; 5. Anti-cracking mechanism; 51. Gravel layer; 52. Thermoplastic resin layer; 53. Asphalt layer; 54. Latex mixed layer. DETAILED DESCRIPTION

[0027] The details of the present invention can be more clearly understood by combining the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on another element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the communication between the two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] In order to improve the seismic performance of the roadbed, a roadbed structure is proposed in this application. Figure 1 is a three-dimensional schematic diagram of a roadbed structure in an embodiment of the present invention, Figure 2 FIG. 1 is a schematic cross-sectional view of a roadbed structure in an embodiment of the present invention. Figure 1 and Figure 2 As shown, the roadbed structure may include: a roadbed 1 having a corresponding upper surface and a lower surface; a seismic-resistant mechanism 2, including a first steel bar layer 21, a second steel bar layer 22 located below the first steel bar layer 21, and a first support member 23, wherein the first steel bar layer 21 and the second steel bar layer 22 are arranged inside the roadbed 1, and the first support member 23 has an arc-shaped cross-section in the vertical direction, and the first support member 23 is arranged between the first steel bar layer 21 and the second steel bar layer 22, with both ends of the first support member 23 facing the lower surface of the roadbed 1, and the outer arc surface of the first support member 23 facing the upper surface of the roadbed 1.

[0030] In the roadbed structure of the present application, an anti-seismic mechanism 2 having a first steel bar layer 21, a second steel bar layer 22 and a first support member 23 is arranged in the roadbed 1. The first steel bar layer 21 and the second steel bar layer 22 greatly increase the overall toughness of the roadbed structure. The arc-shaped first support member 23 arranged between the first steel bar layer 21 and the second steel bar layer 22 faces its outer arc surface toward the upper surface of the roadbed 1, so that when subjected to vertical force, the force received can be buffered. The above structure greatly improves the overall anti-seismic performance of the roadbed structure.

[0031] like Figure 1 and Figure 2 As shown, the roadbed 1 has corresponding upper and lower surfaces, and the roadbed 1 has a certain thickness in the vertical direction, so as to provide support for other auxiliary mechanisms, which can be provided for the anti-seismic mechanism 2 or other components arranged inside it, or for the anti-cracking mechanism 5 arranged on its upper surface. The roadbed 1 can be a concrete roadbed 1, which can greatly increase the stability and strength of the overall structure.

[0032] like Figure 1 and Figure 2 As shown, as a feasible method, the roadbed structure may include an anti-cracking mechanism 5, which is arranged on the upper surface of the roadbed 1. The anti-cracking mechanism 5 has different performance from the roadbed 1. Compared with the roadbed 1, the anti-cracking mechanism 5 has a stronger tensile stress. Therefore, compared with the roadbed 1, it is less likely to crack during daily use. As a feasible method, Figure 3 for Figure 2 The enlarged schematic diagram of point A in the figure is as follows: Figure 3 As shown, the anti-cracking mechanism 5 may include: a crushed stone layer 51, a thermoplastic resin layer 52, an asphalt layer 53 and a latex mixed layer 54 arranged in sequence from bottom to top. The crushed stone layer 51 at the bottom can make the roadbed structure have good stress resistance, and the thermoplastic resin layer 52, the asphalt layer 53 and the latex mixed layer 54 form a whole with strong tensile stress, so that the roadbed structure can be effectively prevented from cracking during daily use. Of course, the specific form of the anti-cracking mechanism 5 is not limited in this application, and other forms of anti-cracking mechanisms 5 can also be used in this application.

[0033] like Figure 2As shown, the earthquake-resistant mechanism 2 may include a first steel bar layer 21, a second steel bar layer 22 located below the first steel bar layer 21, and a first support member 23. The first steel bar layer 21 and the second steel bar layer 22 extend in the horizontal direction, and both may be in a mesh shape. The characteristics of the mesh and the steel bars may greatly increase the toughness of the entire structure. The first steel bar layer 21 and the second steel bar layer 22 are arranged inside the roadbed 1. For example, the first steel bar layer 21 is arranged at the upper part of the inside of the roadbed 1, which may be close to the upper surface of the roadbed 1. The second steel bar layer 22 is arranged at the lower part of the inside of the roadbed 1, which may be close to the lower surface of the roadbed 1.

[0034] like Figure 2 As shown, the cross-section of the first support member 23 in the vertical direction is generally arc-shaped, and the first support member 23 is arranged between the first steel bar layer 21 and the second steel bar layer 22. The first support member 23 can extend in a direction perpendicular to the paper surface and be an arc-shaped long plate. The first support member 23 can also be only an arc-shaped rod. The two ends of the first support member 23 face the lower surface of the roadbed 1, and the two ends of the first support member 23 can extend to the lower end of the roadbed 1 respectively, and further, can extend to the second steel bar layer 22 inside the roadbed 1. As feasible, the two ends of the first support member 23 can be against the second steel bar layer 22, or fixedly connected to the second steel bar layer 22, of course, it can also be not fixedly connected, and it is not specifically limited in this application. The outer arc surface of the first support member 23 faces the upper surface of the roadbed 1, and the middle part of the outer arc surface of the first support member 23 can be close to the upper surface of the roadbed 1. Furthermore, the middle of the outer arc surface of the first support member 23 can be close to the first steel bar layer 21 or against the first steel bar layer 21 or fixedly connected to the first steel bar layer 21. The first support member 23 can generally be made of a metal with high strength. The middle part and both sides of the middle part of the first support member 23 are the main force-bearing parts, which can provide effective support. The first support member 23 can well buffer the force received when it is subjected to vertical downward force due to the special properties of its own structure, greatly improving the overall seismic resistance of the roadbed structure.

[0035] like Figure 2As shown, the anti-seismic mechanism 2 may include: a second support member 24. The second support member 24 may be arranged between the inner arc surface of the first support member 23 and the second steel bar layer 22. The cross section of the second support member 24 in the vertical direction is triangular. The second support member 24 may extend in a direction perpendicular to the paper surface and be a hollow strip plate with a triangular outer contour. The second support member 24 may also be just a tripod. The second support member 24 may also generally be made of metal with higher strength. The second support member 24 may enhance the stability of the anti-seismic mechanism 2 by utilizing its own triangular structural characteristics. As feasible, since the second support member 24 has the strongest performance in withstanding pressure, the second support member 24 is generally located in the middle of the first support member 23.

[0036] In a specific embodiment, Figure 2 As shown, the top corner of the second support member 24 faces upward, and the lower end of the second support member 24 is parallel to the second steel bar layer 22. The top corner of the second support member 24 can abut against the inner arc surface of the first support member 23, or be connected to the inner arc surface of the first support member 23, thereby increasing a supporting force for the middle part of the first support member 23 and strengthening the maximum pressure that the middle part of the first support member 23 can withstand. The lower end of the second support member 24 is a bottom edge, which is parallel to the second steel bar layer 22. The bottom edge of the lower end of the second support member 24 can abut against the second steel bar layer 22 or be close to the second steel bar layer 22. Since the lower end of the second support member 24 is a bottom edge, it is more stable and can play a better supporting role.

[0037] like Figure 2 As shown, further, at least one side of the two sides of the second support member 24 is connected to a third support member 25. The third support member 25 has at least a support portion with an arc-shaped cross-section, and the outer arc surface of the support portion is fixedly connected to the inner arc surface of the first support member 23. The third support member 25 can also include a straight rod portion, and the upper end of the straight rod portion is the support portion. The straight rod portion extends in the vertical direction, and the lower end of the straight rod portion is connected to the side of the second support member 24. The third support member 25 can also generally be made of a metal with higher strength. The third support member 25 can play a supporting role. At the same time, because the support portion is arc-shaped and has a certain toughness, it can effectively enhance the stability of the mechanism and improve the shock resistance. In addition, the third support member 25 is combined with the second support member 24 and the first support member 23 to form a triangular structure, which can greatly increase stability.

[0038] like Figure 2As shown, the anti-seismic mechanism 2 may include: a plurality of circular buffer frames 26. The plurality of circular buffer frames 26 are symmetrically arranged between the inner arc surface of the first support member 23 and the second steel reinforcement layer 22 in the horizontal direction. For example, the plurality of circular buffer frames 26 are symmetrically arranged on the left and right sides of the second support member 24. The upper end of the circular buffer frame 26 can approach or abut the inner arc surface of the first support member 23, and the lower end of the circular buffer frame 26 can approach or abut the second steel reinforcement layer 22. The circular buffer frame 26 can well buffer the received force when subjected to a vertical downward force through the characteristics of its own structure, thereby greatly improving the overall anti-seismic performance of the roadbed structure.

[0039] like Figure 2 As shown, the circular buffer frame 26 includes at least one circular ring, which will produce a certain deformation when subjected to force, so as to absorb and dissipate the force, and the circular ring can also provide a certain buffering effect. When there are multiple circular rings in a circular buffer frame 26, the multiple circular rings are arranged vertically, and the adjacent circular rings are fixedly connected. By using multiple circular rings to form a circular buffer frame 26, the diameter of each circular ring can be reduced to improve the force-bearing performance of a single circular ring.

[0040] like Figure 2 As shown, the anti-seismic mechanism 2 may include: a plurality of rubber blocks 27. The plurality of rubber blocks 27 are symmetrically arranged between the inner arc surface of the first support member 23 and the second steel bar layer 22 in the horizontal direction. The plurality of rubber blocks 27 are respectively located on the outer side of the circular buffer frame 26, which can make the two sides of the first support member 23 bear the force evenly and distribute the pressure on the middle part of the first support member 23. In addition, the rubber block 27 can absorb the force by using its own rubber characteristics, thereby improving the overall anti-seismic performance of the roadbed structure.

[0041] The lower end of the rubber block 27 may be flat, and it may abut against or be close to the second steel layer 22, so as to provide better support. The upper end of the rubber block 27 may be arc-shaped, and it may abut against or be close to the inner arc surface of the first support member 23, so as to increase the force bearing area and better absorb the vertical force.

[0042] As feasible, Figure 2 As shown, there may be multiple rubber blocks 27 on the left side of the left circular buffer frame 26, and the heights of the multiple rubber blocks 27 increase from left to right, so as to match the distance between the inner arc surface of the first support member 23 and the second steel bar layer 22, so as to improve the performance of absorbing vertical forces. Similarly, there may be multiple rubber blocks 27 on the right side of the right circular buffer frame 26, and the heights of the multiple rubber blocks 27 decrease from left to right.

[0043] like Figure 2 As shown, the roadbed structure may include: a connecting nail 3 fixedly connected to the second steel reinforcement layer 22. The connecting nail 3 is arranged below the second steel reinforcement layer 22 and extends in the vertical direction. The lower end of the connecting nail 3 penetrates the lower surface of the roadbed 1 and extends to the outside. The connecting nail 3 is used to contact with the working area to enhance the stability of the entire roadbed structure.

[0044] like Figure 2 As shown, the roadbed structure may include: an anchor hook 4 fixedly connected to the second steel bar layer 22. The anchor hook 4 is arranged below the second steel bar layer 22 and extends substantially in the vertical direction. The lower end of the anchor hook 4 penetrates the lower surface of the roadbed 1 and extends to the outside. The hook at the lower end of the anchor hook 4 is used to be inserted into the working area, thereby improving the fixing effect between the roadbed structure and the working area.

[0045] The roadbed structure in the present application is preferably applicable to a highway roadbed structure. Of course, the roadbed structure may also be applicable to other occasions, and is not limited in the present application.

[0046] In the roadbed structure of the present application, the second support member 24 is arranged in the middle, and the circular buffer frame 26 and the rubber block 27 are arranged on both sides of the second support member 24 in turn. Such a structure has the following advantages: the second support member 24 has the strongest performance in bearing pressure, the circular buffer frame 26 has the second best performance in bearing pressure, and the rubber block 27 has the worst performance in bearing pressure. In actual use, the middle part of the roadbed structure may bear the greatest pressure, and it is also more likely to crack. The pressure that may be borne gradually decreases as it moves toward the sides, so the above-mentioned matching distribution setting is adopted. Secondly, the more the structure that can absorb the force is needed as it moves toward the sides, in the above-mentioned roadbed structure, the rubber block 27 has the strongest performance in absorbing the force, the circular buffer frame 26 is the second, and the second support member 24 is the weakest, thus forming a matching distribution setting. The above-mentioned structure greatly increases the anti-seismic performance and certain anti-cracking performance of the roadbed structure as a whole.

[0047] During the construction process, the workers can weld the second support member 24 and the third support member 25 into the seismic resistant mechanism 2 composed of the second steel bar layer 22, the first support member 23 and the circular buffer frame 26, and then fill the rubber block 27. After that, the seismic resistant mechanism 2 is placed in the working area where it needs to be laid, and the anchor hook 4 is inserted into the working area for fixation, and the connecting nail 3 is in contact with the working area to enhance stability; then the first steel bar layer 21 is set on the first support member 23.

[0048] After that, the staff used wooden baffles to enclose the entire structure composed of the second support member 24, the third support member 25, the first steel layer 21, the second steel layer 22, the first support member 23 and the circular buffer frame 26. Then concrete was poured in the gaps between the second support member 24, the third support member 25, the first steel layer 21, the second steel layer 22, the first support member 23, the circular buffer frame 26 and the wooden baffles, and after being left for a period of time, a roadbed 1 was formed. After that, a crushed stone layer 51, a thermoplastic resin layer 52, an asphalt layer 53 and a latex mixed layer 54 were laid on the upper surface of the roadbed 1 from bottom to top in sequence. The crushed stone layer 51 can make the roadbed structure have good stress resistance, and the whole formed by the thermoplastic resin layer 52, the asphalt layer 53 and the latex mixed layer 54 has a strong tensile stress, which can effectively prevent the roadbed structure from cracking during daily use.

[0049] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0050] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A roadbed structure, characterized in that: The roadbed structure comprises: a roadbed having corresponding upper and lower surfaces; The anti-seismic mechanism comprises a first steel bar layer, a second steel bar layer located below the first steel bar layer, and a first support member, wherein the first steel bar layer and the second steel bar layer are arranged inside the roadbed, the first support member has an arc-shaped cross section in the vertical direction, the first support member is arranged between the first steel bar layer and the second steel bar layer, the two ends of the first support member face the lower surface of the roadbed, and the outer arc surface of the first support member faces the upper surface of the roadbed; The anti-seismic mechanism further includes: a second support member, the second support member is arranged between the inner arc surface of the first support member and the second steel bar layer, the cross section of the second support member in the vertical direction is triangular; the vertex of the second support member faces upward, and the lower end of the second support member is parallel to the second steel bar layer; at least one side of the two sides of the second support member is connected to a third support member, the third support member at least has a support portion with an arc-shaped cross section, and the outer arc surface of the support portion is fixedly connected to the inner arc surface of the first support member; A plurality of circular buffer frames, wherein the plurality of circular buffer frames are symmetrically arranged between the inner arc surface of the first support member and the second steel bar layer in the horizontal direction; A plurality of rubber blocks are symmetrically arranged between the inner arc surface of the first support member and the second steel bar layer in a horizontal direction; and the plurality of rubber blocks are respectively located on the outer side of the circular buffer frame.

2. The roadbed structure according to claim 1, characterized in that: The circular buffer rack includes at least one circular ring. When there are multiple circular rings in the circular buffer rack, the multiple circular rings are arranged vertically, and adjacent circular rings are fixedly connected.

3. The roadbed structure according to claim 1, characterized in that: The roadbed structure further includes: connecting nails fixedly connected to the second reinforcement layer, the connecting nails are arranged below the second reinforcement layer, and the lower ends of the connecting nails penetrate the lower surface of the roadbed and extend to the outside.

4. The roadbed structure according to claim 1, characterized in that: The roadbed structure further includes: an anchor hook fixedly connected to the second reinforcement layer, the anchor hook is arranged below the second reinforcement layer, and the lower end of the anchor hook penetrates the lower surface of the roadbed and extends to the outside.

5. The roadbed structure according to claim 1, characterized in that: The roadbed structure also includes: an anti-cracking mechanism arranged on the upper surface of the roadbed, and the anti-cracking mechanism includes: a crushed stone layer, a thermoplastic resin layer, an asphalt layer and a latex mixed layer arranged in sequence from bottom to top.

6. The roadbed structure according to claim 1, characterized in that: The roadbed structure is a highway roadbed structure.

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