Foam lightweight concrete structure

Abstract

The utility model discloses a foam lightweight concrete structure which comprises a pavement layer structure, a concrete protection layer is laid at the bottom of the pavement layer structure, a foam concrete layer is laid at the bottom of the concrete protection layer, a broken stone hardcore is laid at the bottom of the foam concrete layer, a first supporting layer is laid at the bottom of the broken stone hardcore, and a second supporting layer is laid at the bottom of the first supporting layer. A second supporting layer is laid at the bottom of the first supporting layer, and a third supporting layer is laid at the bottom of the second supporting layer; by adopting the foam concrete roadbed, the filling load is reduced, and differential settlement and fluctuation of the pavement are reduced, so that the driving comfort and the highway service level are improved, the service life is prolonged, the operation and maintenance cost is reduced, and the foam concrete roadbed is more practical; environmental damage is avoided, land resources can be saved, and therefore the device is more practical, convenient to construct and easy to operate, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roadbed structures, in particular to a foam lightweight concrete structure. Background Art

[0002] As a new type of fill material, foam concrete has many characteristics such as low density, good uprightness and good fluidity. The roadbed cast with it is an integral structure. After the foundation settlement is transferred upward to the pavement structure through this roadbed structure, the difference in lateral settlement is reduced. In addition, the foundation load is greatly reduced under the action of the lightweight soil roadbed. Therefore, the lightweight soil roadbed can not only reduce the total settlement, post-construction settlement and differential settlement, but also improve the stability of the roadbed and structure. It can effectively solve the problems of excessive settlement and insufficient stability in deep soft foundation and high fill roadbed, and has practical value.

[0003] Authorization announcement number CN218989751U discloses a novel foam lightweight concrete roadbed structure. This device mainly uses multiple base columns to reinforce the rammed earth layer and reinforce the lower foam lightweight soil layer. It uses multiple transverse steel bars and multiple longitudinal steel bars to improve the bearing strength and compressive performance of the concrete layer. It uses a top surface reinforcement layer and two inclined surface reinforcement layers to reinforce the top and the inclined surfaces on both sides of the roadbed body. It uses multiple reinforcement columns to enhance the stability of the connection between the lower foam lightweight soil layer, the first metal mesh, the crushed stone layer, the second metal mesh, the gravel layer, the third metal mesh and the upper foam lightweight soil layer, thereby improving the stability and bearing strength of the roadbed body and extending the service life of the roadbed body. However, when the structure is actually used, it still has the following defects:

[0004] The above patent mainly utilizes the structural design of reinforcing columns and metal mesh layers to improve the stability and bearing strength of the roadbed. However, when applied to soft soil, due to the poor properties of the soft soil, the thick soft soil foundation and the high roadbed fill, it is easy to cause foundation settlement, reduce the stability of the fill on the soft soil foundation, reduce the driving comfort during the road operation period and the durability of the roadbed and pavement structure. Utility Model Content

[0005] The purpose of the present invention is to provide a foam lightweight concrete structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a foam lightweight concrete structure, comprising a pavement layer structure, a concrete protective layer is laid at the bottom of the pavement layer structure, a foam concrete layer is laid at the bottom of the concrete protective layer, a crushed stone cushion layer is laid at the bottom of the foam concrete layer, a first supporting layer is laid at the bottom of the crushed stone cushion layer, a second supporting layer is laid at the bottom of the first supporting layer, and a third supporting layer is laid at the bottom of the second supporting layer.

[0007] Preferably, the pouring height of the pavement layer structure is 0.5-1m.

[0008] Preferably, the concrete in the concrete protective layer is made of C25 cement, and the pouring height is 0.1-0.5m.

[0009] Preferably, the pouring height of the foam concrete layer is 5-10m.

[0010] Preferably, the pouring height of the crushed stone cushion layer is 0.1-0.5m.

[0011] Preferably, the first supporting layer is silty clay, and the pouring height is 0.5-1.5m.

[0012] Preferably, the second supporting layer is silt, and the pouring height is 6-8m.

[0013] Preferably, the third supporting layer is sandy clay soil, and the pouring height is 5-10m.

[0014] The foamed lightweight concrete structure proposed in this utility model has at least the following beneficial effects:

[0015] 1. By adopting foam concrete roadbed, the fill load is reduced, and the uneven settlement and undulation of the road surface are reduced, thereby improving driving comfort and highway service level, extending service life, reducing operation and maintenance costs, and being more suitable for practical use.

[0016] 2. The foam concrete structure has no pollution to the environment during construction, avoids environmental damage and saves land resources, making it more practical, convenient to construct, easy to operate, and reduces construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a foam concrete structure of the present utility model.

[0018] In the figure: 1. Pavement layer structure; 2. Concrete protective layer; 3. Foam concrete layer; 4. Gravel cushion layer; 5. First supporting layer; 6. Second supporting layer; 7. Third supporting layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1 The present invention provides an embodiment of a foam lightweight concrete structure, comprising a pavement layer structure 1, the pouring height of the pavement layer structure 1 being 0.5-1m, a concrete protective layer 2 being laid at the bottom of the pavement layer structure 1, the concrete in the concrete protective layer 2 being made of C25 cement and having a pouring height of 0.1-0.5m, and being used to support the pavement structure layer 1 and improve overall stability, a foam concrete layer 3 being laid at the bottom of the concrete protective layer 2, the pouring height of the foam concrete layer 3 being 5-10m, a crushed stone cushion layer 4 being laid at the bottom of the foam concrete layer 3, the pouring height of the crushed stone cushion layer 4 being 0.1-0.5m;

[0021] A first supporting layer 5 is laid at the bottom of the gravel cushion layer 4. The first supporting layer 5 is silty clay and has a pouring height of 0.5-1.5m. It is used to prevent the gravel cushion layer 4 from loosening and improve the overall stability. A second supporting layer 6 is laid at the bottom of the first supporting layer 5. The second supporting layer 6 is silt and has a pouring height of 6-8m. It is used to play a wear-resistant and filling role. A third supporting layer 7 is laid at the bottom of the second supporting layer 6. The third supporting layer 7 is sandy clay and has a pouring height of 5-10m. It is used to improve the stability of the second supporting layer 6 during laying.

[0022] Working Principle: In this foam lightweight concrete structure;

[0023] A concrete protective layer 2 is laid at the lower end of the pavement structure layer 1 to improve the stability of the pavement structure layer 1 after laying; a foam concrete layer 3 is laid at the lower end of the concrete protective layer 2, and a gravel cushion layer 4 is laid at the lower end of the foam concrete layer 3 to support the foam concrete layer 3 and improve the stability of the structure; a first supporting layer 5 is laid at the lower end of the gravel cushion layer 4 to prevent the gravel cushion layer 4 from loosening; a second supporting layer 6 is laid at the lower end of the first supporting layer 5 to provide wear resistance; a third supporting layer 7 is laid at the lower end of the second supporting layer 6; and a three-group supporting layer structure is laid to improve the overall stability of the concrete base surface.

[0024] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0025] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connected" should be understood in a broad sense. For example, they can refer to fixed or detachable connections, mechanical or electrical connections, and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A foamed lightweight concrete structure, comprising a pavement layer structure (1), characterized in that: A concrete protective layer (2) is laid on the bottom of the pavement layer structure (1), a foamed concrete layer (3) is laid on the bottom of the concrete protective layer (2), a crushed stone cushion layer (4) is laid on the bottom of the foamed concrete layer (3), a first supporting layer (5) is laid on the bottom of the crushed stone cushion layer (4), a second supporting layer (6) is laid on the bottom of the first supporting layer (5), and a third supporting layer (7) is laid on the bottom of the second supporting layer (6).

2. The foamed lightweight concrete structure according to claim 1, characterized in that: The pouring height of the pavement layer structure (1) is 0.5-1m.

3. The foamed lightweight concrete structure according to claim 1, characterized in that: The concrete in the concrete protective layer (2) is made of C25 cement, and the pouring height is 0.1-0.5m.

4. The foamed lightweight concrete structure according to claim 1, characterized in that: The pouring height of the foam concrete layer (3) is 5-10m.

5. The foamed lightweight concrete structure according to claim 1, characterized in that: The pouring height of the crushed stone cushion layer (4) is 0.1-0.5m.

6. The foamed lightweight concrete structure according to claim 1, characterized in that: The first supporting layer (5) is silty clay, and the pouring height is 0.5-1.5m.

7. The foamed lightweight concrete structure according to claim 1, characterized in that: The second supporting layer (6) is silt, and the pouring height is 6-8m.

8. The foamed lightweight concrete structure according to claim 1, characterized in that: The third supporting layer (7) is sandy clay soil, and the pouring height is 5-10m.

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