Environment-friendly roadbed replacing and filling structure

Abstract

The utility model relates to an environment-friendly roadbed replacement filling structure which comprises a roadbed replacement filling base layer, a gross stone layer, a construction waste crushed aggregate layer, a plain soil layer and a roadbed replacement filling top surface layer, the roadbed replacement filling base layer is a roadbed undisturbed soil layer, the gross stone layer is arranged on the upper surface of the roadbed replacement filling base layer, the plain soil layer is arranged above the gross stone layer, and the construction waste crushed aggregate layer is arranged above the plain soil layer. The construction waste crushed material layer is filled between the rough slag stone layer and the plain soil layer, the roadbed replacement top surface layer is arranged on the upper surface of the plain soil layer, and the roadbed replacement top surface layer is a pavement structure layer. According to the utility model, the construction waste and the waste wool slag are used as raw materials to replace conventional crushed gravels or block stones to serve as replacement materials of the soft soil roadbed and the miscellaneous fill roadbed, so that on one hand, the resource waste problem and the environmental problem caused by the disposal of the construction waste can be reduced, and more energy conservation and environmental protection are realized; on the other hand, the construction cost can be reduced, and meanwhile the structural strength and service life of the roadbed can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of roads, in particular to an environmentally friendly roadbed replacement structure. Background Art

[0002] In the process of urbanization, the demolition of old buildings and the reconstruction of damaged roads inevitably generate a large amount of construction waste in the form of solid waste. The main way to deal with these construction wastes is either to landfill them, which causes waste of landfills (land resources), or to transport them to wasteland in the suburbs and abandon them, which not only causes waste of land resources, but also brings great environmental pollution problems. At the same time, the construction of various new projects inevitably requires the use of various stones. After the high-quality stones in the quarry are sold, the remaining scraps - rough stone slag are often abandoned, which also causes waste and environmental pollution problems. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an environmentally friendly roadbed replacement structure in view of the deficiencies of the above-mentioned prior art.

[0004] The utility model provides a technical solution for solving the above-mentioned technical problems as follows: an environmentally friendly roadbed replacement structure, comprising a roadbed replacement base layer, a ballast stone layer, a construction waste crushed material layer, a bare soil layer and a roadbed replacement top surface layer, wherein the roadbed replacement base layer is the original soil layer of the roadbed, the ballast stone layer is arranged on the upper surface of the roadbed replacement base layer, the bare soil layer is arranged above the ballast stone layer, and the construction waste crushed material layer is filled between the ballast stone layer and the bare soil layer, the roadbed replacement top surface layer is arranged on the upper surface of the bare soil layer, and the roadbed replacement top surface layer is a pavement structure layer.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows:

[0006] Furthermore, the thickness of the rough slag layer is 50-100 cm, the thickness of the construction waste crushed material layer is 50-80 cm, and the thickness of the plain soil layer is 80 cm.

[0007] Further: the rough stone layer is discarded rough stone slag with irregular shapes.

[0008] Furthermore: the strength of the rough stone slag in the rough stone layer is not less than 10Mpa, and the particle size range is 50 to 300mm.

[0009] Further: the construction waste fragment layer is concrete construction waste fragments.

[0010] Furthermore: the particle size of the concrete construction waste fragments in the construction waste debris layer is not greater than 150 mm.

[0011] The environmentally friendly roadbed replacement structure of the utility model adopts construction waste and discarded rubble slag as raw materials, replacing conventional crushed gravel or boulders, as replacement materials for existing soft soil roadbed and mixed fill roadbed. On the one hand, it can reduce the resource waste and environmental problems caused by the disposal of construction waste, and be more energy-saving and environmentally friendly. On the other hand, it can reduce the project cost, and at the same time ensure the structural strength and service life of the roadbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The schematic diagram of the structure of an environmentally friendly roadbed replacement structure according to one embodiment of the utility model.

[0013] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0014] 1. Roadbed replacement base layer, 2. Slag stone layer, 3. Construction waste crushed material layer, 4. Plain soil layer, 5. Roadbed replacement top surface layer. DETAILED DESCRIPTION

[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0016] like Figure 1 As shown, an environmentally friendly roadbed replacement structure includes a roadbed replacement base layer 1, a ballast stone layer 2, a construction waste crushed material layer 3, a bare soil layer 4 and a roadbed replacement top surface layer 5, wherein the roadbed replacement base layer 1 is the original soil layer of the roadbed, the ballast stone layer 2 is arranged on the upper surface of the roadbed replacement base layer 1, the bare soil layer 4 is arranged above the ballast stone layer 2, and the construction waste crushed material layer 3 is filled between the ballast stone layer 2 and the bare soil layer 4, the roadbed replacement top surface layer 5 is arranged on the upper surface of the bare soil layer 4, and the roadbed replacement top surface layer 5 is a pavement structure layer.

[0017] In one or more embodiments of the utility model, the upper part of the original soil layer 1 is a 1-3m deep miscellaneous fill layer, and the lower part is a 2-3m deep silty clay layer. Specifically, the miscellaneous fill layer is an uneven soil layer, and the proportion of domestic garbage is about 30%; the water content of the silty clay layer is 47%, the characteristic value of bearing capacity is 55KPa, and the compression modulus is 3MPa.

[0018] In one or more embodiments of the present invention, the thickness of the rough slag layer 2 is 50-100 cm, the thickness of the construction waste crushed material layer 3 is 50-80 cm, and the thickness of the plain soil layer 4 is 80 cm.

[0019] In one or more embodiments of the present invention, the rough stone layer 2 is waste rough stone slag with irregular shapes. In practice, the rough stone slag is filled and compacted in two layers.

[0020] In one or more embodiments of the present invention, the strength of the rough stone slag in the rough stone layer 2 is not less than 10 MPa, and the particle size range is 50 to 300 mm.

[0021] In one or more embodiments of the utility model, the construction waste crushed material layer 3 is concrete-type construction waste crushed pieces. In practice, the construction waste crushed material layer 3 is 60 cm thick and is filled and compacted in two layers. Specifically, the large-size construction waste crushed pieces are placed in the lower layer for compaction, and the small-size construction waste crushed pieces are placed in the upper layer for compaction.

[0022] In one or more embodiments of the present invention, the particle size of the concrete construction waste fragments in the construction waste fragment layer 3 is not greater than 150 mm.

[0023] In one or more embodiments of the utility model, when the rough slag stone layer 2 and the construction waste crushed material layer 3 are compacted, the compaction quality is controlled by the porosity and the compaction settlement difference. Specifically, the porosity of the rough slag stone layer 2 is not greater than 22%, and the compaction settlement difference is not greater than 5 mm. Specifically, the porosity of the construction waste crushed material layer 3 is not greater than 20%, and the compaction settlement difference is not greater than 5 mm.

[0024] In one or more embodiments of the present invention, the bare soil layer 4 is specifically composed of qualified earthwork that meets the requirements of the "Urban Road Subgrade Design Specifications" or the "Highway Subgrade Design Specifications", and has a thickness of 80 cm.

[0025] In one or more embodiments of the present invention, the roadbed replacement top surface layer 5 is specifically composed of an asphalt concrete surface layer, a cement-stabilized crushed stone base layer and a graded crushed stone cushion layer, with a total thickness of 75 cm.

[0026] The roadbed replacement structure of the utility model is suitable for the roadbed replacement of motor vehicles on urban trunk roads and urban secondary trunk roads, as well as the roadbed replacement of secondary highways and primary highways.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmentally friendly roadbed replacement structure, characterized by: The invention comprises a roadbed replacement base layer (1), a rough slag layer (2), a construction waste crushed material layer (3), a plain soil layer (4) and a roadbed replacement top surface layer (5), wherein the roadbed replacement base layer (1) is an original soil layer of the roadbed, the rough slag layer (2) is arranged on the upper surface of the roadbed replacement base layer (1), the plain soil layer (4) is arranged above the rough slag layer (2), and the construction waste crushed material layer (3) is filled between the rough slag layer (2) and the plain soil layer (4), and the roadbed replacement top surface layer (5) is arranged on the upper surface of the plain soil layer (4), and the roadbed replacement top surface layer (5) is a pavement structure layer.

2. The environmentally friendly roadbed replacement structure according to claim 1 is characterized by: The thickness of the rough slag layer (2) is 50 to 100 cm, the thickness of the construction waste crushed material layer (3) is 50 to 80 cm, and the thickness of the plain soil layer (4) is 80 cm.

3. The environmentally friendly roadbed replacement structure according to claim 2 is characterized by: The rough stone layer (2) is discarded rough stone slag with irregular shapes.

4. The environmentally friendly roadbed replacement structure according to claim 3 is characterized by: The strength of the rough stone slag in the rough stone layer (2) is not less than 10Mpa, and the particle size range is 50 to 300mm.

5. The environmentally friendly roadbed replacement structure according to claim 1 is characterized in that: The construction waste fragment layer (3) is concrete-type construction waste fragments.

6. The environmentally friendly roadbed replacement structure according to claim 5 is characterized by: The particle size of the concrete construction waste fragments in the construction waste fragment layer (3) is not greater than 150 mm.

7. The environmentally friendly roadbed replacement structure according to claim 6 is characterized by: The porosity of the rough slag layer 2 is not greater than 22%, and the porosity of the construction waste crushed material layer 3 is not greater than 20%.

8. The environmentally friendly roadbed replacement structure according to claim 6 is characterized by: The roadbed replacement top surface layer (5) is composed of an asphalt concrete surface layer, a cement-stabilized crushed stone base layer and a graded crushed stone cushion layer, and has a thickness of 70-80 cm.

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