Light backfill structure for complex lawn modeling of basement

Abstract

The light backfill structure for the complex lawn model of the basement comprises a basement top plate and a top plate surface layer, and is characterized by further comprising an EPS filling plate located above the top plate surface layer, a concrete layer and a soil covering layer, the concrete layer and the soil covering layer are located on the EPS filling plate, and the soil covering layer is used for laying a lawn. According to the utility model, the problem of construction of complex modeling greening on the basement roof of a project is solved, the lawn landscape modeling is ensured, the basement roof structure is protected, and the risk of causing a large amount of load to the structure is prevented. By means of the characteristics of plasticity and light self weight of the novel EPS light high-pressure-resistance filling plate, the problems that a basement top plate is complex in shape and a large amount of soil is backfilled in a basement are solved, meanwhile, the waterproof pressure of the structure is relieved according to hydrophobicity of the novel EPS light high-pressure-resistance filling plate, the soil backfilled in the surface layer provides enough living space for growth of lawn vegetation, and the concept of green building is practiced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction technical field of earthing building, specifically a light backfill structure for complex lawn modeling of basement. BACKGROUND

[0002] At present, there are not many buildings with large height difference of basement roof, but with the modeling and aesthetic of building, the building modeling is more and more rich and varied, and it is more difficult to complete vegetation planting for the complex modeling roof basement, and more backfill soil is not conducive to modeling and will lead to increased structural load and finally affect the structural safety. SUMMARY

[0003] The utility model discloses a light backfill structure for complex lawn modeling of basement.

[0004] In order to achieve the above purpose, the utility model is realized in this way:

[0005] A light backfill structure for complex lawn modeling of basement, comprising a basement roof and a roof surface layer, further comprising an EPS filling plate above the roof surface layer, a concrete layer above the EPS filling plate and an earthing layer, and the earthing layer is used for laying lawn.

[0006] The light backfill structure for complex lawn modeling of basement, the laying structure of the EPS filling plate is staggered laying, the staggered size should be greater than 300mm, the gap and flatness between the blocks should be controlled within 20mm and 10mm respectively, and cement mortar leveling and gap filling are adopted when the gap and height difference between the blocks and the gap between the blocks and the structure.

[0007] The light backfill structure for complex lawn modeling of basement, the blocks of the EPS filling plate are fixed by double-sided or single-sided claw type metal connecting pieces.

[0008] The light backfill structure for complex lawn modeling of basement, geotextile is laid between the roof surface layer and the EPS filling plate.

[0009] The light backfill structure for complex lawn modeling of basement, drainage board or drainage pipe is arranged between the roof surface layer and the EPS filling plate, and an inclined slope is arranged to facilitate drainage.

[0010] This invention solves the problem of constructing complex-shaped green spaces on the basement roof slab of a project. It ensures the aesthetic appeal of the lawn landscape while protecting the basement roof structure and preventing the risk of excessive structural load. By utilizing the plasticity and light weight of the new lightweight, high-compression-strength EPS infill board, it alleviates the pressure from the complex basement roof shape and the large amount of soil required for backfilling. Furthermore, its water-repellent properties reduce the structural waterproofing pressure, and the surface backfill soil provides sufficient growing space for the lawn vegetation, thus embodying the concept of green building. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the splicing structure of the EPS filling board in this utility model.

[0012] Figure 2 This is a schematic diagram of the backfill structure shown in this utility model. Detailed Implementation

[0013] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0014] like Figure 1 , Figure 2 A lightweight backfill structure for complex lawn designs in basements includes a basement roof slab 3 and a roof slab surface layer, as well as an EPS filling board 1 located above the roof slab surface layer and a concrete layer and a soil covering layer 2 located above the EPS filling board 1, wherein the soil covering layer 2 is used for laying lawn.

[0015] The lightweight backfill structure for complex lawn designs in basements uses EPS infill boards 1 laid in a staggered pattern with a staggered joint size greater than 300mm. The gaps and flatness between the blocks should be controlled within 20mm and 10mm respectively. When gaps or height differences occur between the blocks, or when there are gaps between the blocks and the structure, cement mortar should be used for leveling and filling.

[0016] The aforementioned lightweight backfill structure for complex lawn designs in basements uses double-sided or single-sided claw-shaped metal connectors 4 to fix the EPS filling board 1 blocks together.

[0017] The aforementioned lightweight backfill structure for complex lawn designs in basements has a geotextile 5 laid between the top slab surface layer and the EPS filling board 1.

[0018] The aforementioned lightweight backfill structure for complex lawn designs in basements includes a drainage board or drainage pipe 6 installed between the top slab surface layer and the EPS filling board, with an inclined slope to facilitate drainage.

[0019] The specific construction method of the backfill structure is as follows,

[0020] First step: shaping and alignment: according to the shaping requirements, the site is laid out with a gray line; the construction area is determined.

[0021] Second step: base leveling: a 100mm medium-coarse sand cushion is added on the construction base surface for leveling and drainage; the sand cushion uses medium-coarse sand with a clay content of not more than 3%, and requires uniform thickness, smooth surface, and a top flatness error of ±10mm.

[0022] Third step: lightweight backfill construction: the EPS new lightweight high-compression filling board is laid. The laying of the EPS new lightweight high-compression filling board uses a staggered joint method, with a staggered joint requirement of generally ≥500mm and >300mm at special locations (such as edge locations). The gap between blocks and the flatness should be controlled within 20mm and 10mm respectively. When there is a gap between blocks and a height difference, and when there is a gap between the block and the structure, cement mortar leveling and gap filling are used, and double-sided or single-sided claw-shaped metal connecting pieces are used to fix the blocks.

[0023] The double-sided metal connecting piece is used to fix the connection of the same EPS new lightweight high-compression filling board, and the single-sided claw-shaped metal connecting piece is used to fix the connection of the outer side and top of the block. The long side of the EPS new lightweight high-compression filling board is connected with 3 claw pieces, the middle side is connected with 2 claw pieces, and the short side is connected with 1 claw piece. When laying the EPS new lightweight high-compression filling board, it can be laid from the left side to the right side, with the upper layer staggered by half the width of the block from the lower layer. The last block is a non-integer size block, and the width should not be less than 250mm.

[0024] Fourth step, geotextile construction: to increase its hydrophobicity, the EPS new lightweight high-compression filling board is a hydrophobic material and is basically a non-water-absorbing material. During construction, geotextile is considered to be wrapped, and 100mm of medium-coarse sand is wrapped around the geotextile. UPVC pipes are laid at the position of the slope toe elevation to drain the water in the sand cushion into the rainwater sump.

[0025] Fifth step: EPS protection construction: to further increase the integrity of the EPS new lightweight high-compression filling board and avoid natural damage such as tree roots above, a layer of C30 concrete with a thickness of 50mm is set on the top of the EPS new lightweight high-compression filling board layer, with φ6@150X150 steel mesh inside, with a compartment joint interval of 4-6 meters and a joint width of 10-20mm, sealed with polyurethane building sealant.

[0026] Sixth step: surface soil backfilling: after the C30 fine stone concrete reaches the specified strength, the surface soil backfilling work is carried out. The backfilling needs to meet the backfilling requirements and is backfilled to the specified elevation.

[0027] Step 7: After the backfilled soil is compacted, the upper landscape is planted with lawn and landscape.

[0028] The above are only examples provided by the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the examples, those skilled in the art can still modify the technical solutions described in the foregoing examples or make equivalent replacements to some of the technical features, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A light weight backfill structure for basement complex lawn modeling, comprising a basement roof and a roof surface layer, characterized in that: It also comprises EPS filling board above the top floor surface layer, concrete layer above the EPS filling board and earth layer for laying lawn; its features are: the laying structure of the EPS filling board is staggered laying, the staggered size should be greater than 300mm, the gap between the blocks and the flatness should be controlled within 20mm and 10mm respectively, the gap between the blocks and the height difference are adjusted by cement mortar when they occur, and the gap between the blocks and the structures is also adjusted by cement mortar. ​ 2. The basement complex lawn modeling light weight backfill structure according to claim 1, characterized in that: The blocks of the EPS filling board are fixed by double-sided or single-sided claw-shaped metal connecting members.

3. The basement complex lawn modeling light weight backfill structure according to claim 1, characterized in that: Geotextile is laid between the top floor surface layer and the EPS filling board.

4. The basement complex lawn modeling light weight backfill structure according to claim 1, characterized in that: Drainage board or drainage pipe is arranged between the top floor surface layer and the EPS filling board, and the inclined slope is arranged to facilitate drainage.

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