CN219604064U - Roadbed structure suitable for underground building top - Google Patents

Abstract

The utility model aims to provide a roadbed structure suitable for the top of a underground building, which comprises a substrate layer, an EPS filling layer, a drainage layer and a filtering reinforcement layer, wherein the substrate layer and the EPS filling layer are sequentially arranged from bottom to top, the drainage layer is arranged between the substrate layer and the EPS filling layer and is used for blocking water from leaking to the substrate layer, and the filtering reinforcement layer is arranged on the upper surface and the lower surface of the EPS filling layer and is used for filtering sediment and reinforcing and protecting the EPS filling layer. In order to enhance the water resistance of the roadbed structure, a drainage layer is provided. The drainage layer is arranged between the basal layer and the EPS filling layer, and water is stopped at the drainage layer at last, so that the water is prevented from leaking downwards to the underground building. The filtering reinforcement layer can be made of geotextile materials for buildings such as non-woven fabrics, nano limiting films and the like. On one hand, the materials such as non-woven fabrics and the like can filter and separate sediment and prevent the downward-moving sediment from moving and wearing the EPS material due to the holes; on the other hand, after being tiled and fixed on the surface of EPS material, the EPS material binding device is similar to the case of binding objects by using ropes, and is equivalent to binding and fixing all EPS blocks together, so that stress is dispersed, and concentrated load is avoided.

Description

Roadbed structure suitable for underground building top

Technical Field

The utility model relates to the technical field of constructional engineering, in particular to a roadbed structure suitable for the top of a underground building.

Background

The roadbed is a foundation of a pavement and is a geotechnical structure formed by excavation or filling. Polystyrene foam (EPS for short) has the advantages of ultra-light weight, compression resistance, self-standing property, water resistance and the like, and can be used as filling soil, back filler of a structure and the like. In the roadbed construction, the construction method of using EPS to replace and fill part of roadbed filling soil has the functions of reducing roadbed heaviness and roadbed settlement. For example, the EPS replacement technology is used on the top of the underground building, so that the load born by the top of the underground building can be reduced, and the safety is ensured.

The Chinese patent document with publication number of CN209482075U discloses a embankment structure filled by EPS roadbed plates, which comprises a pavement structure layer, a filling layer, a substrate and the like. The substrate is arranged at the bottommost layer, and the filling layer and the pavement structure layer are sequentially arranged above the substrate. The filling layer is formed by overlapping and paving a plurality of layers of EPS roadbed plates in a staggered joint manner. The pavement structure layer comprises a wearing layer, a reinforced concrete cover plate, a sand stone leveling layer and the like which are arranged above the filling layer. EPS roadbed quality is light, can prevent that the road bed from subsideing, but this embankment structure still has following defect: the sand stone layer and other structures in the pavement structure layer are directly paved above the filling layer, so that the filling layer is worn, the EPS blocks are easy to shift after being subjected to the force exceeding the load bearing force, and the roadbed is settled and uneven; the waterproof performance is poor, and water permeates downwards in a large amount and when the embankment structure is positioned on an underground building such as an underground garage, water is easy to permeate downwards to the underground building, so that the underground building leaks water and the like, and inconvenience is brought.

Disclosure of Invention

The utility model aims to provide a roadbed structure suitable for the top of an underground building, which reduces the load borne by the top of the underground building and has good waterproof performance, and water is not easy to leak into the underground building through the roadbed structure; the EPS module is difficult to be worn and shifted, and the roadbed structure is firm and stable, and long service life.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a roadbed structure suitable for underground building top contains stratum basale and EPS filling layer that from bottom to top set gradually, still contains the drainage layer that is used for blockking the water seepage to the stratum basale and sets up and is used for filtering silt and consolidates the filtration reinforcement layer that protects EPS filling layer at EPS filling layer upper and lower surface between stratum basale and EPS filling layer.

Therefore, the substrate layer is positioned at the bottommost part and is arranged above the underground building, and can be a cement plate, a steel rib plate and other structures. The EPS filling layer is used as roadbed filling material and is arranged above the basal layer to replace the prior heavier gravel pile and other structures, and can be formed by splicing a plurality of EPS blocks. In order to enhance the water resistance of the roadbed structure, a drainage layer is provided. The drainage layer sets up between stratum basale and EPS filling layer, and water ends and flows in the drainage layer at last to prevent water infiltration to the stratum basale downwards, avoided leaking to the underground construction downwards again.

Because the unavoidable needs in the roadbed structure use the grit to fill and cover in EPS filling layer top, be convenient for follow-up planting trees or add other roadbed materials in the upper strata. When rainwater leaks downwards, can drive the silt of EPS filling layer upper surface and remove downwards, on the one hand silt can cause EPS material wearing and tearing to reduce life-span, on the other hand can block up the drain board layer, causes the seepage. In order to avoid the problems, the filtering reinforcement layers are additionally arranged on the upper surface and the lower surface of the EPS filling layer, and the filtering reinforcement layers can be made of geotextile materials for buildings such as non-woven fabrics, nano limiting films and the like. On one hand, the materials such as non-woven fabrics and the like can filter and separate sediment and prevent the downward-moving sediment from moving and wearing the EPS material due to the holes; on the other hand, after being tiled and fixed on the surface of EPS material, the EPS material binding device is similar to the case of binding objects by using ropes, and is equivalent to binding and fixing all EPS blocks together, so that stress is dispersed, and concentrated load is avoided. The EPS filling layer can prevent shifting after being fixed up and down, and roadbed settlement is avoided. In addition, the EPS material with the flexibility is not easily damaged by the flexible material such as non-woven fabrics.

Preferably, the drainage layer comprises a water accumulation box body with a water inlet at the top, and the water accumulation box body comprises a water outlet; the inner bottom surface of the ponding box body is provided with a diversion trench for diversion of water to the water outlet.

Preferably, the EPS packing layer comprises a plurality of EPS roadbed blocks, and the roadbed structure further comprises a connector for splicing the EPS roadbed blocks; the connecting piece comprises a mounting seat and a plurality of connecting parts which are connected with the mounting seat and used for fixing EPS roadbed blocks.

Preferably, the connecting part is movably connected to the mounting seat and is fixed above or below the mounting seat through a fixing piece.

Preferably, the connecting part comprises a plugging thorn, and the EPS roadbed block comprises a jack matched with the plugging thorn.

Preferably, the mounting seats comprise plug holes and plug rods, and adjacent mounting seats are detachably spliced with the plug rods through the plug holes.

Preferably, the filtering and reinforcing layer comprises non-woven fabrics paved on the upper surface and the lower surface of the EPS filling layer.

Preferably, the nonwoven fabric is fixed to the EPS filler layer by staple penetration.

Preferably, the spacing between adjacent EPS subgrade plates is not more than 20mm.

Preferably, sand is filled between adjacent EPS subgrade plates.

In summary, the embodiment of the utility model has the following beneficial effects:

1. the drainage layer sets up between stratum basale and EPS filling layer, and water ends and flows in the drainage layer at last to prevent water infiltration to the stratum basale downwards, avoided leaking to the underground construction downwards again.

2. The drainage layer comprises a ponding box body with a water inlet at the top, and the ponding box body comprises a water outlet; the inner bottom surface of the ponding box body is provided with a diversion trench for diversion of water to the water outlet. The water which seeps downwards enters the box body from the water inlet at the top of the ponding box body, then flows to the outlet automatically through the diversion of the diversion trench, and is discharged out of the box body. The slope of the diversion trench is larger as the diversion trench is closer to the water outlet, so that water is drained to the water outlet.

3. The filtering reinforcement layers are additionally arranged on the upper surface and the lower surface of the EPS filling layer, and can be made of non-woven fabrics, nano limiting films and other geotextile materials for buildings. On one hand, the EPS material can filter and separate sediment due to the holes, so that the downward-moving sediment is prevented from moving and wearing the EPS material; on the other hand, after being tiled and fixed on the surface of EPS material, the EPS material binding device is similar to the case of binding objects by using ropes, and is equivalent to binding and fixing all EPS blocks together, so that stress is dispersed, and concentrated load is avoided. The EPS filling layer can prevent shifting after being fixed up and down, and roadbed settlement is avoided.

4. Comprises a connector for splicing a plurality of EPS roadbed blocks; the connecting piece comprises a mounting seat and a plurality of connecting parts which are connected with the mounting seat and used for fixing EPS roadbed blocks. Each connecting part is connected with one EPS roadbed plate, so that a plurality of EPS roadbed plates are fixed on the same connecting piece, and centralized installation and fixation are facilitated.

5. For two-layer EPS road bed plate about fixed, connecting portion swing joint is in the mount pad and fix in the top or the below of mount pad through the mounting to two-layer EPS road bed plate about can fixing simultaneously prevents that each layer EPS road bed plate from easily taking place the relative slip.

6. The connecting pieces on the same layer are connected and fixed with each other and then integrated to form a firm substrate, so that the firm stability of the roadbed structure is enhanced. The mounting seats comprise plug holes and plug rods, and adjacent mounting seats are detachably spliced with the plug rods through the plug holes.

Drawings

FIG. 1 is a schematic diagram of an embodiment;

FIG. 2 is a schematic view of a drainage layer;

fig. 3 is a schematic view of a coupler.

In the figure:

1. the foundation layer, 2, EPS filling layer, 21, EPS road bed plate, 3, drainage layer, 31, ponding box body, 311, guiding gutter, 4, connecting piece, 41, mount pad, 42, connecting portion, 421, grafting thorn.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

As shown in fig. 1, a roadbed structure suitable for underground building top contains stratum basale 1 and EPS filling layer 2 that from bottom to top set gradually, still contains setting up and is used for blockking water seepage to stratum basale 1's drainage layer 3 and sets up and be used for filtering silt and consolidates the filtration reinforcement layer that protects EPS filling layer 2 at the upper and lower surface of EPS filling layer 2 between stratum basale 1 and EPS filling layer 2.

The substrate layer 1 is positioned at the bottommost part and is arranged above the underground building, and can be a cement plate, a steel rib plate and other structures. The EPS filling layer 2 is used as a roadbed filling material and is arranged above the base layer 1 to replace the prior heavier gravel pile and other structures, and is formed by splicing a plurality of EPS roadbed blocks 21. To enhance the water resistance of the roadbed structure, a drainage layer 3 is provided. The drainage layer 3 is arranged between the substrate layer 1 and the EPS filling layer 2, and water finally stops flowing in the drainage layer 3, so that water is prevented from leaking downwards to the substrate layer 1 and then leaking downwards to the underground building.

In actual construction, a micro-terrain auxiliary positioning method based on BIM technology can be adopted to parameterize the terrain line shape for construction control, so that proper positions for placing the substrate layer 1, the EPS filling layer 2 and the drainage layer 3 are found. Specifically, original data of the site is acquired through a GPS and a total station, a site data model is built, and the site data model is processed through a micro-topography optimization scheme to obtain an optimized BIM model, so that plane coordinates and elevations of each structural layer in the construction process can be obtained in real time, and the site with complicated and changeable line shape is parameterized, so that the site is convenient to use for construction control. The earthwork is excavated, the construction is replaced and filled accurately in place as required, the earthwork overexcavation and underexcavation can be avoided, the EPS roadbed material replacement and filling construction is efficient, quick and accurate, and meanwhile the leveling and attractiveness of post-greening planting soil can be met. The road surface of the ramp which is assisted by the BIM technology can meet the requirement of the flatness of the road surface and the gradient of the ramp.

In EPS road bed trades fills construction process, in order to guarantee the accurate location of the little topography of road surface ramp, the elevation is accurate, also shows the accurate vivid demonstration in the scene with ramp topography curve simultaneously, still needs to assist the location through BIM technique.

As shown in fig. 2, the drainage layer 3 comprises a water accumulation box body 31 with a water inlet at the top, and the water accumulation box body 31 comprises a water outlet; the inner bottom surface of the ponding box body 31 is provided with a diversion trench 311 for diversion of water to the water outlet. The water seeping downwards enters the box body from the water inlet at the top of the ponding box body 31, then flows to the outlet automatically through the diversion of the diversion trench 311, and is discharged out of the box body. The slope of the diversion trench 311 is larger as the diversion trench is closer to the water outlet, so that water is drained to the water outlet.

As shown in fig. 1, the roadbed structure is usually filled with sand and covered above the EPS filling layer 2, so that trees can be planted on the upper layer or other roadbed materials can be added. When rainwater leaks downwards, can drive the silt of EPS filling layer 2 upper surface and remove downwards, on the one hand silt can cause EPS material surface abrasion to reduce life-span, on the other hand can block drainage layer 3, causes the seepage.

In order to avoid the problems, the upper surface and the lower surface of the EPS filling layer 2 are additionally provided with the filtering reinforcement layer, the filtering reinforcement layer comprises non-woven fabrics paved on the upper surface and the lower surface of the EPS filling layer 2, and waterproof geotechnical cloth and the non-woven fabrics can be stacked together for use. The non-woven fabric and other materials have the characteristics of high tensile strength, good permeability, high temperature resistance, freezing resistance, aging resistance, corrosion resistance and the like. On one hand, the non-woven fabric material has holes, so that the non-woven fabric material can permeate water and can filter and separate sediment, and the downward-moving sediment is prevented from moving and wearing the EPS material; on the other hand, after being tiled and fixed on the surface of EPS material, the EPS subgrade plate 21 is bound and fixed together in a similar way as the binding of objects by using ropes, so that stress is dispersed, and concentrated load is avoided. The EPS filling layer 2 can prevent shifting after being fixed up and down, and roadbed settlement is avoided. The non-woven fabrics are fixed on each EPS subgrade plate 21 through the puncture of the fixing nails, so that the fixation is convenient.

As shown in fig. 1 and 3, the EPS packing layer 2 includes a plurality of EPS roadbed slabs 21, and the roadbed structure further includes a joint 4 for splicing the plurality of EPS roadbed slabs 21; the coupling member 4 includes a mounting seat 41 and a plurality of connection portions 42 connected to the mounting seat 41 for fixing the EPS bed slab 21. Each connecting part 42 is connected with one EPS roadbed plate 21, so that a plurality of EPS roadbed plates 21 are fixed on the same connecting piece 4, and centralized installation and fixation are facilitated. The interval between the respective connection portions 42 may be set to a fixed value so that the interval between the respective EPS bed slabs 21 is fixed, and the EPS packing layer 2 is structurally stable and uniformly stressed at the respective positions.

The EPS packing layer 2 is generally a multi-layer structure, and the EPS roadbed blocks 21 of different layers are prone to relative sliding, so that the roadbed structure is unstable. In order to fix the upper and lower EPS roadbed blocks 21, the connecting portion 42 is movably connected to the mounting seat 41 and is fixed above or below the mounting seat 41 by a fixing member. When the joint 4 is used to fix the bottommost EPS roadbed block 21, the joint 4 is placed below the EPS roadbed block 21, and the connecting portions 42 are all provided upward with the EPS roadbed block 21 of a fixed single layer. When the joint 4 is disposed between the two EPS roadbed blocks 21, the partial connecting portion 42 is upwardly disposed to fix the upper EPS roadbed block 21, and the partial connecting portion 42 is downwardly disposed to connect the lower EPS roadbed block 21, thereby playing a role in fixing the two EPS roadbed blocks 21. The connecting portion 42 is rotatably connected to the mounting base 41 and fixed in position by a structure such as a buckle or a bolt.

For convenient connection with the EPS bed plate 21, the connecting portion 42 includes a plug-in spike 421, and the EPS bed plate 21 includes a jack adapted to the plug-in spike 421.

The number of EPS subgrade plates 21 is large, and each layer needs to be connected and fixed by using a plurality of connectors 4. The connecting pieces 4 on the same layer are connected and fixed with each other and then integrated to form a firm base, so that the firm stability of the roadbed structure is enhanced. The mounting seats 41 comprise plug holes and plug rods, and adjacent mounting seats 41 are detachably spliced with the plug rods through the plug holes.

Because there is the condition of expend with heat and contract with cold, need leave the clearance between the adjacent EPS road bed plate 21, it is through actual construction experience to obtain, and interval between the adjacent EPS road bed plate 21 is not more than 20mm, and after filling with the grit between the adjacent EPS road bed plate 21, guarantee to guarantee that the structure is firm when not having the influence that the expend with heat and contract with cold brought.

Claims (10)

1. The utility model provides a roadbed structure suitable for underground building top, contains stratum basale (1) and EPS filling layer (2) that set gradually from bottom to top, its characterized in that still contains drainage layer (3) that are used for blockking water seepage to stratum basale (1) and set up and be used for filtering silt and consolidate the filtration reinforcement layer that protects EPS filling layer (2) at EPS filling layer (2) upper and lower surface between stratum basale (1) and EPS filling layer (2).

2. A substructure suitable for the top of a subterranean construction according to claim 1, wherein the drainage layer (3) comprises a water accumulation box (31) with a water inlet at the top, the water accumulation box (31) comprising a water outlet; the inner bottom surface of the ponding box body (31) is provided with a diversion trench (311) for diversion of water to the water outlet.

3. A substructure suitable for use on top of a building under ground according to claim 1, characterized in that the EPS infill layer (2) comprises a plurality of EPS subgrade panels (21), which subgrade structure further comprises a coupling (4) for splicing EPS subgrade panels (21); the connecting piece (4) comprises a mounting seat (41) and a plurality of connecting parts (42) which are connected with the mounting seat (41) and used for fixing the EPS subgrade plate (21).

4. A substructure suitable for the top of a subterranean construction according to claim 3, wherein the connection (42) is movably connected to the mounting (41) and is fixed above or below the mounting (41) by means of a fixing.

5. A substructure suitable for use in a roof of a subterranean building according to claim 3, wherein the connection (42) comprises a plug-in spike (421), and the EPS-subgrade block (21) comprises a socket adapted to the plug-in spike (421).

6. The roadbed structure suitable for the top of a subterranean construction according to claim 4, wherein the mounting seats (41) comprise plug holes and plug rods, and adjacent mounting seats (41) are detachably spliced with the plug rods through the plug holes.

7. A roadbed structure suitable for use on the top of a subterranean construction according to claim 1, wherein the filtering and reinforcing layer comprises non-woven fabrics laid on the upper and lower surfaces of the EPS filling layer (2).

8. A roadbed structure adapted for use on the roof of a subterranean construction according to claim 7, wherein the nonwoven is fastened to the EPS packing layer (2) by means of staple punctures.

9. A substructure suitable for use on top of a subterranean building according to claim 5, wherein the spacing between adjacent EPS subgrade blocks (21) is not more than 20mm.

10. A substructure suitable for use in a roof of a subterranean construction according to claim 9, wherein between adjacent EPS panels (21) is filled with sand.