CN217651539U - Roadbed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall - Google Patents
Roadbed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall Download PDFInfo
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- CN217651539U CN217651539U CN202220648680.8U CN202220648680U CN217651539U CN 217651539 U CN217651539 U CN 217651539U CN 202220648680 U CN202220648680 U CN 202220648680U CN 217651539 U CN217651539 U CN 217651539U
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Abstract
The utility model discloses a road bed engineering structure is with compound waterproof drainage blanket, foundation structure and retaining wall relates to road bed engineering technical field. The composite waterproof drainage layer comprises a filter layer consisting of polypropylene geotextile, a drainage layer consisting of a nylon net inner core layer, a polyester geotextile layer, a waterproof film layer and a polyester geotextile layer which are sequentially arranged. The polyester filament geotextile layer, the waterproof membrane layer and the polyester filament geotextile layer form a waterproof layer, and the two layers of polyester filament geotextile play a role in buffering and protecting by utilizing the waterproof performance of the waterproof membrane layer, so that the waterproof membrane is prevented from being scratched. Utilize flexible soil and water protection blanket of open 3D, have abundant three-dimensional structure, high mesh porosity has good drainage effect. This structure bulk strength is high, toughness is big, and the large tracts of land of being convenient for is laid, plays the function of isolation water and drainage, is fit for engineering fields such as ground and retaining wall and uses on a large scale.
Description
Technical Field
The utility model relates to a road bed engineering technical field especially relates to a road bed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall.
Background
The roadbed engineering structure comprises a foundation and a retaining wall, the foundation soil is softened after being soaked by rainwater or underground water, the bearing capacity of the foundation can be reduced, therefore, a drainage structure needs to be laid during foundation construction, the disclosed TENAX three-dimensional composite drainage net structure is a novel geosynthetic material, needle punched non-woven geotextiles are stuck on two sides of the structure, a thick vertical rib is arranged in the middle of the structure, the foundation is reinforced by underground water for discharging roads, and the structure only plays roles in isolating soil sand and draining, and cannot play roles in isolating water and water proofing. The retaining wall is a structure for supporting roadbed filling soil or hillside soil and preventing the filling soil or the soil from deforming and destabilizing, and the road mainly plays a role in supporting embankment, cutting, tunnel portal, bridge abutment, river bank protection and the like and is divided into a cutting wall, a embankment wall, a road shoulder wall and a hillside wall according to the arranged positions; the strength and firmness of the structure may also be reduced after external water penetrates into the retaining wall.
In conclusion, no composite material capable of preventing water and draining water is produced in the market for the roadbed engineering structure.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a roadbed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall, the utility model discloses a following technical scheme:
as a first aspect of the present invention, there is provided a composite waterproof drainage layer for roadbed engineering structure, comprising a filter layer formed by polypropylene geotextile arranged in sequence, a drainage layer formed by an inner core layer of nylon net, a polyester geotextile layer, a waterproof film layer and a polyester geotextile layer.
Preferably, the polypropylene geotextile layer is made of polypropylene filament needle-punched geotextile; the polyester geotextile one layer and the polyester geotextile two layers are made of polyester filament geotextile.
Preferably, all the layers of the composite waterproof drainage layer are connected by hot melting or bonded by hot melt adhesive.
The waterproof layer is formed by the polyester filament geotextile layer, the waterproof film layer and the polyester filament geotextile layer, and the two layers of polyester filament geotextile play a role in buffering and protection by utilizing the waterproof performance of the waterproof film layer, so that the waterproof film is prevented from being scratched.
The polypropylene filament needle-punched geotextile positioned on the outermost layer has good mechanical property, is stretch-resistant, tear-resistant and puncture-resistant, has excellent water permeability, is arranged on the outermost layer, is convenient for permeating water and filtering gravel on the one hand, and plays a role in protection simultaneously.
Preferably, the nylon net inner core in the drainage layer is formed in one step by dry drawing of polyamide PA, and the texture is loose.
More preferably, the drainage layer adopts an open 3D flexible water and soil protection blanket which has a rich three-dimensional structure, the thickness is 6-20mm, the mesh porosity is more than or equal to 95%, and the drainage effect is good.
Preferably, the material of the waterproof film layer is selected from a polyethylene film, a thermoplastic polyurethane film, a polyurethane film and a polyvinyl chloride film.
Preferably, the roadbed engineering comprises a foundation structure and a retaining wall.
As a second aspect of the present invention, there is provided a foundation structure, comprising the waterproof composite drainage layer, which is sequentially composed of the upper fine aggregate concrete, the waterproof composite drainage layer, the lower fine aggregate concrete and the foundation soil.
As a third aspect of the present invention, there is provided a retaining wall, comprising the composite waterproof drainage layer. The soil-retaining wall sequentially comprises a protective layer or a lawn, a composite waterproof drainage layer, a retaining wall body and a filling layer from outside to inside.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a ground and retaining wall are with structure of compound waterproof drainage layer, outermost polypropylene filament acupuncture geotechnological cloth layer constitutes the filter layer, its tensile strength is higher than polyester geotechnological cloth, play the effect of protection and filtration gravel, utilize the waterproof performance of polyethylene film, polyethylene film outside two sides is polyester filament geotechnological cloth, better shock-absorbing capacity has, avoid the polyethylene film to be lacerated, utilize the flexible soil and water protection blanket of open 3D, abundant three dimensional structure has, high mesh porosity, good drainage effect has. This structure bulk strength is high, toughness is big, and the large tracts of land of being convenient for is laid, plays the function of isolation water and drainage, is fit for engineering fields such as ground and retaining wall and uses on a large scale.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural view of the composite waterproof drainage layer for roadbed engineering provided by the utility model;
FIG. 2 is a schematic view of the foundation structure provided by the present invention;
fig. 3 is the utility model provides a retaining wall structure schematic diagram.
The concrete-filled composite waterproof drainage layer comprises a filter layer 1, a drainage layer 2, a polyester filament geotextile layer 3, a polyethylene film layer 4, a polyester filament geotextile layer 5, fine aggregate concrete on the upper layer 6, a composite waterproof drainage layer 7, fine aggregate concrete on the lower layer 8, foundation soil 9, a protective layer 10, a retaining wall body 11 and a filling layer 12.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example 1: composite waterproof drainage layer for roadbed engineering structure
As shown in fig. 1, the waterproof cloth comprises a filter layer 1 composed of a polypropylene filament needled geotextile layer, a drainage layer 2 composed of a nylon mesh inner core layer, a polyester filament geotextile layer 3, a Polyethylene (PE) film layer 4 and a polyester filament geotextile layer 5 which are sequentially arranged, wherein the layers are bonded by hot melt connection or hot melt adhesive, the polyester filament geotextile layer, the PE film and the polyester filament geotextile layer form a waterproof layer, and by utilizing the waterproof performance of the PE film, the two layers of polyester filament geotextile play a role in buffering and protecting the PE film to prevent the PE film from being scratched; the polypropylene filament needle-punched geotextile monofilament strength positioned on the outermost layer exceeds 3.5g/D, has high strength and modulus, has good mechanical property, is tensile, tear-resistant and puncture-resistant, has tensile strength higher than that of polyester geotextile, has excellent water permeability, is arranged on the outermost layer, is convenient for permeating water and filtering gravel on the one hand, and plays a protective role simultaneously.
As a typical example, the inner core of the nylon net in the drainage layer is formed in one step by dry drawing with polyamide PA, and the texture is loose.
More preferably, the drainage layer adopts an open 3D flexible water and soil protection blanket which has a rich three-dimensional structure, the thickness is 6-20mm, the mesh porosity is more than or equal to 95%, and the drainage effect is good.
As a typical example, a polyethylene film (PE film) may be a waterproof film of other components, such as a thermoplastic polyurethane film (TPU film), a polyurethane film (PU film), a polyvinyl chloride film (PVC film).
Example 2: foundation structure
A foundation structure comprises the composite waterproof and drainage layer, as shown in figure 2, which comprises upper fine aggregate concrete, the composite waterproof and drainage layer 7 provided by embodiment 1, lower fine aggregate concrete 8 and foundation soil 9 from top to bottom in sequence.
The slope of compound waterproof drainage blanket 7 sets up, and inclination is decided according to the road surface angle, extends the drainage blanket 2 of compound waterproof drainage blanket 7 in the least significant end, can extend to ground or river in, with water extremely least significant.
Example 3: retaining wall
A retaining wall, as shown in figure 3, comprising the composite waterproof and drainage layer. The water-proof and water-proof composite soil-retaining wall sequentially comprises a protective layer 10 or a lawn, a composite water-proof and water-draining layer 7, a soil-retaining wall body 11 and a soil filling layer 12 from outside to inside.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a road bed engineering structure is with compound waterproof drainage blanket which characterized in that, includes the filter layer that polypropylene geotechnological cloth constitutes, the drainage blanket that nylon net inner core layer constitutes, polyester geotechnological cloth one deck, waterproof rete and the two layers of polyester geotechnological cloth of polypropylene geotechnological cloth of arranging in proper order.
2. The composite waterproof and drainage layer for the roadbed engineering structure as claimed in claim 1, wherein the polypropylene geotextile layer is made of polypropylene filament needle-punched geotextile; the polyester geotextile one layer and the polyester geotextile two layers are made of polyester filament geotextile.
3. The roadbed engineering structure composite waterproof drainage layer of claim 1, wherein the layers of the composite waterproof drainage layer are connected by hot melting or are bonded by hot melt adhesive.
4. The composite waterproof drainage layer for the roadbed engineering structure as claimed in claim 1, wherein the inner core of the nylon net in the drainage layer is made by one-step molding by dry drawing of polyamide.
5. The composite waterproof drainage layer for the roadbed engineering structure as claimed in claim 1, wherein the drainage layer is an open 3D flexible water and soil protection blanket.
6. The composite waterproof and drainage layer for the roadbed engineering structure as claimed in claim 5, wherein the thickness of the open 3D flexible water and soil protection blanket is 6-20mm, and the porosity of the meshes is greater than or equal to 95%.
7. The composite waterproof and drainage layer for the roadbed engineering structure, according to claim 1, wherein the waterproof membrane layer is made of a material selected from the group consisting of polyethylene membrane, thermoplastic polyurethane membrane, polyurethane film and polyvinyl chloride membrane.
8. The composite waterproof and drainage layer for the roadbed engineering structure as claimed in claim 1, wherein the roadbed engineering structure comprises a foundation and a retaining wall.
9. A foundation structure, characterized in that, the composite waterproof and drainage layer as claimed in any one of claims 1 to 8 comprises an upper layer of fine aggregate concrete, a composite waterproof and drainage layer, a lower layer of fine aggregate concrete and a foundation soil from top to bottom.
10. A retaining wall comprising the composite waterproof drainage layer as claimed in any one of claims 1 to 8, and comprising a protective layer or lawn, the composite waterproof drainage layer, a retaining wall body and a filling layer in this order from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220648680.8U CN217651539U (en) | 2022-03-23 | 2022-03-23 | Roadbed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220648680.8U CN217651539U (en) | 2022-03-23 | 2022-03-23 | Roadbed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall |
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| Publication Number | Publication Date |
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| CN217651539U true CN217651539U (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220648680.8U Active CN217651539U (en) | 2022-03-23 | 2022-03-23 | Roadbed engineering structure is with compound waterproof drainage layer, foundation structure and retaining wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117107792A (en) * | 2023-10-20 | 2023-11-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Combined drainage slope protection system for deep-excavation square expansion soil canal slope and integrated construction method |
-
2022
- 2022-03-23 CN CN202220648680.8U patent/CN217651539U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117107792A (en) * | 2023-10-20 | 2023-11-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Combined drainage slope protection system for deep-excavation square expansion soil canal slope and integrated construction method |
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