CN113832948A - Composite cement soil mattress layer structure for hydraulic engineering composite foundation - Google Patents
Composite cement soil mattress layer structure for hydraulic engineering composite foundation Download PDFInfo
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- CN113832948A CN113832948A CN202111309779.1A CN202111309779A CN113832948A CN 113832948 A CN113832948 A CN 113832948A CN 202111309779 A CN202111309779 A CN 202111309779A CN 113832948 A CN113832948 A CN 113832948A
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- layer
- mattress
- concrete
- waterproof
- fixedly connected
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- 239000004568 cement Substances 0.000 title claims abstract description 40
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 239000002689 soil Substances 0.000 title claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 229920006262 high density polyethylene film Polymers 0.000 claims abstract description 7
- 239000004576 sand Substances 0.000 claims description 24
- 239000004746 geotextile Substances 0.000 claims description 20
- 239000004744 fabric Substances 0.000 abstract description 18
- 230000002265 prevention Effects 0.000 abstract description 5
- 238000005728 strengthening Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 3
- 229920001903 high density polyethylene Polymers 0.000 abstract description 2
- 239000004700 high-density polyethylene Substances 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 7
- 230000003712 anti-aging effect Effects 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0051—Including fibers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention relates to the technical field of hydraulic engineering, in particular to a composite cement soil mattress layer structure for a hydraulic engineering composite foundation. The invention has the advantages that: the waterproof board, the embedded board and the geotechnical cloth layer are arranged in a matched mode, the contact area of the waterproof board and the geotechnical cloth layer through the embedded board is larger, the connection compactness is improved, the waterproof and anti-seepage effects of the geotechnical cloth layer and the waterproof board are improved, and meanwhile, HDPE (high-density polyethylene) film layers, namely concrete anti-seepage layers, are arranged above the concrete layer and below the geotechnical cloth layer, so that the waterproof and anti-seepage performance is good, the anti-seepage performance of the mattress layer structure can be further improved, the mattress layer structure can be better applied to the field of hydraulic engineering, and the mattress layer structure has stronger waterproof and anti-seepage performance; this mattress structure has adopted composite design, abandons to use metalling design in the past, and the top is waterproof prevention of seepage design, and the below is concrete layer and cement layer design, and is comparatively thick and solid to concrete layer inside is provided with the fibre web of strengthening intensity, and this mattress structure's bearing capacity is strong, is difficult for taking place great settlement.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to a composite cement soil mattress layer structure for a hydraulic engineering composite foundation.
Background
A mattress layer is a method for solving the problem of uneven foundation in a CFG composite foundation. When building is on rock foundation and clay foundation, it adopts bedding layer (graded sand stone) on the rock foundation.
The mattress layer is not only used for CFG stake, also is used for gravel pile, tubular pile etc. to form composite foundation, guarantee the combined action of stake and stake soil. Most of the mattress layers which are common at present are broken stone layers, and the mattress layers formed by broken stones cannot meet the requirements of impermeability and water resistance in the field of hydraulic engineering.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a composite cement soil mattress layer structure for a hydraulic engineering composite foundation.
The purpose of the invention is realized by the following technical scheme: a composite cement soil mattress layer structure for a hydraulic engineering composite foundation comprises a mattress layer, wherein the uppermost layer of the mattress layer is a fine sand layer, the bottom of the fine sand layer is fixedly connected with a waterproof board, the bottom of the waterproof board is fixedly connected with a plurality of panels, and the bottoms of the waterproof board and the panels are fixedly connected with a geotechnical cloth layer;
the geotextile layer is characterized in that a concrete impermeable layer is fixedly connected to the bottom of the geotextile layer, a concrete layer is fixedly connected to the bottom of the concrete impermeable layer, a fiber net is fixedly connected to the inside of the concrete layer, and a cement layer is fixedly connected to the bottom of the concrete layer.
Optionally, the mattress layer is integrally composed of a fine sand layer, a waterproof board, an embedded board, a geotextile layer, a concrete impermeable layer, a concrete layer and a cement layer.
Optionally, the thickness of the fine sand layer is greater than that of the waterproof plate, and the waterproof plate and the panel are of an integrated structure.
Optionally, the panel is embedded into the top of the geotextile layer, the waterproof board is larger in contact area with the geotextile layer through the panel, the connection compactness is improved, and the waterproof and anti-seepage effects of the geotextile layer and the waterproof board are improved, the concrete anti-seepage layer is specifically an HDPE film layer, the waterproof and anti-seepage performance is good, the anti-seepage performance of the mattress layer structure can be further improved, and the mattress layer structure is crack-resistant and anti-aging and has long service life.
Optionally, the thickness of the concrete layer is greater than that of the cement layer, and the vertical section of the concrete impermeable layer on the top of the concrete layer is of a rectangular structure.
Optionally, the cement layer is located the bottommost portion of mattress pad layer, and this mattress pad structure has adopted composite design, abandons to use the metalling design in the past, and the top is waterproof prevention of seepage design, and the below is concrete layer and cement layer design, and is comparatively thick and solid to the inside fibre web that is provided with the strengthening intensity of concrete layer, thereby this mattress pad layer structure's bearing capacity is strong, is difficult for taking place great settlement.
The invention has the following advantages:
1. the composite cement soil mattress pad layer structure for the hydraulic engineering composite foundation is characterized in that the uppermost layer of the mattress pad layer is a fine sand layer, the bottom of the fine sand layer is fixedly connected with a waterproof board, the bottom of the waterproof board is fixedly connected with a plurality of embedded plates, the bottoms of the waterproof board and the embedded plates are fixedly connected with a geotechnical cloth layer, the bottom of the geotechnical cloth layer is fixedly connected with a concrete impermeable layer, the bottom of the concrete impermeable layer is fixedly connected with a concrete layer, the inner part of the concrete layer is fixedly connected with a fiber net, and the bottom of the concrete layer is fixedly connected with a cement layer. And simultaneously, HDPE (high-density polyethylene) film layers, namely concrete impermeable layers, are arranged above the concrete layer and below the geotechnical cloth layer, so that the waterproof and impermeable performances are good, the impermeable performances of the mattress layer structure can be further improved, the mattress layer structure is anti-cracking and anti-aging, the service life is long, the mattress layer structure can be better utilized in the field of hydraulic engineering, and the mattress layer structure has stronger waterproof and impermeable performances.
2. This composite cement soil mattress pad layer structure for hydraulic engineering composite foundation, the superiors of mattress pad layer are fine sand layer, the bottom fixedly connected with waterproof board of fine sand layer, the bottom fixedly connected with a plurality of panel of waterproof board, the bottom fixedly connected with geotechnological cloth layer of waterproof board and panel, the bottom fixedly connected with concrete barrier layer on geotechnological cloth layer, the bottom fixedly connected with concrete layer of concrete barrier layer, concrete layer's inside fixedly connected with fibre web, concrete layer's bottom fixedly connected with cement layer, this mattress pad structure has adopted composite design, give up using the design of metalling in the past, the top is waterproof prevention of seepage design, the below is concrete layer and cement layer design, it is comparatively thick and real, and the inside fibre web of strengthening intensity that is provided with of concrete layer, thereby this mattress pad layer structure's bearing capacity is strong, be difficult for taking place great settlement.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
fig. 2 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention.
In the figure: 1-mattress layer, 2-fine sand layer, 3-waterproof board, 4-panel, 5-geotextile layer, 6-concrete impermeable layer, 7-concrete layer, 8-fiber net and 9-cement layer.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1-2, a composite cement soil mattress layer structure for a composite foundation of a hydraulic engineering comprises a mattress layer 1, wherein the uppermost layer of the mattress layer 1 is a fine sand layer 2, the bottom of the fine sand layer 2 is fixedly connected with a waterproof board 3, the bottom of the waterproof board 3 is fixedly connected with a plurality of panels 4, and the bottoms of the waterproof board 3 and the panels 4 are fixedly connected with a geotextile layer 5;
the bottom fixedly connected with concrete barrier layer 6 of geotechnological cloth layer 5, the bottom fixedly connected with concrete layer 7 of concrete barrier layer 6, the inside fixedly connected with fibre web 8 of concrete layer 7, the bottom fixedly connected with cement layer 9 of concrete layer 7.
As a preferred technical scheme of the invention: the mattress layer 1 integrally comprises a fine sand layer 2, a waterproof board 3, an insert board 4, a geotextile layer 5, a concrete impermeable layer 6, a concrete layer 7 and a cement layer 9, wherein the thickness of the fine sand layer 2 is larger than that of the waterproof board 3, the waterproof board 3 and the insert board 4 are of an integrated structure, the insert board 4 is embedded into the top of the geotextile layer 5, the waterproof board 3 is larger in contact area with the geotextile layer 5 through the insert board 4, the connection compactness is improved, and the waterproof and impermeable effects of the geotextile layer 5 and the waterproof board 3 are improved;
the concrete impermeable layer 6 is a HDPE film layer, has good waterproof and impermeable performance, can further improve the impermeable performance of the mattress layer structure, is anti-cracking and anti-aging, and has long service life;
the thickness on concrete layer 7 is greater than the thickness on cement layer 9, the perpendicular section of the concrete barrier layer 6 at concrete layer 7 top is the rectangle structure, cement layer 9 is located mattress pad layer 1's bottommost, this mattress pad structure has adopted composite design, abandon and use the design of metalling in the past, the top is waterproof prevention of seepage design, the below is concrete layer 7 and the design of cement layer 9, it is comparatively thick and solid, and concrete layer 7 inside is provided with the fibre web 8 of strengthening intensity, thereby the bearing capacity of this mattress pad layer structure is strong, difficult emergence great settlement.
The working process of the invention is as follows:
s1, paving a cement layer 9 in the foundation pit, paving a concrete layer 7 with a fiber net 8 on the top of the cement layer 9, and paving a concrete impermeable layer 6, namely an HDPE film layer, on the top of the concrete layer 7;
s2, laying a plurality of geotextile layers 5 on the top of the concrete impermeable layer 6, covering the geotextile layers with waterproof boards 3 matched with the panels 4, and embedding the panels 4 into the top of the geotextile layers 5;
s3, laying a fine sand layer 2 on top of the waterproof board 2, and compacting several times.
To sum up, when the composite cement soil mattress pad layer structure for the hydraulic engineering composite foundation is used, the uppermost layer of the mattress pad layer 1 is a fine sand layer 2, the bottom of the fine sand layer 2 is fixedly connected with a waterproof board 3, the bottom of the waterproof board 3 is fixedly connected with a plurality of panels 4, the bottoms of the waterproof board 3 and the panels 4 are fixedly connected with a geotechnical cloth layer 5, the bottom of the geotechnical cloth layer 5 is fixedly connected with a concrete impermeable layer 6, the bottom of the concrete impermeable layer 6 is fixedly connected with a concrete layer 7, the inner part of the concrete layer 7 is fixedly connected with a fiber net 8, the bottom of the concrete layer 7 is fixedly connected with a cement layer 9, the mattress pad structure adopts a composite design, the prior gravel layer design is abandoned, the top layer is set to be the fine sand layer 2, the texture is dense, water leakage is difficult, and the contact area of the waterproof board 3 and the geotechnical cloth layer 5 is larger through the panels 4, the connection compactness is improved, the waterproof and anti-seepage effects of the geotechnical cloth layer 5 and the waterproof board 3 are improved, and the HDPE films, namely the concrete anti-seepage layer 6, are arranged above the concrete layer 7 and below the geotechnical cloth layer 5, so that the waterproof and anti-seepage performance is good, the anti-seepage performance of the mattress layer structure can be further improved, the mattress layer structure is anti-cracking and anti-aging, the service life is long, and the mattress layer structure can be better applied to the field of hydraulic engineering and has stronger waterproof and anti-seepage performance; mattress layer 1's the superiors are fine sand layer 2, the bottom fixedly connected with waterproof board 3 of fine sand layer 2, the bottom fixedly connected with a plurality of panel 4 of waterproof board 3, the bottom fixedly connected with geotechnological cloth layer 5 of waterproof board 3 and panel 4, the bottom fixedly connected with concrete barrier layer 6 of geotechnological cloth layer 5, the bottom fixedly connected with concrete layer 7 of concrete barrier layer 6, the inside fixedly connected with fibre net 8 of concrete layer 7, the bottom fixedly connected with cement layer 9 of concrete layer 7, this mattress structure has adopted composite design, give up using the design of metalling in the past, the top is waterproof prevention of seepage design, the below is concrete layer 7 and cement layer 9 design, it is comparatively thick and real, and concrete layer 7 inside is provided with the fibre net 8 of strengthening intensity, thereby the bearing capacity of this mattress structure is strong, difficult the great settlement that takes place.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a composite cement soil mattress layer structure for hydraulic engineering composite foundation which characterized in that: the waterproof mattress comprises a mattress layer (1), wherein the uppermost layer of the mattress layer (1) is a fine sand layer (2), the bottom of the fine sand layer (2) is fixedly connected with a waterproof board (3), the bottom of the waterproof board (3) is fixedly connected with a plurality of panels (4), and the bottoms of the waterproof board (3) and the panels (4) are fixedly connected with a geotextile layer (5);
the geotextile layer is characterized in that a concrete impermeable layer (6) is fixedly connected to the bottom of the geotextile layer (5), a concrete layer (7) is fixedly connected to the bottom of the concrete impermeable layer (6), a fiber net (8) is fixedly connected to the inside of the concrete layer (7), and a cement layer (9) is fixedly connected to the bottom of the concrete layer (7).
2. The composite cement soil mattress layer structure for the hydraulic engineering composite foundation according to claim 1, characterized in that: the mattress layer (1) integrally comprises a fine sand layer (2), a waterproof board (3), a panel (4), a geotextile layer (5), a concrete impermeable layer (6), a concrete layer (7) and a cement layer (9).
3. The composite cement soil mattress layer structure for the hydraulic engineering composite foundation according to claim 1, characterized in that: the thickness of the fine sand layer (2) is larger than that of the waterproof plate (3), and the waterproof plate (3) and the panel (4) are of an integral structure.
4. The composite cement soil mattress layer structure for the hydraulic engineering composite foundation according to claim 1, characterized in that: the panel (4) is embedded into the top of the geotextile layer (5), and the concrete impermeable layer (6) is specifically an HDPE film layer.
5. The composite cement soil mattress layer structure for the hydraulic engineering composite foundation according to claim 1, characterized in that: the thickness of the concrete layer (7) is larger than that of the cement layer (9), and the vertical section of the concrete impermeable layer (6) at the top of the concrete layer (7) is of a rectangular structure.
6. The composite cement soil mattress layer structure for the hydraulic engineering composite foundation according to claim 1, characterized in that: the cement layer (9) is positioned at the bottommost part of the mattress layer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309779.1A CN113832948A (en) | 2021-11-07 | 2021-11-07 | Composite cement soil mattress layer structure for hydraulic engineering composite foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309779.1A CN113832948A (en) | 2021-11-07 | 2021-11-07 | Composite cement soil mattress layer structure for hydraulic engineering composite foundation |
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| Publication Number | Publication Date |
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| CN113832948A true CN113832948A (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111309779.1A Pending CN113832948A (en) | 2021-11-07 | 2021-11-07 | Composite cement soil mattress layer structure for hydraulic engineering composite foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115233622A (en) * | 2022-07-04 | 2022-10-25 | 山东建通土工材料有限公司 | Anti-puncture geotechnical coating |
-
2021
- 2021-11-07 CN CN202111309779.1A patent/CN113832948A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115233622A (en) * | 2022-07-04 | 2022-10-25 | 山东建通土工材料有限公司 | Anti-puncture geotechnical coating |
| CN115233622B (en) * | 2022-07-04 | 2024-04-26 | 山东建通土工材料有限公司 | Puncture-resistant geotechnical coating |
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Application publication date: 20211224 |