CN212316949U - Supporting construction of side slope - Google Patents
Supporting construction of side slope Download PDFInfo
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- CN212316949U CN212316949U CN201922065735.3U CN201922065735U CN212316949U CN 212316949 U CN212316949 U CN 212316949U CN 201922065735 U CN201922065735 U CN 201922065735U CN 212316949 U CN212316949 U CN 212316949U
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Abstract
The utility model provides a supporting construction of side slope, include: the lower ends of the anti-slide piles are embedded in the roadbed below the slope body of the side slope, and the anti-slide piles are arranged at intervals along the extension direction of the slope toe line of the side slope; the geotechnical grid chamber is embedded in a slope body between adjacent anti-slide piles, and one end of the geotechnical grid chamber extends towards the slope body far away from the slope surface of the side slope. This supporting construction of side slope is mainly applied to soil property cutting high slope highway section, adopts the structure that friction pile and geotechnological check room combined together, and the side slope stability can be ensured to the friction pile, and geotechnological check room is buried underground in the slope body between the adjacent friction pile, plays the effect of reinforced earth gravity type barricade, can make domatic afforestation between the friction pile simultaneously. The utility model effectively combines the two structures, and overcomes the technical defect that the pure masonry retaining structure can not be greened; the strength of the geocell can meet the requirements of side slope support, and the cost is low.
Description
Technical Field
The utility model relates to a geotechnical engineering side slope reinforcement technical field, in particular to supporting construction of side slope.
Background
The mountainous area traffic construction field often meets soil cutting high slope road sections, the landforms of the sections are steep, the height of excavation slopes is large, and the sections are easy to lose and stably slide. In order to ensure the stability of the side slope, a pile plate wall or a pile-to-pile wall retaining structure is often arranged for supporting. The combined retaining structure of the pile plate wall comprises the anti-slide piles and the retaining plates, and the combined retaining structure of the inter-pile wall comprises the anti-slide piles and the inter-pile gravity retaining wall. The above-mentioned conventional retaining structure has some disadvantages: (1) the pile plate wall and the inter-pile wall are both pure masonry retaining structures, cannot be greened, have large contrast with the surrounding natural environment, and cannot meet the requirements of green ecology; (2) the material of retaining plate is reinforced concrete, and the material of retaining wall between the stake is plain concrete, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a supporting construction of side slope to solve among the prior art traditional pile slab wall structure of soil property cutting high slope highway section and can't satisfy green ecological requirement and the higher technical problem of cost.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a supporting construction of side slope, include: the lower ends of the anti-slide piles are embedded in the roadbed below the slope body of the side slope, and the anti-slide piles are arranged at intervals along the extension direction of the slope toe line of the side slope; the geocell is buried in the slope body between the adjacent anti-slide piles, and one end of the geocell extends towards the slope body far away from the slope surface of the slope.
Furthermore, the number of the geocells is multiple, and the geocells are embedded at intervals along the slope surface extending direction of the side slope.
Further, the longitudinal distance between the adjacent geocells is 0.5-0.8 m.
Further, the geocell is horizontally embedded in the slope body.
Further, the height of the slide resistant piles buried outside the roadbed is represented as L1, and the value thereof is less than or equal to 8 m.
Further, the cross section of the slide-resistant pile is square, the length of the square is represented by h and is 2.25-3.0 m, the width of the square is represented by d and is 2.0-2.75 m; and/or
The distance between the centroids of the adjacent anti-slide piles is 5-8 m.
Furthermore, the supporting structure of side slope still including lay in plant living hanging net on the domatic of side slope, plant living hanging net is fixed in on the domatic.
Further, the supporting construction of side slope includes first connecting piece, first connecting piece will it is fixed in to plant living hanging net on domatic, just first connecting piece will geocell is close to domatic one end is fixed in the slope.
Further, the supporting structure of side slope includes the second connecting piece, the second connecting piece will the geocell is kept away from the one end on domatic is fixed in the sloping.
Furthermore, the lengths of the first connecting piece and the second connecting piece are both greater than the height of the geocell, and the tail ends of the first connecting piece and the second connecting piece are positioned between the adjacent geocells.
Furthermore, the plant-growing hanging net is a galvanized iron wire net.
The utility model provides a supporting construction of side slope mainly is applied to soil property cutting high slope highway section, adopts the structure that friction pile and geotechnological check room combined together, and the side slope stability can be ensured to the friction pile, and the slope body between adjacent friction pile is buried underground in geotechnological check room, plays the effect of reinforced earth gravity type barricade, can make domatic afforestation between the friction pile simultaneously. The utility model effectively combines the two structures, and overcomes the technical defect that the pure masonry retaining structure can not be greened; the intensity of geotechnique's check room can reach the requirement of side slope support, and compares with retaining wall that retaining wall board, wall combination between the stake retaining structure that among the prior art stake wall combination retaining structure used, cost reduction.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a supporting structure of a side slope according to an embodiment of the present invention;
fig. 2 is a schematic longitudinal sectional structure view of a supporting structure of a side slope according to an embodiment of the present invention;
fig. 3 is a schematic view of a connection relationship between the geocell and the plant-growing hanging net in the supporting structure of the side slope according to the embodiment of the present invention;
fig. 4 is a schematic view of the arrangement of the drainage holes in the supporting structure of the side slope provided by the embodiment of the present invention.
Description of reference numerals:
10. side slope; 11. a slope body; 12. a slope surface; 13. a drain hole; 20. a roadbed surface; 30. anti-slide piles; 40. a geocell; 41. a first connecting member; 42. a second connecting member; 50. and (4) planting and hanging the net.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The descriptions of "first," "second," etc. in the present application are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number or order of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Referring to fig. 1 and 2, an embodiment of the present application provides a supporting structure for a side slope, including: the lower ends of the anti-slide piles 30 are embedded in the roadbed below the slope body 11 of the side slope 10, and the anti-slide piles 30 are arranged at intervals along the extension direction of the toe line of the side slope 10; the geocell 40 is embedded in the slope body 11 between the adjacent anti-slide piles 30, and one end of the geocell 40 extends into the slope body 11 far away from the slope surface 12 of the side slope. The supporting structure of the side slope is used for the soil cutting high side slope section. The supporting construction of slope 10 of this application embodiment can solve the unable higher technical problem that satisfies green ecological requirement and cost of traditional retaining structure on soil property cutting high slope highway section.
It should be understood that the slope 10 in the present embodiment is a general term for the slope body 11 and the slope surface 12. A part of the anti-slide pile 30 is buried in the roadbed below the slope body 11, namely, in the stable stratum and is positioned below the roadbed surface 20; the other part is positioned above the roadbed. A plurality of the slide resistant piles 30 are generally arranged along the direction in which the toe line of the side slope 10 extends. In order to enhance the stabilization of the side slope 10 by the slide resistant piles 30, a part of the slide resistant piles 30, which are generally located above the roadbed, is buried in the slope body 11. Specifically, the slide-resistant pile 30 is constructed by cast-in-place construction of reinforced concrete with the size of a concrete structure not lower than C35, and the size of the concrete structure is determined by checking calculation.
It will be appreciated that the geocell 40 is embedded within the interior of the slope 11, and in the present embodiment the geocell 40 is located entirely within the slope 11. One end of the geocell 40 is close to the slope 12, and the other end extends towards the interior of the slope 11, i.e. away from the slope 12, and forms an angle with the slope 12. The number of the geocells 40 can be 1 or more, and a plurality of the geocells 40 are layered and laid inside the slope body 11. The geocell 40 acts as a reinforced retaining wall. Specifically, the geocell 40 is made of plastic sheets, and steel wires, fibers and other ribs with low elongation are added into the plastic sheets and connected through inserts, fasteners and the like. The geocell 40 is a honeycomb-shaped three-dimensional grid after being unfolded. The height of the geocell 40 can be different according to the actual situation of the project. According to the height, the general geocell can be divided into specifications of 5cm, 8cm, 10cm, 15cm, 20cm and the like.
The supporting construction of side slope 10 that this application embodiment provided mainly is applied to soil property cutting high slope highway section, adopts the structure that slide resistant pile 30 and geotechnological check room 40 combined together, and slide resistant pile 30 can ensure that side slope 10 is stable, and geotechnological check room 40 is buried underground in the slope body 11 between the adjacent slide resistant pile 30, plays the effect of reinforced earth retaining wall, can make domatic 12 between the slide resistant pile 30 afforest simultaneously. The application effectively combines the two structures, and overcomes the technical defect that a pure masonry retaining structure cannot be greened; the strength of the geocell 40 can meet the requirement of supporting the side slope 10, and compared with the retaining wall used by the retaining plate used by the pile-plate wall combined retaining structure and the retaining wall used by the pile-space wall combined retaining structure in the prior art, the cost is reduced. The flexible geocell 40 structure is used for replacing a rigid pile-to-pile plate, a large amount of masonry structures are reduced, the soil arch effect formed by the slide-resistant piles 30 is fully utilized, and the economic benefit is remarkable.
In some embodiments, the number of geocells 40 is multiple, and the multiple geocells 40 are embedded at intervals along the extension direction of the slope surface 12 of the slope 10. A plurality of geocells 40 are embedded in layers in the slope 11. In the extending direction of the slope surface 12, the plurality of geocell 40 are arranged at intervals, that is, a certain distance is reserved between the geocell 40 on the slope surface 12, so that on one hand, the integral stability of the side slope 10 between the slide-resistant piles 30 is improved, and on the other hand, the purpose of greening can be realized on the slope surface 12 between the geocell 40. Further, the longitudinal distance between adjacent geocells 40 is 0.5m to 0.8 m. The longitudinal distance between adjacent geocells 40 is too large, the reinforcing effect on the side slope 10 is not enough, and the distance is too small, so that the embedding quantity of the geocells 40 is increased, the construction difficulty and the construction cost are increased, and the greening of the slope surface 12 is affected. Specifically, the longitudinal distance between the geocells 40 can be determined according to the specification of the geocells 40, the filling condition, the climate condition, experimental parameters and the like. The length of the geocell 40 decreases to form a slope in a direction extending up the slope 12. It will be appreciated that a plurality of geocells 40 are laid horizontally within the slope 11. The geocell 40 can provide the best enhancement of the stability of the slope 10 when laid horizontally.
In some embodiments, the height at which the friction piles 30 are buried in the subgrade is denoted as L2, the value of which is determined from the construction calculations. The height of the slide resistant piles 30 buried outside the roadbed is represented as L1, which is a value of 8m or less. It is understood that the part of the slide pile 30 buried in the interior of the roadbed serves to enhance the stability of the slide pile 30, and the excessive height thereof causes inconvenience in construction, and the insufficient height thereof causes poor stability of the slide pile 30 to the side slope 10. In addition, the cross-section of the slide resistant pile 30 is square. The length of the square is represented by h, which is a value of 2.25m to 3.0 m. The width of the square is represented by d, and is 2.0m to 2.75 m. The distance between the centroids of the adjacent slide-resistant piles 30 is 5m to 8 m. That is, the distance between the centers of the projections of the adjacent slide piles 30 on the road base surface 20 is 5m to 8m, respectively. Too large a distance between adjacent anti-slide piles 30 results in too large an area of the slope 12 between the anti-slide piles 30, thereby weakening the stabilizing effect on the side slope 10; too small not only puts a great stress on the construction, but also increases the cost.
In some embodiments, the supporting structure of the side slope further includes a plant-growing net 50 laid on the slope surface 12 of the side slope 10, and the plant-growing net 50 is fixed on the slope surface 12. It can be understood that the plant-growing net 50 adopted on the slope surface 12 can be better used as a green plant growth foundation, the root system is protected to be stable, the green protection of the side slope 10 is realized, and the technical defect that a pure masonry retaining structure does not have green is overcome. Specifically, the concrete sprayer is used for spraying the mixture of the uniformly mixed grass seeds, planting soil, cement and other base materials onto the plant growth hanging net 50 according to the designed thickness, and the mechanical reinforcement of the vegetation root system is used for achieving the purposes of stabilizing the side slope 10, greening the environment and improving the ecology. Further, the plant-growing hanging net 50 is a galvanized wire net.
Further, referring to fig. 3, the supporting structure of the side slope includes a first connecting member 41, the first connecting member 41 fixes the plant-growing hanging net 50 on the slope surface 12, and the first connecting member 41 fixes one end of the geocell 40 close to the slope surface 12 in the slope body 11. That is, the first connectors 41 fix the vegetation suspended net 50 and the geocell 40, respectively. Specifically, the first connecting member 41 fixes the plant-growing net 50 on the slope surface 12, then bends into the slope body 11, and fixes one end of the geocell 40 after bending into the slope body 11. The first connecting piece 41 is designed ingeniously, and the plant-growing hanging net 50 and the geocell 40 are fixed at the same time, so that the construction process is simplified, and the cost is reduced; the first connecting member 41 connects the vegetation suspended net 50, the geocell 40 and the soil between the piles into a whole, so that the effect similar to that of a gravity retaining wall is realized, and the overall stability of the side slope 10 is further improved.
Further, the length of the first connectors 41 is greater than the height of the geocells 40, and the ends of the first connectors 41 are located between adjacent geocells 40. Specifically, the length of the first connecting piece 41 is 2 to 4 times the height of the geocell 40, so that the first connecting piece 41 can fix the end, close to the slope 12, of the geocell 40 while fixing the plant growth hanging net 50 on the slope 12. It will be appreciated that the ends of the first connectors 41 are located between adjacent geocells 40 to avoid the first connectors 41 damaging the geocell 40 below, while ensuring that the end of each geocell 40 adjacent the sloping surface 12 is secured by the corresponding first connector 41, resulting in better stability of the geocell 40. The longitudinal distance between the adjacent first connecting pieces 41 is 0.5m to 1.5 m.
Further, the supporting structure of the side slope comprises a second connecting piece 42, and the second connecting piece 42 fixes one end of the geocell 40 far away from the slope surface 12 in the slope body 11. That is to say, when each layer of geocell 40 is laid, the geocell 40 needs to be fixed in the slope 11 by the second connecting piece 42 at the end of the geocell 40 far away from the slope 12, so that the geocell 40 can keep stability and better function as a reinforced retaining wall. In addition, the length of the second connectors 42 is greater than the height of the geocell 40, and the ends of the second connectors 42 are located between adjacent geocells 40. It will also be appreciated that the ends of the second connectors 42 are located between adjacent geocells 40 to avoid the second connectors 42 damaging the geocell 40 below them.
The supporting structure of the side slope of the embodiment of the application has the following specific implementation process:
1. implementation of the slide resistant pile 30: after the slope body 11 is excavated to the designed elevation of the pile top of the slide-resistant pile 30, the slide-resistant pile 30 (anchor pile) is constructed according to the designed position. And (3) carrying out artificial hole digging on the foundation pit of the pile body, arranging a retaining wall around the foundation pit, and constructing the retaining wall section by section according to design requirements. And after the foundation pit construction meets the design requirements, welding and binding pile body reinforcing steel bars according to a design drawing, installing a Baoli plate on the inner side of the retaining wall at the part above the roadbed surface 20, and then pouring concrete. The concrete of the pile body must be continuously poured to avoid forming a section with relatively weak strength. And after all the pile bodies are poured and the strength of the pile bodies reaches the design strength, excavating the soil body in front of the piles and between the piles.
2. Implementation of the inter-pile geocell 40: after the piles are excavated to the designed elevation, the geocell 40 is filled and paved layer by layer and compacted, and the distance between layers of the geocell 40 can be determined according to the specification of the geocell 40, the filling condition, the climate condition, the seismic data, the experimental parameters and the like. Each layer of geocell 40 is recycled to the side slope 10 for a certain length, namely along the direction of upward extension of the slope surface 12, the length of the geocell 40 is continuously reduced, so that the slope surface 12 forms a certain gradient. Each layer of geocell 40 is fixed at two ends by a first connecting piece 41 and a second connecting piece 42 respectively. In the embodiment of the present application, the first connecting member 41 and the second connecting member 42 may be steel nails or short steel bars, respectively. Wherein the first connecting member 41 for fixing one end of the geocell 40 close to the slope 12 is of a bent structure.
3. Implementation of galvanized wire netting: the galvanized wire netting is tensioned and spread on the slope surface 12 between the piles, and is hung on the bent first connecting piece 41 and fixed according to the form shown in the attached figure 3. A water discharge hole 13 is formed on the slope 12. According to the attached figure 4, the slope surface 12 is provided with water drainage holes 13 of soft permeable pipes with the diameter of 50mm, the water drainage holes are arranged in a rectangular mode, the distance is 3.0m, the hole depth is 0.7m, the horizontal size of a twisted slope part can be properly adjusted, and the water drainage holes 13 are as far as possible on the same line along the trend of the cutting slope. A soft water permeable pipe with the diameter of 46mm is placed in the water discharge hole 13, the water permeable pipe is made of plastic flower pipes, a layer of industrial polyester transition cloth is coated outside the plastic flower pipes, meshes of the plastic flower pipes are arranged in a quincunx shape of 3cm by 3cm, and the diameter of each mesh is 5 mm.
4. Implementation of substrate planting: the spraying material is sprayed along with the mixing, the uniformly mixed spraying material (a mixture consisting of grass seeds, planting soil, cement and other base materials) is sprayed on the slope 12 with the plant-growing hanging net 50 according to the designed thickness by using a concrete sprayer, and the purposes of stabilizing the side slope 10, greening the environment and improving the ecological environment are achieved through the mechanical reinforcement of the vegetation root system.
The grass seeds need to be perennial grass seeds with developed root systems, dwarf stems and luxuriant leaves and suitable for local survival, and the content of the spray-sown grass seeds is not less than 25g per square meter. When spraying, the spraying pressure should be controlled, and the spraying construction should be carried out uniformly and stably without damaging the slope surface 12. After the construction is finished, the spray-planted material is subjected to fine maintenance management, and the vegetation survival rate is ensured.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Moreover, the technical solutions of the present invention between the various embodiments can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and the present invention is not within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. A support structure for a side slope, comprising:
the lower ends of the anti-slide piles are embedded in the roadbed below the slope body of the side slope, and the anti-slide piles are arranged at intervals along the extension direction of the slope toe line of the side slope;
the geocell is buried in the slope body between the adjacent anti-slide piles, and one end of the geocell extends towards the slope body far away from the slope surface of the slope.
2. The support structure for a side slope according to claim 1, wherein the number of the geocells is plural, and the plural geocells are buried at intervals along a slope surface extending direction of the side slope.
3. The slope support structure of claim 2, wherein the longitudinal distance between adjacent geocells is 0.5-0.8 m.
4. The support structure for a side slope according to claim 1, wherein said geocell is buried horizontally within said slope.
5. Supporting construction for a side slope according to claim 1, characterised in that the height at which the anti-slide piles are buried outside the foundations, denoted L1, has a value less than or equal to 8 m.
6. The supporting construction of a side slope according to claim 1, wherein the cross section of the slide-resistant piles is square, the length of the square is represented by h, which is a value of 2.25m to 3.0m, and the width of the square is represented by d, which is a value of 2.0m to 2.75 m; and/or
The distance between the centroids of the adjacent anti-slide piles is 5-8 m.
7. The side slope supporting structure according to any one of claims 1 to 6, further comprising a plant growing hanging net laid on a slope surface of the side slope, wherein the plant growing hanging net is fixed on the slope surface.
8. The slope support structure of claim 7, comprising a first connector to secure the vegetation mat on the slope and to secure an end of the geocell near the slope in the slope.
9. The slope support structure of claim 7, comprising a second connector securing an end of the geocell remote from the ramp surface within the ramp body.
10. The slope support structure of claim 8, wherein the length of the first connectors is greater than the height of the geocells and the ends of the first connectors are located between adjacent geocells.
11. The slope support structure of claim 9, wherein the length of the second connector is greater than the height of the geocell, and the ends of the second connector are located between adjacent geocells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922065735.3U CN212316949U (en) | 2019-11-26 | 2019-11-26 | Supporting construction of side slope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922065735.3U CN212316949U (en) | 2019-11-26 | 2019-11-26 | Supporting construction of side slope |
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| CN212316949U true CN212316949U (en) | 2021-01-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939141A (en) * | 2019-11-26 | 2020-03-31 | 中铁第四勘察设计院集团有限公司 | Supporting construction of side slope |
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- 2019-11-26 CN CN201922065735.3U patent/CN212316949U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939141A (en) * | 2019-11-26 | 2020-03-31 | 中铁第四勘察设计院集团有限公司 | Supporting construction of side slope |
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