CN212248284U - Steel pipe pile protection system for soft foundation mixed slope - Google Patents
Steel pipe pile protection system for soft foundation mixed slope Download PDFInfo
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- CN212248284U CN212248284U CN202020477022.8U CN202020477022U CN212248284U CN 212248284 U CN212248284 U CN 212248284U CN 202020477022 U CN202020477022 U CN 202020477022U CN 212248284 U CN212248284 U CN 212248284U
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Abstract
The utility model discloses a steel-pipe pile protection system to soft foundation mix side slope belongs to side slope protection technical field. The utility model discloses a hard rock stratum, morals and manners rock stratum and soil property are domatic, the fixed surface of hard rock stratum be provided with the retaining wall, the domatic top of soil property is provided with the catch basin, the domatic surface arc of soil property crisscross be provided with the steel-pipe pile, the inside cartridge of steel-pipe pile is provided with the interpolation reinforcing bar, the steel-pipe pile upper end exceed the part on the domatic surface of soil property and execute and do the crown beam, the outside of crown beam is provided with the shotcrete inoxidizing coating, the shotcrete protective layer is connected stock, retaining wall and crown beam. The utility model discloses utilize steel-pipe pile protection system, the steel-pipe pile forms reinforced earth arch structure with the soil body on every side after slip casting, and the effectual deformation and the fracture that has reduced slope upper portion are little at the medium-sized vibration of work progress, and the noise is low, and the pile position is arranged in a flexible way, and is safe rapid, has both reduced engineering cost and has guaranteed construction safety and protecting effect again.
Description
Technical Field
The utility model relates to a side slope protection technical field, more specifically say, relate to a steel-pipe pile protection system to mixed side slope of weak basis.
Background
The research on the slope stability is always an important content in the field of geotechnical engineering, and the treatment of the geotechnical mixed slope as a complex and special slope in actual engineering is always a key and difficult point. The rock-soil mixed side slope generally comprises a covering layer formed by upper soil and weathered rocks, the lower part of the covering layer is formed by rocks, the rock-soil mixed side slope is widely distributed, and all highway projects in China are related. Because the damage modes are various, in the current relevant regulation, only the uniform soil body side slope, the rock mass with joint development or the abandoned rock side slope and the like are explained, and no detailed design description is made on the protection of the soil-rock mixed side slope, so that the difficulty of treating the soil-rock mixed side slope is increased. The traditional support design mainly takes the strength and the stability of a side slope, and adopts technologies such as plastering, guniting, grouted rubble retaining wall, anchor spraying slope protection and the like to ensure the safety of the side slope, and the protection has important significance for reducing the instability and the corrosivity of the initial stage of side slope construction. However, as time goes on, under the long-term action of slope toe seepage, rainfall, underground water, self-weight and vehicle load, due to the difference of mechanical properties of soil and rocks, geological disasters such as cracks and small landslides may occur at the rear edge of the side slope, so that great potential safety hazards are caused to the operation of the highway.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome prior art's is not enough, provides a steel-pipe pile protection system to mixed side slope of weak basis, the utility model discloses utilize steel-pipe pile protection system, the steel-pipe pile forms reinforced earth arch structure with the soil body on every side after the slip casting, the effectual deformation and the fracture that has reduced side slope upper portion, and it is little to vibrate in the work progress, and the noise is low, and the pile position is arranged in a flexible way, and safety is rapid, and after upper portion consolidates, the risk of side slope unstability when having reduced excavation slope foot has both reduced engineering cost and has guaranteed construction safety and protecting effect.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model relates to a steel pipe pile protection system for soft foundation mixed slope, which comprises a hard rock stratum, a weathered rock stratum and a soil slope, the surface of the hard rock stratum is fixedly provided with a retaining wall, the upper part of the hard rock stratum is a weathered rock stratum, the upper part of the weathered rock stratum is a soil slope surface, the top end of the soil slope surface is provided with a water intercepting ditch, the surface of the soil slope surface is provided with steel pipe piles in a staggered manner, the interior of each steel pipe pile is inserted with an inserted reinforcing steel bar, the part of the upper end of the steel pipe pile, which is higher than the surface of the soil slope, is made into a crown beam, a sprayed concrete protective layer is arranged outside the crown beam, the upper end of the sprayed concrete protective layer extends to the surface of the soil slope, the lower end of the sprayed concrete protective layer extends to one side of the retaining wall, the wall of retaining wall on reserve and be provided with the outlet, the bottom embedding hard rock stratum of retaining wall, the domatic stock that is provided with in upper portion of retaining wall.
Furthermore, the retaining wall is arranged at the position of the toe of the hard rock stratum, a side ditch is formed in one side of the retaining wall, and the slope surface at the upper part of the retaining wall is sprayed with concrete to protect the slope surface.
Furthermore, the inserted steel bars are phi 22 twisted steel bars, the inserted steel bars are distributed in the steel pipe pile in a shape like a Chinese character 'pin', and cement slurry or cement fly ash slurry is poured into gaps between the inserted steel bars and the steel pipe pile.
Furthermore, the outer surface of the pile body of the steel pipe pile is provided with grouting holes at intervals, and the distance between every two adjacent steel pipe piles is one meter
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
the utility model discloses utilize steel-pipe pile protection system, reduced toe seepage flow, increase the stability of side slope, the steel-pipe pile forms reinforced earth arch structure with the soil body on every side after slip casting, the effectual deformation and the fracture that has reduced side slope upper portion, it is little at the medium-sized vibration of work progress, the noise is low, the pile position is arranged in a flexible way, safety is rapid, after the upper portion is consolidated, the risk of side slope unstability when having reduced excavation toe has not only reduced engineering cost but also guaranteed construction safety and protecting effect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an external view of the steel pipe pile of the present invention;
FIG. 3 is a schematic view of the internal structure of the steel pipe pile of the present invention;
fig. 4 is a diagram of the effect of applying the crown beam of the present invention.
In the figure: 1. a hard rock layer; 2. a weathered rock formation; 3. a soil slope; 4. intercepting a ditch; 5. steel pipe piles; 6. spraying a concrete protective layer; 7. an anchor rod; 8. a retaining wall; 9. a water drain hole; 10. side ditches; 11. a crown beam; 12. grouting holes; 13. and (5) inserting steel bars.
Detailed Description
The invention is further described with reference to the following figures and examples:
example 1
As can be seen from fig. 1-4, the steel pipe pile protection system for the soft foundation mixed slope of the embodiment includes a hard rock layer 1, a weathered rock layer 2, and a soil slope 3, a retaining wall 8 is fixedly disposed on the surface of the hard rock layer 1, the weathered rock layer 2 is disposed on the upper portion of the hard rock layer 1, the soil slope 3 is disposed on the upper portion of the weathered rock layer 2, a cut-off trench 4 is disposed at the top end of the soil slope 3, steel pipe piles 5 are disposed on the surface of the soil slope 3 in a staggered manner, an inserted steel bar 13 is inserted into the steel pipe piles 5, a crown beam 11 is applied to a portion of the upper end of the steel pipe pile 5 higher than the surface of the soil slope 3, a sprayed concrete protection layer 6 is disposed outside the crown beam 11, the upper end of the sprayed concrete protection layer 6 extends to the surface of the soil slope 3, the lower end of the sprayed concrete protection layer 6 extends to one side of the retaining wall 8, the bottom embedding hard rock stratum 1 of retaining wall 8, the domatic stock 7 that is provided with in upper portion of retaining wall 8, retaining wall 8 set up in the toe position department of hard rock stratum 1, and side ditch 10 has been seted up to one side of retaining wall 8, and the domatic shotcrete in upper portion of retaining wall 8 carries out domatic protection.
The lower end of the steel pipe pile 5 is embedded into the weathering rock stratum 2, grouting holes 12 are formed in the outer surface of the pile body of the steel pipe pile 5 at intervals, the distance between every two adjacent steel pipe piles 5 is one meter, the pile body of the steel pipe pile 5 is a seamless steel pipe with phi 108 x 6mm, and the grouting holes 12 are distributed on the pile body of the steel pipe pile 5 in a plum blossom shape.
The inserted steel bars 13 are threaded steel bars with phi 22, the inserted steel bars 13 are distributed in a shape like a Chinese character 'pin' in the steel pipe pile 5, cement slurry or cement fly ash slurry is poured into a gap part between the inserted steel bars 13 and the steel pipe pile 5, the water cement ratio is controlled to be 1:1-1:1.5, and the grouting pressure is controlled to be 0.2-0.5 MPa.
After the crown beam 11 is constructed, the steel pipe pile 5, the rock-soil body formed by grouting and the inserted reinforcing steel bar 13 jointly form a reinforced soil arch structure, so that the gliding force of the slope rock-soil body is effectively resisted, and the integrity and the stability of the slope are improved.
The utility model discloses utilize 5 protection systems of steel-pipe pile, reduced the toe seepage flow, increase the stability of side slope, steel-pipe pile 5 forms reinforced earth arch structure with the soil body on every side after the slip casting, the effectual deformation and the fracture that has reduced side slope upper portion, medium-sized vibration is little in the work progress, the noise is low, the pile position is arranged in a flexible way, safety is rapid, after upper portion consolidates, the risk of side slope unstability when having reduced excavation toe, not only reduced engineering cost but also guaranteed construction safety and protecting effect.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (4)
1. The utility model provides a steel-pipe pile protection system to mixed side slope of weak basis, includes hard rock stratum (1), morals and manners rock stratum (2) and soil property domatic (3), its characterized in that: the surface of the hard rock stratum (1) is fixedly provided with a retaining wall (8), the upper part of the hard rock stratum (1) is a weathered rock stratum (2), the upper part of the weathered rock stratum (2) is a soil slope (3), the top end of the soil slope (3) is provided with a water intercepting ditch (4), the surface of the soil slope (3) is provided with steel pipe piles (5) in a staggered manner, the inner parts of the steel pipe piles (5) are provided with inserted steel bars (13) in an inserted manner, the part of the upper end of each steel pipe pile (5) higher than the surface of the soil slope (3) is constructed into a crown beam (11), the outer part of the crown beam (11) is provided with a sprayed concrete protective layer (6), the upper end of the sprayed concrete protective layer (6) extends to the surface of the soil slope (3), the lower end of the sprayed concrete protective layer (6) extends to one side of the retaining wall (8), and the wall surface of the retaining wall (8) is, the bottom of retaining wall (8) imbeds hard rock stratum (1), and the upper portion domatic of retaining wall (8) is provided with stock (7).
2. The steel pipe pile protection system for the soft foundation mixed slope as claimed in claim 1, wherein: retaining wall (8) set up slope toe position department at hard rock stratum (1), side ditch (10) have been seted up to one side of retaining wall (8), the upper portion domatic shotcrete of retaining wall (8) carries out domatic protection.
3. The steel pipe pile protection system for the soft foundation mixed slope as claimed in claim 1, wherein: the inserted steel bars (13) are threaded steel bars with the diameter of phi 22, the inserted steel bars (13) are distributed in the steel pipe pile (5) in a shape like a Chinese character 'pin', and cement slurry or cement fly ash slurry is poured into a gap between the inserted steel bars (13) and the steel pipe pile (5).
4. The steel pipe pile protection system for the soft foundation mixed slope as claimed in claim 1, wherein: the outer surface of the pile body of the steel pipe pile (5) is provided with grouting holes (12) at intervals, and the distance between every two adjacent steel pipe piles (5) is one meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020477022.8U CN212248284U (en) | 2020-04-03 | 2020-04-03 | Steel pipe pile protection system for soft foundation mixed slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020477022.8U CN212248284U (en) | 2020-04-03 | 2020-04-03 | Steel pipe pile protection system for soft foundation mixed slope |
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| Publication Number | Publication Date |
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| CN212248284U true CN212248284U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020477022.8U Active CN212248284U (en) | 2020-04-03 | 2020-04-03 | Steel pipe pile protection system for soft foundation mixed slope |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197504A (en) * | 2021-12-31 | 2022-03-18 | 中铁一局集团有限公司 | Comprehensive treatment construction method for unstable side slope |
| CN114809014A (en) * | 2022-05-16 | 2022-07-29 | 兰州理工大学 | Construction method of pile-anchor combined supporting structure with unloading pipe shed |
-
2020
- 2020-04-03 CN CN202020477022.8U patent/CN212248284U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197504A (en) * | 2021-12-31 | 2022-03-18 | 中铁一局集团有限公司 | Comprehensive treatment construction method for unstable side slope |
| CN114809014A (en) * | 2022-05-16 | 2022-07-29 | 兰州理工大学 | Construction method of pile-anchor combined supporting structure with unloading pipe shed |
| CN114809014B (en) * | 2022-05-16 | 2023-09-01 | 兰州理工大学 | Construction method of pile-anchor combined supporting structure with unloading pipe shed |
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