CN110593280B - Sap concrete anti-skidding expansion pile for slope reinforcement and construction method thereof - Google Patents
Sap concrete anti-skidding expansion pile for slope reinforcement and construction method thereof Download PDFInfo
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- CN110593280B CN110593280B CN201910813675.0A CN201910813675A CN110593280B CN 110593280 B CN110593280 B CN 110593280B CN 201910813675 A CN201910813675 A CN 201910813675A CN 110593280 B CN110593280 B CN 110593280B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
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- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention provides an sap concrete anti-skidding expansion pile for slope reinforcement and a construction method thereof. The invention consists of an anti-slide pile cap, an sap concrete expansion section, a waterproof partition plate and a rigid hollow pile body. The method comprises the steps of drilling holes in advance in a slope section needing anti-sliding reinforcement, embedding an sap concrete anti-sliding expansion pile in the drilled holes, injecting water into the anti-sliding expansion pile through a rigid hollow pile body, filling concrete dry powder mixture mixed with sap particles in the sap concrete expansion section, expanding outwards after meeting water, forming an anchoring section in a soil body after solidification, injecting water into a plurality of sap concrete expansion sections on the anti-sliding expansion pile for expansion, forming a plurality of anchoring parts after solidification, and improving the anti-sliding stability of the soil body. The invention strengthens the connection between the soil bodies by using a physical expansion method, enhances the sliding resistance of the side slope and avoids the accidents of soil body sliding, collapse and the like caused by side slope excavation. The invention can be used for slope excavation supporting engineering and improves the safety and stability of the slope.
Description
Technical Field
The invention relates to an sap concrete anti-skid expansion pile for slope reinforcement and a construction method thereof. The invention consists of an anti-slide pile cap, an sap concrete expansion section, a waterproof partition plate and a rigid hollow pile body. The method comprises the steps of drilling holes in advance in a slope section needing anti-sliding reinforcement, embedding an sap concrete anti-sliding expansion pile in the drilled holes, injecting water into the anti-sliding expansion pile through a rigid hollow pile body, filling concrete dry powder mixture mixed with sap particles in the sap concrete expansion section, expanding outwards after meeting water, forming an anchoring section in a soil body after solidification, injecting water into a plurality of sap concrete expansion sections on the anti-sliding expansion pile for expansion, forming a plurality of anchoring parts after solidification, and improving the anti-sliding stability of the slope soil body. The invention belongs to the relevant technical field of geotechnical engineering, slope engineering and the like.
Background
The slope management is a disaster prevention project with complex technology and difficult construction. In recent years, with the rapid development of highway construction industry and the increasing of large key engineering projects, slope management is more and more prominent. The slope reinforcement measures which can be adopted at present are many, and include a slope cutting and load reducing technology, a drainage and water interception measure, an anchoring measure, a concrete shear-resistant structure measure, a retaining measure, a slope pressing measure, a plant lattice slope protection, a protective surface and the like, and the principle of comprehensive treatment of the measures is emphasized in the slope treatment engineering so as to strengthen the stability of the slope. However, with the continuous increase of the scale of engineering construction, the height of the side slope is increased, the complexity is increased, the requirements on the side slope treatment technology are higher and higher, and with the development of scientific technology, the side slope treatment technology is further developed and gradually improved. The invention provides a novel anchor rod anchoring method, which adopts a sap concrete anti-skid expansion pile to anchor.
Disclosure of Invention
The invention aims to provide an sap concrete anti-sliding expansion pile for reinforcing a side slope and a construction method thereof. The invention consists of an anti-slide pile cap, an sap concrete expansion section, a waterproof partition plate and a rigid hollow pile body. The method comprises the steps of drilling holes in advance in a slope section needing anti-slip reinforcement, embedding an sap concrete anti-slip expansion pile in the drilled holes, injecting water into the anti-slip expansion pile through a rigid hollow pile body, filling concrete dry powder mixture mixed with sap super absorbent resin particles in the sap concrete expansion section, expanding outwards after meeting water, forming an anchoring section in a soil body after solidification, injecting water into a plurality of sap concrete expansion sections on the anti-slip expansion pile for expansion, forming a plurality of anchoring parts after solidification, and improving the anti-slip stability of the slope soil body. The method is mainly suitable for slope treatment engineering.
Solution of the invention
The invention provides an sap concrete anti-sliding expansion pile for slope reinforcement, which comprises an integral structure comprising 4 parts: 1) anti-slide pile cap, 2) sap concrete expansion section, 3) waterproof partition board, 4) rigid hollow pile body.
Wherein 1) the anti-slide pile cap is of a blunt conical metal structure and is additionally arranged at the end part of the rigid hollow pile body, so that the sap concrete anti-slide expansion pile can be more smoothly placed after drilling;
wherein 2) the sap concrete expansion section is a cylindrical structure with a hollow-out windowing cylinder wall, the sap concrete expansion section is sleeved outside the rigid hollow pile body, one sap concrete expansion section is arranged at each section, sap super absorbent resin particles and mixed plain concrete mixed dry powder are filled in the sap concrete expansion section, and the hollow-out windowing part of the cylinder wall is covered by flexible permeable geotextile to prevent internal fillers from leaking;
wherein 3) the waterproof partition plate is a flexible resin wafer, is sleeved on the rigid hollow pile body, has a slightly larger diameter than the pre-drilled hole, and is arranged between every two sap concrete expansion sections for separating a water channel between the sap concrete expansion sections;
wherein 4) the rigid hollow pile body is a rigid hollow cylindrical structure, the top end is closed, the bottom end is connected with an anti-sliding pile cap, a water outlet hole is formed in the position of the rigid hollow pile body sleeved with the sap concrete expansion section, and the rigid hollow pile body is used for injecting water into the sap concrete expansion section during anchoring;
the construction method of the sap concrete anti-skid expansion pile for slope reinforcement comprises the following steps:
1) measuring and positioning the slope on which the anti-sliding expansion pile needs to be arranged, and marking the drilling hole position;
2) before drilling operation, adjusting the angle of the drilling machine, drilling at a marked place, and starting the drilling machine until drilling to a preset depth;
3) after drilling, cleaning the hole, and driving the sap concrete anti-slip expansion pile to a preset position;
4) injecting water into the rigid hollow pile body, keeping water pressure for a certain time, expanding the sap concrete expansion section after absorbing water, extruding the sap concrete expansion section from the hollow window of the sap concrete expansion section, and forming an anchoring body;
5) and maintaining the water pressure of the rigid hollow pile body until the anchoring body finishes the hydration process to form a rigid anchoring body, thereby finishing the anchoring construction of one anchor rod.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention provides an sap concrete anti-skidding expansion pile for slope reinforcement and a construction method thereof. The invention consists of an anti-slide pile cap, an sap concrete expansion section, a waterproof partition plate and a rigid hollow pile body. The method comprises the steps of drilling holes in advance in a slope section needing anti-sliding reinforcement, embedding an sap concrete anti-sliding expansion pile in the drilled holes, injecting water into the anti-sliding expansion pile through a rigid hollow pile body, filling concrete dry powder mixture mixed with sap particles in the sap concrete expansion section, expanding outwards after meeting water, forming an anchoring section in a soil body after solidification, injecting water into a plurality of sap concrete expansion sections on the anti-sliding expansion pile for expansion, forming a plurality of anchoring parts after solidification, and improving the anti-sliding stability of the soil body. The invention strengthens the connection between the soil bodies by using a physical expansion method, enhances the sliding resistance of the side slope, avoids the accidents of soil body sliding, collapse and the like caused by side slope excavation, and improves the stability of the side slope. The construction efficiency is improved, and grouting materials are saved. The invention can be used for slope excavation supporting engineering and improves the safety and stability of the slope. The device has the advantages of simple and convenient instrument operation, high construction efficiency, simple and convenient construction operation, high efficiency and good benefit.
Drawings
FIG. 1 is a schematic view of sap concrete anti-slip expansion pile (abstract attached drawing at the same time)
In the figure: the anti-slide pile comprises an anti-slide pile cap, a 2sap concrete expansion section, 3 flexible permeable geotextiles, 4 waterproof partition plates and 5 rigid hollow pile bodies.
The specific implementation mode is as follows:
the invention provides an sap concrete anti-sliding expansion pile for slope reinforcement, which comprises an integral structure comprising 4 parts: the anti-slide pile comprises an anti-slide pile cap, an sap concrete expansion section, a waterproof partition plate and a rigid hollow pile body.
The anti-slide pile cap 1 in the structure is of a blunt conical metal structure and is additionally arranged at the end part of the rigid hollow pile body 5, so that the sap concrete anti-slide expansion pile can be more smoothly placed after drilling;
the sap concrete expansion section 2 in the structure is a cylindrical structure with a hollow-out and windowed cylinder wall, the structure is sleeved outside a rigid hollow pile body, one sap concrete expansion section 2 is arranged at every other section, sap super absorbent resin particles and mixed plain concrete mixed dry powder are filled in the sap concrete expansion section 2, the hollow-out and windowed part of the cylinder wall is covered by a flexible water-permeable geotextile 3, and the internal filler is prevented from leaking;
the waterproof partition plate 4 in the structure is a flexible resin wafer, is sleeved on the rigid hollow pile body 5, has a slightly larger diameter than the pre-drilled hole, and is arranged between every two sap concrete expansion sections 2 for separating a moisture channel between the sap concrete expansion sections 2;
the rigid hollow pile body 5 in the structure is a rigid hollow cylindrical structure, the top end is closed, the bottom end is connected with an anti-sliding pile cap, a water outlet hole is formed in the position, sleeved with the sap concrete expansion section 2, of the rigid hollow pile body, and the rigid hollow pile body is used for injecting water into the sap concrete expansion section 2 during anchoring;
the construction method of the sap concrete anti-skid expansion pile for slope reinforcement comprises the following steps:
1) measuring and positioning the slope on which the anti-sliding expansion pile needs to be arranged, and marking the drilling hole position;
2) before drilling operation, adjusting the angle of the drilling machine, drilling at a marked place, and starting the drilling machine until drilling to a preset depth;
3) after drilling, cleaning the hole, and driving the sap concrete anti-slip expansion pile to a preset position;
4) injecting water into the rigid hollow pile body 5, keeping water pressure for a certain time, expanding the sap concrete expansion section 2 after absorbing water, extruding the water out of the hollow window of the sap concrete expansion section 2, and forming an anchoring body;
5) and keeping the water pressure of the rigid hollow pile body 5 until the anchoring body finishes the hydration process to form a rigid anchoring body, thereby finishing the anchoring construction of one anchor rod.
Claims (2)
1. An sap concrete anti-skidding expansion pile for slope reinforcement, the whole structure of which comprises 4 parts: antiskid pile cap, sap concrete expansion section, waterproof baffle, rigidity cavity pile body, characterized by:
1) the anti-sliding pile cap is of a blunt conical metal structure and is additionally arranged at the end part of the rigid hollow pile body, so that the sap concrete anti-sliding expansion pile can be more smoothly placed after drilling;
2) the sap concrete expansion section is of a cylindrical structure with a hollow-out and windowed cylinder wall, is sleeved outside the rigid hollow pile body, is provided with one sap concrete expansion section every other section, is filled with sap super absorbent resin particles and mixed plain concrete mixed dry powder, and is covered by flexible permeable geotextile at the hollow-out and windowed part of the cylinder wall to prevent internal fillers from leaking;
3) the waterproof partition plate is a flexible resin wafer, is sleeved on the rigid hollow pile body, has a slightly larger diameter than the pre-drilled hole, and is arranged between every two sap concrete expansion sections for separating a water channel between the sap concrete expansion sections;
4) the rigid hollow pile body is of a rigid hollow cylindrical structure, the top end of the rigid hollow pile body is sealed, the bottom end of the rigid hollow pile body is connected with an anti-sliding pile cap, and a water outlet hole is formed in the position, sleeved with the sap concrete expansion section, of the rigid hollow pile body and used for injecting water into the sap concrete expansion section during anchoring.
2. The construction method of the sap concrete anti-sliding expansion pile for slope reinforcement based on claim 1 is characterized in that:
1) measuring and positioning the slope on which the sap concrete anti-skid expansion pile needs to be arranged, and marking the drilling hole position;
2) before drilling operation, adjusting the angle of the drilling machine, drilling at a marked place, and starting the drilling machine until drilling to a preset depth;
3) after drilling, cleaning the hole, and driving the sap concrete anti-slip expansion pile to a preset position;
4) injecting water into the rigid hollow pile body, keeping water pressure for a certain time, expanding the sap concrete expansion section after absorbing water, extruding the sap concrete expansion section from the hollow window of the sap concrete expansion section, and forming an anchoring body;
5) and maintaining the water pressure of the rigid hollow pile body until the anchoring body finishes the hydration process to form a rigid anchoring body, thereby finishing the anchoring construction of one anchor rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910813675.0A CN110593280B (en) | 2019-08-30 | 2019-08-30 | Sap concrete anti-skidding expansion pile for slope reinforcement and construction method thereof |
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| CN201910813675.0A CN110593280B (en) | 2019-08-30 | 2019-08-30 | Sap concrete anti-skidding expansion pile for slope reinforcement and construction method thereof |
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| CN110593280A CN110593280A (en) | 2019-12-20 |
| CN110593280B true CN110593280B (en) | 2020-12-08 |
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| CN113202081A (en) * | 2021-04-02 | 2021-08-03 | 清华大学 | Super absorbent resin water absorption pile for soft soil foundation and construction method thereof |
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| CN101532290B (en) * | 2009-02-25 | 2010-09-01 | 河海大学 | Granule grouting pile of ripple plastic sleeve with hole for strengthening soft soil foundation and strengthening method |
| CN101949152B (en) * | 2010-09-28 | 2012-09-05 | 张继红 | Compound anchor rod and construction method thereof |
| JP2014152447A (en) * | 2013-02-05 | 2014-08-25 | Taisei Corp | Small diameter corrosion-resistant ferroconcrete stake |
| CN203924036U (en) * | 2014-05-16 | 2014-11-05 | 杭州江润科技有限公司 | A kind of pile for prestressed pipe of outsourcing active material pile body |
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