CN115217094B - Miniature precast pile for electric power - Google Patents
Miniature precast pile for electric power Download PDFInfo
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- CN115217094B CN115217094B CN202110427953.6A CN202110427953A CN115217094B CN 115217094 B CN115217094 B CN 115217094B CN 202110427953 A CN202110427953 A CN 202110427953A CN 115217094 B CN115217094 B CN 115217094B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
-
- 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
- E02D2300/0023—Slurry
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明属电力技术领域，公开了一种电力用微型预制桩，具有桩身，其特征在于还具有预制管桩，预制管桩位于桩身内部，预制管桩的上端伸出桩身的上表面，预制管桩的下端附近具有多个凹陷的逆止浆阀安装通道，每个逆止浆阀安装通道上具有注浆孔，桩身内部的预制管桩的直径大于伸出桩身上表面的预制管桩的直径，预制管桩的轴线与桩身的轴线相重合，桩身内具有加强部件，所述加强部件由多根第一加强筋及第二加强筋构成，预制管桩与桩身结合为一体。本发明具有以下主要有益技术效果：（1）节省材料用量、节能减排；（2）基础构件可批量生产；（3）输电线路基础施工机械化程度高，施工及养护工期短；（4）土方开挖小，无需现场浇制，青苗赔偿费低。
The present invention belongs to the field of electric power technology, and discloses a micro prefabricated pile for electric power, which has a pile body and is characterized in that it also has a prefabricated pipe pile, which is located inside the pile body, the upper end of the prefabricated pipe pile extends out of the upper surface of the pile body, and the lower end of the prefabricated pipe pile has a plurality of recessed check valve installation channels near the lower end, each check valve installation channel has a grouting hole, the diameter of the prefabricated pipe pile inside the pile body is greater than the diameter of the prefabricated pipe pile extending out of the upper surface of the pile body, the axis of the prefabricated pipe pile coincides with the axis of the pile body, and the pile body has a reinforcement component, which is composed of a plurality of first reinforcement ribs and a second reinforcement rib, and the prefabricated pipe pile is integrated with the pile body. The present invention has the following main beneficial technical effects: (1) saving material consumption, energy saving and emission reduction; (2) foundation components can be mass-produced; (3) the mechanization degree of power transmission line foundation construction is high, and the construction and maintenance period is short; (4) the earthwork excavation is small, no on-site casting is required, and the compensation fee for young crops is low.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a miniature precast pile for electric power.
Background
At present, the transformer substation foundation is a traditional large-excavation concrete foundation and a cast-in-place pile foundation, and the problems that the large-excavation concrete foundation is large in excavation area, large in occupied area, large in environmental impact and complicated in construction procedure are found in the use process, a template is required to be erected, a cushion layer is required to be made, and the cast-in-place pile foundation is cast in situ, the construction speed is low, the period is long, the environmental pollution is caused, and the pile forming quality is difficult to control. The transformer substation framework foundation is a traditional large-excavation concrete foundation, the large-excavation concrete foundation is found to have the problems of large excavation area, large occupied area, large influence on environment, complicated construction procedures and the like in the use process, templates are required to be erected and cushion layers are required to be made before concrete is poured, foundation bolts are easy to shift and subside, the defects of unsafe excavation, easy collapse and the like are caused, the outer wall of the steel pipe pile foundation in the prior art is smooth, and even if concrete is poured, the foundation is easy to displace and subside due to the influences of the height and the self weight of the transformer substation framework and external factors.
On the other hand, the operators in China are wide, the construction engineering of the transmission line is huge, and due to the reasons of machines, the foundation of the transmission line iron tower is generally provided with bored piles. However, the mountain area of China is about 2/3 of the territory area, a large number of transmission lines are routed in the Chong mountain, and the iron towers are inevitably built on the sloping fields in a large amount. Because the topography of the tower is steep, the geological structure is complex, the traffic is inconvenient, and the machine tool and the building material are difficult to transport when the bored pile is constructed. Considering the specificity of the power transmission line in the mountain area, the large-diameter pipe pile and the traditional pile sinking mode are adopted, the construction machine is huge, the construction machine is difficult to adapt to complicated and changeable mountain land topography, meanwhile, the use amount of site pile sinking concrete and reinforcing steel bars is large, the construction period is long, the construction cost of the foundation of the iron tower is high, and the protection damage is serious.
For this reason, there is an urgent need in the industry to solve the corresponding technical problems.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose a miniature precast pile for electric power, which is realized by adopting the following technical scheme.
The miniature precast pile for electric power is characterized by further comprising a precast pile, wherein the precast pile is positioned in the pile body, the upper end of the precast pile extends out of the upper surface of the pile body, a plurality of sunken reverse slurry valve installation channels are arranged near the lower end of the precast pile, each reverse slurry valve installation channel is provided with a slurry injection hole, the diameter of the precast pile in the pile body is larger than that of the precast pile extending out of the upper surface of the pile body, the axis of the precast pile coincides with the axis of the pile body, a reinforcing part is arranged in the pile body and consists of a plurality of first reinforcing ribs and second reinforcing ribs, the axes of all the first reinforcing ribs are distributed on the same cylindrical surface, the second reinforcing ribs fix the first reinforcing ribs, or the second reinforcing ribs are perpendicular to the first reinforcing ribs through bundling parts or spirally cover/limit the first reinforcing ribs, and the precast pile is combined with the pile body into a whole.
The miniature precast pile for electric power is characterized in that the diameter of the pile body is 200-400mm.
The miniature precast pile for electric power is characterized in that the shearing bearing capacity of the pile body is 30-50kN.
The miniature precast pile for electric power is characterized in that the axial center tension bearing capacity of the pile body is 150-180kN.
The miniature precast pile for electric power is characterized in that the bearing capacity of the axial center of the pile body under pressure is 500-650kN.
The miniature precast pile for electric power is characterized by being prepared by the following method:
the first step, a reinforcing part is placed, the reinforcing part is composed of a plurality of first reinforcing ribs and second reinforcing ribs, the axes of all the first reinforcing ribs are distributed on the same cylindrical surface, the second reinforcing ribs fix the first reinforcing ribs, or fix the second reinforcing ribs with the first reinforcing ribs through a bundling part, and the second reinforcing ribs are perpendicular to the first reinforcing ribs or spirally cover/limit the first reinforcing ribs;
the second step is to place the outer shell outside the reinforcement member;
thirdly, placing an inner shell, placing the inner shell inside the reinforcing part, and keeping the inner shell and the outer shell fixed in position;
Fourthly, placing a barrier body, placing the barrier body near the lower end of the outer shell and plugging the barrier body near the reinforcing part;
fifthly, placing an introducing body, penetrating into and penetrating through the inner shell from the middle position of the blocking body;
Step six, cement paste is injected for the first time, the cement paste is injected between the inner shell and the outer shell and compacted, the inner shell and the outer shell are removed after solidification, a pile body is formed, a grouting cavity is formed in the pile body, and a non-return grouting valve mounting channel and a grouting hole are formed in the lower surface of the pile body;
Placing the precast tubular pile, placing the precast tubular pile into a grouting cavity from the top, keeping a relatively fixed position between the precast tubular pile and the inner wall of the pile body, and enabling the upper end of the precast tubular pile to extend out of the upper surface of the pile body;
And eighth step, grouting cement for the second time, installing a check valve in the check valve installation channel, connecting a grouting pipe of a grouting machine to an inlet of the check valve, connecting an outlet of the check valve to a grouting hole, continuously grouting cement slurry, and continuously flowing upwards in the grouting cavity until the grouting cavity is filled with cement slurry, closing the check valve, and solidifying to finish the manufacturing of the miniature precast pile for electric power.
The miniature precast pile for electric power is characterized in that the pressure of cement slurry injected from the second cement slurry injection is 3.8-4.2 MPa, and the pressure of cement slurry injected after the reverse slurry stop valve is opened is 0.9-1.1 MPa.
The miniature precast pile for electric power is characterized by comprising water in cement paste, cement, an expanding agent and a water reducing agent in a weight ratio of 0.55:1.0:0.12:0.01.
The invention has the main beneficial effects of (1) saving the consumption of concrete, steel and the like, saving energy and reducing emission, (2) realizing the factory prefabrication of foundation members, improving the construction quality of foundation engineering, (3) improving the mechanization degree of foundation construction of a power transmission line, greatly shortening the construction period and maintenance period of the foundation, and (4) having small earth excavation, no need of on-site concrete pouring, greatly reducing the compensation cost of young seedlings and having outstanding environmental protection effect.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of a section of a reinforcing member for use within fig. 1.
In the figure, the pile body is 1-, the pile is 2-, the pile is 11-a non-return slurry valve installation channel, the pile is 12-a grouting hole, the pile is 13-a first reinforcing rib, and the pile is 14-a second reinforcing rib.
Detailed Description
The miniature precast pile for electric power is characterized by further comprising a precast pile 2, wherein the precast pile 2 is positioned in the pile 1, the upper end of the precast pile 2 extends out of the upper surface of the pile 1, a plurality of sunken inverted slurry valve installation channels 11 are arranged near the lower end of the precast pile 2, each inverted slurry valve installation channel is provided with a slurry injection hole 12, the diameter of the precast pile 2 in the pile 1 is larger than that of the precast pile 2 extending out of the upper surface of the pile 1, the axis of the precast pile 2 coincides with the axis of the pile 1, a reinforcing part is arranged in the pile 1 and consists of a plurality of first reinforcing ribs 13 and second reinforcing ribs 14, the axes of all the first reinforcing ribs 13 are distributed on the same cylindrical surface, the second reinforcing ribs 14 fix the first reinforcing ribs 13, or fix the second reinforcing ribs 14 with the first reinforcing ribs 13 through bundling parts, the second reinforcing ribs 14 are perpendicular to the first reinforcing ribs 13 or the second reinforcing ribs 14 spirally cover/limit the first reinforcing ribs 13, and the pile 2 and the pile 1 are combined into a whole.
The miniature precast pile for electric power is characterized in that the diameter of the pile body is 200-400mm.
The miniature precast pile for electric power is characterized in that the shearing bearing capacity of the pile body is 30-50kN.
The miniature precast pile for electric power is characterized in that the axial center tension bearing capacity of the pile body is 150-180kN.
The miniature precast pile for electric power is characterized in that the bearing capacity of the axial center of the pile body under pressure is 500-650kN.
The miniature precast pile for electric power is characterized by being prepared by the following method:
The first step, a reinforcing part is placed, the reinforcing part is composed of a plurality of first reinforcing ribs and second reinforcing ribs, the axes of all the first reinforcing ribs are distributed on the same cylindrical surface, the second reinforcing ribs fix the first reinforcing ribs, or fix the second reinforcing ribs with the first reinforcing ribs through a bundling part, and the second reinforcing ribs are perpendicular to the first reinforcing ribs 13 or the second reinforcing ribs spirally cover/limit the first reinforcing ribs;
the second step is to place the outer shell outside the reinforcement member;
thirdly, placing an inner shell, placing the inner shell inside the reinforcing part, and keeping the inner shell and the outer shell fixed in position;
Fourthly, placing a barrier body, placing the barrier body near the lower end of the outer shell and plugging the barrier body near the reinforcing part;
fifthly, placing an introducing body, penetrating into and penetrating through the inner shell from the middle position of the blocking body;
Step six, cement paste is injected for the first time, the cement paste is injected between the inner shell and the outer shell and compacted, the inner shell and the outer shell are removed after solidification, a pile body is formed, a grouting cavity is formed in the pile body, and a non-return grouting valve mounting channel and a grouting hole are formed in the lower surface of the pile body;
Placing the precast tubular pile, placing the precast tubular pile into a grouting cavity from the top, keeping a relatively fixed position between the precast tubular pile and the inner wall of the pile body, and enabling the upper end of the precast tubular pile to extend out of the upper surface of the pile body;
And eighth step, grouting cement for the second time, installing a check valve in the check valve installation channel, connecting a grouting pipe of a grouting machine to an inlet of the check valve, connecting an outlet of the check valve to a grouting hole, continuously grouting cement slurry, and continuously flowing upwards in the grouting cavity until the grouting cavity is filled with cement slurry, closing the check valve, and solidifying to finish the manufacturing of the miniature precast pile for electric power.
The miniature precast pile for electric power is characterized in that the pressure of cement slurry injected from the second cement slurry injection is 3.8-4.2 MPa, and the pressure of cement slurry injected after the reverse slurry stop valve is opened is 0.9-1.1 MPa.
The miniature precast pile for electric power is characterized in that cement paste consists of water, cement, an expanding agent and a water reducing agent.
The miniature precast pile for electric power is characterized in that the weight ratio of water to cement to swelling agent to water reducing agent in cement paste is 0.55:1.0:0.12:0.01.
The micro precast pile for electric power is characterized in that the material of the reinforcing member is preferably steel.
The miniature precast pile for electric power is common cement without special requirements, and the expanding agent and the water reducing agent are common in the technical field of concrete without special requirements.
When the pile is constructed, the machine is used for punching, the upper surface of the post-pouring platform is leveled, the post-pouring platform is plugged into the hole of the pile body from the hole of the platform, the upper end of the pile body is arranged on the upper end of the prefabricated pipe pile, the tower is fixed on the platform and is fixed with the upper end of the prefabricated pipe pile, and an integrated structure is formed.
The invention has the main beneficial effects of (1) saving the consumption of concrete, steel and the like, saving energy and reducing emission, (2) realizing the factory prefabrication of foundation members, improving the construction quality of foundation engineering, (3) improving the mechanization degree of foundation construction of a power transmission line, greatly shortening the construction period and maintenance period of the foundation, and (4) having small earth excavation, no need of on-site concrete pouring, greatly reducing the compensation cost of young seedlings and having outstanding environmental protection effect.
The foregoing has outlined the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The miniature precast pile for electric power is characterized by further comprising a precast pile (2), wherein the precast pile (2) is positioned inside the pile body (1), the upper end of the precast pile (2) extends out of the upper surface of the pile body (1), a plurality of sunken reverse slurry valve installation channels (11) are arranged near the lower end of the precast pile (2), each reverse slurry valve installation channel is provided with a grouting hole (12), the diameter of the precast pile (2) inside the pile body (1) is larger than the diameter of the precast pile (2) extending out of the upper surface of the pile body (1), the axis of the precast pile (2) coincides with the axis of the pile body (1), a reinforcing part is arranged in the pile body (1), the reinforcing part consists of a plurality of first reinforcing ribs (13) and second reinforcing ribs (14), the axes of all the first reinforcing ribs (13) are distributed on the same cylindrical surface, the second reinforcing ribs (14) fix the first reinforcing ribs (13), or the second reinforcing ribs (14) are fixed with the first reinforcing ribs (13) through binding parts, and the second reinforcing ribs (14) are combined with the first reinforcing ribs (13) vertically to the first reinforcing ribs (14) or are combined with the first reinforcing ribs (14) vertically;
the miniature precast pile for electric power is prepared by the following method:
the first step, a reinforcing part is placed, the reinforcing part is composed of a plurality of first reinforcing ribs and second reinforcing ribs, the axes of all the first reinforcing ribs are distributed on the same cylindrical surface, the second reinforcing ribs fix the first reinforcing ribs, or fix the second reinforcing ribs with the first reinforcing ribs through a bundling part, and the second reinforcing ribs are perpendicular to the first reinforcing ribs or spirally cover/limit the first reinforcing ribs;
the second step is to place the outer shell outside the reinforcement member;
thirdly, placing an inner shell, placing the inner shell inside the reinforcing part, and keeping the inner shell and the outer shell fixed in position;
Fourthly, placing a barrier body, placing the barrier body near the lower end of the outer shell and plugging the barrier body near the reinforcing part;
fifthly, placing an introducing body, penetrating into and penetrating through the inner shell from the middle position of the blocking body;
Step six, cement paste is injected for the first time, the cement paste is injected between the inner shell and the outer shell and compacted, the inner shell and the outer shell are removed after solidification, a pile body is formed, a grouting cavity is formed in the pile body, and a non-return grouting valve mounting channel and a grouting hole are formed in the lower surface of the pile body;
Placing the precast tubular pile, placing the precast tubular pile into a grouting cavity from the top, keeping a relatively fixed position between the precast tubular pile and the inner wall of the pile body, and enabling the upper end of the precast tubular pile to extend out of the upper surface of the pile body;
And eighth step, grouting cement for the second time, installing a check valve in the check valve installation channel, connecting a grouting pipe of a grouting machine to an inlet of the check valve, connecting an outlet of the check valve to a grouting hole, continuously grouting cement slurry, and continuously flowing upwards in the grouting cavity until the grouting cavity is filled with cement slurry, closing the check valve, and solidifying to finish the manufacturing of the miniature precast pile for electric power.
2. A miniature precast pile for electric power according to claim 1, characterized in that the diameter of the pile body is 200-400mm.
3.A miniature precast pile for electric power according to claim 1, characterized in that the bearing capacity of the pile body under shear is 30-50kN.
4. The miniature precast pile for electric power according to claim 1, wherein the axial center of the pile body has a tensile bearing capacity of 150-180kN.
5. The miniature precast pile for electric power according to claim 1, wherein the bearing capacity of the pile shaft under compression is 500-650kN.
6. The miniature precast pile for electric power according to claim 5, wherein the pressure of the cement slurry injected from the second time of cement slurry injection is 3.8-4.2 MPa, and the pressure of the cement slurry injected after the reverse slurry stop valve is opened is 0.9-1.1 MPa.
7. A miniature precast pile for electric power according to claim 6, wherein the cement paste is composed of water, cement, an expanding agent and a water reducing agent.
8. The miniature precast pile for electric power according to claim 7, wherein the weight ratio of water, cement, expanding agent and water reducing agent in cement paste is 0.55:1.0:0.12:0.01.
9. A micro precast pile for electric power according to claim 8, wherein the material of the reinforcing member is steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110427953.6A CN115217094B (en) | 2021-04-21 | 2021-04-21 | Miniature precast pile for electric power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110427953.6A CN115217094B (en) | 2021-04-21 | 2021-04-21 | Miniature precast pile for electric power |
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| CN115217094A CN115217094A (en) | 2022-10-21 |
| CN115217094B true CN115217094B (en) | 2025-01-10 |
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| JP5875650B1 (en) * | 2014-09-10 | 2016-03-02 | 和光コンクリート工業株式会社 | Hybrid pile device |
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| CN110241813A (en) * | 2019-05-16 | 2019-09-17 | 国家电网有限公司 | A kind of buried prefabricated tubular pile of transmission line of electricity brill |
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| CN1609346A (en) * | 2003-10-20 | 2005-04-27 | 胡柏英 | Structure and construction method of a superimposed pile |
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| CN204491617U (en) * | 2015-01-19 | 2015-07-22 | 赵连平 | A kind of static pressure or hammering concrete precast pipe pile pile bottom post-grouting device |
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| CN115217094A (en) | 2022-10-21 |
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