CN114922166A - Solid precast pile with enhanced pulling resistance - Google Patents
Solid precast pile with enhanced pulling resistance Download PDFInfo
- Publication number
- CN114922166A CN114922166A CN202210315611.XA CN202210315611A CN114922166A CN 114922166 A CN114922166 A CN 114922166A CN 202210315611 A CN202210315611 A CN 202210315611A CN 114922166 A CN114922166 A CN 114922166A
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- Prior art keywords
- pile
- steel
- precast pile
- recited
- plucking
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- 239000007787 solid Substances 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 75
- 239000010959 steel Substances 0.000 claims abstract description 75
- 238000004873 anchoring Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000010008 shearing Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- 239000011440 grout Substances 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000010426 asphalt Substances 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
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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
- E02D5/58—Prestressed concrete piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
Abstract
The invention relates to a solid precast pile with enhanced pulling resistance, which comprises an upper pile and a lower pile, wherein a first anchoring cavity is arranged in the lower pile, a first cementing material layer is injected into the first anchoring cavity, profile steel is embedded in the upper pile, the other end of the profile steel is positioned in the first anchoring cavity and is fixed through the first cementing material layer, at least four tensioning pieces are arranged in the upper pile and the lower pile, and the tensioning pieces are positioned at the periphery of the upper pile and the lower pile. The invention adopts the profile steel plug-in type grout anchor, and adds a composite connection pile connecting mode of connecting at least four corners through connecting pieces, the stress performance is reliable, the connection performance of the foundation pile in the pile sinking process is ensured, the connection strength of the foundation pile joint can be supplemented and enhanced, more importantly, the pulling resistance and the horizontal shearing force are greatly improved, and meanwhile, the corrosion resistance can also be improved.
Description
Technical Field
The invention relates to the field of buildings, in particular to a solid precast pile with enhanced pulling resistance.
Background
The reinforced concrete solid pile is widely popularized in the field of buildings because the shear strength and the lateral stiffness of the pile body can be greatly enhanced due to the solid structure of the reinforced concrete solid pile. The existing pile splicing method of the solid square pile mainly adopts welding connection, for example, the invention patent application with the patent number of 202010780755.3 adopts profile steel inserted type slurry anchor connection, and an upper end plate and a lower end plate are connected in a welding mode.
When the pile body is used, the pile body is generally driven into the ground, the damage to the pipe pile is serious due to the weathering of the wet area of the soil and the soil rock stratum of the different soil of the ground, the concrete is cracked and even falls off, the bearing capacity of the pipe pile is weakened, the durability is deteriorated, the pipe body of the pipe pile must be concentric and has better verticality in the connection process for welding, the connection hoop is poor in calibration, the pipe pile cannot be finely matched and connected, and the welding difficulty of the end plate is caused. And the tubular pile end plate structure connected by welding is not stable enough, and the anti-pulling performance, the horizontal shearing force and the like of the end plate cannot be well ensured. Accordingly, the present invention is set forth.
Disclosure of Invention
In view of the above technical problems in the prior art, an object of the present invention is to provide a solid precast pile with enhanced resistance to plucking, which employs a profile steel insertion type grout anchor, and adds a composite connection pile-connecting manner in which at least four corners are connected by connecting members, so that the force-bearing performance is reliable, the connection performance of a foundation pile in a pile-sinking process is ensured, the connection strength of a joint of the foundation pile can be supplemented and enhanced, and more importantly, the resistance to plucking and the horizontal shearing force are greatly improved, and the corrosion resistance is also improved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a solid precast pile of resistance to plucking performance reinforcing, includes upper segment stake and lower segment stake, lower segment stake embeds anchor cavity one, it has cementitious material layer one to pour into in the anchor cavity one, pre-buried in the upper segment stake has shaped steel, and the other end of shaped steel is located anchor cavity one to it is fixed through cementitious material layer one, be equipped with four at least tension members in upper segment stake and the lower segment stake, tension member is located upper segment stake and lower segment stake all around.
The tensioning member comprises an upper tensioning member and a lower tensioning member which are connected through a connecting rib, an anchoring cavity II is arranged in the lower tensioning member, a gel material layer II is injected into the anchoring cavity II, the upper portion of the connecting rib is located in the upper tensioning member, the lower portion of the connecting rib is located in the anchoring cavity II, and the connecting rib is fixed through the gel material layer II.
The splice bar includes the splice bar main part, the both ends of splice bar main part are equipped with card platform and lower card platform respectively.
The inside of going up the stretch-draw piece is equipped with the splice bar locking cap, go up the card platform and be located the top of splice bar locking cap to through splice bar locking cap joint.
Go up the tensioning member and be equipped with the internal thread, go up the ka tai and be equipped with the external screw thread, external screw thread and internal thread meshing.
The upper portion card of going up the tensioning piece is equipped with the prestressing steel bar, the lower part card of tensioning piece is equipped with down the prestressing steel bar down, and the lower part internal diameter of tensioning piece is greater than the upper portion internal diameter down.
The first anchoring cavity is in a horn shape with a large inner opening and a small inner opening.
The shaped steel include the shaped steel body, the both ends of shaped steel body all are equipped with the end closure board, and are equipped with a plurality of reinforcing rib on the shaped steel body.
The body is hollow, and plain concrete and/or mortar are poured into the body.
The section steel is a round steel pipe, a square steel pipe, a polygonal steel pipe, channel steel, angle steel, H-shaped steel, T-shaped steel, I-shaped steel or combined section steel.
The invention has the following beneficial effects:
according to the solid precast pile with enhanced pulling resistance, the section steel is connected with the lower section pile by the slurry anchor after being inserted, the stress performance is reliable, and the large-area section steel enables the joint of the pile to be no longer the weak point of a foundation pile.
More importantly, the invention adopts a supplementary connection mode of connection of the tensioning members, the tensioning members adopt an upper tensioning member structure and a lower tensioning member structure, prestressed steel bars are added on the upper tensioning member and the lower tensioning member, the upper tensioning member and the lower tensioning member are connected through connecting ribs, the connecting ribs can be deformed steel bars and are directly connected in a threaded mode, and a clamping table structure can be adopted, the upper tensioning member and the lower tensioning member are clamped with a connecting rib fixing cap of the upper tensioning member, and the upper tensioning member and the lower tensioning member cannot be pulled out after being clamped in the upper tensioning member during connection, so that the pulling resistance is greatly enhanced, the connection performance of the foundation pile in the pile sinking process can be ensured, the connection strength and the horizontal shearing force of a foundation pile joint can be supplemented and enhanced, the mechanical property of the joint is stronger, and the corrosion resistance is also improved.
Drawings
The invention is described in further detail below with reference to the figures and the detailed description.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention without the tension members attached;
fig. 3 is a schematic structural view of a tension member in embodiment 1 of the present invention;
fig. 4 is a schematic structural view of an upper tension member in embodiment 2 of the present invention;
FIG. 5 is a schematic structural view of the section steel of the present invention;
wherein:
1 is an upper pile, 2 is a lower pile, 3 is an anchoring cavity I, 4 is a cementing material layer I,
5 is section steel, 51 is a section steel body, 52 is a head plate, 53 is a reinforcing rib,
6 is a tensioning piece, 61 is an upper tensioning piece, 62 is a lower tensioning piece, 63 is an anchoring cavity II, 64 is a gel material layer II, 65 is a connecting rib main body, 66 is an upper clamping table, 67 is a lower clamping table, 68 is a connecting rib fixing cap, 69 is an internal thread, 610 is an external thread, 611 is an upper prestressed steel bar, 612 is a lower prestressed steel bar, and 613 is a screw.
Detailed Description
The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited thereto.
Example 1
As shown in fig. 1-3 and 5, the solid precast pile with enhanced pulling resistance of the present invention comprises an upper pile 1 and a lower pile 2, a first anchoring cavity 3 is arranged in the lower pile 23, a first cementitious material layer 4 is injected into the first anchoring cavity 3, a profile steel 5 is embedded in the upper pile 1, the other end of the profile steel 5 is positioned in the first anchoring cavity 3 and fixed by the first cementitious material layer 4, at least four tensioning members 6 are arranged in the upper pile 1 and the lower pile 2, and the tensioning members 6 are positioned around the upper pile 1 and the lower pile 2. In the present invention, in order to further improve the pulling-out resistance, a plurality of tension members 6 may be provided, such as: four corners are respectively provided with 1, and the total number is four; the four sides are respectively provided with 3 (including 1 end part) and 8; four sides are respectively provided with 4 (including 1 end part) and 12; the number of the tension pieces 6 is more, the pulling resistance is better, and the tension pieces can be selected according to actual conditions.
Preferably, the tension member 6 in this embodiment 1 includes an upper tension member 61 and a lower tension member 62 connected by a connecting rib, a second anchoring cavity 63 is provided in the lower tension member 62, a second gel material layer 64 is injected into the second anchoring cavity 63, and the upper portion of the connecting rib is located in the upper tension member 61, the lower portion of the connecting rib is located in the second anchoring cavity 63, and the connecting rib is fixed by the second gel material layer 64. The splice bar includes splice bar main part 65, and the both ends of splice bar main part 65 are equipped with respectively and block platform 66 and lower calorie of platform 67. The inside of the upper tensioning piece 61 is provided with a connecting rib fixing cap 68, and the upper clamping table 66 is positioned above the connecting rib fixing cap 68 and clamped by the connecting rib fixing cap 68.
The upper portion of the upper tensioning piece 61 is clamped with an upper prestress steel bar 611, the lower portion of the lower tensioning piece 62 is clamped with a lower prestress steel bar 612, the inner diameter of the lower portion of the lower tensioning piece 62 is larger than that of the upper portion, and the pulling resistance is greatly increased compared with a columnar structure like a wine bottle structure.
More preferably, the anchoring cavity one 3 in the embodiment 1 is in a trumpet shape with a large inner opening, so that the bonding force between the anchoring cavity one 3 and the section steel 5 is strongest and the stress performance is optimal.
In this embodiment 1, a screw 613 is disposed in the lower tension member 62, and the lower prestressed steel bar 612 is clamped above the screw 613.
The section steel 5 comprises a section steel body 51, both ends of the section steel body 51 are provided with end sealing plates 52, and the section steel body 51 is provided with a plurality of reinforcing ribs 53. The steel body 51 may be hollow and filled with plain concrete and/or mortar. And the section steel 5 can be a round steel pipe, a square steel pipe, a polygonal steel pipe, a channel steel, an angle steel, an H-shaped steel, a T-shaped steel, an I-shaped steel or a combined section steel.
The first cementing material layer 4 and the second cementing material layer 64 can be one or more of inorganic cementing materials such as concrete, cement mortar, cement paste, grouting material, lime, gypsum and the like, or organic cementing materials such as asphalt, natural or synthetic resin and the like, such as a mixture of gypsum and asphalt.
Example 2
As shown in fig. 4, the upper tension member 61 of this embodiment 2 is provided with an internal thread 69, the upper locking platform 66 is provided with an external thread 610, and the external thread 610 is engaged with the internal thread 69, so that the pulling resistance can be improved without installing the connecting rib fixing cap 68.
Other structures and connection manners of embodiment 2 are the same as those of embodiment 1, and are not described herein.
The section steel 5 is inserted and then connected with the lower pile section 2 by adopting a slurry anchor, the stress performance is reliable, and the large-area section steel 5 ensures that the joint of the pile is no longer the weak point of the foundation pile.
More importantly, the invention adopts a supplementary connection mode of connecting the tension members 6, the tension members 6 adopt an upper tension member structure and a lower tension member structure, prestressed steel bars are added on the upper tension member and the lower tension member, the upper tension member and the lower tension member are connected through connecting ribs, the connecting ribs can also be deformed steel bars, the upper tension member and the lower tension member are directly connected in a threaded mode, a clamping table structure can also be adopted, the upper tension member and the lower tension member are clamped with a connecting rib fixing cap of the upper tension member, the upper tension member and the lower tension member can not be pulled out after being clamped in the upper tension member during connection, the pulling resistance is greatly enhanced, the connection performance of the foundation pile in the pile sinking process can be ensured, the connection strength and the horizontal shearing force of the foundation pile joint can also be supplemented and enhanced, the mechanical property of the joint is stronger, and the corrosion resistance is also improved.
The above-mentioned embodiments are only used for explaining the inventive concept of the present invention, and do not limit the protection of the claims of the present invention, and any insubstantial modifications of the present invention using this concept shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a solid precast pile of resistance to plucking performance reinforcing, includes upper segment stake and lower segment stake, lower segment stake embeds anchor cavity one, it has cementitious material layer one to pour into in the anchor cavity one, pre-buried shaped steel in the upper segment stake, the other end of shaped steel is located anchor cavity one to it is fixed through cementitious material layer one, its characterized in that: at least four tensioning pieces are arranged in the upper section pile and the lower section pile and are positioned around the upper section pile and the lower section pile.
2. A solid precast pile with enhanced uplift resistance as recited in claim 1, wherein: the tensioning member comprises an upper tensioning member and a lower tensioning member which are connected through a connecting rib, an anchoring cavity II is arranged in the lower tensioning member, a gel material layer II is injected into the anchoring cavity II, the upper portion of the connecting rib is located in the upper tensioning member, the lower portion of the connecting rib is located in the anchoring cavity II, and the connecting rib is fixed through the gel material layer II.
3. A solid precast pile with enhanced uplift resistance as recited in claim 2, wherein: the splice bar includes the splice bar main part, the both ends of splice bar main part are equipped with card platform and lower card platform respectively.
4. A solid precast pile with enhanced resistance to plucking as recited in claim 3, wherein: the inside of going up the stretch-draw piece is equipped with the splice bar locking cap, go up the card platform and be located the top of splice bar locking cap to through splice bar locking cap joint.
5. A solid precast pile with enhanced resistance to plucking as recited in claim 3, wherein: the upper tensioning piece is provided with an internal thread, the upper clamping table is provided with an external thread, and the external thread is meshed with the internal thread.
6. A solid precast pile with enhanced resistance to plucking as recited in claim 2, wherein: the upper portion card of going up the tensioning piece is equipped with the prestressing steel bar, the lower part card of tensioning piece is equipped with down the prestressing steel bar down, and the lower part internal diameter of tensioning piece is greater than the upper portion internal diameter down.
7. A solid precast pile with enhanced resistance to plucking as recited in claim 1, wherein: the first anchoring cavity is in a horn shape with a large inner opening and a small inner opening.
8. A solid precast pile with enhanced resistance to plucking as recited in claim 1, wherein: the shaped steel include the shaped steel body, the both ends of shaped steel body all are equipped with the end sealing board, and are equipped with a plurality of reinforcing rib on the shaped steel body.
9. A solid precast pile with enhanced resistance to plucking as recited in claim 8, wherein: the body is hollow, and plain concrete and/or mortar are poured into the body.
10. A solid precast pile with enhanced resistance to plucking as recited in claim 8, wherein: the section steel is a round steel pipe, a square steel pipe, a polygonal steel pipe, channel steel, angle steel, H-shaped steel, T-shaped steel, I-shaped steel or combined section steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315611.XA CN114922166A (en) | 2022-03-29 | 2022-03-29 | Solid precast pile with enhanced pulling resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315611.XA CN114922166A (en) | 2022-03-29 | 2022-03-29 | Solid precast pile with enhanced pulling resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114922166A true CN114922166A (en) | 2022-08-19 |
Family
ID=82805568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210315611.XA Pending CN114922166A (en) | 2022-03-29 | 2022-03-29 | Solid precast pile with enhanced pulling resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114922166A (en) |
-
2022
- 2022-03-29 CN CN202210315611.XA patent/CN114922166A/en active Pending
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