CN109183786A - A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction method - Google Patents
A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction method Download PDFInfo
- Publication number
- CN109183786A CN109183786A CN201811199676.2A CN201811199676A CN109183786A CN 109183786 A CN109183786 A CN 109183786A CN 201811199676 A CN201811199676 A CN 201811199676A CN 109183786 A CN109183786 A CN 109183786A
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- pile body
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- plucking
- main reinforcement
- resistance
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000002787 reinforcement Effects 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000004873 anchoring Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000003780 insertion Methods 0.000 claims abstract 2
- 230000037431 insertion Effects 0.000 claims abstract 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 210000003205 muscle Anatomy 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000010412 perfusion Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 12
- 230000002411 adverse Effects 0.000 abstract description 4
- 238000005056 compaction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003739 neck Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction methods, pile body is the bored concrete pile formed after long spire is constructed using pressure injection, it is concentric in bored concrete pile to be equipped with main reinforcement, main reinforcement is fining twisted steel main reinforcement, fining twisted steel main reinforcement includes free segment and anchoring section, and anchoring section is set to the lower section of pile body, and free segment is set to the top of pile body, pile cover is connected at the top of pile body, the length at the top of pile body in insertion pile cover raft plate is not less than one times of pile body diameter.By the above-mentioned means, avoiding pile body tension from crack occur present invention saves material utilization amount, pile body durability is improved；Stake diameter is small, high for resistance to plucking cost performance；Construction method is non-Squeezing Soil Pile, avoids adverse effect of the pile body soil compaction to environment, and equipment drilling ability is strong, adapts to the various geological conditions in addition to rock, avoids the situation of hard soil layer construction of prefabricated piles difficulty；Equipment is simple, and advance and retreat field is easy, and has greater advantage in narrow space.
Description
Technical field
The present invention relates to building field, more particularly to a kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its
Construction method.
Background technique
Use regular reinforcement as main reinforcement in traditional bored concrete pile, with steel reinforcement cage spiral bar constructional reinforcement, amount of reinforcement is very
More, due to that can not apply prestressing force, pile body is easy to appear crack, poor durability.
Conventional piles are Squeezing Soil Pile, and soil compaction can not only cause adverse effect to environment, but also are encountering hard soil layer or narrower
When the rough sledding such as small space, with regard to highly difficult, advance and retreat field is very complicated for the construction of prefabricated pile, needs to expend many artificial, increases
Cost.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and
Its construction method can save material utilization amount, and pile body tension is avoided crack occur, improve pile body durability；With adaptation
In the advantage of narrow space construction.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of post-tensioned prestressing resistance to plucking is provided
Small diameter long screw pouring piles, comprising: pile body and main reinforcement, the pile body are the fillings formed after long spire is constructed using pressure injection
Stake is infused, concentric in bored concrete pile to be equipped with main reinforcement, main reinforcement is fining twisted steel main reinforcement, and fining twisted steel main reinforcement includes free segment and anchor
Gu section, anchoring section is set to the lower section of pile body, and free segment is set to the top of pile body, and pile cover is connected at the top of pile body, and pile body top is embedding
Enter one times that the length in pile cover raft plate is not less than pile body diameter.
In a preferred embodiment of the present invention, pile body diameter range is between 200mm~500mm.
In a preferred embodiment of the present invention, 1 or more fining twisted steel main reinforcements, more finish rolling are equipped in bored concrete pile
The screw-thread steel main reinforcement time is connected by connector.
In a preferred embodiment of the present invention, limit rib has been evenly arranged along pile body length direction.
In a preferred embodiment of the present invention, it is equipped with bearing plate at the top of pile body, is welded with consolidating for anchor rib on bearing plate
Determine device, anchor rib connects pile body and pile cover raft plate, while dispersing to transmit pile body anchor force.
In a preferred embodiment of the present invention, bored concrete pile is formed with concrete or mortar pressure injection.
The invention further relates to a kind of construction methods of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles, including following step
It is rapid:
1) bore stake holes, underground pierced using long spire rod bit, form stake holes, long spire bar to pierce depth then be that pile body is long
Degree；
2) be perfused, with the method for pressure injection into stake holes concrete perfusion or mortar, formed pile body；
3) it is inserted into main reinforcement, before pile body initial set, is inserted into the fining twisted steel main reinforcement processed, anchoring section and the secured glue of pile body
Knot；
4) stake is cut, earth excavation digs out stake top, cuts stake after excavating pile cover；
5) bearing plate is set, it is levelling in stake top high-strength mortar or structure glue, bearing plate, and tensioning fixation fining twisted steel are set
Main reinforcement；
6) anchor rib is installed, the fixation device of anchor rib is welded on bearing plate, and completes the fixed installation of anchor rib；
7) stake top is protected, bristle stake top circumferential concrete is laid with pile cover reinforcing bar, raft slab muscle, pours raft board concrete, that is, completes
The construction of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles.
In a preferred embodiment of the present invention, in step 2, limiter is evenly arranged along pile body.
The beneficial effects of the present invention are: the present invention using high-intensity fine rolling screw-thread steel as resistance to plucking main reinforcement, is perfused instead of tradition
Regular reinforcement main reinforcement in stake, and prestressing force is applied in main reinforcement, material utilization amount has been saved, pile body tension is avoided to split
Seam, improves pile body durability；Stake diameter is small, high for resistance to plucking cost performance；Construction method is non-Squeezing Soil Pile, avoids pile body soil compaction
Adverse effect to environment, equipment drilling ability is strong, adapts to the various geological conditions in addition to rock, avoids hard soil layer prefabricated pile
The case where constructional difficulties；Equipment is simple, and advance and retreat field is easy, and has greater advantage in narrow space.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is the structural schematic diagram of one preferred embodiment of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles of the present invention.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Referring to Fig. 1, the embodiment of the present invention includes:
A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles, comprising: pile body 1 and main reinforcement 2, the pile body 1 is long spire
The bored concrete pile 1 formed after construction using pressure injection, concentric in bored concrete pile 1 to be equipped with main reinforcement 2, main reinforcement 2 is fining twisted steel master
Muscle.
Rolling screw-thread steel main reinforcement 2 includes free segment and anchoring section 2-1, and anchoring section is set to the lower section of pile body 1, and free segment is set to stake
The top of body 1 is connected with pile cover at the top of pile body 1, and the length in pile cover raft plate is embedded at the top of pile body 1 not less than 1 diameter of pile body
One times.For dispersing raft Stress of plate interior, the durability of uplift pile is improved.
1 or more fining twisted steel main reinforcements are equipped in bored concrete pile, more 2 times of fining twisted steel main reinforcement pass through connector
Connection, intensity are high, it is possible to reduce with muscle amount.
Limit rib 3 has been evenly arranged along 1 length direction of pile body.So that main reinforcement 2 is always positioned at 1 center of pile body, avoids deviateing.
It is equipped with bearing plate 4 at the top of pile body 1, the fixation device of anchor rib is welded on bearing plate 4, anchor rib 5 connects pile body 1
With pile cover raft plate, while disperse transmit 1 anchor force of pile body.
Bored concrete pile is formed with concrete or mortar pressure injection.1 diameter range of pile body is between 200mm~500mm.Stake
Diameter is small, high for resistance to plucking cost performance, has greater advantage in narrow space.
Bored concrete pile of the invention, as main reinforcement 2, is applied with prestressing force, has saved material use using high-strength fining twisted steel
Amount, avoids 1 tension of pile body from crack occur, improves 1 durability of pile body.
According to geologic parameter and load requirement before the construction of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles, cloth is carried out
Stake, stake diameter, stake are long, arrangement of reinforcement calculates.Crack resisting calculation is carried out, determines freedom length, prestress data.Process stake top anchoring dress
It sets, anchor rib, fining twisted steel.
Concrete construction method, comprising the following steps:
1) bore stake holes, underground pierced using long spire rod bit, form stake holes, long spire bar to pierce depth then be that pile body 1 is long
Degree；
2) be perfused, with the method for pressure injection into stake holes concrete perfusion or mortar, form pile body 1, and uniform along pile body 1
Arrange limiter；
3) it is inserted into main reinforcement 2, before 1 initial set of pile body, is inserted into the fining twisted steel main reinforcement 2 processed, anchoring section 2-1 and pile body 1
It is securely cementing；
4) stake is cut, earth excavation digs out stake top, cuts stake after excavating pile cover；
5) bearing plate is set, it is levelling in stake top high-strength mortar or structure glue, bearing plate 4, and tensioning fixation finish rolling screw thread are set
Steel main reinforcement 2；
6) anchor rib is installed, the fixation device of anchor rib is welded on bearing plate 4, and completes the fixed installation of anchor rib 5；
7) stake top is protected, bristle stake top circumferential concrete is laid with pile cover reinforcing bar, raft slab muscle, pours raft board concrete, that is, completes
The construction of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles.
Construction method of the invention is non-Squeezing Soil Pile, avoids adverse effect of 1 soil compaction of pile body to environment, and equipment creeps into energy
Power is strong, adapts to the various geological conditions in addition to rock, avoids the situation of hard soil layer construction of prefabricated piles difficulty；Equipment is simple, into
It is easy to withdraw from the arena.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (8)
1. a kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles characterized by comprising pile body and main reinforcement, the stake
Body is the bored concrete pile formed after long spire construction using pressure injection, and concentric in bored concrete pile to be equipped with main reinforcement, main reinforcement is finish rolling spiral shell
Line steel main reinforcement, fining twisted steel main reinforcement include free segment and anchoring section, and anchoring section is set to the lower section of pile body, and free segment is set to pile body
Top, pile cover is connected at the top of pile body, the length at the top of pile body in insertion pile cover raft plate is not less than one times of pile body diameter.
2. post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 1, which is characterized in that pile body diameter
Range is between 200mm~500mm.
3. post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 1, which is characterized in that in bored concrete pile
Equipped with 1 or more fining twisted steel main reinforcements, more fining twisted steel main reinforcement times are connected by connector.
4. post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 1, which is characterized in that long along pile body
Degree direction has been evenly arranged limit rib.
5. post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 1, which is characterized in that at the top of pile body
Equipped with bearing plate, the fixation device of anchor rib is welded on bearing plate, anchor rib connects pile body and pile cover raft plate, while dispersing to pass
Pass pile body anchor force.
6. post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 1, which is characterized in that bored concrete pile is
It is formed with concrete or mortar pressure injection.
7. the construction method of -6 any post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 1,
It is characterized in that, comprising the following steps:
1) bore stake holes, underground pierced using long spire rod bit, form stake holes, long spire bar to pierce depth then be that pile body is long
Degree；
2) be perfused, with the method for pressure injection into stake holes concrete perfusion or mortar, formed pile body；
3) it is inserted into main reinforcement, before pile body initial set, is inserted into the fining twisted steel main reinforcement processed, anchoring section and the secured glue of pile body
Knot；
4) stake is cut, earth excavation digs out stake top, cuts stake after excavating pile cover；
5) bearing plate is set, it is levelling in stake top high-strength mortar or structure glue, bearing plate, and tensioning fixation fining twisted steel are set
Main reinforcement；
6) anchor rib is installed, the fixation device of anchor rib is welded on bearing plate, and completes the fixed installation of anchor rib；
7) stake top is protected, bristle stake top circumferential concrete is laid with pile cover reinforcing bar, raft slab muscle, pours raft board concrete, that is, completes
The construction of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles.
8. the construction method of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles according to claim 7, feature exist
In being evenly arranged limiter along pile body in step 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811199676.2A CN109183786A (en) | 2018-10-16 | 2018-10-16 | A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811199676.2A CN109183786A (en) | 2018-10-16 | 2018-10-16 | A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109183786A true CN109183786A (en) | 2019-01-11 |
Family
ID=64945101
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811199676.2A Pending CN109183786A (en) | 2018-10-16 | 2018-10-16 | A kind of post-tensioned prestressing resistance to plucking small diameter long screw pouring piles and its construction method |
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| Country | Link |
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| CN (1) | CN109183786A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288125A (en) * | 2022-08-15 | 2022-11-04 | 上海同人里岩土工程技术有限公司 | Prestressed cast-in-situ bored pile and construction method thereof |
| CN115467340A (en) * | 2022-09-28 | 2022-12-13 | 上海同人里岩土工程技术有限公司 | Foundation pit enclosure prefabricated component and construction method thereof |
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| CN107338793A (en) * | 2017-07-20 | 2017-11-10 | 重庆交通大学 | A kind of cast-in-place screw rod prestress pulling resistant stake and its construction method |
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2018
- 2018-10-16 CN CN201811199676.2A patent/CN109183786A/en active Pending
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| CN101029488A (en) * | 2007-04-12 | 2007-09-05 | 北京建材地质工程公司 | Partial adhered prestressed pile against drawing and floating and its construction |
| CN101629418A (en) * | 2009-08-03 | 2010-01-20 | 天津市建筑科学研究院 | Post-tensioned prestressing cast pile and construction method thereof |
| CN203188202U (en) * | 2013-04-28 | 2013-09-11 | 刘正军 | Pressure type high bearing capacity composite uplift pile |
| CN103510510A (en) * | 2013-10-22 | 2014-01-15 | 山东鸿顺集团有限公司 | Reinforced long spiral drilling concrete grouting pile and construction method thereof |
| CN203729291U (en) * | 2014-02-26 | 2014-07-23 | 苏州设计研究院股份有限公司 | Tension cast-in-place pile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288125A (en) * | 2022-08-15 | 2022-11-04 | 上海同人里岩土工程技术有限公司 | Prestressed cast-in-situ bored pile and construction method thereof |
| CN115467340A (en) * | 2022-09-28 | 2022-12-13 | 上海同人里岩土工程技术有限公司 | Foundation pit enclosure prefabricated component and construction method thereof |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190111 |
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