CN106120721A - Multi-layer bottom-expanding manual hole digging cast-in-place pile and construction method - Google Patents
Multi-layer bottom-expanding manual hole digging cast-in-place pile and construction method Download PDFInfo
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- CN106120721A CN106120721A CN201610698114.7A CN201610698114A CN106120721A CN 106120721 A CN106120721 A CN 106120721A CN 201610698114 A CN201610698114 A CN 201610698114A CN 106120721 A CN106120721 A CN 106120721A
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- pile
- base expanding
- steel reinforcement
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- multilamellar
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
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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
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
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- 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 relates to a multi-layer expanded-base manual hole-digging cast-in-place pile, wherein a pile body of the cast-in-place pile comprises at least two pile-end holding layers, a reinforcement cage penetrating and inserted into the pile-end holding layers and an annular reinforcement framework, each holding layer comprises a frustum-shaped inner cavity, a concrete protective wall is poured on the inner cavity wall, the bottom of an expanded head of each holding layer is annular and is provided with the reinforcement framework, and the reinforcement cage penetrates through the reinforcement framework and is fixedly connected with the reinforcement framework through a connecting rib. The beneficial effects are that: the vertical bearing capacity of the single pile can be improved, and the horizontal bearing capacity and the uplift bearing capacity of the pile are greatly improved. The pile has the advantages of high construction efficiency, short construction period, good pile body quality, low construction cost, higher economy, innovativeness and social benefit.
Description
Technical field
The invention belongs to Geotechnical Engineering field, particularly relate to a kind of multilamellar base expanding and base expanding manually digging hole filling pile and construction method.
Background technology
When there is multilamellar bearing course at pile end in pile body length range, traditional club-footed pile, only an expansion is being set at the bottom of stake
Major part, vertical bearing capacity of single pile is low.Traditional artificial club-footed pile, expanded head part position generally the most not arrangement of reinforcement, stake horizontal bearing capacity and anti-
Pull out bearing capacity ratio relatively low.Traditional artificial digging pile plays multilamellar supporting course the most well and increases the advantage of bearing capacity of single pile,
The bearing capacity of single pile that unit concrete provides is less, and cost performance is relatively low.Construction costs cost is high.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the present invention proposes a kind of multilamellar base expanding and base expanding manually digging hole filling pile and construction party
Method, is specifically implemented by below scheme:
Described multilamellar base expanding and base expanding manually digging hole filling pile, the pile body of described bored concrete pile includes at least two bearing course at pile end, wears
Insert in the steel reinforcement cage of described bearing course at pile end and the framework of steel reinforcement of annular, each supporting course contains the inner chamber of frustum, and
Having poured concrete guard wall on internal chamber wall, the bottom of the enlarged footing of each supporting course ringwise and is provided with described framework of steel reinforcement,
Described steel reinforcement cage through framework of steel reinforcement and pass through dowel affixed with framework of steel reinforcement.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, described framework of steel reinforcement is divided into upper and lower two-layer,
The lower floor of described framework of steel reinforcement is positioned on bottom corresponding bearing course at pile end enlarged footing, and framework of steel reinforcement is by the framework of steel reinforcement of some sectors
Block forms, and framework of steel reinforcement block is made up of the main muscle of block, and the main muscle of block, along the radial distribution of framework of steel reinforcement block, is in steel hoop skeleton same
One radial position and lay respectively at bilevel piece of main muscle of framework of steel reinforcement and form a chunk main muscle group, each piece of main muscle group is respectively
By two dowels and steel reinforcement cage corresponding connection of main muscle.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, described framework of steel reinforcement block is by least two chunks
Main muscle group forms, and the short muscle of connection that the neighboring edge muscle of adjacent framework of steel reinforcement block is provided with crotch by some two ends realizes even
Connecing, described edge muscle realizes fixing with being connected short muscle by metal binding wire.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, the two ends of described piece of main muscle are respectively welded
Nut.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, described dowel one end is with crotch
Connecting end, the other end is fixing end.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, the main muscle of described steel reinforcement cage corresponds respectively to
Bottom the enlarged footing of each bearing course at pile end, corresponding framework of steel reinforcement upper water horizontal line be respectively welded two stiffening rings.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, described dowel is connected to the main muscle of corresponding blocks
Two nuts, and fixing end weld with dowel, and the crotch connecting end is connected in described stiffening ring, and passes through metal binding wire admittedly
Fixed.
The design further of described multilamellar base expanding and base expanding manually digging hole filling pile is, the lower floor of described framework of steel reinforcement and corresponding stake
The concrete cushion of annular it is provided with between bottom end supporting course enlarged footing.
The construction method of described multilamellar base expanding and base expanding manually digging hole filling pile, comprises the steps:
1) measuring of stake position, then hand excavation's stake holes are carried out, and pouring reinforcement concrete retaining wall；
2) piecemeal double steel bar skeleton and steel reinforcement cage are made；
3) breast wall concrete intensity continues excavation stake holes after reaching to set intensity；
4) repeat step 1), step 3), carry out current bearing course at pile end base expanding and base expanding by design size；
5) pour base expanding and base expanding end ring shape concrete cushion, and lay double steel bar skeleton block and by adjacent for adjacent framework of steel reinforcement block
Near edge muscle forms the double steel bar skeleton of annular by steel wire lashing, completes the structure of current bearing course at pile end；
6) repeat step 3), step 4), step 5), complete the structure of all bearing course at pile end；
7) lay steel reinforcement cage, main for double steel bar skeleton muscle is installed dowel with the main muscle of steel reinforcement cage and metal binding wire will connect
Muscle is fixed with stiffening ring on fixing steel reinforcement cage；
8) downcomer, casting concrete pile.
The design further of the construction method of described multilamellar base expanding and base expanding manually digging hole filling pile is, described step 3) described in
Set intensity as 70%.
Beneficial effects of the present invention
The multilamellar base expanding and base expanding manually digging hole filling pile of the present invention, make full use of stake long in the range of have the preferable stake of multilamellar to support power
Layer advantage, greatly improves pile bearing capacity.This stake solves a tradition club-footed pile expanded head part position not arrangement of reinforcement difficult problem, pacifies at multilamellar reaming
Dress framework of steel reinforcement is also firmly connected with steel reinforcement cage, not only can improve vertical bearing capacity of single pile but also substantially increase the horizontal bearing capacity of stake
With anti-pulling capacity.This pile driving construction efficiency is high, short construction period, and pile quality is good, and construction costs is low, have higher economy,
Novelty and social benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of the multilamellar base expanding and base expanding manually digging hole filling pile of the present invention.
Fig. 2 is the top view of multilamellar base expanding and base expanding manually digging hole filling pile.
Fig. 3 is enlarged diagram at the A of the top view of Fig. 2 multilamellar base expanding and base expanding manually digging hole filling pile.
Fig. 4 is the BB sectional view of the top view of Fig. 2 multilamellar base expanding and base expanding manually digging hole filling pile.
Fig. 5 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step one.
Fig. 6 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step three.
Fig. 7 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step four.
Fig. 8 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step five.
Fig. 9 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step six.
Figure 10 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step seven.
Figure 11 is the schematic diagram of multilamellar base expanding and base expanding construction of manual-excavation cast-in-place pile method step eight.
Detailed description of the invention
Below in conjunction with the accompanying drawings technical scheme is further illustrated.
Such as Fig. 1, the multilamellar base expanding and base expanding manually digging hole filling pile of the present embodiment, the pile body master of bored concrete pile is three bearing course at pile end
6 designs, have multilamellar preferable bearing course at pile end advantage, greatly improve pile bearing capacity in the range of utilizing stake long.In order to improve list
Pile vertical carrying capacity, horizontal bearing capacity and anti-pulling capacity, the present embodiment arranges the reinforcing bar of annular at each bearing course at pile end
Skeleton 1.The steel reinforcement cage 2 of bearing course at pile end will be interspersed in through framework of steel reinforcement 1.Containing frustum in each bearing course at pile end 6
Inner chamber 4, and on internal chamber wall, poured concrete guard wall 5.The bottom of the enlarged footing of each supporting course ringwise and is provided with reinforcing bar
Skeleton 1.The main muscle of steel reinforcement cage is vertically distributed and affixed with framework of steel reinforcement by dowel.Steel reinforcement cage 2 is in cylinder.
Such as Fig. 2, framework of steel reinforcement is divided into upper and lower two-layer.The lower floor of framework of steel reinforcement 1 is positioned at the bottom of corresponding bearing course at pile end enlarged footing
In portion.For the ease of installation and the carrying of framework of steel reinforcement, the present embodiment framework of steel reinforcement 1 is depended on by six fan-shaped framework of steel reinforcement blocks 11
Secondary connecting composition, distribute and bright be not limited to six pieces, other can repeat no more with situation the present embodiment of equivalent.Framework of steel reinforcement block
Being made up of the main muscle of block, the main muscle of block is along the radial distribution of framework of steel reinforcement block.It is in the same radial position of steel hoop skeleton and difference
The main muscle of block being positioned at framework of steel reinforcement upper and lower two-layer end face forms a chunk main muscle group 15, sees Fig. 4.Each piece of main muscle group 15 is respectively
By two dowels 3 and steel reinforcement cage 2 corresponding connection of main muscle 21.The block main muscle quantity of framework of steel reinforcement monolayer and steel reinforcement cage
Main muscle quantity identical.
Further, such as Fig. 3, framework of steel reinforcement block 11 is made up of the three main muscle of chunk 15, distributes and bright is not limited to three groups, and other can
Repeat no more with situation the present embodiment of equivalent.The neighboring edge muscle 14 of adjacent framework of steel reinforcement block 11 is by some two ends
The connection short muscle 13 being provided with crotch realizes connecting, and edge muscle 14 passes through at crotch and the edge connecting short muscle 13 with being connected short muscle 13
On muscle 14, metal binding wire realizes fixing.
Such as Fig. 4, the two ends of the main muscle of block 15 are respectively welded nut 121.One end of dowel 3 is the connection with crotch 31
End 32, the other end is fixing end 33.The main muscle 21 of steel reinforcement cage 2 corresponds respectively to bottom the enlarged footing of each bearing course at pile end 6, right
Framework of steel reinforcement upper water horizontal line is answered to be respectively welded two stiffening rings 211.Dowel 3 is connected to two nuts of the main muscle of corresponding blocks 12
In 121, and fixing end 33 welds with dowel 3.The crotch 31 connecting end 32 is connected in stiffening ring 211, and by colligation steel
Silk is fixing.
The lower floor of framework of steel reinforcement is provided with annular concrete cushion between bottom corresponding bearing course at pile end enlarged footing.Annular
The width of concrete cushion i.e. enlarged footing radius is 100mm with the difference of stake radius.The diameter of annular concrete bed course inner ring with under
The identical diameter slightly larger than steel reinforcement cage 2 cross section of bore of one layer of bearing course at pile end.
The present embodiment provides a kind of corresponding construction method according to above-mentioned multilamellar base expanding and base expanding manually digging hole filling pile, including
Following steps:
1) measuring of stake position, then hand excavation's stake holes are carried out, and pouring reinforcement concrete retaining wall, such as Fig. 5.
2) piecemeal double steel bar skeleton and steel reinforcement cage are made.
3) breast wall concrete intensity continues excavation stake holes, such as Fig. 6 after reaching to set intensity.
4) repeat step 1), step 3), carry out current bearing course at pile end base expanding and base expanding by design size, such as Fig. 7.
5) pour base expanding and base expanding end ring shape concrete cushion, and lay double steel bar skeleton block and by adjacent for adjacent framework of steel reinforcement block
Near edge muscle forms the double steel bar skeleton of annular by steel wire lashing, completes the structure of current bearing course at pile end, such as Fig. 8.
6) repeat step 3), step 4), step 5), complete the structure of all bearing course at pile end, such as Fig. 9.
7) lay steel reinforcement cage, main for double steel bar skeleton muscle is installed dowel with the main muscle of steel reinforcement cage and metal binding wire will connect
Muscle is fixed with stiffening ring on fixing steel reinforcement cage, is arc surface, sees Figure 10 bottom the base expanding and base expanding of the bottom.
8) downcomer, casting concrete pile, see Figure 11.
The scheme being more highly preferred to is: step 3) in set intensity as 70%.
The multilamellar base expanding and base expanding manually digging hole filling pile of the present embodiment, make full use of stake long in the range of have the preferable stake of multilamellar to support
Power layer advantage, greatly improves pile bearing capacity.This stake solves a tradition club-footed pile expanded head part position not arrangement of reinforcement difficult problem, at multilamellar reaming
Framework of steel reinforcement it is installed and is firmly connected with steel reinforcement cage, not only can improve vertical bearing capacity of single pile but also substantially increase the horizontal bearing of stake
Power and anti-pulling capacity.This pile driving construction efficiency is high, and short construction period, pile quality is good, and construction costs is low, has higher economy
Property, novelty and social benefit.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited to this, appoints
What those familiar with the art is in the technical scope that the invention discloses, according to technical scheme and basis thereof
Inventive concept equivalent or change in addition, all contains within protection scope of the present invention.
Claims (10)
1. a multilamellar base expanding and base expanding manually digging hole filling pile, it is characterised in that the pile body of described bored concrete pile includes that at least two stake supports
Power layer, it is interspersed in the steel reinforcement cage of described bearing course at pile end and the framework of steel reinforcement of annular, containing frustum in each supporting course
Inner chamber, and on internal chamber wall, poured concrete guard wall, the bottom of the enlarged footing of each supporting course ringwise and is provided with described steel
Muscles and bones frame, described steel reinforcement cage through framework of steel reinforcement and pass through dowel affixed with framework of steel reinforcement.
Multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 1, it is characterised in that described framework of steel reinforcement is divided into,
Lower two-layer, the lower floor of described framework of steel reinforcement is positioned on bottom corresponding bearing course at pile end enlarged footing, and framework of steel reinforcement is by some sectors
Framework of steel reinforcement block forms, and framework of steel reinforcement block is made up of the main muscle of block, and the main muscle of block, along the radial distribution of framework of steel reinforcement block, is in annular steel
The same radial position of muscles and bones frame and lay respectively at bilevel piece of main muscle of framework of steel reinforcement and form a chunk main muscle group, each piece of master
Muscle group is respectively by two dowels and steel reinforcement cage corresponding connection of main muscle.
Multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 2, it is characterised in that described framework of steel reinforcement block is by extremely
Few two chunks main muscle group composition, the neighboring edge muscle of adjacent framework of steel reinforcement block is provided with the short muscle of connection of crotch by some two ends
Realizing connecting, described edge muscle realizes fixing with being connected short muscle by metal binding wire.
4. the multilamellar base expanding and base expanding manually digging hole filling pile stated according to claim 2, it is characterised in that the two ends of described piece of main muscle are respectively
It is welded with nut.
Multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 4, it is characterised in that described dowel one end is with curved
The connection end of hook, the other end is fixing end.
Multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 5, it is characterised in that the main muscle of described steel reinforcement cage is the most right
Should bottom the enlarged footing of each bearing course at pile end, corresponding framework of steel reinforcement upper water horizontal line be respectively welded two stiffening rings.
Multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 6, it is characterised in that described dowel is connected to corresponding blocks
Two nuts of main muscle, and fixing end weld with dowel, the crotch of connection end is connected in described stiffening ring, and passes through colligation steel
Silk is fixing.
Multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 2, it is characterised in that the lower floor of described framework of steel reinforcement is with right
The concrete cushion of annular it is provided with between answering bottom bearing course at pile end enlarged footing.
9. according to the construction method of the multilamellar base expanding and base expanding manually digging hole filling pile described in any one of claim 1-8, it is characterised in that
Comprise the steps:
1) stake position measuring, hand excavation's stake holes, pouring reinforcement concrete retaining wall；
2) piecemeal double steel bar skeleton and steel reinforcement cage are made；
3) breast wall concrete intensity continues excavation stake holes after reaching to set intensity；
4) repeat step 1), step 3), carry out current bearing course at pile end base expanding and base expanding by design size；
5) pour base expanding and base expanding end ring shape concrete cushion, and lay double steel bar skeleton block and by adjoining for adjacent framework of steel reinforcement block
Edge muscle forms the double steel bar skeleton of annular by steel wire lashing, completes the structure of current bearing course at pile end；
6) repeat step 3), step 4), step 5), complete the structure of all bearing course at pile end；
7) lay steel reinforcement cage, by main for double steel bar skeleton muscle with the main muscle of steel reinforcement cage install dowel metal binding wire by dowel with
On fixing steel reinforcement cage, stiffening ring is fixed；
8) downcomer, casting concrete pile.
The construction method of multilamellar base expanding and base expanding manually digging hole filling pile the most according to claim 9, it is characterised in that described step 3) in
The described intensity that sets is as 70%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698114.7A CN106120721B (en) | 2016-08-19 | 2016-08-19 | Multi-layer bottom-expanding manual hole digging cast-in-place pile and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610698114.7A CN106120721B (en) | 2016-08-19 | 2016-08-19 | Multi-layer bottom-expanding manual hole digging cast-in-place pile and construction method |
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| Publication Number | Publication Date |
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| CN106120721A true CN106120721A (en) | 2016-11-16 |
| CN106120721B CN106120721B (en) | 2018-12-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487270A (en) * | 2018-06-15 | 2018-09-04 | 华东交通大学 | A kind of friction pile and construction method |
| CN112081102A (en) * | 2020-07-29 | 2020-12-15 | 浙江中正岩土技术有限公司 | Large-diameter cast-in-situ bored pile and construction method thereof |
| CN114482022A (en) * | 2021-12-06 | 2022-05-13 | 中铁二院北方勘察设计有限责任公司 | Construction method of prestressed manual hole digging pile |
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| CN108487270A (en) * | 2018-06-15 | 2018-09-04 | 华东交通大学 | A kind of friction pile and construction method |
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| CN114482022A (en) * | 2021-12-06 | 2022-05-13 | 中铁二院北方勘察设计有限责任公司 | Construction method of prestressed manual hole digging pile |
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| Publication number | Publication date |
|---|---|
| CN106120721B (en) | 2018-12-25 |
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Address after: 210031 building 4, Yangzi science and technology innovation headquarters base, No.5, Pudong North Road, Jiangbei new district, Nanjing City, Jiangsu Province Patentee after: China Chemical Civil Engineering Co.,Ltd. Address before: Liuhe Dachang District of Nanjing City, Jiangsu province 210044 Yang Road No. 357 Patentee before: CHEMICAL INDUSTRY GEOTECHNICAL ENGINEERING Co.,Ltd. |