CN108252298B - A kind of reexpansion stake and its construction method - Google Patents
A kind of reexpansion stake and its construction method Download PDFInfo
- Publication number
- CN108252298B CN108252298B CN201810054606.1A CN201810054606A CN108252298B CN 108252298 B CN108252298 B CN 108252298B CN 201810054606 A CN201810054606 A CN 201810054606A CN 108252298 B CN108252298 B CN 108252298B
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- Prior art keywords
- stake
- reexpansion
- pile body
- interior
- back taper
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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
- E02D5/34—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
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
-
- 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
Abstract
The present invention provides a kind of reexpansion stake and its construction method, including pile body, back taper and interior lantern ring, pile body one end is equipped with expansion arc, back taper is connected with the drawstring across pile body, interior lantern ring is fixed on inside pile body, and it is overlapped with expansion arc top, interior collar side wall is equipped with interior hole, the bracing members through interior collar side wall are equipped in interior hole, back taper is driven up by drawstring into expansion arc and extrusion expansion section brings it about and expands for the first time, it continues up extruding bracing members and passes through interior collar side wall, extrusion expansion section brings it about second of expansion to bracing members again.It is bigger with expansion angle that reexpansion stake of the present invention more commonly expands stake, bearing capacity is stronger, it settles small, stability is good, construction is simple, the features such as low cost, is suitble to the strengthening of foundation of the engineerings such as highway, dyke, house, the engineerings such as groynes protection, river protection against erosion, coastal waters hydrological observation, protection of landslide.
Description
Technical field
The present invention relates to a kind of reexpansion stake and its construction methods, belong to reinforcing soft foundation field.
Background technique
For a long time, the problem for the treatment of of soft foundation of highway and dyke is always extensive concern.Past often utilizes stake
Reinforcing soft foundation is carried out, but the stake in soft base only relies on frictional force in side-pile so the sedimentation of stake is big, the effect of this reinforcing soft foundation
And bad and cost is also high, difficulty of construction is also big.At the same time, under the overall background of " ocean power " strategy, coastal waters beach
Hydrological observation be protect Offshore Ecology environment an important means.But since the ground of coastal waters beach is soft, offshore beach is coated
Observation stake equally have sedimentation big, the problems such as wind and wave resistance, tidal competence are poor, and difficulty of construction is big.It can be seen that how inexpensive
Ground, easily, effectively improve bearing capacity and stability of the stake in soft base and have become a urgent problem,
Its meaning is self-evident.
Summary of the invention
Goal of the invention: the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide one kind to lead to
After the reexpansion stake of expansion twice and soft base firm connection, the basis of the engineerings such as highway, dyke, house is suitble to add
Gu engineerings such as groynes protection, river protection against erosion, coastal waters hydrological observation, the protection of landslide.
The present invention also provides the construction methods of above-mentioned reexpansion stake.
In order to solve the above-mentioned technical problem, the invention discloses a kind of reexpansion stakes, including pile body, back taper and interior set
Ring, described pile body one end are equipped with expansion arc, and the back taper is connected with the drawstring across pile body；A lantern ring is fixed on pile body in described
Inside, and be overlapped with expansion arc top, interior collar side wall is equipped with interior hole, is equipped in interior hole and runs through interior collar side wall
Bracing members；The back taper is driven up by drawstring into expansion arc and extrusion expansion section brings it about and expands for the first time, is continued
Upward bracing members open collar side wall in passing through, and extrusion expansion section brings it about second of expansion to bracing members again.
Wherein, one end that the bracing members are located at outside interior collar side wall is equipped with cutting ferrule, prevents bracing members from falling into stake；
The length of bracing members is less than the radius of interior lantern ring, so that squeezing bracing members to the upward space of back taper passes through interior lantern ring
Side wall.
It is fixed inside pile body at the top of lantern ring by counter-force in described, the height of counter-force card is higher than expansion arc.
The expansion arc periphery is cased with a spring band, guarantees that expansion arc is indeformable in the process of sinking, does not expand, but works as
When carrying out expansion construction, due to the expansion of expansion arc, spring band is squeezed will automatic upward sliding.
The pile body is made of the above steel pipe connection of a section, and two adjacent section steel pipes are connected by steel bushing in pile body,
It is connected by the way of being welded using hickey or directly.
The longitudinal section of the back taper is isosceles triangle, and base diameter is greater than the diameter of pile body.
Counter-force lid and reaction frame are additionally provided at the top of the pile body, the counter-force is placed at the top of pile body, the reaction frame peace
End is covered loaded on counter-force, the chain block of connection stay cord is equipped at the top of reaction frame.
Wherein, reaction plate that can be up and down is equipped in the middle part of the reaction frame, the reaction plate lower part is equipped with jack,
Top is equipped with the collet of fixed pulling rope, and collet interior, which is equipped with, passes through vertical channel for drawstring, and side, which is equipped with, can screw in compression drawstring
Bolt.
Further, the optional hand jack of the jack or hydraulic jack are matched when selecting hydraulic jack
The standby power distribution cabinet for driving its load.
The construction method of above-mentioned reexpansion stake, includes the following steps:
S1, ground pore-forming: ground pore-forming is carried out in the way of the punching of shock and vibration, hammering or water；
S2, reexpansion stake production: bracing members are packed into interior lantern ring in hole, interior lantern ring is fixed in pile body
Portion, back taper are placed in below expansion arc, and drawstring is passed through pile body, and expansion arc periphery puts on spring band；
S3, judge whether to connect steel pipe as needed；
S31, direct pile sinking: if not needing to connect steel pipe, pile sinking in pore-forming is sent into reexpansion stake；
S32, adapter tube pile sinking: if desired connecing steel pipe, then by steel bushing joint steel pipe at the top of pile body, required for reaching
Pile body length, then by reexpansion stake be sent into pore-forming in pile sinking；
S4, expansion stake are promoted: after the completion of pile sinking, 0.1~0.5m is promoted in reexpansion stake upwards；
S5, installation are mechanical: installing counter-force lid and reaction frame in reexpansion stake top portion, will pull calabash on reaction frame
Reed connection stay cord；
S6, judge whether that jack is installed as needed；
S61, chain block drawing back taper: if not needing installation jack, pass through chain block drawing back taper；
S62, jack drawing back taper: if desired installing jack, then reaction plate, reaction plate lower part are installed on reaction frame
Jack is installed, top installation collet simultaneously fixes drawstring, and jack driving reaction plate moves upwards, and falls by drawstring drawing
Cone；
S7, concrete perfusion: after pulling out, back taper is pushed into separation reexpansion stake bottom, then in reexpansion stake
Concrete perfusion；
S8, detection are checked and accepted: being carried out an acceptance inspection according to construction requirement.
The present invention is realized using the expansion arc of drawing back taper extrusion expansion stake to be expanded for the first time, continues up drawing back taper,
Its will squeeze in bracing members in lantern ring, so that bracing members is passed through the expansion arc of the side wall of interior lantern ring extrusion expansion stake again
To realize the reexpansion of expansion stake；After expansion construction terminates, back taper is separated with expansion stake bottom using reinforcing bar, then
The concrete perfusion in steel-pipe pile, concrete can form a hard basis in the bottom of stake, in addition the bearing area at stake bottom
Increase, the bearing capacity and stability of expansion stake will be significantly improved under the two interaction.Reexpansion stake more commonly expands
The expansion angle of stake is bigger, can reach 70 °, the more common stake of bearing capacity improves 50% or so.
The utility model has the advantages that
1, the application reexpansion stake uses a lantern ring in expansion arc top is added, and is successively squeezed by drawing back taper swollen
Bracing members in swollen section and interior lantern ring so that expansion twice occurs for the expansion arc of expansion stake, increase expansion angle and
The bearing area at stake bottom, sedimentation is small, stability is good.
2, the construction machinery of the application reexpansion stake cooperates jack drawing back taper using chain block, can precisely control
The speed pulled up is made, the accuracy and success rate of construction are improved.
3, the construction method flexibility and reliability of the application reexpansion stake facilitates implementation, at low cost.
Detailed description of the invention
The present invention is done with reference to the accompanying drawings and detailed description and is further illustrated, of the invention is above-mentioned
And/or otherwise advantage will become apparent.
Fig. 1 is the overall structure figure of the reexpansion stake；
Fig. 2 is the expansion process figure of the reexpansion stake；
Fig. 3 is interior thimble structure schematic diagram of the reexpansion stake；
Fig. 4 is the steel bushing structural schematic diagram of the reexpansion stake；
Fig. 5 is the construction flow chart of the reexpansion stake.
Specific embodiment
According to following embodiments, the present invention may be better understood.
As shown in Figures 1 to 4, the pile body 6 of the reexpansion stake is made of two section steel pipes, passes through steel bushing between two section steel pipes
Cylinder 7 connects, first withDrill bit be equally spaced two circle apertures 71 on steel bushing, the number of every circle aperture is 6
~8, then by two steel pipes insertion steel bushing 7 of spreading, every circle aperture 71 on steel bushing 7 is allowed to be respectively aligned to respective steel
Pipe, is finally welded on respective steel pipe using aperture 71 each on electric weld handle steel bushing 7.
6 lower end of pile body has expansion arc 9, and back taper 10 is equipped with below expansion arc 9, and 10 top connection stay cord 10-1 of back taper is drawn
Rope 10-1 passes through pile body 6 and connect with the chain block 2 at 1 top of reaction frame；9 periphery of expansion arc is cased with a spring band 8, and top is equipped with
Interior lantern ring 11, interior lantern ring 11 are fixed on inside pile body 6 by counter-force card 11-1.There are interior holes for interior 11 side wall of lantern ring
111, interior hole 111 is interior to be equipped with the bracing members 112 through interior 11 side wall of lantern ring, and bracing members 112 are outside interior 11 wall of lantern ring
One end cutting ferrule 113 is installed, interior lantern ring 11 is Chong Die with 9 top of expansion arc；10 longitudinal section of back taper is isosceles triangle, bottom
Portion's diameter is greater than the initial diameter of pile body 6 and expansion arc 9.
Counter-force lid 5 is equipped at the top of pile body 6,5 upper end of counter-force lid is equipped with reaction frame 1, is equipped with connection stay cord at the top of reaction frame 1
The chain block 2 of 10-1；Reaction plate 1-1 that can be up and down is equipped in the middle part of reaction frame 1, the lower part reaction plate 1-1 is equipped with hydraulic
The jack 4 of driving, top are equipped with the collet 13 of fixed pulling rope 10-1, and drawstring 10-1 passes through the spiral shell that collet 13 is arranged by side
Bolt 13-1, which is screwed, fixes drawstring, and jack 4 passes through the control load of power distribution cabinet 3.
As shown in figure 5, the construction method of the reexpansion stake includes the following steps:
S1, ground pore-forming: ground pore-forming is carried out in the way of shock and vibration, hammering or water punching etc.；
S2, reexpansion stake production: bracing members 112 are packed into interior lantern ring 11 in hole 111, cutting ferrule is installed in end
113, interior lantern ring 11 is fixed on inside pile body 6, and back taper 10 is placed in 9 lower section of expansion arc, and drawstring 10-1 is passed through pile body 6, swollen
Swollen section of 9 peripheries, which put on spring band 8, prevents expansion arc 9 from expanding and deforming in the process of sinking；
S32, by steel bushing 7 in 6 top joint steel pipe of pile body, then will be secondary with pile body length required for reaching
It expands stake and is sent into pile sinking in pore-forming；
S4, expansion stake are promoted: after the completion of pile sinking, 0.1~0.5m is promoted into reexpansion stake upwards, it is reserved enough at stake bottom
Filling concrete space；
S5, installation are mechanical: counter-force lid 5 and reaction frame 1 are installed in reexpansion stake top portion, by the hand on reaction frame 1
Draw 2 connection stay cord 10-1 of cucurbit；
S62, jack drawing back taper: installing reaction plate 1-1 on reaction frame 1, and jack 4 is installed in the lower part reaction plate 1-1,
Top installation collet 13 simultaneously fixes drawstring 10-1, and jack 4 drives reaction plate 1-1 to move upwards by power distribution cabinet 3, passes through drawing
Rope 10 extrusion expansion section 9 of 10-1 drawing back taper, brings it about deformation and gos deep among surrounding soil；When extrusion expansion section 9, spring
Hoop 8 can move upwards accordingly；It continues up and squeezes bracing members 112, the side wall that bracing members 112 pass through interior lantern ring 11 continues to squeeze
The top of compression swelling section 9, expansion arc 9 occur reexpansion and further go deep among surrounding soil；
S7, concrete perfusion: after drawing, back taper 10 is pushed into separation reexpansion stake bottom using reinforcing bar, then past
Concrete perfusion in reexpansion stake；
S8, detection are checked and accepted: being carried out an acceptance inspection according to construction requirement.
The present invention has successfully squeezed into 44 in Jiangsu Province coastal waters, for the hydrological observation of seashore protection against erosion and coastal waters,
By the time test more than 4 years, effect is still fine for the expansion stake at scene.
The present invention provides a kind of reexpansion stake and its thinkings and method of construction method, implement the technical solution
Method and approach it is very much, the above is only a preferred embodiment of the present invention, it is noted that for the general of the art
For logical technical staff, various improvements and modifications may be made without departing from the principle of the present invention, these improve and
Retouching also should be regarded as protection scope of the present invention.The available prior art of each component part being not known in the present embodiment is subject to reality
It is existing.
Claims (10)
1. a kind of reexpansion stake, which is characterized in that including pile body (6), back taper (10) and interior lantern ring (11), the pile body
(6) one end is equipped with expansion arc (9), and the back taper (10) is connected with the drawstring (10-1) across pile body (6)；Lantern ring in described
(11) it is internal to be fixed on pile body (6), and is overlapped with expansion arc (9) top, interior lantern ring (11) side wall is equipped with interior hole (111),
The bracing members (112) through interior lantern ring (11) side wall are equipped in interior hole (111)；The back taper (10) passes through drawstring (10-1)
It is driven up into expansion arc (9) and extrusion expansion section (9) brings it about and expands for the first time, continue up extruding bracing members
(112) lantern ring (11) side wall in passing through, extrusion expansion section (9) brings it about second of expansion to bracing members (112) again.
2. a kind of reexpansion stake according to claim 1, which is characterized in that the bracing members (112) are located at interior set
One end outside ring (11) side wall is equipped with cutting ferrule (113), and the length of bracing members (112) is less than interior lantern ring (11) radius.
3. a kind of reexpansion stake according to claim 2, which is characterized in that by anti-at the top of lantern ring (11) in described
It is internal that power card (11-1) is fixed on pile body (6).
4. a kind of reexpansion stake according to claim 3, which is characterized in that expansion arc (9) periphery is cased with a bullet
Spring buckle (8).
5. a kind of reexpansion stake according to claim 4, which is characterized in that the pile body (6) is by the above steel pipe of a section
Connection composition, two adjacent section steel pipes are connected by steel bushing (7).
6. a kind of reexpansion stake according to claim 5, which is characterized in that the longitudinal section of the back taper (10) is isosceles
Triangle, base diameter are greater than the diameter of pile body (6).
7. a kind of reexpansion stake according to claim 6, which is characterized in that be equipped at the top of pile body (6) counter-force lid (5) and
Reaction frame (1), the counter-force lid (5) are placed at the top of pile body (6), and the reaction frame (1) is installed on counter-force lid (5) upper end, counter-force
The chain block (2) of connection stay cord (10-1) is equipped at the top of frame (1).
8. a kind of reexpansion stake according to claim 7, which is characterized in that being equipped in the middle part of the reaction frame (1) can
Up and down reaction plate (1-1), the reaction plate lower part (1-1) are equipped with jack (4), and top is equipped with fixed pulling rope (10-1)
Collet (13).
9. a kind of reexpansion stake according to claim 8, which is characterized in that the jack (4) is hydraulically operated simultaneously
The power distribution cabinet (3) of its load of connection driving.
10. the construction method of reexpansion stake described in claim 1, which comprises the steps of:
S1, ground pore-forming；
S2, reexpansion stake production: bracing members (112) being packed into interior lantern ring (11) interior hole (111), interior will open lantern ring
(11) it is internal to be fixed on pile body (6), back taper (10) is placed in below expansion arc (9), and drawstring (10-1) is passed through pile body (6), swollen
Swollen section of (9) periphery puts on spring band (8)；
S3, judge whether to connect steel pipe as needed；
S31, direct pile sinking: if not needing to connect steel pipe, pile sinking in pore-forming is sent into reexpansion stake；
S32, adapter tube pile sinking: if desired connecing steel pipe, then by steel bushing (7) in pile body (6) top joint steel pipe, needed for reaching
Then reexpansion stake is sent into pile sinking in pore-forming by the pile body length wanted；
S4, expansion stake are promoted: after the completion of pile sinking, reexpansion stake being promoted upwards；
S5, installation are mechanical: setting in reexpansion stake top portion installation counter-force lid (5) and reaction frame (1), the counter-force lid (5)
At the top of pile body (6), the reaction frame (1) is installed on counter-force lid (5) upper end, even by the chain block (2) at the top of reaction frame (1)
Meet drawstring (10-1)；
S6, judge whether that jack is installed as needed；
S61, chain block drawing back taper: if not needing installation jack, pass through chain block (2) drawing back taper (10)；
S62, jack drawing back taper: if desired installing jack, then installs reaction plate (1-1) on reaction frame (1), reaction plate
Jack (4) are installed in the lower part (1-1), and collet (13) and drawstring (10-1) is fixed, jack (4) driving reaction plate is installed on top
(1-1) is moved upwards, and passes through drawstring (10-1) drawing back taper (10)；
S7, concrete perfusion: after drawing back taper, back taper (10) are pushed into separation reexpansion stake bottom, then toward secondary swollen
Concrete perfusion in swollen stake；
S8, detection are checked and accepted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810054606.1A CN108252298B (en) | 2018-01-19 | 2018-01-19 | A kind of reexpansion stake and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810054606.1A CN108252298B (en) | 2018-01-19 | 2018-01-19 | A kind of reexpansion stake and its construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252298A CN108252298A (en) | 2018-07-06 |
| CN108252298B true CN108252298B (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810054606.1A Active CN108252298B (en) | 2018-01-19 | 2018-01-19 | A kind of reexpansion stake and its construction method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752211A (en) * | 2019-01-30 | 2019-05-14 | 中国二十冶集团有限公司 | A kind of lime-soil compaction pile sampler and method |
| CN111042125B (en) * | 2019-12-12 | 2021-07-13 | 三峡大学 | Double-layer pile casing device for limiting expansion of head of cast-in-place pile and construction method |
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| CN103938623A (en) * | 2013-01-17 | 2014-07-23 | 上海市浦东新区知识产权保护协会 | Tubular pile construction method |
| CN105544507A (en) * | 2015-11-24 | 2016-05-04 | 江苏省电力公司连云港供电公司 | Steel pipe pile device with overhanging arms |
| CN106049463A (en) * | 2016-05-27 | 2016-10-26 | 刘录怀 | Soil-squeezing hole expanding pile and construction method and drilling tool thereof |
| CN106759302A (en) * | 2017-01-17 | 2017-05-31 | 上海智富建设工程有限公司 | One kind expansion uplift pile and its construction machinery and construction technology |
| CN107268583A (en) * | 2016-04-09 | 2017-10-20 | 河南城建学院 | Ball-upper plate-anchor rod foundation and its construction method |
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- 2018-01-19 CN CN201810054606.1A patent/CN108252298B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938623A (en) * | 2013-01-17 | 2014-07-23 | 上海市浦东新区知识产权保护协会 | Tubular pile construction method |
| CN105544507A (en) * | 2015-11-24 | 2016-05-04 | 江苏省电力公司连云港供电公司 | Steel pipe pile device with overhanging arms |
| CN107268583A (en) * | 2016-04-09 | 2017-10-20 | 河南城建学院 | Ball-upper plate-anchor rod foundation and its construction method |
| CN106049463A (en) * | 2016-05-27 | 2016-10-26 | 刘录怀 | Soil-squeezing hole expanding pile and construction method and drilling tool thereof |
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| CN108252298A (en) | 2018-07-06 |
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