CN2057677U - Dry steel pipe sample device of perfusion pile - Google Patents
Dry steel pipe sample device of perfusion pile Download PDFInfo
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- CN2057677U CN2057677U CN 89219955 CN89219955U CN2057677U CN 2057677 U CN2057677 U CN 2057677U CN 89219955 CN89219955 CN 89219955 CN 89219955 U CN89219955 U CN 89219955U CN 2057677 U CN2057677 U CN 2057677U
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- pipe
- steel pipe
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- pile
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Abstract
The utility model discloses a dry steel pipe earth taking device for filling piles, comprising two steel pipes, namely a first earth taking pipe (1) and a second earth taking pipe (2), wherein, the former is about half as long as a pile, is outside accompanied by vent tubes (2) and is used for taking out an upper segment earth column about half as long as the pile; the latter is composed of an upper segment tube (11), a lower segment tube (10) and an outer tube sheathed outside the upper and the lower segment tubes (11), (10), and is used for taking out the other remained half earth column. The upper and the lower segment tubes (11), (10) become a cylinder and a plunger structures. After the two earth taking steel pipes are pulled up off the ground, the soil columns in the steel pipes are exhausted by the plunger. The utility model fills the technical blank of dry earth taking in pile filling construction on sludge and sludgy earth layers.
Description
The utility model relates to the equipment of the dry type soil basketing method of implementing castinplace pile.
Existing pouring pile hole method, what more generally adopt is steel pipe soil compaction method.This method is earlier steel pipe to be pressed into (squeezing into) underground (the pipe end is with flap valve or give system concrete pile point back cover), toward steel pipe inner chamber concrete perfusion, progressively mentions steel pipe more then, at last steel pipe is extracted ground, and whole pile body just forms in this process.This piling method will produce serious soil body extruding and protuberance when pore-forming, thereby will cause contiguous pile body dislocation, fracture, and contiguous building and the structure of harm.This has become the shortcoming that this pile-formation process is difficult to overcome, thereby has had a strong impact on workmanship, and has limited the range of application of castinplace pile.
In order to address the above problem, the most effective way is that to change " soil compaction " be " fetching earth ".Wet type soil taking hole forming methods such as hole, Churn drill pore-forming all exist the construction complexity, the time of fetching earth is long and shortcomings such as slurry coat method meeting severe contamination job site and surrounding environment but the diving of existing mud off is drilled to, moreover, because loosened soil is difficult to remove totally at the bottom of the hole, all soil of stake is seriously damaged, slurry coat method pollutes the pile body arrangement of reinforcement, also can reduce the supporting capacity of stake.These shortcomings all are that the wet type soil extracting process is difficult to overcome.And all be not suitable for mud or mucky soil (seeing " industry and civilian construction bored concrete pile foundation design and construction rules " (JGJ4-80) the 3rd, 2,13 and the 3rd, 2,15) at dry type soil extracting process such as existing auger bore, mechanically drived luoyang shovel pore-formings.Therefore, need to seek a kind of dry type soil basketing method and corresponding apparatus that is applicable to mud and silt soil strata.
The purpose of this utility model is exactly to provide a cover to be applicable to the dry type drawing out soil equipment that carries out filling pile construction in mud and the silt soil strata.
Scheme of the present utility model following (describing in conjunction with the accompanying drawings):
The utility model adopts the steel pipe that the bottom is opened wide to squeeze into soil layer, will enter earth pillar in the pipe then and together mention liftoffly together with steel pipe, with plunger the earth pillar in the steel pipe is discharged again.The steel pipe that fetches earth is divided into two covers, and first cover claims first pipe that fetches earth, and its takes out earlier and accounts for the pile body length epimere earth pillar of half approximately, and second cover claims second pipe that fetches earth, and its effect is a taking-up hypomere earth pillar.Through this second time soil taking, just in one of underground formation and the corresponding stake of pile body length hole.With that can by with the common corresponding method castinplace pile of steel pipe extrusion soil filling pile body concrete.
Description of drawings:
Fig. 1 is first structure chart (vertically analysing and observe) that fetches earth pipe,
Fig. 2 is second structure chart (vertically analysing and observe) that fetches earth pipe,
Fig. 3 is the first Non-return air valve structure chart that fetches earth pipe, and Fig. 4 is the A-A sectional view of Fig. 3, and Fig. 5 is the B-B sectional view of the B of Fig. 3, and Fig. 6 is the C-C sectional view of Fig. 3,
Fig. 7 is constructing operation figure of the present utility model.
Fig. 1 and Fig. 3 have shown first structure that fetches earth pipe in detail.Its main body is that an external diameter equates with pile body diameter or approaching steel pipe (1), and its length surpasses long half of stake, it is once taken out account for the pile body earth pillar of half approximately.With a ventilating pipe (2), its effect is to pull up first when fetching earth pipe, the steel pipe bottom space can be communicated with surface air along longitudinally in the tube wall of steel pipe (1) outside, and earth pillar comes off in collapse hole and the pipe because of pull of vacuum causes to avoid.The lower end of ventilating pipe (2) is provided with a Non-return air valve (3), and the formation of Non-return air valve (3) includes guide vane (5) and (6) in spindle (4) and insertion ventilating pipe (2) chamber.In spindle (4) upper surface one pit is arranged, the internal diameter of pit is a bit larger tham the external diameter of ventilating pipe (2), be welded with two guide vanes (5), (6) of stretching vertically upward on its baseplane, they are the welding mutually of perpendicular quadrature ground, and guide vane (6) is longer than guide vane (5), and their width and internal diameters of ventilating pipe (2) separately are approaching substantially.Non-return air valve (3) is unlikely when carrying pipe to come off out in ventilating pipe (2) in order to make, upper plane center at guide vane (6) has an elongated slot (7), there is a bolt (8) to run through the tube wall of ventilating pipe (2) along diametric(al), and pass elongated slot (7), spindle (4) is together linked together with ventilating pipe (2) together with guide vane (5), (6).Steel pipe (1) is being pressed into when underground, spindle (4) arranges soil, and simultaneously, the pit bottom surface of the lower surface of ventilating pipe (2) and spindle (4) offsets, and therefore, ventilating pipe (2) not reason earth enters in the pipe and stops up.When steel pipe (1) is upwards pulled up, under the effect of self gravitation and soil resistance, spindle (4) falls to hanging from above on bolt (8), thereby the bottom of steel pipe (1) is communicated with surface air by ventilating pipe (2), has so just played the effect that vacuum is formed on above-mentioned destruction steel pipe bottom when carrying pipe.
D among Fig. 2 and Fig. 7 has shown second concrete structure that fetches earth pipe.Second fetch earth pipe include lower tube (10) and last section the pipe (11).Lower tube (10) and last section pipe (11) link together, and they constitute the annexation of plunger and cylinder barrel, and going up a section pipe (11) can move up and down and rotate in lower tube (10), plays the plunger effect.Even compartment of terrain is welded with some (being advisable with three) arc pieces (12) on the internal perisporium of lower tube (10) upper end, goes up the arc piece (13) that also is welded with the same block number on the lower end periphery wall that cuts pipe (11) accordingly.Each breach of the interval annulus that arc piece (12) on the lower tube (10) is surrounded can hold the arc piece (13) that cuts pipe (11) to be passed through.Arc piece (13) and last section the pipe (11) bottom cover (14) between axial distance be a bit larger tham arc piece (12) height vertically.The external diameter of bottom cover (14) is slightly smaller than the internal diameter of lower tube (10), but the internal diameter of the interval annulus that is surrounded greater than arc piece (12), its effect, the one, form a plunger with last section pipe (11), the earth pillar pushing tow that enters when will fetch earth in the lower tube (10) comes out, the 2nd, a section pipe (11) can be interlocked with lower tube (10) when upwards being mentioned, (10) break away from and do not cause lower tube, have the effect of guiding and supporting.
It is roughly isometric with lower tube (10) to go up section pipe (11).When the upper bottom surface of the bottom surface of the last section arc piece (13) of pipe on (11) and the arc piece (12) on the lower tube (10) offsets, last pipe can be executed downward pressure to following pipe, the length overall that this moment, upper and lower section pipe coupled together reaches maximum, and is promptly isometric substantially with the coaxial pore-forming steel pipe (9) that is linked in their outsides.
The outside, lower end of lower tube (10) studs with a circle steel loop (15), it is reduced in the suitable scope gap between the inwall of the lower end of lower tube (10) and pore-forming steel pipe (9), lower tube (10) is moved up and down in pore-forming steel pipe (9), can stop earth when immersed tube, in this gap, to be clamp-oned again.
Fig. 7 is user mode and the construction sequence of the utility model drawing out soil equipment when piling construction that shows.Describe below concrete the work:
Among the figure a step be first fetch earth pipe be pressed into (squeezing into) underground.The b step is together to mention liftoffly with being pressed into underground first pipe that fetches earth together with entering earth pillar in it, and this moment is pore-forming (16) at the beginning of one of underground formation, has finished fetching earth of last intercepting dike post.The c step is plunger (17) from up to down to be pressed into be raised liftoff first and fetch earth in the pipe, and the earth pillar in it is discharged.The d step be second fetch earth pipe (comprise lower tube (10) and last section the pipe (11)) with the coaxial cover integrator of pore-forming steel pipe (9), hang in the bottom of pore-forming (16) just, down the application of force is pressed into the degree of depth that equals the pile body length overall substantially again, has finished fetching earth of time intercepting dike post this moment.The e step for second fetch earth pipe lower tube (10) and go up to cut pipe (11) together to mention from pore-forming steel pipe (9) extraction liftoff.In step f on cut pipe (11) and impose downward power, the earth pillar that will enter in the lower tube (10) is discharged.Through above-mentioned six road steps, just removed with the earth pillar that the pile body length overall equates substantially, first pipe that fetches earth is finished fetching earth of intercepting dike post, and second Guan Ze that fetches earth finishes down fetching earth of intercepting dike post.The frictional resistance that fetches earth between inside pipe wall and the earth pillar is added less than the outer cross section of pore-forming steel pipe in the interior cross section of pipe owing to fetch earth, and the soil body of taking-up is long-pending littler than pile body cumulative volume.Fetch earth finish after, pore-forming steel pipe (9) is still stayed underground, subsequent can by with the corresponding method of common steel pipe extrusion soil filling pile perfusion pile concrete.
Major advantage of the present utility model is:
(1), filled up the blank of implementing dry extracting soil when in mud and silt soil strata, carrying out filling pile construction, thereby it is existing to have solved the steel pipe extrusion soil filling pile, expand, swell because the soil body is subjected to serious extruding, cause pile body dislocation, fracture, and endanger the problem that close to buildings, structures etc. are difficult to overcome. The construction complexity that the utility model has also been avoided wet type to fetch earth certainly existing, the time of fetching earth be long, pollute job site and surrounding environment, and because stake end loosened soil is difficult to remove totally, all soil structures of stake are destroyed and mud contamination pile body arrangement of reinforcement, thereby reduce the series of problems such as bearing capacity of stake.
In the situation that bored concrete pile has been used widely, the solution of the problems referred to above has very big realistic meaning.
(2) according to embodiment, the utility model second time soil taking total amount be full pile body long-pending about 70%, also have about 30% the regolith to around squeeze and open.Because when the soil body is squeezed, at first by compacted, then just to around squeeze and to push away and swell, therefore, a spot of regolith extruding not only is unlikely problems such as causing pile body dislocation, fracture and harm adjacent structure, structure, also will make between the Zhou Tuyu pile lining because of an amount of compacted frictional force that increases of the soil body.
(3), the utility model is with low cost, easy to use, as long as adopt normally used common pile driver just can be competent at, so compliance is strong.
(4), owing to the steel pipe extrusion soil filling pile because the serious extruding of the soil body exists pile body dislocation, breakage problem, therefore regulation is to all pile bodies, all must " run stake " by root with pile frame, with the supporting capacity and the densification crack of check stake.And therefore the utility model can be removed from and run the stake operation owing to solved the problems referred to above, runs stake expense, reduction of erection time thereby save, and increases economic efficiency.
In addition, the soil of taking-up also can be used as the good mud source that makes loam brick.
(5), owing to solved the problem of fetching earth, the utility model also can be used for large diameter pile.At this moment, can calculate the arrangement of reinforcement of reinforcing cage by vertical load and horizontal loading, replacing the giving system stake, and the cost and the reduction of erection time of reducing pile foundation greatly, also can avoid generally giving in the system pile driving construction problem that endangers adjacent structure and structure because of soil compaction that is difficult to avoid.This has just expanded the range of application of steel pipe pore-creating filling pile.
(6), the utility model also can with give system stake and cooperate: before giving the system sunk pile, take out and go up the intercepting dike post with first pipe that fetches earth earlier, and then the system of will giving an in place and pile sinking, reduce the purpose that the soil body pushes to reach.
Claims (5)
1, a kind of dry type steel pipe drawing out soil equipment of castinplace pile, it includes steel pipe, steel pipe is driven underground it from the underground stake machine of extracting again, and it is characterized in that:
A, take out for finishing that first of the last intercepting dike post account for whole half volume of pile body fetches earth pipe to be an external diameter approachingly equate with the pile body diameter, length is about half steel pipe (1) of pile body length overall, its tube wall outside has the ventilating pipe (2) that steel pipe end opening and steel pipe surface air suitable for reading is linked up mutually along longitudinally, the lower end of ventilating pipe (2) is provided with a Non-return air valve (3), and the two is solidly fixed ventilating pipe (2) and steel pipe (1);
B, take second of the following intercepting dike post that accounts for whole half volume of the pile body pipe that fetches earth away and include lower tube (10), go up and cut pipe (11) for finishing, the two constitutes the structure of plunger and sleeve, their length equates substantially, be about long half of stake, put a length overall behind the two coaxial fit into and approximate in the outer tube (9) of long, the external diameter of stake near the stake footpath, the external diameter of lower tube (10) is slightly less than the internal diameter of outer tube (9).
2, dry type steel pipe drawing out soil equipment as claimed in claim 1, it is characterized in that: it includes spindle (4) described Non-return air valve (3), the pit circular flat of one internal diameter greater than ventilating pipe (2) external diameter arranged on the upper surface of spindle (4), cross guide vane (5), (6) of stretching are vertically upward arranged in pit baseplane central authorities, near footpath within the described ventilating pipe (2), described guide vane (5) (6) inserts chamber within ventilating pipe (2) lower end to their width from bottom to up substantially.
3, dry type steel pipe drawing out soil equipment as claimed in claim 2, it is characterized in that: described guide vane (5) and (6) are that height is uneven, the two is perpendicular quadrature and is welded to each other and is integral, high guide vane (6) central part has an elongated slot (7) that connects along longitudinally, have a bolt (8) to pass the wall of ventilating pipe (2) and elongated slot (7), described spindle (4) is connect together with guide vane (5) (6) and ventilating pipe (2), the footpath is slightly less than the groove width of elongated slot (7) outside the bolt (8).
4, dry type steel pipe drawing out soil equipment as claimed in claim 1, it is characterized in that: described second fetches earth on the top interior sidewall surface of lower tube (10) of pipe equably, and fixed interval has some arc pieces (12), on the lower end lateral surface that cuts pipe (11) on the Guan Shu, also correspondingly be fixed with the arc piece (13) of same block number, the internal diameter of the interval annulus that the external diameter that go up to cut pipe (11) bottom surface capping (14) is constituted greater than arc piece (12), arc piece (13) and bottom surface capping (14) distance vertically are at interval greater than arc piece (12) height vertically.
5, dry type steel pipe drawing out soil equipment as claimed in claim 4, it is characterized in that: the arc piece (12) on the inwall of lower tube (10) top is three, arranges by 360 ° trisections, they constitute the interval annulus that three breach are arranged, each breach can hold the arc piece (13) that is fixed on section pipe (11) lower end lateral surface to be passed through, arc piece (13) also is three, also arranges by 360 ° trisection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219955 CN2057677U (en) | 1989-11-17 | 1989-11-17 | Dry steel pipe sample device of perfusion pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219955 CN2057677U (en) | 1989-11-17 | 1989-11-17 | Dry steel pipe sample device of perfusion pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2057677U true CN2057677U (en) | 1990-05-30 |
Family
ID=4874724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89219955 Withdrawn CN2057677U (en) | 1989-11-17 | 1989-11-17 | Dry steel pipe sample device of perfusion pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2057677U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434597C (en) * | 2006-08-25 | 2008-11-19 | 中机工程勘察设计研究院 | Construction method of immersed tube club-footed bored concrete pile |
| CN102251519A (en) * | 2011-05-05 | 2011-11-23 | 陈清贵 | Tamped and expanded bore pile back pressure device for pipe-sinking cast-in-place pile machine |
| CN104110034A (en) * | 2014-08-04 | 2014-10-22 | 上海强劲地基工程股份有限公司 | Static pressure pile construction method capable of reducing dumping and pile sinking resistance |
-
1989
- 1989-11-17 CN CN 89219955 patent/CN2057677U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434597C (en) * | 2006-08-25 | 2008-11-19 | 中机工程勘察设计研究院 | Construction method of immersed tube club-footed bored concrete pile |
| CN102251519A (en) * | 2011-05-05 | 2011-11-23 | 陈清贵 | Tamped and expanded bore pile back pressure device for pipe-sinking cast-in-place pile machine |
| CN104110034A (en) * | 2014-08-04 | 2014-10-22 | 上海强劲地基工程股份有限公司 | Static pressure pile construction method capable of reducing dumping and pile sinking resistance |
| CN104110034B (en) * | 2014-08-04 | 2016-03-23 | 上海强劲地基工程股份有限公司 | The construction of Static Pressure Pile method of casting and penetrating resistance can be reduced |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |