CN100387788C - Apparatus and method for constructing strength-variable pile in situ by static pressure and drawing - Google Patents
Apparatus and method for constructing strength-variable pile in situ by static pressure and drawing Download PDFInfo
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- CN100387788C CN100387788C CNB2005100532343A CN200510053234A CN100387788C CN 100387788 C CN100387788 C CN 100387788C CN B2005100532343 A CNB2005100532343 A CN B2005100532343A CN 200510053234 A CN200510053234 A CN 200510053234A CN 100387788 C CN100387788 C CN 100387788C
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Abstract
The present invention relates to a molding apparatus and a molding method for dead-drawn shape-variable pile in situ by static pressure and drawing, which belongs to the field of pipe pile manufacture. The present invention is composed of an outer pipe, a concrete vibrator assembly, a steel bar cage, an inner core, an open pile tip and a dead-drawn device, wherein the open pile tip is positioned at the lower end of the outer pipe, the inner core is positioned in the outer pipe, a steel bar cage is positioned between the outer pipe and the inner core, the concrete vibrator assembly is positioned between the steel bar cage and the inner core or between the outer pipe and the steel bar cage, the concrete vibrator assembly can move up and down under the function of external force, and the dead-drawn device draws steel bars in the steel bar cage to stretch. The present invention has the advantages that the design of the open pile tip develops the soil taking in a static pressure pipe; the design of the concrete vibrator assembly effectively raises the bearing compression resisting strength of the present invention, causing the outer wall of the concrete pipe pile to form a convex-concave type resisting pile structure, and the bearing capacity of the pipe pile is improved greatly; the arrangement of a built-in air bag makes the present invention not only to have high bearing pressure, small micro deformation, good molding effect and convenient mould release, but also not to damage the built-in air bag, and the present invention can be used repeatedly.
Description
Technical field:
The present invention relates to a kind of static pressure and pull out cast-in-place shaped device and the forming method of haling the modification pile tube, belong to pile tube and make the field.
Background technology:
Notice of authorization CN1158434C, title " the compound job practices of weak sub-grade treatment pouring pipe pile with large diameter ", this job practices: 1. outer tube is become mould pouring pipe pile with large diameter machine to be arranged in the ground place that will drive piles; 2. the Vibration on Start-up head vibrates downwards, and it is downward to drive the internal and external casing cavity structure that is attached thereto; 3. the internal and external casing cavity structure is squeezed in the ground under the protection of flap valve pilework closure; 4. when the internal and external casing cavity structure sinks to predetermined projected depth, in the cavity of internal and external casing cavity structure, evenly inject concrete by the concrete current divider; 5. the internal and external casing cavity structure is upwards extracted in the vibration head vibration, and flap valve pile shoe structure top separates automatically simultaneously; 6. extract ground fully until the internal and external casing cavity structure, in ring domain, form concrete tubular pile between the soil body of the soil body and outside; 7. treat in the pile tube after the concrete setting, lay sand stone layer on the stake top, and in sand stone layer, put into geo-grid, form the composite foundation mattress layer.Its weak point: the one, be static pressure method or hammering method moulding because the hole of pouring pipe pile still adopts, therefore can change the deformation characteristic and the supporting capacity of stake week soil, the deformation characteristic that all soil of stake is produced, to directly have influence on the foundation quality of its surrounding building, therefore be unsuitable for the intensive place construction of City Building; The 2nd, evenly inject concrete in the internal and external casing cavity, what form is the pile tube of not being with reinforcing cage, not only its bearing capacity is very little, and even more serious be: because concrete is when injecting the internal and external casing cavity, the bubble that remains in its concrete, gap can't be discharged automatically, therefore there is a large amount of holes in very low, the pile body of the density of the pile tube pile body of formed thereby, reaches not designing requirement; The 3rd, internal and external casing adopts the rigidity structure, though help the good moulding of pile tube, but because concrete is after solidifying, what form between its tube wall and concrete formation stake is the suction of inhaling mutually mutually, after the concrete pipe forming pile reaches freezing point, when pulling out internal and external casing by force, not only to overcome suction, frictional force between internal and external casing tube wall and concrete tubular pile, and the power that is consumed is very big, the more important thing is careless slightly, not completely crued concrete tubular pile pulls off as yet inevitably, causes pile tube to scrap.
Summary of the invention:
Purpose of design: avoid the weak point in the background technology, designing a kind of one is to adopt the static pressure moulding hole of post that fetches earth, to avoid the influence to native structure foundation of stake week of static pressure method or hammering method; The 2nd, employing outer tube, core arrangement constitute the molding cavity of hollow shell pill, so that quiet outer tube, the moulding pile tube of pulling out; The 3rd, open by built-in reinforcing cage in the molding cavity of pile tube and to the main rigidity of soft tissues stretching in the reinforcing cage, its bearing capacity is improved significantly, satisfy its designing requirement; The 4th, being provided with between reinforcing cage and inner core between outer tube and inner core or in the outer tube can transportable concrete vibrator assembly, with compact density and the bearing strength of guaranteeing the moulding pile tube; The 5th, adopt internal airbag, to guarantee the pile tube hollow forming and to make things convenient for demoulding; The 6th, inner core adopts foaming or foamed material, and the pile tube after it is shaped need not the backfill cubic meter of stone, work efficiency height.
Design scheme: 1, the stake point being designed to opening stake point is one of feature of the present invention, the function of opening stake point is: the one, with outer tube coupling static pressed pile hole the time, regolith grab bucket in its outer tube is taken out (during tenesmus, pawl in the grab bucket opens automatically, directly inserting in the ground under the effect of gravity and acceleration of gravity, soil is caught along outer tube wall; During rise, the pawl of its grab bucket closes up automatically, soil is accumulated in the grab bucket, proposition is outwelled), therefore can avoid the defective of all geological deformations of stake that the static pressed pile hole produced effectively, guaranteed the foundation quality of stake surrounding building, technical barrier-----static pressure method, vibratory drilling method, the hammering method that have solved the background technology existence can't be at the technical barriers of the intensive local safe construction of City Building; The 2nd, opening stake point be pressed into underground in, because the stake point is inner opening, soil in the opening is after being taken out by grab bucket, the pressure that soil bore in its mouthful is far smaller than the outer pressure that soil bore of stake point, therefore when opening stake point is depressed when, the soil in its opening turns on interior toward the sharp opening of stake under the effect of stake point downforce automatically, thereby make the soil property in the opening become loose relatively, convenient grab bucket is fetched earth.2, between outer tube and inner core or in the outer tube between reinforcing cage and inner core the design of concrete vibrator assembly be two of feature of the present invention, the major function of concrete vibrator is: the one, concrete vibrator can be in the gap in the concrete that is cast between outer tube and reinforcing cage, inner core, bubble is discharged, make concrete density closely knitly surpass design standard, improve its carrying compressive strength (with existing bridge, bridge pier, dam is cast-in-place or prefabricated in the principle and the purpose of the concrete vibrator vibration used identical); The 2nd, match with the quiet speed of pulling out of outer tube, can make cast-in-place stake outer wall form bump type and block pilework, improved the supporting capacity of pile tube to greatest extent.3, haling reinforcing cage master muscle structure Design in underground hole of post is three of feature of the present invention, at first in the underground hole of post that presses in advance, insert certain thickness concrete, with after will to hale the reinforcing bar of fixing steel plate and reinforcing cage bottom respectively affixed one by one, having the reinforcing cage of haling location-plate then inserts in the underground hole of post, inner core is inserted in the reinforcing cage, at last with concrete casting (adopt concrete vibrator assembly) vibration shaping or after directly pouring is shaped, hales reinforcing cage master muscle and be stretched to the power that sets within it, concrete setting moulding.4, the inner core of moulding pile tube being designed to inner core (tubular, hollow structure or real cored structure) is four of feature of the present invention, and the tubular, hollow structure both can be a pipe, also can be rectangular tube, three cornues or the like; On the formation of material, can be foaming tubular, hollow structure or wooden tubular, hollow structure or tubular resin hollow-core construction or tubular metal structure; In the use, both can be disposable, also can be to reuse; For reusable internal airbag inner core, its major function is: the one, and pressure-bearing height, internal airbag shell adopt the little pressure-resistant material of little distortion to make little, the good forming effect of not only pressure-bearing height, and little distortion; The 2nd, be convenient to demoulding, behind the concrete pipe forming pile, as long as discharge most of gas in the internal airbag, the wall of internal airbag and the disengaging automatically of concrete tubular pile wall part under the effect of external force, can conveniently take out internal airbag and can not be damaged.It is five of feature of the present invention that 5 inner cores adopt real cored structure of foaming or the real cored structure of foam, the maximum characteristics of the real in-core core of real in-core core and foam of foaming are: not only low cost of manufacture, light, the good forming effect of body, and after concrete tubular pile is shaped, need not the backfill cubic meter of stone and can effectively stop rainwater to flow into, guaranteed the quality of shaping pile tube.
Technical scheme 1: static pressure pulls out the pull-up forming pile device of cast-in-place grow by outer tube (1), concrete vibrator assembly (2), reinforcing cage (3), inner core (4), opening stake point (7) and hale device and constitute, opening stake point (7) is positioned at the lower end of outer tube (1), inner core (4) is positioned at outer tube (1), reinforcing cage (3) is positioned between outer tube (1) and core (4), concrete vibrator assembly (2) is positioned between reinforcing cage (3) and inner core (4) or between outer tube (1) and reinforcing cage (3) and under the effect of external force, move down, hale device the reinforcing bar in the reinforcing cage (3) is haled elongation.
Technical scheme 2: static pressure pulls out the pull-up forming pile method of cast-in-place grow, the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. inner core is inserted in the reinforcing cage; 6. the concrete vibrator assembly is inserted between inner core and reinforcing cage, progressively concrete is injected in the space that is made of internal airbag and outer tube then, when concrete injects one section height, starting concrete vibrator assembly vibrates the time of setting, bubble in the concrete is discharged, after density reaches standard, quiet pulling out on the outer tube moved under the effect of external force, continue starting concrete vibrator assembly, hole wall is closely knit combines with stake to make concrete, once more concrete is injected in the space that is made of internal airbag and outer tube, when concrete injects one section height, start the concrete vibrator assembly once more and vibrate the time of setting, the bubble in the concrete is discharged, after density reaches standard, quiet pulling out on the outer tube moved under the effect of external force once more, continue starting coagulation upper vibration generator assembly, make on the coagulation to combine, so circulation with the stake hole wall is closely knit, until the pile tube moulding, adopt then hale device with rigidity of soft tissues on the reinforcing cage draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.When inner core is air bag, with the air bag gassy, treat that concrete tentatively solidifies after, internal airbag is discharged, extracted out to the gas in the internal airbag get final product, after interior inspection is qualified, seal.
Technical scheme 3: static pressure pulls out the pull-up forming pile method of cast-in-place grow, the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. inner core is inserted in the reinforcing cage; 6. concrete is injected in the space that is made of inner core and outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force, once more concrete injected in the space that is made of internal airbag and outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
Technical scheme 4: static pressure pulls out the pull-up forming pile method of cast-in-place grow, the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. concrete is injected the inner chamber of outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force, once more concrete injected the inner chamber that outer tube constitutes, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
The present invention compares with background technology, and the one, the design of opening stake point has been started in the static tube and has been fetched earth, not only avoided the defective of all geological deformations of stake that the static pressed pile hole produced, guaranteed the foundation quality of stake surrounding building, and made the soil property in the pipe become loose relatively, be convenient to fetch earth; The 2nd, the design of concrete vibrator assembly, gap, bubble in the concrete tubular pile discharged effectively, density reaches and surpass designing requirement, and improve effectively its carrying compressive strength, make the outer wall of concrete tubular pile form bump type especially and block pilework, improved the supporting capacity of pile tube to greatest extent; The 3rd, the internal airbag shell adopts the little pressure-resistant material of little distortion to make, and not only pressure-bearing height, little distortion are little, good forming effect, be convenient to demoulding but also can not damage internal airbag, reusable.
Description of drawings:
Fig. 1 is that static pressure pulls out the plan structure schematic diagram that cast-in-place modification is haled the forming pile device.
Fig. 2 is the sectional structure schematic diagram that first kind of static pressure pulls out the pull-up forming pile device of cast-in-place grow.
Fig. 3 is the sectional structure schematic diagram that static pressure pulls out the pull-up stake of cast-in-place grow.
Fig. 4 is that band reinforcing cage tenon groove structure type static pressure pulls out the plan structure schematic diagram of the pull-up stake of cast-in-place grow.
Fig. 5 is that band reinforcing cage triangular structure static pressure pulls out the plan structure schematic diagram of the pull-up stake of cast-in-place grow.
Fig. 6 is that band reinforcing cage T-Type structure static pressure pulls out the plan structure schematic diagram of the pull-up stake of cast-in-place grow.
Fig. 7 is that band reinforcing cage I-shape construction static pressure pulls out the plan structure schematic diagram of the pull-up stake of cast-in-place grow.
Fig. 8 is that band reinforcing cage tubular shape structure static pressure pulls out the plan structure schematic diagram of the pull-up stake of cast-in-place grow.
Fig. 9 is that second kind of static pressure pulls out the sectional structure schematic diagram that cast-in-place modification is haled the forming pile device.
Figure 10 is the structural representation that static pressure pulls out the third implementation method of the pull-up forming pile method of cast-in-place grow.
Figure 11 is the structural representation that static pressure pulls out the 4th kind of implementation method of the pull-up forming pile method of cast-in-place grow
The specific embodiment:
Embodiment 1: with reference to attached Fig. 1 and 2.Static pressure pulls out the pull-up forming pile device of cast-in-place grow by outer tube 1, concrete vibrator assembly 2, reinforcing cage 3, inner core 4, opening stake point 7 and hale device and constitute; Inner core is air bag or tubular, hollow structure or real cored structure, the tubular, hollow structure is foaming tubular, hollow structure or wooden tubular, hollow structure or tubular resin hollow-core construction or tubular metal structure, this example adopts internal airbag, opening stake point 7 is positioned at the lower end of outer tube 1, opening stake point 7 adopts cast irons or cast steel or reinforced concrete structure to make and when the static pressed pile hole, be installed in the lower end of outer tube 1, outer tube 1 adopts steel plate to make, the thickness of steel plate is generally selected between 3～6 centimetres, and shape can be a tubular, rectangle, triangle, T-shaped, I-shaped, H shape, tongue-and-groove type or the like.Inner core 4 is positioned at outer tube 1, internal airbag 4 adopts prior art to make (as high strength fire hose manufacturing technology) and be positioned at outer tube 1 after the stake hole presses, reinforcing cage 3 is positioned at 4 in outer tube 1 and core, concrete vibrator assembly 2 is positioned at reinforcing cage 3 and 4 of inner cores or outer tube 1 and 3 of reinforcing cages and upper and lower mobile under the effect of external force, and concrete vibrator assembly 2 composes in parallel the T-shaped or I-shaped vibrator assembly of annular or rectangle or triangle by the existing concrete vibrator 2 more than 2 or 2.The reinforcing bar of reinforcing cage 3 bottoms is with to hale fixing steel plate 8 affixed, has the reinforcing cage 3 of haling fixing steel plate and is positioned at 2 of outer tube 1 and concrete vibrator assemblies.Internal airbag 4 upper ends are provided with valve 5.Stake point 7 be opening stake point or enlarging opening stake point or tubular conehead stake point and mates with outer tube 1.Outer tube 1 is cylindrical or triangular in shape or be T-shaped or be I-shaped or be H shape.Haling device is prior art, extensively adopts in Pretensioned spun concrete piles, and purpose is haled elongation with the reinforcing bar in the reinforcing cage 3.
Embodiment 2: static pressure pulls out the pull-up forming pile method of cast-in-place grow, the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. inner core is inserted in the reinforcing cage; 6. the concrete vibrator assembly is inserted between inner core and reinforcing cage, progressively concrete is injected in the space that is made of inner core and outer tube then, when concrete injects one section height, starting coagulation upper vibration generator assembly vibrates the time of setting, bubble in the concrete is discharged, after density reaches standard, quiet pulling out on the outer tube moved under the effect of external force, continue starting concrete vibrator assembly, hole wall is closely knit combines with stake to make concrete, once more concrete is injected in the space that is made of internal airbag and outer tube, when concrete injects one section height, start the concrete vibrator assembly once more and vibrate the time of setting, the bubble in the concrete is discharged, after density reaches standard, quiet pulling out on the outer tube moved under the effect of external force once more, continue starting concrete vibrator assembly, make concrete and stake hole wall is closely knit to combine, so circulate, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
Embodiment 3: on the basis of embodiment 1 and 2, the pile tube of formed thereby can be a tongue-and-groove type concrete tubular pile, as accompanying drawing 4; Also can be the triangle pile tube, as accompanying drawing 5; Also can be T-shaped pile tube, as accompanying drawing 6; Also can be I-shaped pile tube, as accompanying drawing 7; Also can be the tubular pile tube, as accompanying drawing 8.All have reinforcing cage 3 in the above-mentioned concrete tubular pile.
Embodiment 4: with reference to accompanying drawing 9 and 10.Static pressure pulls out the pull-up forming pile method of cast-in-place grow, the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. inner core is inserted in the reinforcing cage; 6. concrete is injected in the space that is made of inner core and outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force, once more concrete injected in the space that is made of inner core and outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
Embodiment 5: on the basis of embodiment 2 and 4, inner core 4 is real cored structure and adopts the real cored structure of foaming or the real cored structure of foam.
Embodiment 6: with reference to accompanying drawing 9 and 11.Static pressure pulls out the pull-up forming pile method of cast-in-place grow, the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. concrete is injected the inner chamber of outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force, once more concrete injected the inner chamber that outer tube constitutes, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
What need understand is: though the foregoing description is to the present invention's detailed explanation of contrasting; but these embodiment are just illustrative to the present invention; rather than limitation of the present invention, any innovation and creation that do not exceed in the connotation of the present invention all fall within the scope of protection of the present invention.
Claims (10)
1. a static pressure pulls out the pull-up forming pile device of cast-in-place strong grow, it is characterized in that by outer tube (1), concrete vibrator assembly (2), reinforcing cage (3), inner core (4), opening stake point (7) and hale device and constitute, opening stake point (7) is positioned at the lower end of outer tube (1), inner core (4) is positioned at outer tube (1), reinforcing cage (3) is positioned between outer tube (1) and core (4), concrete vibrator assembly (2) is positioned between reinforcing cage (3) and inner core (4) or between outer tube (1) and reinforcing cage (3) and under the effect of external force, move down, hale device the reinforcing bar in the reinforcing cage (3) is haled elongation.
2. static pressure according to claim 1 pulls out the pull-up forming pile device of cast-in-place grow, it is characterized in that: inner core (4) is air bag or tubular, hollow structure or real cored structure; The tubular, hollow structure is foaming tubular, hollow structure or foam tubulose hollow-core construction or wooden tubular, hollow structure or resin tubulose hollow-core construction or tubular metal hollow-core construction; Real cored structure is real cored structure of foaming or the real cored structure of foam.
3. static pressure according to claim 1 pulls out the pull-up forming pile device of cast-in-place grow, it is characterized in that: concrete vibrator assembly (2) composes in parallel the T-shaped or I-shaped vibrator assembly of annular or rectangle or triangle by the concrete vibrator more than 2 or 2 (2).
4. static pressure according to claim 1 pulls out the pull-up forming pile device of cast-in-place grow, it is characterized in that: the reinforcing bar of reinforcing cage (3) bottom is with to hale fixing steel plate (8) affixed.
5. static pressure according to claim 1 pulls out the pull-up forming pile device of cast-in-place grow, it is characterized in that: stake point (7) mates for enlarging opening stake point or tubular conehead shape stake point and with outer tube (1).
6. static pressure according to claim 1 pulls out the pull-up forming pile device of cast-in-place grow, it is characterized in that: outer tube (1) cylindrical or triangular in shape or be the T-shaped or be I-shaped or H shape or tongue-and-groove shape.
7. a static pressure pulls out the pull-up forming pile method of cast-in-place grow, it is characterized in that: the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. inner core is inserted in the reinforcing cage; 6. the concrete vibrator assembly is inserted between inner core and reinforcing cage, progressively concrete is injected in the space that is made of internal airbag and outer tube then, when concrete injects one section height, starting concrete vibrator assembly vibrates the time of setting, bubble in the concrete is discharged, after density reaches standard, quiet pulling out on the outer tube moved under the effect of external force, continue starting concrete vibrator assembly, hole wall is closely knit combines with stake to make concrete, once more concrete is injected in the space that is made of internal airbag and outer tube, when concrete injects one section height, start the concrete vibrator assembly once more and vibrate the time of setting, the bubble in the concrete is discharged, after density reaches standard, quiet pulling out on the outer tube moved under the effect of external force once more, continue starting concrete vibrator assembly, make concrete and stake hole wall is closely knit to combine, so circulate, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
8. static pressure according to claim 7 pulls out the pull-up forming pile method of cast-in-place grow, it is characterized in that: when inner core is air bag, with the air bag gassy, treat that concrete tentatively solidifies after, internal airbag is discharged, extracted out to gas in the internal airbag get final product, after interior inspection is qualified, seal.
9. a static pressure pulls out the pull-up forming pile method of cast-in-place grow, it is characterized in that: the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. inner core (4) is inserted in the reinforcing cage; 6. concrete is injected in the space that is made of inner core and outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force, once more concrete injected in the space that is made of internal airbag and outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
10. a static pressure pulls out the pull-up forming pile method of cast-in-place grow, it is characterized in that: the outer tube that 1. adopts static pressure method or vibratory drilling method or hammering method will have opening stake point be pressed into or shake into or hammer go into underground; 2. take out the soil in the outer tube; 3. the inner chamber of opening stake point injects certain thickness concrete; 4. the reinforcing bar of reinforcing cage bottom is with to hale fixing steel plate affixed and it is inserted in the chamber of opening stake point, and certain thickness concrete reinjects; 5. concrete is injected the inner chamber of outer tube, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force, once more concrete injected the inner chamber that outer tube constitutes, when concrete injects one section height, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, adopt then hale device with reinforcing cage master rigidity of soft tissues draw extend the intensity that sets after, treat concrete setting, seal after interior inspection is qualified.
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| CNB2005100532343A CN100387788C (en) | 2005-02-17 | 2005-02-17 | Apparatus and method for constructing strength-variable pile in situ by static pressure and drawing |
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| CN114311274A (en) * | 2021-12-03 | 2022-04-12 | 南京钜力智能制造技术研究院有限公司 | High-pressure pouring forming device for concrete tubular pile and tubular pile manufacturing method |
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| 预应力空心管桩在小高层住宅建筑中的应用. 潘琦.施工技术，第32卷第10期. 2003 * |
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