CN1644805A - Apparatus and method for constructing shape-variable pile in situ by static pressure and drawing - Google Patents
Apparatus and method for constructing shape-variable pile in situ by static pressure and drawing Download PDFInfo
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- CN1644805A CN1644805A CN 200510053223 CN200510053223A CN1644805A CN 1644805 A CN1644805 A CN 1644805A CN 200510053223 CN200510053223 CN 200510053223 CN 200510053223 A CN200510053223 A CN 200510053223A CN 1644805 A CN1644805 A CN 1644805A
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Abstract
A static-pressure static-pull method and apparatus for forming the in-situ poured prestressed pile with varible diameter is disclosed. Said apparatus is composed of external pipe, internal core, concrete stamper assemblage between internal core and external pipe and open pile tip at the lower end of external pipe. Its advantages are no deformation of peripheral earth layer, high density and load-bearing power of pile, and easy demoulding as internal air bag is used.
Description
Technical field:
The present invention relates to shaped device and forming method that a kind of static pressure pulls out cast-in-place 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 inside and outside outer tube cavity structure that is attached thereto; 3. inside and outside outer tube cavity structure is squeezed in the ground under the protection of flap valve pilework closure; 4. when inside and outside outer tube cavity structure sinks to predetermined projected depth, in the cavity of inside and outside outer tube cavity structure, evenly inject concrete by the concrete current divider; 5. inside and outside outer tube 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 inside and outside outer tube 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 inside and outside outer tube 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 inside and outside outer tube 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, inside and outside outer tube 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 inside and outside outer tube by force, not only to overcome suction, frictional force between inside and outside outer 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, by built-in reinforcing cage in the molding cavity of pile tube,, satisfy its designing requirement to guarantee the bearing capacity of pile tube; 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, the inner opening that is owing to the stake point, 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 knit (reaching), improve its carrying compressive strength above design standard (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, the inner core of moulding pile tube being designed to inner core (tubular, hollow structure or real cored structure) is three of feature of the present invention, and the tubular, hollow structure both can be the garden 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 four of feature of the present invention that 4 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 hinder the order rainwater to flow into, guaranteed the quality of shaping pile tube.
Technical scheme 1: static pressure pulls out the constructing shape-variable pile in situ shaped device and is made of outer tube (1), concrete vibrator assembly (2), inner core (4) and opening stake point (7), opening stake point (7) is positioned at the lower end of outer tube (1), inner core (4) is positioned at outer tube (1), and concrete vibrator assembly (2) is positioned between outer tube and inner core (4) and upper and lower moving under the effect of external force.
Technical scheme 2: static pressure pulls out the constructing shape-variable pile in situ method of forming, 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. reinforcing cage is inserted in the outer tube; 4. fill the inner chamber of opening stake point with concrete; 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 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 inner core and outer tube, when concrete injects one section height, start the concrete vibrator assembly once more and vibrate the time of setting, bubble in the concrete is discharged, after density reached standard, quiet pulling out on the outer tube moved under the effect of external force once more, continued starting concrete vibrator assembly, hole wall is closely knit combines with stake to make concrete, so circulation until the pile tube moulding, is sealed 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 hollow constructing shape-variable pile in situ method of forming, 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. fill the inner chamber of opening stake point with concrete; 4. inner core (4) is inserted in the outer tube; 5. the concrete vibrator assembly is inserted between inner core (4) and outer tube, concrete is progressively injected in the space that is made of inner core and outer tube, after concrete injects one section height, the concrete vibrator of starting outer tube inboard 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 then behind one section height of concrete injection, the concrete vibrator that starts the outer tube inboard once more vibrates the time of setting, bubble in the concrete is discharged, after density reached standard, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, after interior inspection is qualified, seal.When inner core (4) 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.
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 the plan structure schematic diagram that static pressure pulls out the constructing shape-variable pile in situ shaped device.
Fig. 2 is the sectional structure schematic diagram that first kind of static pressure pulls out the constructing shape-variable pile in situ shaped device.
Fig. 3 is the sectional structure schematic diagram that static pressure pulls out hollow constructing shape-variable pile in situ.
Fig. 4 is the plan structure schematic diagram that band reinforcing cage tenon groove structure type static pressure pulls out hollow constructing shape-variable pile in situ.
Fig. 5 is the plan structure schematic diagram that band reinforcing cage triangular structure static pressure pulls out hollow constructing shape-variable pile in situ.
Fig. 6 is the plan structure schematic diagram that band reinforcing cage T-Type structure static pressure pulls out hollow constructing shape-variable pile in situ.
Fig. 7 is the plan structure schematic diagram that band reinforcing cage I-shape construction static pressure pulls out hollow constructing shape-variable pile in situ.
Fig. 8 is the plan structure schematic diagram that band reinforcing cage tubular shape structure static pressure pulls out hollow constructing shape-variable pile in situ.
Fig. 9 is the sectional structure schematic diagram that second kind of static pressure pulls out the constructing shape-variable pile in situ shaped device.
Figure 10 is the plan structure schematic diagram that tenon groove structure type static pressure pulls out hollow constructing shape-variable pile in situ.
Figure 11 is the plan structure schematic diagram that the triangular structure static pressure pulls out hollow constructing shape-variable pile in situ.
Figure 12 is the plan structure schematic diagram that the T-Type structure static pressure pulls out hollow constructing shape-variable pile in situ.
Figure 13 is the plan structure schematic diagram that the I-shape construction static pressure pulls out hollow constructing shape-variable pile in situ.
Figure 14 is the plan structure schematic diagram that tubular shape structure static pressure pulls out hollow constructing shape-variable pile in situ.
Figure 15 is the sectional structure schematic diagram that the third static pressure pulls out the constructing shape-variable pile in situ shaped device.
Figure 16 is the sectional structure schematic diagram that the 4th kind of static pressure pulls out the constructing shape-variable pile in situ shaped device.
The specific embodiment:
Embodiment 1: with reference to attached Fig. 1 and 2.Static pressure pulls out the constructing shape-variable pile in situ shaped device by outer tube 1, concrete vibrator assembly 2, inner core 4 and opening stake point 7 constitute, inner core 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 pitch tube fat hollow-core construction or tubular metal hollow-core construction, this example adopts internal airbag, 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.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, and concrete vibrator assembly 2 is positioned at outer tube and 4 of internal airbags and upper and lower moving under the effect of external force.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.Reinforcing cage 3 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 H shape.
Embodiment 2: with reference to accompanying drawing 15, on the basis of embodiment 1, inner core 4 is real cored structure and adopts the real cored structure of foaming or the real cored structure of foam.
Embodiment 3: with reference to accompanying drawing 1～3.Static pressure pulls out the hollow constructing shape-variable pile in situ method of forming, 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. reinforcing cage is inserted in the outer tube; 4. fill the inner chamber of opening stake point with concrete; 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 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 inner core and outer tube, when concrete injects one section height, start the concrete vibrator assembly once more and vibrate the time of setting, bubble in the concrete is discharged, after density reached standard, quiet pulling out on the outer tube moved under the effect of external force once more, continued starting concrete vibrator assembly, hole wall is closely knit combines with stake to make concrete, so circulation until the pile tube moulding, is sealed 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.
Embodiment 4: on the basis of embodiment 3, 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 5: static pressure pulls out the hollow constructing shape-variable pile in situ method of forming, 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. fill the inner chamber of opening stake point with concrete; 4. inner core is inserted in the outer tube; 5. the concrete vibrator assembly is inserted between inner core and outer tube, concrete is progressively injected in the space that is made of inner core and outer tube, after concrete injects one section height, the concrete vibrator of starting outer tube inboard 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 then behind one section height of concrete injection, the concrete vibrator that starts the outer tube inboard once more vibrates the time of setting, bubble in the concrete is discharged, after density reached standard, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, after interior inspection is qualified, seal.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.
Embodiment 6: on the basis of embodiment 5, the pile tube of formed thereby can be a tongue-and-groove type concrete tubular pile, as accompanying drawing 10; Also can be the triangle pile tube, as accompanying drawing 11; Also can be T-shaped pile tube, as accompanying drawing 12; Also can be I-shaped pile tube or H pipe stake, as accompanying drawing 13; Also can be the tubular pile tube, as accompanying drawing 14.All there is not reinforcing cage 3 in the above-mentioned concrete tubular pile.
Embodiment 7: with reference to accompanying drawing 16, on the basis of embodiment 5, inner core 4 is real cored structure and adopts the real cored structure of foaming or the real cored structure of foam.
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 kind of static pressure pulls out the constructing shape-variable pile in situ shaped device, it is characterized in that constituting by outer tube (1), concrete vibrator assembly (2), inner core (4) and opening stake point (7), opening stake point (7) is positioned at the lower end of outer tube (1), inner core (4) is positioned at outer tube (1), and concrete vibrator assembly (2) is positioned between outer tube and inner core (4) and upper and lower moving under the effect of external force.
2, static pressure according to claim 1 pulls out the constructing shape-variable pile in situ shaped device, 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 structure; 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 constructing shape-variable pile in situ shaped device, 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 constructing shape-variable pile in situ shaped device, it is characterized in that: reinforcing cage (3) is positioned between outer tube (1) and concrete vibrator assembly (2).
5, static pressure according to claim 2 pulls out the constructing shape-variable pile in situ shaped device, it is characterized in that: internal airbag (4) upper end is provided with valve (5).
6, static pressure according to claim 1 pulls out the constructing shape-variable pile in situ shaped device, it is characterized in that: stake point (7) mates for opening stake point or enlarging opening stake point or tubular conehead shape stake point and with outer tube (1).
7, static pressure according to claim 1 pulls out the constructing shape-variable pile in situ shaped device, it is characterized in that: outer tube (1) cylindrical or triangular in shape or be the T-shaped or be I-shaped or be H shape or tongue-and-groove shape.
8, a kind of static pressure pulls out the constructing shape-variable pile in situ method of forming, 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. reinforcing cage is inserted in the outer tube; 4. fill the inner chamber of opening stake point with concrete; 5. inner core (4) is inserted in the reinforcing cage; 6. the concrete vibrator assembly is inserted between inner core (4) 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 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 inner core and outer tube, when concrete injects one section height, start the concrete vibrator assembly once more and vibrate the time of setting, bubble in the concrete is discharged, after density reached standard, quiet pulling out on the outer tube moved under the effect of external force once more, continued starting concrete vibrator assembly, hole wall is closely knit combines with stake to make concrete, so circulation until the pile tube moulding, is sealed after interior inspection is qualified.
9, a kind of static pressure pulls out the hollow constructing shape-variable pile in situ method of forming, 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. fill the inner chamber of opening stake point with concrete; 4. inner core is inserted in the outer tube; 5. the concrete vibrator assembly is inserted between inner core and outer tube, concrete is progressively injected in the space that is made of inner core and outer tube, after concrete injects one section height, the concrete vibrator of starting outer tube inboard 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 then behind one section height of concrete injection, the concrete vibrator that starts the outer tube inboard once more vibrates the time of setting, bubble in the concrete is discharged, after density reached standard, quiet pulling out on the outer tube moved under the effect of external force once more, so circulation, until the pile tube moulding, after interior inspection is qualified, seal.
10, according to Claim 8 or 9 described static pressures pull out the constructing shape-variable pile in situ method of forming, 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 the gas in the internal airbag get final product.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100532235A CN100387787C (en) | 2005-02-16 | 2005-02-16 | Apparatus and method for constructing shape-variable pile in situ by static pressure and drawing |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100532235A CN100387787C (en) | 2005-02-16 | 2005-02-16 | Apparatus and method for constructing shape-variable pile in situ by static pressure and drawing |
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| CN1644805A true CN1644805A (en) | 2005-07-27 |
| CN100387787C CN100387787C (en) | 2008-05-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072202A (en) * | 2013-02-01 | 2013-05-01 | 江苏东浦管桩有限公司 | Pile toe maker convenient to use |
| CN104760134A (en) * | 2015-02-09 | 2015-07-08 | 江苏龙冠新型材料科技有限公司 | Centrifuging-free manufacturing method of prestressed concrete pipe pile |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158434C (en) * | 2002-01-14 | 2004-07-21 | 河海大学 | Soft foundation composite ground base construction method for field pouring pipe pile with large diameter |
| CN2661771Y (en) * | 2003-12-05 | 2004-12-08 | 郭兆泉 | Reinforced concrete hollow pile technology adopting vibrating tube-sinking cast-in-situ ram machine |
-
2005
- 2005-02-16 CN CNB2005100532235A patent/CN100387787C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103072202A (en) * | 2013-02-01 | 2013-05-01 | 江苏东浦管桩有限公司 | Pile toe maker convenient to use |
| CN103072202B (en) * | 2013-02-01 | 2014-01-08 | 江苏东浦管桩有限公司 | Pile toe maker convenient to use |
| CN104760134A (en) * | 2015-02-09 | 2015-07-08 | 江苏龙冠新型材料科技有限公司 | Centrifuging-free manufacturing method of prestressed concrete pipe pile |
| CN104760134B (en) * | 2015-02-09 | 2017-05-24 | 江苏龙冠新型材料科技有限公司 | Centrifuging-free manufacturing method of prestressed concrete pipe pile |
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| CN100387787C (en) | 2008-05-14 |
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Granted publication date: 20080514 Termination date: 20120216 |