CN105751358A - Production process of concrete hollow square pile - Google Patents
Production process of concrete hollow square pile Download PDFInfo
- Publication number
- CN105751358A CN105751358A CN201610097848.XA CN201610097848A CN105751358A CN 105751358 A CN105751358 A CN 105751358A CN 201610097848 A CN201610097848 A CN 201610097848A CN 105751358 A CN105751358 A CN 105751358A
- Authority
- CN
- China
- Prior art keywords
- square pile
- hollow square
- concrete
- concrete hollow
- production technology
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/20—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the shaping being effected by centrifugal or rotational moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
- B28B7/168—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes for holders or similar hollow articles, e.g. vaults, sewer pits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
- B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
Abstract
The invention discloses a production process of a concrete hollow square pile.The cross section of the concrete hollow square pile is square.A center square hole penetrating through the whole concrete hollow square pile is formed in the center of the concrete hollow square pile in the longitudinal axis direction of the concrete hollow square pile.The concrete hollow square pile is manufactured through centrifugal molding.According to the production process of the concrete hollow square pile, the problem that a centre hole of a square pile produced through an existing centrifugation method is a round hole can be solved, and the wall thickness of the concrete pile is the same.
Description
Technical field
The present invention relates to the improvement of the moulding process of concrete hollow square pile in field of civil engineering or the improvement of the production technology of precast concrete open tubular column.
Background technology
Existing prefabricated concrete hollow square pile mostly adopts centrifugal casting molding, and central authorities are circular hole, forms the cross section of square-outside and round-inside, and the wall thickness of stake differs, and concrete is skewness on cross section, causes concrete waste；And cause that in work progress, rate of loss pile is too high, hide some dangers for the safety of building.
To be the patent disclosure of 2007100685456 a kind of adopts centrifuging to produce the technology of concrete square pile for application number, and this square pile cross-sectional shape is square, and central authorities are circular hole.The forming method of application number a kind of hollow square pile that has been the patent disclosure of 2010102568497, the moulding process mentioning existing pile tube and hollow square pile in application documents is centrifugal forming, pile center's hollow parts shape of centrifugal forming for circular, which discloses a kind of hollow square pile adopting traditional vibrating forming explained hereafter center to have the cross section of square through hole to be square certainly for this.
Summary of the invention
The present invention provides a kind of centrifugal casting to produce the production technology of precast concrete hollow square pile or open tubular column, makes concrete hollow square pile or open tubular column that central authorities are square hole.
The precast concrete hollow square pile production technology that the present invention proposes adopts the moulding prefabricated concrete hollow square pile of centrifugal casting, the cross section of described concrete hollow square pile is square, and along described concrete hollow square pile y direction, has the center square hole running through whole concrete hollow square pile at described concrete hollow square pile center.
Described concrete hollow square pile production technology, comprises the steps: a, prepares reinforcement cage skeleton；B, prepare mould；C, steel reinforcement cage is arranged in mould；D, prepare concrete and concrete is inserted mould；E, put into centrifuge is centrifuged；The demoulding after f, maintenance.
In described concrete hollow square pile production technology, described mould includes external mold and internal mold, in the space that described concrete is formed between described external mold and internal mold.Described steel reinforcement cage is arranged between external mold and internal mold.
In order to increase the stability of internal mold, reinforcing bar, FRP muscle etc. are set between external mold and internal mold and support.Described support one end is fixed on external mold, and the other end contacts with internal mold, it is prevented that internal mold displacement, deformation during centrifugal forming.
Described external mold and internal mold corner are arc-shaped so that make square pile corner, square hole corner, center be stress relieving arc chord angle；In order to conveniently stripped, inside described external mold, outside internal mold, scribble interleaving agent.
Described internal mold is an entirety, or described internal mold is made up of 2 or 4 submodules.When described internal mold is made up of 2 or 4 submodules, submodule is adjacent to together；Or there is gap between submodule；When having gap can make concrete filled between submodule, concrete is filled out in inner space point space, and when centrifugal forming along with concrete compaction increases, the filled out concrete in gap place enters pile lining, and the wall thickness of stake keeps thickness uniform.
There is elongated longitudinal fluting the every middle part on one side of described internal mold, and longitudinal fluting is typically in the middle of internal mold, and the reinforced deficiency of concrete that when can avoid centrifugal forming after inserting concrete, concrete density increase causes, the every interior thickness of cross section making stake is uniform；After forming pile, concrete and internal mold groove position generally have gap, are also beneficial to the demoulding.The elongated groove of the every middle part on one side of described internal mold can be one or multi-channel.The method that may be used without the every slight concave on one side of internal mold, namely the every of internal mold is arc, and indent fills out concrete when inserting concrete in mould more, ensures that cross section every one side interior thickness of stake is uniform after concrete centrifugal is closely knit.
Described internal mold is retained in hollow square pile not to be removed.Described internal mold adopts sheet metal to be made；Or described internal mold adopts fiber-reinforced composite material board to be made；Or described internal mold is that cement plate is made.Internal mold is retained in hollow pile, can avoid removing the problem that internal mold brings.
Compared with prior art, the present invention adopts centrifugal casting to produce the middle part concrete hollow pile for square hole to the present invention.The component of existing employing centrifugal casting explained hereafter, the hole at middle part is only circular hole.Production technology of the present invention, by arranging internal mold, with the molding of internal mold guiding concrete, produces the concrete hollow pile that middle part is square hole；Hollow pile profile can be circular, it is preferred that for square, and namely adopting invention production technology can be the concrete hollow square pile of square hole with the centrifugal casting production center.Adopt this law production technology also can produce precast concrete column, in the middle part of post, have square hole.When hollow square pile centrifugal forming, even if the concrete packing of external mold and interior intermode is real before centrifugal forming, under centrifugal action, concrete is assembled to stake corner, density increases, and stake side slowly leakiness hole, cavity can even occur；Arranging elongated longitudinal fluting in the every middle part on one side of internal mold and fill up concrete, along with concrete is assembled to stake corner during centrifugal forming, groove inner concrete is filled to a side, it is ensured that the wall thickness thickness of concrete hollow square pile is uniform, concrete compaction.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of a kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 2 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 3 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 4 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 5 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 6 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 7 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 8 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Fig. 9 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Figure 10 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Figure 11 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Figure 12 is the schematic cross-section of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the precast concrete hollow square pile production technology of the present invention is described in detail.
The precast concrete hollow square pile production technology that the present invention proposes adopts the moulding prefabricated concrete hollow square pile of centrifugal casting, the cross section of described concrete hollow square pile is square, and along described concrete hollow square pile y direction, has the center square hole running through whole concrete hollow square pile at described concrete hollow square pile center.
Concrete hollow square pile production technology of the present invention, comprises the steps: a, prepares reinforcement cage skeleton；B, prepare mould；C, steel reinforcement cage is arranged in mould；D, prepare concrete and concrete is inserted mould；E, put into centrifuge is centrifuged；The demoulding after f, maintenance.
A kind of schematic cross-section such as Fig. 1 of the embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention, described mould is columnar mould, the schematic cross-section of mould is as shown in Figure 1, it is made up of external mold 1 and internal mold 2, when making square pile, concrete is filled out between external mold 1 and internal mold 2, and steel reinforcement cage is arranged between external mold 1 and internal mold 2；Mould and centrifugal forming facility 3 are connected (being diagrammatically only by out the cross section of mould in accompanying drawing 1, other parts such as centrifugal forming equipment are not shown, also without the method that concrete regulation concrete is filled into external mold and interior intermode) by supporting；Described external mold 1 and internal mold 2 corner are arc-shaped so that make square pile corner, square hole corner, center be stress relieving arc chord angle.In order to prevent the displacement of internal mold, deformation, arranging the support 4 that steel, fibre reinforced composites etc. make between external mold 1 and internal mold 2, as in figure 2 it is shown, described support 4 one end is fixed on external mold 1, the other end contacts with internal mold 2, is beneficial to extraction internal mold.
The internal mold 2 of precast concrete the adopted mould of hollow square pile production technology of the present invention is one overall, as shown in Figure 1, Figure 2, Fig. 3；In another embodiment, described internal mold 2 is made up of 2 submodules, and submodule contacts, such as Fig. 4 and Fig. 5；In another embodiment, described internal mold 2 is made up of 4 submodules, such as Fig. 6.
The internal mold 2 of precast concrete the adopted mould of hollow square pile production technology of the present invention is made up of 2 submodules, has gap, such as Fig. 7 between submodule；In order to increase the stability of internal mold, support is set between submodule, such as Fig. 9.In another embodiment, described internal mold 2 is made up of 4 submodules, has gap, such as Fig. 8 between submodule；In order to increase the stability of internal mold, support is set between submodule, such as Figure 10.In order to increase the stability of internal mold, one implements such as Figure 11, and described internal mold 2 is made up of 4 submodules, has gap between submodule, arranges cylindrical support body 6 in submodule centre, contacts with submodule；Cylindrical support body 6 is also convenient removes submodule, namely during form removal, first extracts cylindrical support body 6 out, then extracts internal mold 2 out.In another embodiment, such as Figure 12, cylindrical support body 6 arranging pier nose body 7, arrange expansion head groove 8 simultaneously on internal mold 2, pier nose body 7 inserts and expands in head groove 8, reaches the purpose of fixing internal mold.By preset clearance between submodule, when being filled into concrete in a mold, part concrete is filled out in the gap between submodule, during centrifugal forming, along with concrete density increase, between submodule, the concrete in gap enriches the wall thickness place of square pile, it is ensured that molding rear stake uniform wall thickness.
Schematic cross-section such as Fig. 3 of the another kind of embodiment of precast concrete the adopted mould of hollow square pile production technology of the present invention, there is elongated groove 5 the every middle part of internal mold 2；By arranging elongated groove 5 shape according to concrete property regulation groove 5, when fill concrete, groove 5 place is full of concrete；During centrifugal forming, along with concrete density increases, the concrete at groove 5 place enriches the wall thickness place of square pile, it is ensured that molding rear stake uniform wall thickness；And molding rearward recess 5 place internal mold departs from concrete, is also beneficial to form removal.In another embodiment, internal mold 2 is become by 2 or 4 sub-modules, submodule arranges groove 5, such as Fig. 5, Fig. 6.
Described knockout course can be divided into two steps, when namely preliminary curing concrete is to relatively low-intensity, extracts internal mold 2 out, treats that concrete reaches predetermined strength and takes off external mold 1 again.
Adopt the technology of the present invention, during centrifugal forming concrete-pile, guided by internal mold 2, the distributing position of confined concrete, form center square hole；When centrifugal forming, square pile corner concrete compaction can be ensured, it is also ensured that square pile each limit concrete compaction, particularly make the wall thickness of stake keep thickness uniform.Adopt the technology of the present invention can also produce hollow circular corner triangular pile with centrifugal casting.
Claims (10)
1. a concrete hollow square pile production technology, the cross section of described concrete hollow square pile is square, along described concrete hollow square pile y direction, there is at described concrete hollow square pile center the center square hole running through whole concrete hollow square pile, it is characterized in that, adopt concrete hollow square pile described in centrifugal casting molding.
2. concrete hollow square pile production technology according to claim 1, it is characterised in that described production technology comprises the steps:
A, prepare reinforcement cage skeleton；
B, prepare mould；
C, steel reinforcement cage is arranged in mould；
D, prepare concrete and concrete is inserted mould；
E, put into centrifuge is centrifuged；
The demoulding after f, maintenance.
3. concrete hollow square pile production technology according to claim 2, it is characterised in that described mould includes external mold and internal mold, described concrete is filled out in the space formed between described external mold and internal mold.
4. concrete hollow square pile production technology according to claim 3, it is characterised in that inside described external mold, scribble interleaving agent outside internal mold.
5. concrete hollow square pile production technology according to claim 2, it is characterised in that between described external mold and internal mold, support is set.
6. concrete hollow square pile production technology according to claim 3, it is characterised in that described internal mold is an integral inside molding.
7. concrete hollow square pile production technology according to claim 3, it is characterised in that described internal mold is made up of two or four submodule.
8. concrete hollow square pile production technology according to claim 7, it is characterised in that leave gap between described submodule.
9. concrete hollow square pile production technology according to claim 3, it is characterised in that there is elongated groove the every middle part of described internal mold.
10. concrete hollow square pile production technology according to claim 1 and 2, it is characterised in that described internal mold is not removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097848.XA CN105751358A (en) | 2016-02-23 | 2016-02-23 | Production process of concrete hollow square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610097848.XA CN105751358A (en) | 2016-02-23 | 2016-02-23 | Production process of concrete hollow square pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105751358A true CN105751358A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610097848.XA Pending CN105751358A (en) | 2016-02-23 | 2016-02-23 | Production process of concrete hollow square pile |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04107104A (en) * | 1990-08-29 | 1992-04-08 | Haneda Fume Can Kk | Manufacture of hollow concrete pillar with rectangular crosssection and frame for molding thereof |
| CN1597286A (en) * | 2004-09-16 | 2005-03-23 | 颜小荣 | Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method |
| KR20110044181A (en) * | 2011-03-21 | 2011-04-28 | 재단법인 포항산업과학연구원 | Manufacturing method of steel-concrete composite pile and a mould to manufacture the pile |
| JP2012240204A (en) * | 2011-05-14 | 2012-12-10 | Nippon Concrete Ind Co Ltd | Concrete pipe having high durability, and method for manufacturing the same |
| CN202865827U (en) * | 2012-07-20 | 2013-04-10 | 陈建强 | Multi-hole type hollow pile easy to sink |
| CN104018498A (en) * | 2014-06-12 | 2014-09-03 | 南通中技桩业有限公司 | Prestress hollow concrete square pile and forming method thereof |
| CN105113385A (en) * | 2015-08-12 | 2015-12-02 | 刘文海 | Prefabricated steel tube high-strength concrete column pier and preparation method thereof |
-
2016
- 2016-02-23 CN CN201610097848.XA patent/CN105751358A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04107104A (en) * | 1990-08-29 | 1992-04-08 | Haneda Fume Can Kk | Manufacture of hollow concrete pillar with rectangular crosssection and frame for molding thereof |
| CN1597286A (en) * | 2004-09-16 | 2005-03-23 | 颜小荣 | Method of manufacturing prestressed high strength concrete hollow square pile centrifugal, steam, maintenance method |
| KR20110044181A (en) * | 2011-03-21 | 2011-04-28 | 재단법인 포항산업과학연구원 | Manufacturing method of steel-concrete composite pile and a mould to manufacture the pile |
| JP2012240204A (en) * | 2011-05-14 | 2012-12-10 | Nippon Concrete Ind Co Ltd | Concrete pipe having high durability, and method for manufacturing the same |
| CN202865827U (en) * | 2012-07-20 | 2013-04-10 | 陈建强 | Multi-hole type hollow pile easy to sink |
| CN104018498A (en) * | 2014-06-12 | 2014-09-03 | 南通中技桩业有限公司 | Prestress hollow concrete square pile and forming method thereof |
| CN105113385A (en) * | 2015-08-12 | 2015-12-02 | 刘文海 | Prefabricated steel tube high-strength concrete column pier and preparation method thereof |
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Application publication date: 20160713 |