CN103223693B - A kind of pre-stress hollow square pile centrifuging process - Google Patents
A kind of pre-stress hollow square pile centrifuging process Download PDFInfo
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- CN103223693B CN103223693B CN201310107037.XA CN201310107037A CN103223693B CN 103223693 B CN103223693 B CN 103223693B CN 201310107037 A CN201310107037 A CN 201310107037A CN 103223693 B CN103223693 B CN 103223693B
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Abstract
The present invention relates to a kind of pre-stress hollow square pile centrifuging process, step is: a) adopt low speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is that 4min centrifugal speed is between 60-75r/min; B) in adopting pre-stress hollow square pile mould, low speed carries out centrifugal, and centrifugation time is 1.5min, and centrifugal speed is between 125-155r/min; C) adopt middling speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is 2min, and centrifugal speed is between 215-245r/min; D) adopt high speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is 1.5min, and centrifugal speed is between 305-335r/min; E) adopt high speed to carry out to pre-stress hollow square pile mould centrifugal, centrifugation time is 4min, and centrifugal speed is between 395-425r/min.The invention has the advantages that: concrete material is evenly distributed more, makes pile body more improve pile strength, shorten the time needed for centrifuging process simultaneously.
Description
Technical field
The present invention relates to a kind of pre-stress hollow square pile centrifuging process, specifically a kind of centrifuging process that can shorten the centrifuging process time, concrete material is evenly distributed more.
Background technology
Hollow square pile has 3 superiority than pile tube: the first, outer cross section is the circular stacking preferably of square ratio, the square-section of hollow square pile is more conducive to pile connection construction than circle, and also having is exactly static pressure construction hollow core square pile can not image tube stake be easy is like that caught broken; The second, in equal area physical form, circumference is minimum, and namely the cylindrical in hollow square pile cross section grows the Zhou Chang great of the pile tube generally amassed than same cross-sectional, can illustrate by simply calculating.For the pile-type of the friction pile based on side friction and point friction pile, hollow square pile takes advantage; Three, identical sectional area, hollow square pile than pile tube cross sectional moment of inertia more greatly.
In the prior art, when hollow square pile is shaping, adopt centrifuging process shaping, and existing centrifuging process has low speed, middle low speed, middling speed, high speed four-stage carry out, when adopting such centrifuging process shaping, the required time is long.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of centrifuging process that can shorten the centrifuging process time, concrete material is evenly distributed more.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of pre-stress hollow square pile centrifuging process, it is characterized in that: described step is specially: a) adopt low speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is that 4min centrifugal speed is between 60-75r/min; B) in adopting pre-stress hollow square pile mould, low speed carries out centrifugal, and centrifugation time is 1.5min, and centrifugal speed is between 125-155r/min; C) adopt middling speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is 2min, and centrifugal speed is between 215-245r/min; D) adopt high speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is 1.5min, and centrifugal speed is between 305-335r/min; E) adopt high speed to carry out to pre-stress hollow square pile mould centrifugal, centrifugation time is 4min, and centrifugal speed is between 395-425r/min.
Further, described pre-stress hollow square pile employing specification is the hollow square pile of φ 300, and low-speed centrifugal rotating speed is 70r/min, low-medium speed centrifugal rotational speed is 150r/min, medium-speed centrifuge rotating speed is 240r/min, and high speed centrifugal rotational speed is 330r/min, and high speed centrifugation rotating speed is 420r/min.
Further, described pre-stress hollow square pile employing specification is the hollow square pile of φ 350, and low-speed centrifugal rotating speed is 70r/min, low-medium speed centrifugal rotational speed is 140r/min, medium-speed centrifuge rotating speed is 240r/min, and high speed centrifugal rotational speed is 330r/min, and high speed centrifugation rotating speed is 420r/min.
Further, described pre-stress hollow square pile employing specification is the hollow square pile of φ 400, and low-speed centrifugal rotating speed is 65r/min, low-medium speed centrifugal rotational speed is 130r/min, medium-speed centrifuge rotating speed is 230r/min, and high speed centrifugal rotational speed is 330r/min, and high speed centrifugation rotating speed is 410r/min.
Further, described pre-stress hollow square pile employing specification is the hollow square pile of φ 450, and low-speed centrifugal rotating speed is 65r/min, low-medium speed centrifugal rotational speed is 130r/min, medium-speed centrifuge rotating speed is 230r/min, and high speed centrifugal rotational speed is 320r/min, and high speed centrifugation rotating speed is 400r/min.
Further, described pre-stress hollow square pile employing specification is the hollow square pile of φ 500, and low-speed centrifugal rotating speed is 65r/min, low-medium speed centrifugal rotational speed is 130r/min, medium-speed centrifuge rotating speed is 220r/min, and high speed centrifugal rotational speed is 310r/min, and high speed centrifugation rotating speed is 400r/min.
The invention has the advantages that: the four-stage of original centrifuging process is improved to now low speed, middle low speed, middling speed, high speed, high speed double teacher, more be evenly distributed to make concrete material, pile body is made more to improve pile strength, and the centrifuging process after improving, also shorten in the time, improve operating efficiency.
Detailed description of the invention
Table 1 is centrifuging process rotating speed of the prior art and time, and table 2 is rotating speed and the time of centrifuging process of the present invention, and table 3 is just with the contrast that the square pile that existing technique and explained hereafter of the present invention go out samples.
Illustrating pre-stress hollow square pile centrifuging process of the present invention below in conjunction with table 1 and table 2, is the pre-stress hollow square pile of φ 300 specification equally, when adopting old technique to produce, four-stage altogether, low-speed stage, rotating speed 70r/min, centrifugation time is 4min; The low-medium speed stage, rotating speed 150r/min, centrifugation time is 1min; In the middling speed stage, rotating speed is 260r/min, and centrifugation time is 3min; High speed stage, rotating speed is 440r/min, and centrifugation time is 6min.Adopt new technology when producing, altogether double teacher, low-speed stage, rotating speed is 70r/min, and centrifugation time is 4min; In the low-medium speed stage, rotating speed is 150r/min, and centrifugation time is 1.5min; In the middling speed stage, rotating speed is 240r/min, and centrifugation time is 2min; In the high speed stage, rotating speed is 330r/min, and centrifugation time is 1.5min; High speed stage, rotating speed is 420r/min, and centrifugation time is 4min.
The pre-stress hollow square pile of φ 350 specification equally, when adopting old technique to produce, four-stage altogether, low-speed stage, rotating speed 70r/min, centrifugation time is 4min; The low-medium speed stage, rotating speed 140r/min, centrifugation time is 1min; In the middling speed stage, rotating speed is 280r/min, and centrifugation time is 3min; High speed stage, rotating speed is 430r/min, and centrifugation time is 6min.Adopt new technology when producing, altogether double teacher, low-speed stage, rotating speed is 70r/min, and centrifugation time is 4min; In the low-medium speed stage, rotating speed is 140r/min, and centrifugation time is 1.5min; In the middling speed stage, rotating speed is 240r/min, and centrifugation time is 2min; In the high speed stage, rotating speed is 330r/min, and centrifugation time is 1.5min; High speed stage, rotating speed is 420r/min, and centrifugation time is 4min.
The pre-stress hollow square pile of φ 400 specification equally, when adopting old technique to produce, four-stage altogether, low-speed stage, rotating speed 65r/min, centrifugation time is 4min; The low-medium speed stage, rotating speed 130r/min, centrifugation time is 1min; In the middling speed stage, rotating speed is 300r/min, and centrifugation time is 3min; High speed stage, rotating speed is 420r/min, and centrifugation time is 6min.Adopt new technology when producing, altogether double teacher, low-speed stage, rotating speed is 65r/min, and centrifugation time is 4min; In the low-medium speed stage, rotating speed is 130r/min, and centrifugation time is 1.5min; In the middling speed stage, rotating speed is 230r/min, and centrifugation time is 2min; In the high speed stage, rotating speed is 330r/min, and centrifugation time is 1.5min; High speed stage, rotating speed is 410r/min, and centrifugation time is 4min.
The pre-stress hollow square pile of φ 450 specification equally, when adopting old technique to produce, four-stage altogether, low-speed stage, rotating speed 65r/min, centrifugation time is 4min; The low-medium speed stage, rotating speed 130r/min, centrifugation time is 1min; In the middling speed stage, rotating speed is 300r/min, and centrifugation time is 3min; High speed stage, rotating speed is 410r/min, and centrifugation time is 6min.Adopt new technology when producing, altogether double teacher, low-speed stage, rotating speed is 65r/min, and centrifugation time is 4min; In the low-medium speed stage, rotating speed is 130r/min, and centrifugation time is 1.5min; In the middling speed stage, rotating speed is 230r/min, and centrifugation time is 2min; In the high speed stage, rotating speed is 320r/min, and centrifugation time is 1.5min; High speed stage, rotating speed is 400r/min, and centrifugation time is 4min.
The pre-stress hollow square pile of φ 500 specification equally, when adopting old technique to produce, four-stage altogether, low-speed stage, rotating speed 65r/min, centrifugation time is 4min; The low-medium speed stage, rotating speed 130r/min, centrifugation time is 1min; In the middling speed stage, rotating speed is 300r/min, and centrifugation time is 3min; High speed stage, rotating speed is 400r/min, and centrifugation time is 6min.Adopt new technology when producing, altogether double teacher, low-speed stage, rotating speed is 65r/min, and centrifugation time is 4min; In the low-medium speed stage, rotating speed is 130r/min, and centrifugation time is 1.5min; In the middling speed stage, rotating speed is 220r/min, and centrifugation time is 2min; In the high speed stage, rotating speed is 310r/min, and centrifugation time is 1.5min; High speed stage, rotating speed is 400r/min, and centrifugation time is 4min.
Old technique and new technology are contrasted, be no matter the pre-stress hollow square pile of which kind of specification, old technique required time is 14min, and new technology only needs 13min, and time aspect saves.And as can be seen from the data of table 3, the square pile using new technology to produce is greatly improved in intensity.
Table 1
Table 2
Claims (6)
1. a pre-stress hollow square pile centrifuging process, is characterized in that: described step is specially: a) adopt low speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is that 4min centrifugal speed is between 60-75r/min; B) in adopting pre-stress hollow square pile mould, low speed carries out centrifugal, and centrifugation time is 1.5min, and centrifugal speed is between 125-155r/min; C) adopt middling speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is 2min, and centrifugal speed is between 215-245r/min; D) adopt high speed to carry out centrifugal to pre-stress hollow square pile mould, centrifugation time is 1.5min, and centrifugal speed is between 305-335r/min; E) adopt high speed to carry out to pre-stress hollow square pile mould centrifugal, centrifugation time is 4min, and centrifugal speed is between 395-425r/min.
2. pre-stress hollow square pile centrifuging process according to claim 1, it is characterized in that: described pre-stress hollow square pile employing specification is the hollow square pile of φ 300mm, low-speed centrifugal rotating speed is 70r/min, low-medium speed centrifugal rotational speed is 150r/min, medium-speed centrifuge rotating speed is 240r/min, high speed centrifugal rotational speed is 330r/min, and high speed centrifugation rotating speed is 420r/min; Described Φ represents the external diameter of a circle in hollow square pile cross section.
3. pre-stress hollow square pile centrifuging process according to claim 1, it is characterized in that: described pre-stress hollow square pile employing specification is the hollow square pile of φ 350, low-speed centrifugal rotating speed is 70r/min, low-medium speed centrifugal rotational speed is 140r/min, medium-speed centrifuge rotating speed is 240r/min, high speed centrifugal rotational speed is 330r/min, and high speed centrifugation rotating speed is 420r/min; Described Φ represents the external diameter of a circle in hollow square pile cross section.
4. pre-stress hollow square pile centrifuging process according to claim 1, it is characterized in that: described pre-stress hollow square pile employing specification is the hollow square pile of φ 400, low-speed centrifugal rotating speed is 65r/min, low-medium speed centrifugal rotational speed is 130r/min, medium-speed centrifuge rotating speed is 230r/min, high speed centrifugal rotational speed is 330r/min, and high speed centrifugation rotating speed is 410r/min; Described Φ represents the external diameter of a circle in hollow square pile cross section.
5. pre-stress hollow square pile centrifuging process according to claim 1, it is characterized in that: described pre-stress hollow square pile employing specification is the hollow square pile of φ 450, low-speed centrifugal rotating speed is 65r/min, low-medium speed centrifugal rotational speed is 130r/min, medium-speed centrifuge rotating speed is 230r/min, high speed centrifugal rotational speed is 320r/min, and high speed centrifugation rotating speed is 400r/min; Described Φ represents the external diameter of a circle in hollow square pile cross section.
6. pre-stress hollow square pile centrifuging process according to claim 1, it is characterized in that: described pre-stress hollow square pile employing specification is the hollow square pile of φ 500, low-speed centrifugal rotating speed is 65r/min, low-medium speed centrifugal rotational speed is 130r/min, medium-speed centrifuge rotating speed is 220r/min, high speed centrifugal rotational speed is 310r/min, and high speed centrifugation rotating speed is 400r/min; Described Φ represents the external diameter of a circle in hollow square pile cross section.
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| CN103434020B (en) * | 2013-09-06 | 2015-09-16 | 天津永生鑫和管桩有限公司 | The production method of non-evaporating pressure prestressed concrete pipe pile is starched in a kind of nothing left |
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| CN1563601A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Concrete pipe pile mixed by steel fiber and fabricating method |
| CN1746434A (en) * | 2005-07-22 | 2006-03-15 | 上海二十冶金混凝土构件有限公司 | Centrifugal tubular pile with concrete of thin-wall steel pipe and production thereof |
| CN1958261A (en) * | 2006-11-17 | 2007-05-09 | 河南省电力勘测设计院 | Method for manufacturing wire pole from steel fiber concrete with no bracing wire |
| JP4039709B2 (en) * | 1997-03-31 | 2008-01-30 | 太平洋セメント株式会社 | Centrifugal force molded body and manufacturing method thereof |
| CN102848464A (en) * | 2012-08-30 | 2013-01-02 | 福建省大地管桩有限公司 | No-residual slurry forming technology of centrifugal tubular pile |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4039709B2 (en) * | 1997-03-31 | 2008-01-30 | 太平洋セメント株式会社 | Centrifugal force molded body and manufacturing method thereof |
| CN1563601A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Concrete pipe pile mixed by steel fiber and fabricating method |
| CN1746434A (en) * | 2005-07-22 | 2006-03-15 | 上海二十冶金混凝土构件有限公司 | Centrifugal tubular pile with concrete of thin-wall steel pipe and production thereof |
| CN1958261A (en) * | 2006-11-17 | 2007-05-09 | 河南省电力勘测设计院 | Method for manufacturing wire pole from steel fiber concrete with no bracing wire |
| CN102848464A (en) * | 2012-08-30 | 2013-01-02 | 福建省大地管桩有限公司 | No-residual slurry forming technology of centrifugal tubular pile |
Non-Patent Citations (1)
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| 基于正交试验法的管桩离心工艺优化;何建明;《宁波大学学报(理工版)》;20060930(第03期);表9 优化的离心工艺参数 * |
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Granted publication date: 20151118 Termination date: 20170329 |