CN103114582A - Pre-tensioning method prestressed concrete chamfered pillar - Google Patents
Pre-tensioning method prestressed concrete chamfered pillar Download PDFInfo
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- CN103114582A CN103114582A CN2013100391212A CN201310039121A CN103114582A CN 103114582 A CN103114582 A CN 103114582A CN 2013100391212 A CN2013100391212 A CN 2013100391212A CN 201310039121 A CN201310039121 A CN 201310039121A CN 103114582 A CN103114582 A CN 103114582A
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- corner cut
- stake
- prestressed concrete
- presstressed reinforcing
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Abstract
The invention discloses a pre-tensioning method prestressed concrete chamfered pillar. The pre-tensioning method prestressed concrete chamfered pillar comprises a concrete pile body with a plurality of chamfers and a steel reinforcement cage which is located in the concrete pile body, wherein the steel reinforcement cage comprises a spiral stirrup, a prestressed rib and an anchoring rib, the transversal surface of the steel reinforcement cage is a polygon with chamfers, and the chamfers are arc-shaped. The chamfered pillar is reasonable in structure and good in mechanical property.
Description
Technical field
The present invention relates to pile tube, the stake of especially a kind of pretensioning prestressed concrete corner cut.
Background technology
The pile tube ubiquity structure of prior art, the irrational problem of arrangement of reinforcement, unbalance stress, tension, resistance to compression and anti-bending strength are relatively poor everywhere to cause pile tube.
Summary of the invention
Goal of the invention: the purpose of this invention is to provide a kind of pretensioning prestressed concrete corner cut stake of mechanical property excellence.
Technical scheme: pretensioning prestressed concrete corner cut of the present invention stake, comprise the concrete pile body with a plurality of corner cuts and the reinforcing cage that is positioned at described concrete pile body inside, described reinforcing cage comprises spiral stirrup, presstressed reinforcing steel and anchor rib, the cross section of described reinforcing cage is the polygon with corner cut, and described corner cut is arc.
Described corner cut stake also comprises erection hoop reinforcement, and described spiral stirrup is positioned at the outside of described erection hoop reinforcement.
Described erection hoop reinforcement is the polygon with corner cut, and described corner cut is arc.
Described concrete pile body has four long limits and four incisal angle edges, and described reinforcing cage is the quadrangle with four arc corner cuts.
General, described presstressed reinforcing steel is 12, and 1 presstressed reinforcing steel is set on every arc incisal angle edge, and 2 presstressed reinforcing steels evenly are set on every long limit.Described anchor rib is 6, respectively is provided with one on one group of relative limit, and between described 2 presstressed reinforcing steels, another is organized on relative limit and respectively is provided with two, and is positioned at outside described 2 presstressed reinforcing steels.
During less than 300mm, described presstressed reinforcing steel is 8, and 2 presstressed reinforcing steels are set on each arc corner cut when the length of side of described pile body.Described anchor rib is 4, arranges one on every limit.
2 presstressed reinforcing steels of described arc incisal angle edge and the angle of the described pile tube line of centres are 10 ~ 45 °.
Described corner cut stake is hollow pile, and the thickness of described concrete pile body is 70 ~ 100mm, and the described incisal angle edge length of side is 25 ~ 70mm.
Beneficial effect: corner cut pilework of the present invention, arrangement of reinforcement are reasonable, make it have excellent mechanical property.
Description of drawings
Fig. 1 is the cross-sectional view of an embodiment of the present invention;
Fig. 2 is the cross-sectional view of the another kind of embodiment of the present invention;
Fig. 3 is longitudinal section of the present invention.
The specific embodiment:
As shown in Figure 1, the square corner cut stake of the present invention 400 * 400mm model comprises the reinforcing cage 2 that has concrete pile body 1 and be positioned at concrete pile body 1 inside, described reinforcing cage 2 mainly comprises spiral stirrup 21, presstressed reinforcing steel 22, anchor rib 23 and erection hoop reinforcement 25, the cross section that outstanding feature is reinforcing cage 2 is the polygon with corner cut 24, and corner cut 24 is arc.Corner cut is that the benefit of arc is: make the concrete thickness of the presstressed reinforcing steel that is positioned on this incisal angle edge inside and outside both sides basic identical, can also reduce the stress of long limit and minor face junction.Particularly, erection hoop reinforcement 21 polygon for having corner cut 24, and described corner cut 24 is positioned at the outside of erection hoop reinforcement 21 for arc spiral stirrup 21, thus form the basic structure of reinforcing cage.
From the outside or cross section, this concrete pile body 1 has four long limits and four incisal angle edges, the quadrangle of reinforcing cage 2 for having four arc corner cuts.The arrangement of reinforcement scheme is 12 of presstressed reinforcing steels, and 1 presstressed reinforcing steel 22 is set on every arc incisal angle edge, and 2 presstressed reinforcing steels evenly are set on every long limit.Anchor rib 23 is 6, respectively is provided with one on one group of relative limit, and between above-mentioned 2 presstressed reinforcing steels 22, another is organized on relative limit and respectively is provided with two, and is positioned at outside 2 presstressed reinforcing steels 22.When can making pile tube intensity up to specification, this design reduces the consumption of reinforcing bar, economical with materials, and pile tube is stressed even, not fragile everywhere simultaneously.The parameter of reinforcing bar is as follows: spiral stirrup is the first class hand-drawn wire carbon steel wire that diameter is not less than 5mm, and the diameter of erection hoop reinforcement is 10mm.When pressure bearing pile was 4 Φ 10, the length of anchor rib was 350mm, and when the tension stake was 4 Φ 12, its length was 450mm.
As shown in Figure 2, the shape of the pretensioning prestressed concrete corner cut stake of the present invention's 300 * 300 models and a upper embodiment are basic identical.Its arrangement of reinforcement scheme is: presstressed reinforcing steel 22 is 8, and reinforcement bar arrangement is that 2 presstressed reinforcing steels are set on each arc corner cut.Anchor rib 23 is 4, arranges one on every limit.When the length of side of described pile body during less than 300mm, its reinforcement bar arrangement all is arranged on the arc corner cut, be arranged on this place presstressed reinforcing steel is on same circle substantially and the pile tube thickness at each presstressed reinforcing steel place basically identical, thereby make stressed evenly, mechanical property is better.
In corner cut stake illustrated in figures 1 and 2,2 presstressed reinforcing steels 22 of arc incisal angle edge are 10 ~ 45 ° with the angle α of the described pile tube line of centres.When the corner cut stake is hollow pile, the thickness of concrete pile body 1 is 70 ~ 100mm, and the incisal angle edge length of side is 25 ~ 70mm.
As shown in Figure 3, as can be known, this corner cut stake also comprises end plate 3 and the pile protection hoop 4 that is arranged at pile tube one end from the longitdinal cross-section diagram.Spiral stirrup is divided into encrypted area L1 and non-encrypted area L2 in the vertical, encrypted area L1 is positioned at the two ends of pile tube, and length is 3 ~ 6 times of the pile tube length of side, and for example this section length is 2000mm in embodiment 1, the pitch of encrypted area is not more than 50mm, and the pitch of non-encrypted area is not more than 80mm.Need to prove, erection hoop reinforcement not necessarily can be made above-mentioned shape with reinforcing cage by the matching relationship of other reinforcing bars.
Claims (10)
1. pretensioning prestressed concrete corner cut stake, comprise the concrete pile body (1) with a plurality of corner cuts and be positioned at the inner reinforcing cage (2) of described concrete pile body (1), it is characterized in that, described reinforcing cage (2) comprises spiral stirrup (21), presstressed reinforcing steel (22) and anchor rib (23), the cross section of described reinforcing cage (2) is the polygon with corner cut (24), and described corner cut (24) is arc.
2. pretensioning prestressed concrete corner cut as claimed in claim 1 stake is characterized in that, also comprises erection hoop reinforcement (25), and described spiral stirrup (21) is positioned at the outside of described erection hoop reinforcement (21).
3. pretensioning prestressed concrete corner cut as claimed in claim 2 stake is characterized in that, the polygon of described erection hoop reinforcement (25) for having corner cut, and described corner cut is arc.
4. pretensioning prestressed concrete corner cut as claimed in claim 1 or 2 stake is characterized in that, described concrete pile body (1) has four long limits and four incisal angle edges, the quadrangle of described reinforcing cage (2) for having four arc corner cuts.
5. pretensioning prestressed concrete corner cut as claimed in claim 4 stake is characterized in that, described presstressed reinforcing steel (22) is 12, and 1 presstressed reinforcing steel (22) is set on every arc incisal angle edge, and 2 presstressed reinforcing steels (22) evenly are set on every long limit.
6. pretensioning prestressed concrete corner cut as claimed in claim 5 stake, it is characterized in that, described anchor rib (23) is 6, respectively be provided with one on one group of relative limit, and be positioned between described 2 presstressed reinforcing steels (22), another is organized on relative limit and respectively is provided with two, and is positioned at outside described 2 presstressed reinforcing steels (22).
7. pretensioning prestressed concrete corner cut as claimed in claim 4 stake is characterized in that, during less than 300mm, described presstressed reinforcing steel (22) is 8, and 2 presstressed reinforcing steels (22) are set on each arc corner cut when the length of side of described pile body.
8. pretensioning prestressed concrete corner cut as claimed in claim 7 stake is characterized in that, described anchor rib (23) is 4, arranges one on every limit.
9. pretensioning prestressed concrete corner cut stake as claimed in claim 7 or 8, is characterized in that, 2 presstressed reinforcing steels (22) of arc incisal angle edge are 10 ~ 45 ° with the angle (α) of the described pile tube line of centres.
10. pretensioning prestressed concrete corner cut as claimed in claim 4 stake is characterized in that, described corner cut stake is hollow pile, and the thickness of described concrete pile body (1) is 70 ~ 100mm, and the described incisal angle edge length of side is 25 ~ 70mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310039121.2A CN103114582B (en) | 2013-02-01 | 2013-02-01 | Pre-tensioning method prestressed concrete chamfered pillar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310039121.2A CN103114582B (en) | 2013-02-01 | 2013-02-01 | Pre-tensioning method prestressed concrete chamfered pillar |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410030369.7A Division CN103774647B (en) | 2013-02-01 | 2013-02-01 | The hollow corner cut square pile of pretensioning prestressed concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103114582A true CN103114582A (en) | 2013-05-22 |
| CN103114582B CN103114582B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310039121.2A Active CN103114582B (en) | 2013-02-01 | 2013-02-01 | Pre-tensioning method prestressed concrete chamfered pillar |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201627197U (en) * | 2010-04-18 | 2010-11-10 | 张秉南 | Novel pretensioning prestressed concrete square pile |
| CN201943070U (en) * | 2011-01-28 | 2011-08-24 | 宿迁市固丰管桩有限公司 | Toughened type prestress centrifugal concrete pile |
| CN202039351U (en) * | 2011-05-06 | 2011-11-16 | 上海中技桩业股份有限公司 | Prestressed concrete hollow square pile for foundation |
| CN202247861U (en) * | 2011-08-12 | 2012-05-30 | 宿迁市固丰管桩有限公司 | Anti-seismic prefabricated concrete solid square pile |
| CN202466578U (en) * | 2012-02-28 | 2012-10-03 | 上海中技桩业股份有限公司 | Durable prefabricated hollow square pile |
| CN102733373A (en) * | 2012-06-18 | 2012-10-17 | 上海中技桩业股份有限公司 | Post grouting concrete hollow circular corner triangular pile |
-
2013
- 2013-02-01 CN CN201310039121.2A patent/CN103114582B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201627197U (en) * | 2010-04-18 | 2010-11-10 | 张秉南 | Novel pretensioning prestressed concrete square pile |
| CN201943070U (en) * | 2011-01-28 | 2011-08-24 | 宿迁市固丰管桩有限公司 | Toughened type prestress centrifugal concrete pile |
| CN202039351U (en) * | 2011-05-06 | 2011-11-16 | 上海中技桩业股份有限公司 | Prestressed concrete hollow square pile for foundation |
| CN202247861U (en) * | 2011-08-12 | 2012-05-30 | 宿迁市固丰管桩有限公司 | Anti-seismic prefabricated concrete solid square pile |
| CN202466578U (en) * | 2012-02-28 | 2012-10-03 | 上海中技桩业股份有限公司 | Durable prefabricated hollow square pile |
| CN102733373A (en) * | 2012-06-18 | 2012-10-17 | 上海中技桩业股份有限公司 | Post grouting concrete hollow circular corner triangular pile |
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| CN103114582B (en) | 2015-06-03 |
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