CN103114582B - Pre-tensioning method prestressed concrete chamfered pillar - Google Patents
Pre-tensioning method prestressed concrete chamfered pillar Download PDFInfo
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- CN103114582B CN103114582B CN201310039121.2A CN201310039121A CN103114582B CN 103114582 B CN103114582 B CN 103114582B CN 201310039121 A CN201310039121 A CN 201310039121A CN 103114582 B CN103114582 B CN 103114582B
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- prestressed concrete
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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 poor everywhere to cause pile tube.
Summary of the invention
Goal of the invention: the pretensioning prestressed concrete corner cut stake that the object of this invention is to provide a kind of excellent in mechanical performance.
Technical scheme: pretensioning prestressed concrete corner cut of the present invention stake, comprise the concrete pile body with multiple corner cut and the reinforcing cage being 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, every bar arc incisal angle edge arranges 1 presstressed reinforcing steel, the long limit of every bar is evenly arranged 2 presstressed reinforcing steels.Described anchor rib is 6, one group of relative limit is respectively provided with one, and between described 2 presstressed reinforcing steels, another is organized on relative limit and is respectively provided with two, and be positioned at outside described 2 presstressed reinforcing steels.
When the length of side of described pile body is less than 300mm, described presstressed reinforcing steel is 8, each arc corner cut is arranged 2 presstressed reinforcing steels.Described anchor rib is 4, and every bar limit arranges one.
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, makes it have excellent mechanical property.
Accompanying drawing explanation
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.
detailed description of the invention:
As shown in Figure 1, the square corner cut stake of the present invention 400 × 400mm model comprises the reinforcing cage 2 having 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, outstanding feature is the cross section of reinforcing cage 2 is the polygon with corner cut 24, and corner cut 24 is arc.Corner cut is the benefit of arc: make the concrete thickness being positioned at both sides inside and outside the presstressed reinforcing steel on this incisal angle edge substantially identical, can also reduce the stress of long limit and minor face junction.Particularly, erection hoop reinforcement 21 is for having the polygon of corner cut 24, and described corner cut 24 is the outside that arc spiral stirrup 21 is positioned at erection hoop reinforcement 21, thus forms the basic structure of reinforcing cage.
From outside or cross section, this concrete pile body 1 has four long limits and four incisal angle edges, and reinforcing cage 2 is for having the quadrangle of four arc corner cuts.Arrangement of reinforcement scheme is presstressed reinforcing steel 12, every bar arc incisal angle edge arranges 1 presstressed reinforcing steel 22, the long limit of every bar is evenly arranged 2 presstressed reinforcing steels.Anchor rib 23 is 6, one group of relative limit is respectively provided with one, and between above-mentioned 2 presstressed reinforcing steels 22, another is organized on relative limit and is respectively provided with two, and be positioned at outside 2 presstressed reinforcing steels 22.Reduce the consumption of reinforcing bar while this design can make pile tube intensity conform with the regulations, save material, pile tube uniform force everywhere, not fragile 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 is 4 Φ 10, the length of anchor rib is 350mm, and when tension stake is 4 Φ 12, its length is 450mm.
As shown in Figure 2, the shape of the pretensioning prestressed concrete corner cut stake of the present invention 300 × 300 model is substantially identical with a upper embodiment.Its arrangement of reinforcement scheme is: presstressed reinforcing steel 22 is 8, and reinforcement bar arrangement is that each arc corner cut arranges 2 presstressed reinforcing steels.Anchor rib 23 is 4, and every bar limit arranges one.When the length of side of described pile body is less than 300mm, its reinforcement bar arrangement is all arranged in arc corner cut, being arranged on this place can make presstressed reinforcing steel substantially be on same circle and the pile tube thickness at each presstressed reinforcing steel place is basically identical, thus makes uniform force, and mechanical property is better.
In the corner cut stake shown in Fig. 1 and Fig. 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 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, known from longitdinal cross-section diagram, this corner cut stake also comprises the end plate 3 and pile protection hoop 4 that are arranged at pile tube one end.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 such as 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.It should be noted that, reinforcing cage not necessarily, can be made above-mentioned shape by the matching relationship of other reinforcing bars by erection hoop reinforcement.
Claims (10)
1. pretensioning prestressed concrete corner cut stake, described corner cut stake is hollow pile, comprise the concrete pile body (1) with multiple corner cut and the reinforcing cage (2) being positioned at described concrete pile body (1) inside, 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 for having the polygon of corner cut (24), and described corner cut (24) is arc.
2. pretensioning prestressed concrete corner cut stake as claimed in claim 1, it is characterized in that, also comprise erection hoop reinforcement (25), described spiral stirrup (21) is positioned at the outside of described erection hoop reinforcement (21).
3. pretensioning prestressed concrete corner cut stake as claimed in claim 2, it is characterized in that, described erection hoop reinforcement (25) is for having the polygon of corner cut, and described corner cut is arc.
4. pretensioning prestressed concrete corner cut stake as claimed in claim 1 or 2, it is characterized in that, described concrete pile body (1) has four long limits and four incisal angle edges, and described reinforcing cage (2) is for having the quadrangle of four arc corner cuts.
5. pretensioning prestressed concrete corner cut stake as claimed in claim 4, it is characterized in that, described presstressed reinforcing steel (22) is 12, every bar arc incisal angle edge is arranged 1 presstressed reinforcing steel (22), the long limit of every bar is evenly arranged 2 presstressed reinforcing steels (22).
6. pretensioning prestressed concrete corner cut stake as claimed in claim 5, it is characterized in that, described anchor rib (23) is 6, one group of relative limit is respectively provided with one, and be positioned between described 2 presstressed reinforcing steels (22), another is organized on relative limit and is respectively provided with two, and is positioned at outside described 2 presstressed reinforcing steels (22).
7. pretensioning prestressed concrete corner cut stake as claimed in claim 4, it is characterized in that, when the length of side of described pile body is less than 300mm, described presstressed reinforcing steel (22) is 8, each arc corner cut is arranged 2 presstressed reinforcing steels (22).
8. pretensioning prestressed concrete corner cut stake as claimed in claim 7, it is characterized in that, described anchor rib (23) is 4, and every bar limit arranges one.
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 and the angle (α) of the described pile tube line of centres are 10 ~ 45 °.
10. pretensioning prestressed concrete corner cut stake as claimed in claim 4, it is characterized in that, 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 CN103114582A (en) | 2013-05-22 |
| CN103114582B true CN103114582B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310039121.2A Active CN103114582B (en) | 2013-02-01 | 2013-02-01 | Pre-tensioning method prestressed concrete chamfered pillar |
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Family Cites Families (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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| CN103114582A (en) | 2013-05-22 |
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