CN104018491A - Enhanced prefabricated reinforced concrete square pile - Google Patents
Enhanced prefabricated reinforced concrete square pile Download PDFInfo
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- CN104018491A CN104018491A CN201410239020.4A CN201410239020A CN104018491A CN 104018491 A CN104018491 A CN 104018491A CN 201410239020 A CN201410239020 A CN 201410239020A CN 104018491 A CN104018491 A CN 104018491A
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Abstract
The invention provides an enhanced prefabricated reinforced concrete square pile which comprises a pile body with a square cross section, main reinforcing bars, hooping bars, a pile cap and concrete. The pile cap is composed of end boards and hems. Longitudinal anchoring bars are arranged inside the end boards. The hooping bars are spiral hooping bars welded to the outer edges of the main reinforcing bars. A cylindrical reinforcement cage body with a square cross section is formed by connecting the main reinforcing bars with the spiral hooping bars. The screw pitch, of a pile tip zone where the anchoring bars are located, of the spiral hooping bars is smaller than that of a middle pile body zone where the spiral hooping bars are located, so that the mechanical property of the pile tip zone is reinforced. At least one pair of cross-shaped pulling hoops are arranged between the main reinforcing bars and preferably, the cross-shaped pulling hoops are arranged between the main reinforcing bars located in the middle positions of the four cylindrical faces of a reinforcement cage and/or arranged between the main reinforcing bars located on the diagonal edges of the reinforcement cage. The interval of the longitudinally-adjacent two pairs of cross-shaped pulling hoops is smaller than the screw pitch of the spiral hooping bars where the cross-shaped pulling hoops are located. The enhanced prefabricated reinforced concrete square pile has the advantages that pile tip beat resistant force and vertical bearing capacity are high and mechanized efficient production is facilitated.
Description
Technical field
The present invention relates to a kind of building unit, especially relate to a kind of Prefabricated Reinforced Concrete Square Pile, belong to building material field.
Background technology
China's precast concrete pile is fast-developing more than 20 year, from national precast concrete pile, produces, and within 2011, preformed pile output has reached 2.8 hundred million meters; Global economy depression in 2012, China's concrete precast pile is produced and has been experienced the recent two decades underproduction first, and output is 2.6 hundred million meters; The above concrete precast pile cumulative production of the scale first half of the year in 2013 increases by 11.1% on a year-on-year basis.Above-mentioned data show that precast concrete pile occupies very important position in China's concrete and cement products industry, and the market demand is very large.
Prefabricated Reinforced Concrete Square Pile, as a kind of type wherein, has himself advantage.Compare with prestressed concrete pipe pile, this solid design of square pile, has increased second moment of area, contributes to improve the tensile capacity of square pile; Secondly in the design of the structure of square pile, adopt high amount of reinforcement, contribute to equally to improve the stress performance of square pile.As compared with PHC-400 (95) A-C80, in Ф 400mm, connect square and approach 300 * 300 mm, circumscribed square is 400 * 400 mm, when Crack Control is 0.2 mm, press the maximum stretching resistance of pile body that load effect standard combination is calculated, Driven Piles, cross section 300 * 300, length are no more than the C stake (C50) of 12 m, pile body stretching resistance 245 KN; Driven Piles, cross section 400 * 400, length are no more than the C stake (C50) of 12m, pile body stretching resistance 385KN, and with approaching of PHC-400 (95) A-C80, main muscle is the reinforcing bar of 8 Ф 18, and the main muscle of PHC-400 (95) A-C80 is 7 Ф 9.0.
In atlas 04G361 < < Prefabricated Reinforced Concrete Square Pile > >, stirrup must adopt manual colligation to be connected with main muscle, not only handwork amount is large, production efficiency is low, can not meet modern factories production requirement; And stirrup position dimension error is large, cause pile body mechanical property to reduce and durability deficiency, particularly, low, the resistance to poor performance that impacts of its end place vertical bearing capacity.
Summary of the invention
the technical problem solving:for overcoming the defect of prior art, provide a kind of stirrup position dimension error little, be suitable for roll welding operation, production efficiency is high, and pile body mechanical property is strong, vertical bearing capacity is high, the resistance to Prefabricated Reinforced Concrete Square Pile impacting.
technical scheme:enhancement mode Prefabricated Reinforced Concrete Square Pile of the present invention, comprise that cross section is square pile body main body, main muscle, stirrup, pile cover and concrete, main muscle longitudinally arranges along pile body, and described pile cover is comprised of end plate and shirt rim, in end plate inboard, is provided with anchor rib longitudinally; Described stirrup is the spirality stirrup that is welded on main muscle outer rim, and it is foursquare column reinforcing cage main body that main muscle and spirality stirrup connect into cross section.
First, the anchor rib that square pile of the present invention is set up at stake petiolarea can improve the intensity of a petiolarea.Secondly, the helical structure of spirality stirrup, can realize in roll welding mode main muscle and stirrup are connected into square reinforcing cage main body, greatly enhances productivity.Meanwhile, the spirality stirrup that the present invention makes by roll welding, can guarantee pitch precision and the mechanical property of stirrup, strengthens the horizontal restrain power of stake petiolarea, improves the vertical carrying of pile body.
Described spirality stirrup is less than it in the pitch in the pile body district at middle part, with the mechanical property of consolidating pile petiolarea in the pitch of the stake petiolarea at anchor rib place.
Described main muscle is at least 8, and the multiple with 4 increases progressively, and is arranged on 4 seamed edges of square reinforcing cage and is distributed on 4 cylinders.
Especially, the unstability of the parallelogram square for overcoming, rhombus draws hoop, the inside restraint forces that strengthens pile body opposite, diagonal angle, further to strengthen the horizontal restrain power of a petiolarea and the vertical bearing capacity of pile body, the present invention is at least provided with a pair of cross and draws hoop between described main muscle; Described a pair of cross draws hoop, is in the square cross-section of described reinforcing cage, is connecting and is being positioned at foursquare two the cross one another hoops that draw that connect the main muscle of foursquare two pairs of diagonal positions in this cross section.---in foursquare one of this described cross section, connect square, refer to that any one four drift angle in this cross section square lay respectively at the square on the foursquare four edges in this cross section.
Preferably, described cross draw hoop be arranged between the main muscle in the centre position in four cylinders of reinforcing cage, and or be arranged between the main muscle on the seamed edge in reinforcing cage diagonal angle.Aforesaid two kinds of crosses draw hoop right, can be referred to as La Guhe diagonal angle, opposite and draw hoop.
Described cross draws hoop longitudinally to distribute along pile body, and the stake petiolarea that distributed areas are not less than anchor rib place, to strengthen especially the horizontal restrain power of a petiolarea, improves the anti-fight performance of stake petiolarea.
For the effect that further strengthening cross draws hoop, described adjacent two pairs of spacing that cross draws hoop longitudinally, be less than the pitch of the spirality stirrup at its place, place.
beneficial effect:square pile of the present invention compared with prior art, there are two large advantages: anti-fight power and the vertical bearing capacity of (1) stake end increase, the present invention is when stake end is set up anchor rib, the alternative square stirrup of the prior art of compound reinforcement manner and the rhombus that with spirality stirrup and cross, draw hoop to combine again draw hoop, strengthen concrete horizontal restrain effect, can significantly improve anti-fight power and the vertical bearing capacity of stake end.(2) production efficiency improves, and spirality stirrup of the present invention and main muscle can adopt roll welding mode to weld, when improving the dimensional accuracy of reinforcing cage, reduced again handwork amount, be conducive to guarantee product size and quality, enhance productivity, reduce the cost of production of single pile.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of square pile of the present invention.
Fig. 2 is that the opposite cross of square pile of the present invention draws hoop schematic diagram.
Fig. 3 is that the diagonal angle cross of square pile of the present invention draws hoop schematic diagram.
In figure: main muscle 1, spirality stirrup 2, opposite cross draw hoop 31, diagonal angle cross to draw hoop 32, concrete 4, end plate 5, shirt rim 6, anchor rib 7, stake petiolarea L.
Specific embodiments
Below in conjunction with embodiment and Figure of description, the present invention is further described.
Embodiment:
Referring to Fig. 1, the enhancement mode Prefabricated Reinforced Concrete Square Pile of the present embodiment, comprise pile cover, main muscle 1, spirality stirrup 2 and concrete 4, pile body cross section main body is square, pile cover is comprised of end plate 5 and shirt rim 6, in end plate 5 inboards, is welded with anchor rib 7, main muscle 1 along pile body longitudinally through pile body, main muscle 1 outer rim is spirality stirrup 2, and main muscle 1 and spirality stirrup 2 are connected into the reinforcing cage main body of square column type in the mode of roll welding by seam welder.Spirality stirrup 2 is encrypted in the stake petiolarea L at anchor rib 7 places, and its pitch is less than the pitch in pile body district.Main muscle 1 is designed to 8, be separately positioned on 4 seamed edge places of square column type reinforcing cage and the centre position of 4 cylinders, referring to Fig. 2, between the main muscle 1 in the main muscle 1 in the centre position of four cylinders of reinforcing cage and the centre position of opposite cylinder, be provided with cross and draw hoop, cross draws hoop to start along pile body to rear section cloth from stake end, be distributed to outside the stake petiolarea L at anchor rib 7 places, adjacent cross draws the spacing between hoop, be less than the pitch of the spirality stirrup 2 at its place, place, the effect of drawing hoop to strengthen especially cross.
In the present embodiment, anchor rib 7 adopts welding manner to be fixed on the inboard of end plate 5, and in production, anchor rib also can be riveted, or is fixed on end plate with bolt connection mode.
Enhancement mode Prefabricated Reinforced Concrete Square Pile of the present invention, cross section main body is square, 4 corner angle can be respectively right angle or interior arc chord angle or cylindrical arc angle or chamfering or its combination, for example: 4 drift angles are right angle, 4 drift angles and are that chamfering, 4 drift angles are cylindrical arc angle, 4 drift angles are the combination at the combination at the combination at interior arc chord angle, 2 cylindrical arc angles and 2 right angles, 2 chamferings and 2 right angles, 2 interior arc chord angles and 2 right angles and the combination of 2 cylindrical arc angles and 2 chamferings.Can select as required.Fig. 2, Fig. 3 are the structural representation that 4 drift angles are chamfering.
Claims (7)
1. an enhancement mode Prefabricated Reinforced Concrete Square Pile, comprise that cross section is square pile body main body, main muscle, stirrup, pile cover and concrete, main muscle longitudinally arranges along pile body, it is characterized in that described pile cover is comprised of end plate and shirt rim, is provided with anchor rib longitudinally in end plate inboard; Described stirrup is the spirality stirrup that is welded on main muscle outer rim, and it is foursquare column reinforcing cage main body that main muscle and spirality stirrup are connected into cross section.
2. square pile according to claim 1, is characterized in that described spirality stirrup is less than it in the pitch in the pile body district at middle part in the pitch of the stake petiolarea at anchor rib place.
3. square pile according to claim 2, its feature is at least 8 at described main muscle, and the multiple with 4 increases progressively, and is arranged on 4 seamed edges of reinforcing cage and is distributed on 4 cylinders.
4. square pile according to claim 3, is characterized in that between described main muscle, being at least provided with a pair of cross draws hoop; Described a pair of cross draws hoop, is in the square cross-section of described reinforcing cage, is connecting and is being positioned at foursquare two the cross one another hoops that draw that connect the main muscle of foursquare two pairs of diagonal positions in this cross section.
5. square pile according to claim 4, is characterized in that described cross draws hoop to be arranged between the main muscle in the centre position in four cylinders of reinforcing cage, and or be arranged between the main muscle on the seamed edge in reinforcing cage diagonal angle.
6. according to the square pile described in claim 4 or 5, it is characterized in that described cross draws hoop longitudinally to distribute along pile body, distributed areas are not less than the stake petiolarea at anchor rib place.
7. square pile according to claim 6, adjacent two pairs of spacing that cross draws hoop longitudinally described in it is characterized in that, are less than the pitch of the spirality stirrup at its place, place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410239020.4A CN104018491A (en) | 2014-05-30 | 2014-05-30 | Enhanced prefabricated reinforced concrete square pile |
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| CN201410239020.4A CN104018491A (en) | 2014-05-30 | 2014-05-30 | Enhanced prefabricated reinforced concrete square pile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039874A (en) * | 2015-08-13 | 2015-11-11 | 江鹏财 | Concrete pipe pile for building roads and bridges |
| CN105386441A (en) * | 2015-10-19 | 2016-03-09 | 广西大学 | PVC pipe wrapped inner supporting cross prestress recycled concrete tubular pile |
| CN105386442A (en) * | 2015-10-19 | 2016-03-09 | 广西大学 | FRP wrapped prestress recycled concrete tubular pile |
| CN105386437A (en) * | 2015-10-19 | 2016-03-09 | 广西大学 | FRP wrapped recycled concrete composite tubular pile |
| CN105696549A (en) * | 2016-01-28 | 2016-06-22 | 中铁十四局集团第三工程有限公司 | Novel steel reinforcement cage interior supporting structure and application thereof |
| CN105951710A (en) * | 2016-05-05 | 2016-09-21 | 上海大禺预制构件有限公司 | Reinforcement cage structure for manufacturing U-shaped sheet pile |
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| CN103103977A (en) * | 2013-02-07 | 2013-05-15 | 江苏固丰管桩集团有限公司 | Partially-prestressed reinforced concrete solid square pile lower segment and manufacturing method thereof |
| CN203021992U (en) * | 2012-12-31 | 2013-06-26 | 中国建筑西南勘察设计研究院有限公司 | Variable-reinforcement anti-pulling square concrete pile |
| CN203939022U (en) * | 2014-05-30 | 2014-11-12 | 江苏固丰管桩集团有限公司 | Enhancement mode Prefabricated Reinforced Concrete Square Pile |
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2014
- 2014-05-30 CN CN201410239020.4A patent/CN104018491A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2269617A (en) * | 1992-08-12 | 1994-02-16 | Gray Prefabrication Services L | Cage for reinforcing a concrete pile |
| JPH083983A (en) * | 1994-06-09 | 1996-01-09 | Nippon Concrete Ind Co Ltd | Precast concrete product |
| CN1837527A (en) * | 2006-04-06 | 2006-09-27 | 黄昱元 | Profiled angle steel reinforced concrete structure, structure and member combination |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039874A (en) * | 2015-08-13 | 2015-11-11 | 江鹏财 | Concrete pipe pile for building roads and bridges |
| CN105386441A (en) * | 2015-10-19 | 2016-03-09 | 广西大学 | PVC pipe wrapped inner supporting cross prestress recycled concrete tubular pile |
| CN105386442A (en) * | 2015-10-19 | 2016-03-09 | 广西大学 | FRP wrapped prestress recycled concrete tubular pile |
| CN105386437A (en) * | 2015-10-19 | 2016-03-09 | 广西大学 | FRP wrapped recycled concrete composite tubular pile |
| CN105696549A (en) * | 2016-01-28 | 2016-06-22 | 中铁十四局集团第三工程有限公司 | Novel steel reinforcement cage interior supporting structure and application thereof |
| CN105951710A (en) * | 2016-05-05 | 2016-09-21 | 上海大禺预制构件有限公司 | Reinforcement cage structure for manufacturing U-shaped sheet pile |
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Owner name: ZHU YUEQIN Free format text: FORMER OWNER: JIANGSU GUFENG PIPE PILE GROUP CO., LTD. Effective date: 20150413 |
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Free format text: CORRECT: ADDRESS; FROM: 223800 SUQIAN, JIANGSU PROVINCE TO: 213000 CHANGZHOU, JIANGSU PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20150413 Address after: 213000 Jiangsu Province, Changzhou city Wujin District Huang Li Zhen Xi Lu Cun Wei Tang Village No. 25 Applicant after: Zhu Yueqin Address before: 1 No. 223800 Suqian city of Jiangsu province Xuanyuan Sucheng Road Economic Development Zone Applicant before: Jiangsu Gufeng Pipe Group Co., Ltd. |
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Application publication date: 20140903 |