CN201598634U - High-strength concrete pipe pile - Google Patents
High-strength concrete pipe pile Download PDFInfo
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- CN201598634U CN201598634U CN2010201023309U CN201020102330U CN201598634U CN 201598634 U CN201598634 U CN 201598634U CN 2010201023309 U CN2010201023309 U CN 2010201023309U CN 201020102330 U CN201020102330 U CN 201020102330U CN 201598634 U CN201598634 U CN 201598634U
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- prestressed
- concrete pile
- reinforcement
- pile body
- concrete
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Abstract
The utility model discloses a high-strength concrete pipe pile. The pipe pile comprises a round pipe-shaped concrete pile body and an end plate arranged at the end part of the concrete pile body; a reinforcement cage built in the concrete pile body comprises a plurality of prestressed steel bars distributed along the length direction of the concrete pile body and spiral hooping spirally wound on the prestressed steel bars; the prestressed steel bars are arranged around the circumference direction of the concrete pile body; and the reinforcement cage also comprises a plurality of nonprestressed deformed steel bars parallel to the prestressed steel bars. Compared with the prior art, the pipe pile has the following advantages: the nonprestressed deformed steel bars are arranged for enhancing the bending-resistant performance of the concrete pile body and ameliorating the problem that the traditional pre-tensioned prestressed concrete pipe pile is easy to break.
Description
Technical field
The utility model relates to a kind of concrete tubular pile, belongs to pile foundation Foundation Design technical field in the building.
Background technology
Highrise building, bridge, harbour need pile foundation to support its superstructure.The Pretensioned spun concrete piles of making by national standard 13476 is extensive use of in Foundation Design.The main purpose of configuration high-strength prestress reinforcing bar is to give concrete by the tensile load that the high-strength prestress reinforcing bar is applied its tensile strength about 70% when pile tube is made in this kind tubular pile body, makes the tubular pile body concrete produce compressive stress.The tensile stress of using strike or plunging to produce when this compressive stress can prevent pile tube because of construction causes pile body the crack to occur.But the pertinent literature application reference number is open " prestressed concrete pipe pile with pretensioning type strands " (publication number: CN1687534A) of Chinese invention patent application of 200510050112.1.Generally comprise annular tube shaped concrete pile body and the end plate of being located at the pile body end on the Pretensioned spun concrete piles structure, pile body is built-in with cage of reinforcement, this cage of reinforcement comprises that a plurality of prestressed reinforcements arranged along the pile body length direction and helical form are wound in the spiral bar on the prestressed reinforcement, and wherein a plurality of prestressed reinforcements circumferentially are provided with around pile body.
But because earthquake, typhoon and other uncertain factors can cause that top, building pile basis produces higher moment of flexure and shearing, and the top of road and bridge or railway bridge bottom pile foundation also can produce higher moment of flexure and shearing because of the dynamic load of transport vehicle two.When prestressed concrete pipe pile is used for above-mentioned engineering, tend to meet the demands and to adopt because of its bending resistance and shear behavior.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of strong concrete pile tube with good bending resistance and shear behavior at the above-mentioned state of the art.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of strong concrete pile tube, comprise annular tube shaped concrete pile body and be located at the end plate of concrete pile body end, aforesaid concrete pile body is built-in with cage of reinforcement, this cage of reinforcement comprises that a plurality of prestressed reinforcements arranged along concrete pile height degree direction and helical form are wound in the spiral bar on the prestressed reinforcement, a plurality of prestressed reinforcements circumferentially are provided with around described concrete pile body, it is characterized in that described cage of reinforcement also comprises a plurality of non-prestressed indented bars that is parallel to described prestressed reinforcement.
As preferably, described a plurality of non-prestressed indented barss circumferentially are provided with a plurality of prestressed reinforcement transpostion intervals around described concrete pile body.
Described non-prestressed indented bars is positioned at the upper end of cage of reinforcement and accepts with the nonprestressed reinforcement of bottom.Can be used as the stake of topmost in the concrete pipe pile foundation engineering, common Pretensioned spun concrete piles can be used in its underpart, to reduce cost.
Further, described end plate is arranged at concrete pile body end by a pile protection hoop.
As preferably, the diameter of each unit of described spiral bar is more than the 5.5mm, and the adjacent cells spacing is below the 80mm.
Described non-prestressed indented bars diameter is greater than the diameter of prestressed reinforcement.Although on the basis of existing Pretensioned spun concrete piles, might increase its anti-bending strength by the quantity that increases the prestressed high-strength reinforcing bar, but in Pretensioned spun concrete piles manufacturing process, because the control stress for prestressing of prestressed high-strength reinforcing bar is generally 70% of reinforcing bar tensile strength, make that the bending resistance safety stock of pile tube is very low, the brittle failure phenomenon takes place easily.The intensity that adds the prestressed high-strength reinforcing bar is too high, and when pile tube is being subjected to when curved, after the tensile stress of prestressed high-strength reinforcing bar surpassed control stress for prestressing, reinforcing bar and concrete adhesive strength also can go wrong, and cause the destruction of pile body.
Because the diameter of non-prestressed indented bars is greater than the prestressed high-strength reinforcing bar, itself and concrete adhesive strength will be far above the prestressed high-strength reinforcing bars.When external force acts on pile tube and pile body is subjected to when curved, because of non-prestressed indented bars and concrete adhesive strength higher, thereby can bear very big moment of flexure, and can avoid occurring having now the brittle failure phenomenon of Pretensioned spun concrete piles.
The concrete strength of pile of the Pretensioned spun concrete piles of making by national standard 13476 is 60～80MPa, improves concrete strength to 80～150MPa, also can increase substantially the bending resistance and the shear resistance of pile tube.
Compared with prior art, advantage of the present utility model is: dispose the anti-bending strength that non-prestressed indented bars can increase the concrete pile body, and can improve the easy brittle failure problem of existing Pretensioned spun concrete piles.
Description of drawings
Fig. 1 is the example structure schematic diagram.
Fig. 2 is the embodiment viewgraph of cross-section.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment: as depicted in figs. 1 and 2, concrete pipe pilework in the present embodiment specifically comprises annular tube shaped concrete pile body 1 and is arranged at the end plate 3 of concrete pile body end by a pile protection hoop 2, concrete pile body 1 is built-in with cage of reinforcement 7, this cage of reinforcement 7 comprises that a plurality of prestressed reinforcements 4 arranged along concrete pile height degree direction and non-prestressed indented bars 5 and helical form are wound in the spiral bar 6 on prestressed reinforcement 4 and the non-prestressed indented bars 5, a plurality of prestressed reinforcements 4 circumferentially are provided with around concrete pile body 1, and non-prestressed indented bars 5 diameters are greater than the diameter of prestressed reinforcement 4.A plurality of non-prestressed indented barss 5 are around the 1 circumferential and a plurality of prestressed reinforcement 4 transpostion interval settings of concrete pile body.
Non-prestressed indented bars 5 is positioned at the upper end of cage of reinforcement 1 and accepts with the nonprestressed reinforcement 5 of bottom, and perhaps non-prestressed indented bars 5 and prestressed reinforcement 4 are isometric to flush with concrete pile body 1 length.
Application Example 1: to the A level Pretensioned spun concrete piles of the diameter 600mm that makes by national standard 13476,12 non-prestressed indented barss that diameter is 16mm of configuration in pile body, the diameter of the spiral reinforcement that is disposed simultaneously should be at 6mm, and the spiral reinforcement spacing of full pile body is 60mm.Concrete strength of pile is pressed C80 (80MPa) preparation.Find that by bending resistance and shear test the maximal destruction bending resistance moment of flexure of this pile tube is 566kNm, and concrete strength of pile is 278kNm by the maximal destruction bending resistance moment of flexure of the A level Pretensioned spun concrete piles of the diameter 600mm of C80 preparation.In addition, it is 528kN that the shearing resistance of the non-prestressed indented bars pile tube that to dispose 12 diameters be 16mm equals at 1 o'clock at ratio of shear span to effective depth of section, and concrete strength of pile is 357kN by the shearing resistance of the A level Pretensioned spun concrete piles of the diameter 600mm of C80 preparation.
Application Example 2: to the A level Pretensioned spun concrete piles of the diameter 600mm that makes by national standard 13476,12 non-prestressed indented barss that diameter is 16mm of configuration in pile body, the diameter of the spiral reinforcement that is disposed simultaneously should be at 6mm, and the spiral reinforcement spacing of full pile body is 60mm.Simultaneously, concrete strength of pile is pressed the C110 preparation.Find that by bending resistance and shear test the maximal destruction bending resistance moment of flexure of this pile tube is 642kNm, the pile tube of making by present technique than embodiment 1 will exceed about 15%.And concrete strength of pile is 289kNm by the maximal destruction bending resistance moment of flexure of the A level Pretensioned spun concrete piles of the diameter 600mm of C110 (110MPa) preparation.It is high by 5% only to press the pile tube of 80MPa preparation than embodiment 1.
Claims (6)
1. strong concrete pile tube, comprise annular tube shaped concrete pile body and be located at the end plate of concrete pile body end, aforesaid concrete pile body is built-in with cage of reinforcement, this cage of reinforcement comprises that a plurality of prestressed reinforcements arranged along concrete pile height degree direction and helical form are wound in the spiral bar on the prestressed reinforcement, a plurality of prestressed reinforcements circumferentially are provided with around described concrete pile body, it is characterized in that described cage of reinforcement also comprises a plurality of non-prestressed indented bars that is parallel to described prestressed reinforcement.
2. strong concrete pile tube according to claim 1 is characterized in that the circumferential and a plurality of prestressed reinforcement transpostion interval setting around described concrete pile body of described a plurality of non-prestressed indented bars.
3. strong concrete pile tube according to claim 2 is characterized in that described non-prestressed indented bars is positioned at the upper end of cage of reinforcement and accepts with the nonprestressed reinforcement of bottom.
4. strong concrete pile tube according to claim 1 is characterized in that described end plate is arranged at concrete pile body end by a pile protection hoop.
5. according to the described strong concrete pile tube of arbitrary claim in the claim 1～4, the diameter that it is characterized in that each unit of described spiral bar is more than the 5.5mm, and the adjacent cells spacing is below the 80mm.
6. according to the described strong concrete pile tube of arbitrary claim in the claim 1～4, it is characterized in that the diameter of described non-prestressed indented bars diameter greater than prestressed reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201023309U CN201598634U (en) | 2010-01-21 | 2010-01-21 | High-strength concrete pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201023309U CN201598634U (en) | 2010-01-21 | 2010-01-21 | High-strength concrete pipe pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201598634U true CN201598634U (en) | 2010-10-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201023309U Expired - Lifetime CN201598634U (en) | 2010-01-21 | 2010-01-21 | High-strength concrete pipe pile |
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| CN (1) | CN201598634U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121246A (en) * | 2011-01-28 | 2011-07-13 | 宿迁市固丰管桩有限公司 | Toughening prestressed centrifugal concrete pile |
| CN103103978A (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 upper segment and manufacturing method thereof |
| CN103306282A (en) * | 2013-06-13 | 2013-09-18 | 中铁隧道集团有限公司 | Prestressed concrete pile configured with reinforced bars in sections and construction method |
-
2010
- 2010-01-21 CN CN2010201023309U patent/CN201598634U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121246A (en) * | 2011-01-28 | 2011-07-13 | 宿迁市固丰管桩有限公司 | Toughening prestressed centrifugal concrete pile |
| CN103103978A (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 upper segment and manufacturing method thereof |
| CN103306282A (en) * | 2013-06-13 | 2013-09-18 | 中铁隧道集团有限公司 | Prestressed concrete pile configured with reinforced bars in sections and construction method |
| CN103306282B (en) * | 2013-06-13 | 2015-10-14 | 中铁隧道集团有限公司 | The prestressed concrete pile of subsection reinforcement and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Zhongchun New Material Co.,Ltd. Assignor: Ningbo Zhedong Building Material Group Co., Ltd. Contract record no.: 2012330000290 Denomination of utility model: Production method of pretensioned prestressing strong concrete pipe piles Granted publication date: 20101006 License type: Exclusive License Record date: 20120522 |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHONGCHUN GAOKE PILE INDUSTRY CO., LTD. Free format text: FORMER OWNER: NINGBO ZDOON BUILDING MATERIAL GROUP CO., LTD. Effective date: 20131024 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315101 NINGBO, ZHEJIANG PROVINCE TO: 315145 NINGBO, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131024 Address after: 315145 Zhejiang Ningbo Yinzhou District Binhai Pioneering Center sailing South Road Patentee after: Zhongchun Gaoke Pile Industry Co., Ltd. Address before: 315101 Zhejiang city of Ningbo province Yinzhou District Qiuai Sheng Mo Road No. 42 Patentee before: Ningbo Zhedong Building Material Group Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180920 Address after: 315100 No. 166 Linjiang Road, Yinzhou Economic Development Zone, Ningbo, Zhejiang Patentee after: Ningbo Zhong Chun hi tech Limited by Share Ltd Address before: 315145 Yinzhou District Binhai Pioneering Center, Ningbo City, Zhejiang Province, South China road. Patentee before: Zhongchun Gaoke Pile Industry Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |