CN105113504B - A kind of mixed type pre-stressed steel pipe concrete stake - Google Patents
A kind of mixed type pre-stressed steel pipe concrete stake Download PDFInfo
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- CN105113504B CN105113504B CN201510364600.0A CN201510364600A CN105113504B CN 105113504 B CN105113504 B CN 105113504B CN 201510364600 A CN201510364600 A CN 201510364600A CN 105113504 B CN105113504 B CN 105113504B
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Abstract
The present invention relates to a kind of mixed type pre-stressed steel pipe concrete stake, including concrete pile body, the steel reinforcement cage being built in concrete-pile body, and the external steel pipe of part concrete-pile is coated on, its innovative point is：Inwall has an internal groove for extending to mouth of pipe end face at the mouth of pipe of the steel pipe.Or the steel pipe is provided with transition conduit in the axial joining place with concrete pile body, one end mouth of pipe and the steel-pipe welding of the transition conduit are fixed, and other end internal wall of pipe orifice has an internal groove for extending to mouth of pipe end face.The advantage of the invention is that：At the mouth of pipe of steel pipe or increased transition conduit internal wall of pipe orifice sets an internal groove for extending to mouth of pipe end face, the internal groove sets steel pipe or transition conduit mouth of pipe end surface thickness at this to substantially reduce, steel pipe or transition conduit and contact surface of the concrete pile body in axial direction are reduced, weakens the formation of crackle.
Description
Technical field
The present invention relates to a kind of pile tube, more particularly to a kind of mixed type pre-stressed steel pipe concrete stake.
Background technology
With the development of concrete technology, the technology of concrete tubular pile also reaches its maturity, except applied to industry, civil buildings
Outside, it is also widely used for each field such as bridge, harbour, railway or hydraulic engineering.
Prestressed high-strength concrete pile (PHC pile tubes) uses pre-tensioned prestressing centrifugal molding process, and it is due to list
Pile bearing capacity is high, is used widely the advantages of pile sinking reliable in quality, but manufacturing cost is higher.New Thin-walled steel tube centrifugal mixes
Native pile tube is coagulated, abbreviation TSC stakes, its profile is similar to conventional PHC stakes, but inherent construction is different.The shell of TSC stakes is several millimeters
Thick thin-wall steel tube, internal layer is concrete, has dowel and cold-drawn low-carbon spiral reinforcement in the range of the 1m of stake two, dowel is welded on method
On blue disk, ring flange is welded on steel pipe again, notes people's concrete in steel pipe afterwards, and steel pipe revolves at a high speed with concrete in centrifuge
Mesh together under turning, TSC stakes are formed after steam curing.This novel tubular pile has that bending resistance effect is good, pile quality is excellent, material
Expect the features such as cost is low, but bearing capacity of single pile, quality are not so good as PHC pile tubes.
There is a kind of steel reinforced concrete stake at present, shown in its Fig. 1, mainly include concrete pile body 1, be built in concrete pile body 1
Interior steel reinforcement cage 3, local outside concrete pile body 1 or elongated cladding thin-wall steel tube 2, the structure pass through in high strength concrete hollow stake
The deformed bar cage 3 of the elongated preparation of configuration forms PHC pile tubes in body 1, can be correspondingly improved its bearing capacity of single pile；Concrete
The hollow outer cladding thin-wall steel tube 2 of pile body 1, has that anti-hammering ability is strong, bending resistance effect is good, the fireballing advantage of pile sinking, with reference to normal
The advantages of advising TSC pile tubes and PHC pile tubes, improve the use range of pile tube.
But there is also it is certain the defects of：In the fabrication process, due to the coefficient of expansion of steel pipe and the coefficient of expansion of concrete
It is different, the joining place in steel pipe 2 and the axial direction of concrete pile body 1, it can crack, the crackle is even through the footpath of whole pile body
To face, the quality standard of product is not met, qualification rate is low.
The content of the invention
It is not easy to produce in steel pipe and concrete pile body axial direction joining place the technical problem to be solved in the present invention is to provide one kind
The mixed type pre-stressed steel pipe concrete stake of crackle.
In order to solve the above technical problems, the technical scheme is that：A kind of mixed type pre-stressed steel pipe concrete stake, bag
Concrete pile body is included, the steel reinforcement cage being built in concrete-pile body, and the external steel pipe of part concrete-pile is coated on, it is created
New point is：Inwall has an internal groove for extending to mouth of pipe end face at the mouth of pipe of the steel pipe.
Preferably, length of the internal groove in steel pipe axial direction is 60 ~ 120mm.
Preferably, flaring structure is used at the mouth of pipe of the steel pipe.
Preferably, diameter is more than 4 ~ 8mm of diameter before enlarging after enlarging at the steel pipe nozzle.
A kind of mixed type pre-stressed steel pipe concrete stake, including concrete pile body are also provided, are built in concrete-pile body
Steel reinforcement cage, and be coated on the external steel pipe of part concrete-pile, its innovative point is：The steel pipe with concrete pile body
Axial joining place be provided with transition conduit, one end mouth of pipe and the steel-pipe welding of the transition conduit are fixed, and other end internal wall of pipe orifice has
One extends to the internal groove of mouth of pipe end face.
Preferably, length of the internal groove in transition conduit axial direction is 60 ~ 120mm.
Preferably, the transition conduit uses flaring structure being provided with the mouth of pipe of internal groove.
Preferably, diameter is more than 4 ~ 8mm of diameter before enlarging after enlarging at the transition conduit mouth of pipe.
The advantage of the invention is that：At the mouth of pipe of steel pipe or increased transition conduit internal wall of pipe orifice sets one and extends to the mouth of pipe
The internal groove of end face, the internal groove set steel pipe or transition conduit mouth of pipe end surface thickness at this to substantially reduce, and reduce steel pipe or transition
Pipe and contact surface of the concrete pile body in axial direction, weaken the formation of crackle.
Also by the way that the mouth of pipe with internal groove is carried out into enlarging, the enlarging causes mouth of pipe end face internal diameter to be herein more than concrete
The external diameter of pile body, crackle caused by avoiding concrete and steel pipe or the transition conduit coefficient of expansion inconsistent；Simultaneously in shaping, expansion
Concrete the appearance of underbead crack by enlarging and the guiding of internal groove, can be further avoided to radial side movement.And
Flaring structure can mortar leakage prevention phenomenon.
In addition, the setting of internal groove reduces the thickness at the mouth of pipe, beneficial in concrete and steel pipe or concrete and transition
During pipe relative expansion, play a part of telescopic shape change, reduce the generation of crackle.
Using the mixed type pre-stressed steel pipe concrete stake of structure of the present invention, it will not cracked after steam-cured,
Qualification rate is greatly improved, and avoids product defects.
Brief description of the drawings
Fig. 1 is the steel reinforced concrete pilework schematic diagram of traditional structure.
Fig. 2 is the mixed type pre-stressed steel pipe concrete pilework schematic diagram of first embodiment in the present invention.
Fig. 3 is the steel-tube construction schematic diagram before enlarging in Fig. 2.
Fig. 4 is partial enlarged drawing A in Fig. 2.
Fig. 5 is the mixed type pre-stressed steel pipe concrete pilework schematic diagram of second embodiment in the present invention.
Fig. 6 is the non-enlarging pre-structure schematic diagram of transition conduit in second embodiment of the invention.
Fig. 7 is structural representation after transition conduit enlarging in second embodiment of the invention.
Fig. 8 is the mixed type pre-stressed steel pipe concrete pilework schematic diagram of 3rd embodiment in the present invention.
Embodiment
Embodiment one
As shown in Fig. 2 including concrete pile body 1, the steel reinforcement cage 3 being built in concrete pile body 1, and it is coated on part
Steel pipe 2 outside concrete pile body 1, steel pipe 2 are coated on the end of concrete pile body 1, external diameter and the concrete pile body 1 of steel pipe 2
External diameter is identical, and steel reinforcement cage 3 is by deformed bar that is some axially extending along concrete pile body 1 and being distributed in a ring, and welding
Tie hoop outside deformed bar is formed.
The end plate 5 being connected with the deformed bar of steel reinforcement cage 3 is provided with the both ends end face of concrete pile body 1, is not being set
The end set of concrete pile body 1 for putting steel pipe 2 has skirtboard 4, and skirtboard 4 is welded and fixed with the side end panel.
In the present embodiment, shown in its Fig. 3, inwall has an internal groove for extending to mouth of pipe end face at the mouth of pipe of steel pipe 2
21, thickness of the steel pipe 2 in end face is down to 1mm or so, length 60mm of the internal groove 21 in steel pipe axial direction.
In addition, shown in its Fig. 4, flaring structure is used at the mouth of pipe of steel pipe 2, diameter is more than after enlarging at the mouth of pipe of steel pipe 2
Diameter 4mm before enlarging.
The concrete pile body 1 of uncoated steel pipe 2 and steel reinforcement cage 3 form PHC pileworks, and concrete pile body 1 with outside it
Steel pipe 2 and the steel reinforcement cage 3 in it form Prestressed T SC structures, i.e. YTSC stakes.In the present embodiment, what concrete pile body 1 used
It is C80 concrete.
Following table is using structure steel reinforced concrete stake of the present invention and parameter comparison of traditional steel reinforced concrete stake on crack defect：
Embodiment two
As shown in Fig. 5 ~ 7, including concrete pile body 1, the steel reinforcement cage 3 being built in concrete pile body 1, concrete pile body 1
End face end plate 5 is set, presstressed reinforcing steel of the two end plates 5 respectively with the both ends of steel reinforcement cage 3 be connected.
The steel pipe 2 being coated on outside pile body, the outer end of the steel pipe 2 and wherein one are provided with the one end of concrete pile body 1
End plate is welded and fixed, and skirtboard 4 is provided with the other end of concrete pile body 1, and skirtboard 4 is fixed with other end plate weld.
In the present embodiment, the concrete pile body 1 of the axially inner side of steel pipe 2 is coated with transition conduit 6, the axial direction of the transition conduit 6
The outer end mouth of pipe is provided with the outer groove for welding with the inner of steel pipe 2 so that the axial outer end mouth of pipe of transition conduit 6 and steel pipe 2
The inner is welded and fixed integrally.
The other end internal wall of pipe orifice of transition conduit 6 has an internal groove for extending to mouth of pipe end face, and the internal groove is in transition conduit 6
The length of axial direction is 60 ~ 120mm, the total length 250mm of transition conduit 6 or so.
In addition, flaring structure is used being provided with the mouth of pipe of internal groove in transition conduit 6, it is straight after enlarging at the transition conduit mouth of pipe
Footpath is more than diameter 8mm before enlarging.Certainly, the length of transition conduit 6, caliber and enlarging diameter are only example in the present embodiment
Property, it is not limitation, can be adjusted according to design requirement.
| Traditional steel reinforced concrete stake | Steel reinforced concrete stake of the present invention | |
| Crack defect accounts for the ratio of product population | 87~92% | 0~1% |
Embodiment three
As shown in figure 8, including concrete pile body 1, concrete pile body 1 is built-in with steel reinforcement cage 3, in concrete pile body 1
Portion outer surface is coated with one section of steel pipe 2, and the both ends end face of concrete pile body 1 is provided with to be connected with the presstressed reinforcing steel end of steel reinforcement cage 3
The end plate 5 connect, the skirtboard 4 for being coated on the end of concrete pile body 1 is welded with end plate 5.
In the transition conduit 6 that is coated on outside concrete pile body 1 of being provided at both ends with of steel pipe 2, one end mouth of pipe of each transition conduit 6 with
Steel pipe 2 is welded and fixed.
An internal groove for extending to mouth of pipe end face is provided with the other end internal wall of pipe orifice of transition conduit 6, the internal groove is in transition
The length of the axial direction of pipe 6 is 60 ~ 120mm, the total length 250mm of transition conduit 6 or so, equally, transition conduit 6 is being provided with internal groove
Flaring structure is used at the mouth of pipe.
| Traditional steel reinforced concrete stake | Steel reinforced concrete stake of the present invention | |
| Crack defect accounts for the ratio of product population | 92~96% | 0~1% |
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of mixed type pre-stressed steel pipe concrete stake, including concrete pile body, the steel reinforcement cage being built in concrete-pile body,
And it is coated on the external steel pipe of part concrete-pile, it is characterised in that：Inwall has one to extend at the mouth of pipe of the steel pipe
The internal groove of mouth of pipe end face；Length of the internal groove in steel pipe axial direction is 60 ~ 120mm；Using expansion at the mouth of pipe of the steel pipe
Mouth structure.
2. mixed type pre-stressed steel pipe concrete stake according to claim 1, it is characterised in that：Expand at the steel pipe nozzle
Diameter is more than 4 ~ 8mm of diameter before enlarging after mouthful.
3. a kind of mixed type pre-stressed steel pipe concrete stake, including concrete pile body, the steel reinforcement cage being built in concrete-pile body,
And it is coated on the external steel pipe of part concrete-pile, it is characterised in that：The steel pipe is connected in the axial direction with concrete pile body
Place is provided with transition conduit, and one end mouth of pipe and the steel-pipe welding of the transition conduit are fixed, and other end internal wall of pipe orifice has one to extend to pipe
The internal groove of mouth end face；Length of the internal groove in transition conduit axial direction is 60 ~ 120mm；The transition conduit is being provided with inner slope
Flaring structure is used at the mouth of pipe of mouth.
4. mixed type pre-stressed steel pipe concrete stake according to claim 3, it is characterised in that：At the transition conduit mouth of pipe
Diameter is more than 4 ~ 8mm of diameter before enlarging after enlarging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364600.0A CN105113504B (en) | 2015-06-29 | 2015-06-29 | A kind of mixed type pre-stressed steel pipe concrete stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510364600.0A CN105113504B (en) | 2015-06-29 | 2015-06-29 | A kind of mixed type pre-stressed steel pipe concrete stake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105113504A CN105113504A (en) | 2015-12-02 |
| CN105113504B true CN105113504B (en) | 2018-02-23 |
Family
ID=54661596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510364600.0A Expired - Fee Related CN105113504B (en) | 2015-06-29 | 2015-06-29 | A kind of mixed type pre-stressed steel pipe concrete stake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105113504B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2078890B (en) * | 1980-06-25 | 1984-06-06 | Butler Taper Joint Inc | Mechanical pipe joint and method of forming same |
| CN201367579Y (en) * | 2009-01-22 | 2009-12-23 | 国鼎(南通)管桩有限公司 | Pretensioned prestressing high-strength strike-resistant concrete pile |
| CN201367578Y (en) * | 2009-01-22 | 2009-12-23 | 国鼎(南通)管桩有限公司 | Large-bending-moment combined pile |
| CN104060607A (en) * | 2014-05-29 | 2014-09-24 | 国鼎(南通)管桩有限公司 | Prestress steel pipe pile and production method of prestress steel pipe pile |
| CN204080797U (en) * | 2014-05-29 | 2015-01-07 | 国鼎(南通)管桩有限公司 | The composite pile of a kind of PHC stake and YTSC stake |
| CN204825877U (en) * | 2015-06-29 | 2015-12-02 | 国鼎(南通)管桩有限公司 | Mixed type prestressing force steel pipe concrete pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61207716A (en) * | 1985-03-09 | 1986-09-16 | Yukio Matsumoto | Highly resilient sc pile |
-
2015
- 2015-06-29 CN CN201510364600.0A patent/CN105113504B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2078890B (en) * | 1980-06-25 | 1984-06-06 | Butler Taper Joint Inc | Mechanical pipe joint and method of forming same |
| CN201367579Y (en) * | 2009-01-22 | 2009-12-23 | 国鼎(南通)管桩有限公司 | Pretensioned prestressing high-strength strike-resistant concrete pile |
| CN201367578Y (en) * | 2009-01-22 | 2009-12-23 | 国鼎(南通)管桩有限公司 | Large-bending-moment combined pile |
| CN104060607A (en) * | 2014-05-29 | 2014-09-24 | 国鼎(南通)管桩有限公司 | Prestress steel pipe pile and production method of prestress steel pipe pile |
| CN204080797U (en) * | 2014-05-29 | 2015-01-07 | 国鼎(南通)管桩有限公司 | The composite pile of a kind of PHC stake and YTSC stake |
| CN204825877U (en) * | 2015-06-29 | 2015-12-02 | 国鼎(南通)管桩有限公司 | Mixed type prestressing force steel pipe concrete pile |
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| Publication number | Publication date |
|---|---|
| CN105113504A (en) | 2015-12-02 |
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