CN201330395Y - Pretensioning prestressed concrete hollow shaped square pile - Google Patents
Pretensioning prestressed concrete hollow shaped square pile Download PDFInfo
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- CN201330395Y CN201330395Y CNU2008201824352U CN200820182435U CN201330395Y CN 201330395 Y CN201330395 Y CN 201330395Y CN U2008201824352 U CNU2008201824352 U CN U2008201824352U CN 200820182435 U CN200820182435 U CN 200820182435U CN 201330395 Y CN201330395 Y CN 201330395Y
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Abstract
The utility model relates to a pretensioning prestressed concrete hollow shaped square pile, which aims to resolve the problem that existing square piles are poor in bending resistance and crack resistance. The pretensioning prestressed concrete hollow shaped square pile comprises an end plate, ferrules welded with the end plate, a reinforced concrete hollow pile body and one or a plurality of transverse support bodies, wherein the reinforced concrete hollow pile body is fixedly connected between two end plate ferrules and the transverse support bodies distributed at intervals are arranged in an inner bore of the pile body and are integrated with the pile body. Besides, the transverse support bodies are in inner convex ring shape or cross shape, and each transverse support body is an inner convex ring with a crossed brace. The transverse support bodies with reinforcing function arranged in the bore effectively increases stiffness, ductility, bending and crack resisting capacity of the hollow square pile, and then the hollow square pile can prevent the pile body from over displacement during construction process of pile sinking on soft ground foundation, thereby being favorable for spreading the pretensioning presstressed concrete hollow shaped square piles.
Description
Technical field
The utility model relates to a kind of build concrete member, the hollow abnormal shape side stake of particularly a kind of pretensioning prestressed concrete.
Background technology
The stake of the hollow abnormal shape side of the pretensioning prestressed concrete of prior art is the prestressed concrete prefabricated units that adopt a kind of hollow cylinder that pretensioned prestressing technology and the moulding of concrete centrifugal method make.In numerous pile foundations, it is higher that pretensioning prestressed concrete hollow abnormal shape side stake has bearing capacity of single pile, and design selects for use scope wider, adaptive faculty to geological conditions is stronger, advantages such as the bore forming environment is better, and speed of application is very fast, it has been widely used in the ground of all kinds building and has handled.At present, the hollow square pile that uses in the civil engineering all is to produce and use by national standard " pre-stressed concrete hollow square stake " JG197-2006 and relevant national building standard atlas or other relevant province's standard atlas.
But along with it applies the continuous expansion of face, the hollow square pile of prior art progressively presents following shortcoming: its rigidity and ductility and bending resistance, anti-crack ability manifest deficiency, as in the piling construction process, often because operating modes such as soil compaction effect or soil excavation make stake produce over-large displacement, produce the generation of crack and even fracture accident at the thin-walled place of pile body, thereby influence its popularization and use.
Summary of the invention
The utility model is for overcoming the deficiencies in the prior art, a kind of rigidity and ductility and bending resistance, anti-crack ability that can improve hollow square pile effectively is provided, avoids engineering accidents such as pile body over-large displacement, cracking and even fracture to take place substantially and do not increase pile sinking power, the no outer lug disturbance soil body, can guarantee the hollow abnormal shape side of pretensioning prestressed concrete of pile body deck concrete quality when making.
For achieving the above object, the stake of the hollow abnormal shape side of the utility model pretensioning prestressed concrete comprise the steel end plate, with a steel cuff of plate welding, be connected in the concrete hollow pile body between the two ends sleeve-board hoop, one or more spaced apart and pile body cross binding bodies in aggregates are arranged in the endoporus of pile body.So design, the introducing of cross binding body can significantly increase the mechanical strength of pile body.It has the rigidity that can improve hollow square pile effectively and ductility and bending resistance, anti-crack ability, avoids engineering accidents such as pile body over-large displacement, cracking and even fracture to take place substantially and can guarantee the advantage of pile body deck concrete quality when not increasing pile sinking power, the no outer lug disturbance soil body, making.
As optimization, described cross binding body is made by metal material or is made by steel bar concrete.So design, the convenient selection is suitable for.
As optimization, the reinforcing cage of described concrete hollow pile body is formed by connecting by many axial prestress reinforcing bar and spiral reinforcements arranged side by side, and the reinforcing bar of the cross binding body that cross binding body that described metal material is made or steel bar concrete are made is connected the location with pile body spiral reinforcement inwall; Described cross binding body is made by the steel bar concrete that adds steel fibre or add nonmetal technical fiber.So design, the reinforcing cage of described concrete hollow pile body is formed by connecting by many axial prestress reinforcing bar and spiral reinforcements arranged side by side, and then few with muscle, structural performance is good.The reinforcing bar of the cross binding body that cross binding body that described metal material is made or steel bar concrete are made is connected the location with pile body spiral reinforcement inwall, then can come strengthening structure intensity by increasing reinforcing cage stability.Described cross binding body is made by the steel bar concrete that adds steel fibre or add nonmetal technical fiber, then can significantly increase the overall construction intensity of cross binding body, and then strengthens the support performance to pile body.
As optimization, the axial spacing of described a plurality of cross binding bodies is a 2-4 rice.So design when axial spacing is 2-4 rice, can be satisfied the structural performance needs of strengthening support, and spacing is less than 2 meters, will waste supporter, and spacing can not satisfy the support needs again greater than 4 meters.
As optimization, the steel end plate is all welded at the two ends of the steel disk cage axial prestress reinforcing bar of described concrete hollow pile body; Or the steel end plate is all welded at axial prestress reinforcing bar and spiral reinforcement two ends; Or axial prestress reinforcing bar two ends all weld the steel end plate, and the steel cuff is all welded at the spiral reinforcement two ends.So design, the steel end plate is all welded at the two ends of the steel disk cage axial prestress reinforcing bar of described concrete hollow pile body, and convenient the manufacturing in axial prestress reinforcing bar density hour, is difficult to the soundness that guarantees that end plate steel cuff and pile body are connected.The steel end plate is all welded at axial prestress reinforcing bar and spiral reinforcement two ends, and the soundness that then is connected is stronger, and stability is better.The steel end plate is all welded at axial prestress reinforcing bar two ends, and the steel cuff is all welded at the spiral reinforcement two ends, and then soundness is the strongest, stability is also best, particularly can significantly strengthen end plate steel cuff and pile body bonding strength, during piling, the crack occur between avoiding.
As optimization, described cross binding body is that convex is ring-like or cross.So design, convex is ring-like, and supporting surface is bigger with respect to cross, and stability is better: cross then have a stronger support performance.As optimization, described cross binding body has the convex of cross hang ring-like in being.So design, supporting surface is big, and supportive and stability are all very good.
The preparation method of existing side stake comprises reinforcing cage and the two ends plate of making pile body, makes cuff, makes the mould of pile body, and the presstressed reinforcing steel of stretch-draw pile body carries out centrifugal forming, steam-cured, the demoulding, stacking to pile body and supports expansion, finished product naturally.
The making step of the utility model side's stake is: (1), according to the pile body designing requirement, make punching block, reinforcing cage, end plate, cuff and cross binding body; (2), the cross binding body is placed design attitude in the reinforcing cage, make it affixed with the spiral reinforcement inwall of reinforcing cage; (3), connecting reinforcement cage and end plate and cuff and place punching block; (4), standby standard concrete is built and be full of punching block; (5), punching block capping and placing is carried out centrifugal on the centrifuge; (6), after centrifugal the finishing, it is steam-cured to enter steam-cured pond; (7), the demoulding, pile body are put into and are stacked a natural curing.
After adopting technique scheme, the hollow abnormal shape side stake of the utility model pretensioning prestressed concrete is owing to be provided with the cross binding body of booster action in hollow hole, effectively raise the rigidity of hollow square pile and ductility and bending resistance, anti-crack ability, make this kind hollow square pile in the piling construction process of subgrade basis, substantially avoid the pile body over-large displacement, thereby guaranteed hollow abnormal shape side large-area popularization of stake of this pretensioning prestressed concrete and use.
Description of drawings
Fig. 1 is the structural representation of first kind of embodiment of the hollow abnormal shape side's stake of the utility model pretensioning prestressed concrete;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the structural representation of second kind of embodiment of the hollow abnormal shape side's stake of the utility model pretensioning prestressed concrete;
Fig. 4 is the B-B view of Fig. 3.
The specific embodiment
Embodiment one, shown in Fig. 1-2, the stake of the hollow abnormal shape side of the utility model pretensioning prestressed concrete comprise steel end plate 1, with the steel cuff 2 of a plate 1 welding, be connected in the concrete hollow pile body 3 between two ends plate 1 cuff 2.The ring-like supporter made from pile body steel bar concrete in aggregates 5 of convex that has in the endoporus 4 of pile body 3 that a plurality of intervals 2-4 rice distributes.The reinforcing cage of described concrete hollow pile body 3 is formed by connecting by many axial prestress reinforcing bars 7 arranged side by side and spiral reinforcement 6, and the reinforcing bar of the ring-like supporter 5 of described convex is connected the location with pile body spiral reinforcement 6 inwalls.The choosing of ring-like supporter 5 top grades of described convex is made by the steel bar concrete that adds steel fibre or add nonmetal technical fiber, also can be made by steel.Steel end plate 1 is all welded at axial prestress reinforcing bar 7 two ends of the steel disk cage of described concrete hollow pile body 3.
Embodiment two, as shown in Figure 3-4, the stake of the hollow abnormal shape side of the utility model pretensioning prestressed concrete comprise steel end plate 1, with the steel cuff 2 of a plate 1 welding, be connected in the concrete hollow pile body 3 between two ends plate 1 cuff 2.The cross supporter made from pile body steel bar concrete in aggregates 8 that has in the endoporus 4 of pile body 3 that a plurality of intervals 2-4 rice distributes.The reinforcing cage of described concrete hollow pile body 3 is formed by connecting by many axial prestress reinforcing bars 7 arranged side by side and spiral reinforcement 6, and the reinforcing bar of described cross supporter 8 is connected the location with pile body spiral reinforcement 6 inwalls.The choosing of described cross supporter 8 top grades is made by the steel bar concrete that adds steel fibre or add nonmetal technical fiber, also can be made by steel.Steel end plate 1 is all welded at axial prestress reinforcing bar 7 two ends of the steel disk cage of described concrete hollow pile body 3.
Its preparation method is: (1), according to the pile body designing requirement, make punching block, reinforcing cage, end plate, cuff and cross binding body; (2), the cross binding body is placed design attitude in the reinforcing cage, make it affixed with the inwall of the spiral reinforcement of reinforcing cage; (3), connecting reinforcement cage and end plate and cuff and place punching block; (4), standby standard concrete 6 is built and be full of punching block; (5), capping punching block and placing carries out centrifugal on the centrifuge; (6), after centrifugal the finishing, it is steam-cured to enter steam-cured pond; (7), the demoulding, stake are put into and are stacked a natural curing.It can effectively improve the rigidity of pile body and ductility and bending resistance, anti-crack ability and not increase pile sinking power, the no outer lug disturbance soil body, can guarantee pile body deck concrete quality.
Claims (7)
1, a kind of pretensioning prestressed concrete hollow abnormal shape side stake, comprise the steel end plate, with the steel cuff of plate welding, be connected in the concrete hollow pile body between the two ends sleeve-board hoop, it is characterized in that in the endoporus of pile body, having one or more spaced apart and pile body cross binding bodies in aggregates.
2, hollow abnormal shape side stake on the pretensioned prestressing coagulation according to claim 1 is characterized in that described cross binding body made by metal material or made by steel bar concrete.
3, hollow abnormal shape side stake on the pretensioned prestressing coagulation according to claim 2, the reinforcing cage that it is characterized in that described concrete hollow pile body is formed by connecting by many axial prestress reinforcing bar and spiral reinforcements arranged side by side, and the reinforcing bar of the cross binding body that cross binding body that described metal material is made or steel bar concrete are made is connected the location with pile body spiral reinforcement inwall; Described cross binding body is made by the steel bar concrete that adds steel fibre or add nonmetal technical fiber.
4, hollow abnormal shape side stake on the pretensioned prestressing coagulation according to claim 3, the axial spacing that it is characterized in that described a plurality of cross binding bodies is a 2-4 rice.
5, hollow abnormal shape side stake on the pretensioned prestressing coagulation according to claim 3 is characterized in that the steel end plate is all welded at the two ends of the reinforcing cage axial prestress reinforcing bar of described concrete hollow pile body; Or the steel end plate is all welded at axial prestress reinforcing bar and spiral reinforcement two ends; Or axial prestress reinforcing bar two ends all weld the steel end plate, and the steel cuff is all welded at the spiral reinforcement two ends.
5, according to hollow abnormal shape side stake on claim 1 or 2 or 3 or the 4 or 5 described pretensioned prestressing coagulations, it is characterized in that described cross binding body is that convex is ring-like or cross.
6, according to the hollow abnormal shape side stake of the described pretensioning prestressed concrete of claim 5, it is characterized in that described cross binding body has the convex of cross hang ring-like in being.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201824352U CN201330395Y (en) | 2008-12-31 | 2008-12-31 | Pretensioning prestressed concrete hollow shaped square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201824352U CN201330395Y (en) | 2008-12-31 | 2008-12-31 | Pretensioning prestressed concrete hollow shaped square pile |
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| CN201330395Y true CN201330395Y (en) | 2009-10-21 |
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| CNU2008201824352U Expired - Lifetime CN201330395Y (en) | 2008-12-31 | 2008-12-31 | Pretensioning prestressed concrete hollow shaped square pile |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953375A (en) * | 2011-08-18 | 2013-03-06 | 李胜男 | Prestressing foundation pile and pile splicing method and pile head treatment method thereof |
| 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 |
| CN106113224A (en) * | 2016-06-12 | 2016-11-16 | 中国十七冶集团有限公司 | A kind of opening concrete hollow pile tube and using method |
| CN109208588A (en) * | 2018-09-05 | 2019-01-15 | 河北工程大学 | A kind of novel steel tube cross core-inserting pile |
-
2008
- 2008-12-31 CN CNU2008201824352U patent/CN201330395Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953375A (en) * | 2011-08-18 | 2013-03-06 | 李胜男 | Prestressing foundation pile and pile splicing method and pile head treatment method thereof |
| CN102953375B (en) * | 2011-08-18 | 2015-04-01 | 李胜男 | Prestressing foundation pile and pile splicing method and pile head treatment method thereof |
| 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 |
| CN106113224A (en) * | 2016-06-12 | 2016-11-16 | 中国十七冶集团有限公司 | A kind of opening concrete hollow pile tube and using method |
| CN109208588A (en) * | 2018-09-05 | 2019-01-15 | 河北工程大学 | A kind of novel steel tube cross core-inserting pile |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20091021 |