CN205421237U - Precast pile - Google Patents
Precast pile Download PDFInfo
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- CN205421237U CN205421237U CN201620257886.2U CN201620257886U CN205421237U CN 205421237 U CN205421237 U CN 205421237U CN 201620257886 U CN201620257886 U CN 201620257886U CN 205421237 U CN205421237 U CN 205421237U
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- sleeve
- spiral
- reinforcement cage
- steel reinforcement
- prefabricated pile
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Abstract
The utility model discloses a precast pile and pile body, is its characterized in that equipped with by 4 12 steel reinforcement cage and sleeve that root hot rolling spiral was made, sleeve one end inner wall end limit is equipped with to bellied fenders of sleeve axial platform, is equipped with down the spiral heading joint groove that " T " appeared on the sleeve wall, and the sleeve other end is equipped with the internal thread, and the both ends of every spiral of constitution steel reinforcement cage are equipped with the heading respectively and are connected with the sleeve through heading, joint groove, and spiral and sleeve wrap up into both ends by the concrete and expose sleeve internal screw thread precast pile, the utility model discloses because it is the same to constitute the pulling force of every reinforcing bar of steel reinforcement cage, improved precast pile's stability, corrosion resistance and anti -seismic performance, avoided precast pile to make up into the not enough of the necessary site operation of pile body, easy operation, work efficiency height, the holistic stability that has improved the pile body, anti -seismic performance, corrosion resistance ability and life have, fine economic benefits and social have.
Description
Technical field
The utility model relates to the pile foundation of building, a kind of easy construction, prefabricated real core stake simple to operate.
Background technology
nullIt is known that，The basis of building typically all uses concrete-pile，For this，In JGJ94-2008 " technical code for building pile foundation "，Specially technology requirement is proposed concrete-pile，The square pile currently used is usually prestressed-concrete pile，Such as Patent No. 2012100044922，Patent name is " prestressed concrete reality core square pile and preparation method "，It contains steel reinforcement cage、Concrete and steel reinforcement cage，Steel reinforcement cage is combined type overall structure，Slip welding method is used to be welded by precast square pile steel reinforcement cage during use，Pile body two ends are provided with the metal end plate being connected with steel reinforcement cage，The stirrup of steel reinforcement cage is welded on main muscle in the shape of a spiral，The main muscle of steel reinforcement cage uses high pre-stress rod iron，On the metal foil that rod iron two ends are corresponding, the diameter hole, location less than rod iron first it is located at during the stretch-draw of rod iron，Diameter it is provided with more than location bore dia in the side in hole, location、With location pore radius coincide through hole，When assembling steel reinforcement cage，First by rod iron two ends jumping-up (diameter is more than location bore dia)，Move to position in hole from through hole through metal foil by rod iron again，To realize the connection of rod iron and metal foil，Then select diameter to be not more than 6mm reinforcing bar and use slip welding method welding tie hoop，To form cage and to reserve stretch-draw silk eye at cage two ends metal end plate，Two stretching ends of puller system are connected with the tensioning equipment on the metal foil of cage two ends respectively，Use puller system that the prestressing force of rod iron is pulled to 0.7 σ-0.9 σ，The intensity of this steel must is fulfilled for every square millimeter more than 1420 newton，Make antirust treatment and pour into a mould concrete，When concrete strength reaches 60-70%，Unclamp tensioning equipment mould unloading，The degree of depth according to stake during use，Metal end plate through stake end is welded to form pile body，The deficiency of this high pre-stress square pile: one is that design is unreasonable，Due to the prestress of high pre-stress reinforcing bar the biggest and invisible increase pile body additional stress，Thus cause bearing capacity of pile to reduce；Two be domestic prestressed steel bar maximum gauge be 12.5mm, although intensity is high, but little with regular screw threads steel phase diameter group, big by corrosion loss rate under equal conditions；Three be the performance of prestressed steel bar be high intensity, underrelaxation, elongation is little, the foundation pile poor seismic behavior made of it；Four is that pile body is weldingly connected through the metal foil of end by prefabricated pile, and Joining Technology must be Site Welding, then carries out anti-corrosion treatment, has the deficiencies such as construction environment poor, inefficiency, connection weak effect.If it addition, above-mentioned technique uses regular screw threads steel to make square pile, then there is regular screw threads steel and there are differences at diameter and profile with prestressed steel bar, because selecting HRB400 screw-thread steel diameter thick, select traditional heading, end plate tensioning process difficult.
It is known that, use screw-thread steel to carry out stretch-draw and make precast square pile, spiral can not do prestressed component, because it is low that its characteristic is intensity, slackness is high, itself is it cannot be guaranteed that the deformation of component and crack, but the prefabricated pile of this regular screw threads reinforcement fabrication is a compression member, prestressed component is used in the tensile region of tensional element or compression member, it is used in by piling, pile body is added its additonal pressure, bearing capacity reduces, but owing to prefabricated pile is laterally put during transport and lifting, it is easy to by curved, component surface arises that crack, when crack occurs in prefabricated pile surface, the regular screw threads reinforcing bar that will be embedded with by inwall spills, and cause external environment condition to corrode spiral, pile body load-carrying properties are caused to reduce.
Summary of the invention
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, it is provided that a kind of raw easy construction, simple to operate, operating efficiency is high, the prefabricated real core stake of good connecting effect.
The utility model solves its technical problem and be the technical scheme is that
A kind of prefabricated real core stake, it is characterized in that being provided with the steel reinforcement cage being made up of 4-12 root hot-rolled ribbed bars and sleeve, sleeve one end inwall end edge is provided with the gear platform to sleeve axis projection, sleeve wall is provided with inverse-T-shaped spiral heading buckling groove, the sleeve other end is provided with internal thread, being respectively arranged at two ends with heading and be connected with sleeve through heading, buckling groove of every spiral of composition steel reinforcement cage, spiral and sleeve are rolled into two ends by concrete and expose the prefabricated pile of internal thread of sleeve.
The end of prefabricated pile described in the utility model is provided with connection cuff; connect cuff and can be located at one end of prefabricated pile; the two ends of prefabricated pile can also be located at; connect cuff to be connected with the spiral of sleeve or composition steel reinforcement cage; the end face connecting cuff flushes with the outer face of sleeve; apply pressure to facilitate to prefabricated pile, protect prefabricated pile.
Described in the utility model the two ends of steel reinforcement cage are connected with stretch-draw mechanism the tensioning nut being provided with being connected with sleeve through sleeve, tensioning nut is connected with stretching machine through stretch-draw mechanism, stretching force adjusting means includes pulling force display instrument and draft regulator, draft regulator uses two-way screw-type pulling force adjusting apparatus, stretch-draw is carried out with the every spiral to composition steel reinforcement cage, make the tension uniform of every reinforcing bar of composition steel reinforcement cage, prevent due to the reinforcing bar forming steel reinforcement cage owing to pulling force is uneven, make poor, the shock resistance difference of stability etc. of prefabricated pile.
Sleeve described in the utility model is provided with spiral heading buckling groove one end and is provided with external screw thread, and screwed retaining ring is connected with sleeve through screw thread, to prevent spiral heading main muscle when stretch-draw from coming off with sleeve.
The mid portion of sleeve described in the utility model is provided with division board, sleeve is divided into steel reinforcement cage linkage section and stepped cylinder linkage section or spring and inner nut linkage section by division board, to increase the intensity of sleeve, and prevents when casting concrete, concrete enters internal thread, and impact connects effect.
The utility model is identical due to the pulling force of every reinforcing bar of composition steel reinforcement cage, improve the stability of prefabricated pile, corrosion resistance and anti-seismic performance, avoid prefabricated pile and be combined into the deficiency of the necessary site operation of pile body, have simple to operate, operating efficiency is high, improve overall stability, anti-seismic performance, decay resistance and the service life of pile body, has good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the front view of unit stake described in the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is a kind of structural representation of the utility model middle sleeve.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
nullAs shown in the figure: a kind of prefabricated real core stake，It is characterized in that being provided with the steel reinforcement cage 1 being made up of 4-12 root hot-rolled ribbed bars and sleeve 2，Sleeve 2 one end inwall end edge is provided with the gear platform to sleeve axis projection，Sleeve wall is provided with inverse-T-shaped spiral heading buckling groove，Sleeve 2 other end is provided with internal thread，Composition steel reinforcement cage 1 every spiral be respectively arranged at two ends with heading and through heading、Buckling groove is connected with sleeve 2，Spiral 1 and sleeve 2 are rolled into two ends by concrete and expose the prefabricated pile of internal thread of sleeve，The end of described prefabricated pile is provided with connection cuff，Connect cuff and can be located at one end of prefabricated pile，The two ends of prefabricated pile can also be located at，Connect cuff to be connected with the spiral of sleeve 2 or composition steel reinforcement cage，The end face connecting cuff flushes with the outer face of sleeve 2，Connect cuff and can be provided with end plates，End face table is provided with sleeve hole，Sleeve hole is concordant with end plates through sleeve hole，Pressure is applied to prefabricated pile to facilitate，Protection prefabricated pile；Described sleeve 2 is provided with spiral heading buckling groove one end and is provided with external screw thread, and screwed retaining ring is connected with sleeve through screw thread, to prevent spiral heading main muscle when stretch-draw from coming off with sleeve；The mid portion of described sleeve 2 is provided with division board, sleeve 2 is not through hole, sleeve 2 is divided into steel reinforcement cage linkage section and stepped cylinder linkage section or spring and inner nut linkage section by division board, to increase the intensity of sleeve, and prevent when casting concrete, concrete enters internal thread, and impact connects effect；The utility model is identical due to the pulling force of every reinforcing bar of composition steel reinforcement cage, improve the stability of prefabricated pile, corrosion resistance and anti-seismic performance, avoid prefabricated pile and be combined into the deficiency of the necessary site operation of pile body, have simple to operate, operating efficiency is high, improve overall stability, anti-seismic performance, decay resistance and the service life of pile body, has good economic benefit and social benefit.
Claims (4)
1. a prefabricated pile, it is characterized in that being provided with the steel reinforcement cage being made up of 4-12 root hot-rolled ribbed bars and sleeve, sleeve one end inwall end edge is provided with the gear platform to sleeve axis projection, sleeve wall is provided with inverse-T-shaped spiral heading buckling groove, the sleeve other end is provided with internal thread, being respectively arranged at two ends with heading and be connected with sleeve through heading, buckling groove of every spiral of composition steel reinforcement cage, spiral and sleeve are rolled into two ends by concrete and expose the prefabricated pile of internal thread of sleeve.
A kind of prefabricated pile the most according to claim 1, it is characterized in that the end of prefabricated pile is provided with connection cuff, connect cuff be located at one end of prefabricated pile or be located at the two ends of prefabricated pile, connecting cuff to be connected with the spiral of sleeve or composition steel reinforcement cage, the end face connecting cuff flushes with the outer face of sleeve.
A kind of prefabricated pile the most according to claim 1, it is characterized in that the two ends of steel reinforcement cage are connected with stretch-draw mechanism the tensioning nut being provided with being connected with sleeve through sleeve, tensioning nut is connected with stretching machine through stretch-draw mechanism, stretching force adjusting means includes pulling force display instrument and draft regulator, draft regulator uses two-way screw-type pulling force adjusting apparatus, carry out stretch-draw with the every spiral to composition steel reinforcement cage, make the tension uniform of every reinforcing bar of composition steel reinforcement cage.
A kind of prefabricated pile the most according to claim 1, it is characterised in that sleeve is provided with spiral heading buckling groove one end and is provided with external screw thread, and screwed retaining ring is connected with sleeve through screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257886.2U CN205421237U (en) | 2016-03-30 | 2016-03-30 | Precast pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620257886.2U CN205421237U (en) | 2016-03-30 | 2016-03-30 | Precast pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205421237U true CN205421237U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620257886.2U Active CN205421237U (en) | 2016-03-30 | 2016-03-30 | Precast pile |
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| Country | Link |
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| CN (1) | CN205421237U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648350A (en) * | 2020-06-01 | 2020-09-11 | 上海辅延建筑科技有限公司 | Combined end plate and precast pile |
| CN114687344A (en) * | 2020-12-25 | 2022-07-01 | 连云港华云桩业有限公司 | Seawater corrosion resistant internal clamping type mechanical locking device |
-
2016
- 2016-03-30 CN CN201620257886.2U patent/CN205421237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111648350A (en) * | 2020-06-01 | 2020-09-11 | 上海辅延建筑科技有限公司 | Combined end plate and precast pile |
| CN114687344A (en) * | 2020-12-25 | 2022-07-01 | 连云港华云桩业有限公司 | Seawater corrosion resistant internal clamping type mechanical locking device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |