CN103485333A - Corrugated hollow steel pipe friction pile and construction method thereof - Google Patents
Corrugated hollow steel pipe friction pile and construction method thereof Download PDFInfo
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- CN103485333A CN103485333A CN201310308497.9A CN201310308497A CN103485333A CN 103485333 A CN103485333 A CN 103485333A CN 201310308497 A CN201310308497 A CN 201310308497A CN 103485333 A CN103485333 A CN 103485333A
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Abstract
The invention relates to a concrete friction pipe and discloses a corrugated hollow steel pipe friction pile and a construction method thereof. The corrugated hollow steel pipe friction pile comprises a corrugated steel pipe (1). The longitudinal section of the pipe wall of the corrugated hollow steel pipe (1) is corrugated. A concrete pile (2) is arranged outside the corrugated hollow steel pipe (1). The construction method comprises the steps of a) putting the corrugated hollow steel pipe (1) in a drilled pile hole; b) placing a reinforcement cage between the corrugated hollow steel pipe (1) and the pile hole and pouring concrete to form the concrete pile (2). The corrugated hollow steel pipe friction pile and the construction method thereof have the advantages that since the corrugated hollow steel pipe is arranged and the longitudinal section of the pipe wall of the corrugated hollow steel pipe is corrugated, the contact surface of the steel pipe and the concrete is increased and the friction between the steel pipe and the concrete is increased; since the steel pipe is hollow, on one hand, the amount of used concrete and the deadweight of a pile body are reduced and the bearing capacity of the pile body is increased; on the other hand, second maintenance and reinforcement can be performed to the pile body by entering the pile and arranging stumps, burls and the like.
Description
Technical field
The present invention relates to the concrete friction pile, relate in particular to a kind of waveform hollow steel pipe friction pile and job practices.
Background technology
Friction pile is to bear the weight of superstructure by the frictional force of pile body surface and former geology soil, the pile center position of existing friction pile is concrete, because it does not contact with the earth, does not therefore have due effect, increase on the contrary the weight of friction pile, offset a part of frictional force.
Summary of the invention
The present invention is directed to the concrete in friction pile of the prior art centre, not only can not increase the frictional force of friction pile, increased on the contrary the weight of friction pile, offset a part of frictional force, the waveform hollow steel pipe that a kind of inside is hollow is provided, the structure of outside concreting, reduced on the one hand concrete consumption, reduced the deadweight of pile body simultaneously, increased the supporting capacity of pile body, the longitudinal cross-section of waveform hollow steel pipe tube wall is waveform, steel pipe and concrete contact area have been increased, increased frictional force, on the other hand, can be by entering in stake, pile body is carried out to waveform hollow steel pipe friction pile and the job practices of secondary maintenance and reinforcing by arranging the modes such as branch's stake.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
Waveform hollow steel pipe friction pile, comprise the waveform hollow steel pipe, and the longitudinal cross-section of described waveform hollow steel pipe tube wall is waveform, and the waveform hollow steel pipe arranges concrete pile outward.The waveform hollow steel pipe is for to form by the corrugated sheet steel bending, and its longitudinal cross-section shape is also identical with the cross section of existing multiple waveforms steel plate, and the waveform hollow steel pipe also can pass through the formed by integrally casting moulding.The longitudinal cross-section of waveform hollow steel pipe tube wall is waveform, the shape of this waveform can be the corrugated sheet steel in existing random waveform cross section, due to the concavo-convex waveform of being shaped as of hollow steel pipe and outside concrete surface, it is similar and zigzag again, steel plate and concrete tooth tooth interlock, and improve the bonding strength between steel plate and concrete.
As preferably, described waveform hollow steel pipe is the multisection type splicing, and the splicing port adopts the concentric reducer socket, after socket, adopts bolt or electrical pads solid.Connect the connection that technological requirement is very quick, succinct herein, this connection can also add sealing ring in concentric reducer overlaps seam, improves the sealing performance between the waveform hollow steel pipe.
As preferably, described concrete contains reinforcing cage, and the inboard of reinforcing cage arranges the fixedly reinforcing bar be connected with the waveform hollow steel pipe or prevents eccentric guide rail reinforcing bar.In order to prevent waveform hollow steel pipe bias, fixedly reinforcing bar is horizontal bar dowel on the whole, is that waveform hollow steel pipe and reinforcing cage adopt while putting into simultaneously.Anti-eccentric guide rail reinforcing bar, be the longitudinal reinforcement up and down first be welded on reinforcing cage, and quantity is more than three roads, and this technique hollow steel pipe is put into after being.
As preferably, described waveform hollow steel pipe is provided with the steel pipe services aperture, and concrete pile is provided with the concrete services aperture communicated with the steel pipe services aperture.
As preferably, be provided with and extend outside concrete pile in described steel pipe services aperture and the concrete services aperture that communicates with it, the branch's stake contacted with the earth, the angle a of the outer wall of branch's stake and concrete pile is less than or equal to 90 °.Branch's stake is steel pipe, steel column or stub.
As preferably, described steel pipe services aperture and the concrete services aperture communicated with it arrange the burr outward, and the burr is concrete.
As preferably, the angle a of the outer wall of the stake of described branch and concrete pile is less than or equal to 90 °.The outer wall that angle a is branch's stake and concrete pile is along the angle that gos deep into the direction in soil.
As preferably, in described concrete pile, be furnished with reinforcing cage.
Waveform hollow steel pipe friction pile job practices, comprise above-mentioned waveform hollow steel pipe friction pile, and step is as follows:
A, reinforcing cage and waveform hollow steel pipe are put into simultaneously to the stake hole of accomplishing fluently; Or first put reinforcing cage and put again the waveform hollow steel pipe;
B, between waveform hollow steel pipe and stake hole, place reinforcing cage concreting, generate concrete pile.
As preferably, also comprise c, after concrete pile solidifies, pump the water in the waveform hollow steel pipe, and beat through hole in the waveform hollow steel pipe, through hole connection waveform hollow steel pipe and the earth;
D, squeeze into branch's stake in through hole.
As preferably, also comprise c, after concrete pile solidifies, pump the water in the waveform hollow steel pipe, and beat through hole in the waveform hollow steel pipe, through hole connection waveform hollow steel pipe and the earth;
D, by through hole high pressure pouring concrete, form the burr.
The present invention is by arranging the hollow hollow steel pipe of waveform, the longitudinal cross-section of waveform hollow steel pipe tube wall is waveform, steel pipe and concrete contact area have been increased, thereby having improved steel pipe and concrete frictional force, is hollow in steel pipe, has reduced the deadweight of concrete consumption and pile body, increased the supporting capacity of pile body, on the other hand, can be by entering in stake, the modes such as branch's stake, the burr of being arranged are carried out secondary maintenance and reinforcing to pile body.
The accompanying drawing explanation
The structural representation that Fig. 1 is the embodiment of the present invention 1.
The structural representation that Fig. 2 is waveform hollow steel pipe in the present invention.
Wherein 1-waveform hollow steel pipe, 2-concrete pile, 3-branch stake, 4-lower manhole, 5-the earth, 6-burr, 11-steel pipe services aperture, 21-concrete services aperture.
The specific embodiment
Below in conjunction with accompanying drawing 1 to accompanying drawing 2 and the specific embodiment, the present invention is described in further detail:
Waveform hollow steel pipe friction pile, as shown in Figure 1, 2, comprise waveform hollow steel pipe 1, and the longitudinal cross-section of described waveform hollow steel pipe 1 tube wall is waveform, the outer concrete pile 2 that arranges of waveform hollow steel pipe 1.The top of waveform hollow steel pipe friction pile also is provided with lower manhole 4.
Waveform hollow steel pipe 1 adopts the concentric reducer socket for multisection type splicing, splicing port, after socket, adopts bolt or electrical pads solid.Connect the connection that technological requirement is very quick, succinct herein, this connection can also add sealing ring in concentric reducer overlaps seam, improves the sealing performance between waveform hollow steel pipe 1.Waveform hollow steel pipe 1 is provided with steel pipe services aperture 11, and concrete pile 2 is provided with the concrete services aperture 21 communicated with steel pipe services aperture 11.
Be provided with and extend outside concrete pile 2 in steel pipe services aperture 11 and the concrete services aperture 21 that communicates with it, the branch's stake 3 contacted with the earth 5, branch's stake 3 equals 60 ° with the angle a of the outer wall of concrete pile 2.Branch's stake is steel pipe.
Branch's stake 3 equals 90 ° with the angle a of the outer wall of concrete pile 2.Be furnished with reinforcing cage in concrete pile 2.Be provided with and extend concrete pile 2 outer walls, the branch's stake 3 contacted with the earth 5 in steel pipe services aperture 11 and concrete services aperture 21.Branch's stake 3 is for being horizontally disposed with.When branch's stake 3 is horizontally disposed with, the length that branch's stake 3 of equal length soil outer with concrete pile 2 contacts is longer, and contact area is also larger, and the frictional force therefore produced is also larger, also maximum to the frictional force of friction pile integral body.
Waveform hollow steel pipe friction pile job practices, comprise above-mentioned waveform hollow steel pipe friction pile, and step is as follows:
A, reinforcing cage and waveform hollow steel pipe 1 are put into simultaneously to the stake hole of accomplishing fluently;
B, between waveform hollow steel pipe 1 and stake hole, place reinforcing cage concreting, generate concrete pile 2.
Also comprise c, after concrete pile 2 solidifies, pump the water in waveform hollow steel pipe 1, and beat through hole waveform hollow steel pipe 1 in, through hole connection waveform hollow steel pipe 1 and the earth;
D, squeeze into branch's stake 3 in through hole.
Embodiment 2
Waveform hollow steel pipe friction pile, as shown in Figure 1, 2, comprise waveform hollow steel pipe 1, and the longitudinal cross-section of described waveform hollow steel pipe 1 tube wall is waveform, the outer concrete pile 2 that arranges of waveform hollow steel pipe 1.
Waveform hollow steel pipe 1 is provided with steel pipe services aperture 11, and concrete pile 2 is provided with the concrete services aperture 21 communicated with steel pipe services aperture 11.Be provided with and extend outside concrete pile 2 in steel pipe services aperture 11 and the concrete services aperture 21 that communicates with it, the branch's stake 3 contacted with the earth 5, branch's stake 3 is 80 ° with the angle a of the outer wall of concrete pile 2.Branch's stake is stub.
The outer burr 6 that arranges of steel pipe services aperture 11 and the concrete services aperture 21 communicated with it.The burr 6 is concrete.Branch's stake 3 is 60 ° with the angle of the outer wall of concrete pile 2.
Be furnished with reinforcing cage in concrete pile 2.Described concrete contains reinforcing cage, and the inboard of reinforcing cage arranges fixedly reinforcing bar or the anti-eccentric guide rail reinforcing bar be connected with waveform hollow steel pipe 1.In order to prevent waveform hollow steel pipe bias, fixedly reinforcing bar is horizontal bar dowel on the whole, is that waveform hollow steel pipe and reinforcing cage adopt while putting into simultaneously.Anti-eccentric guide rail reinforcing bar, be the longitudinal reinforcement up and down first be welded on reinforcing cage, and quantity is more than three roads, and this technique hollow steel pipe is put into after being.
Waveform hollow steel pipe friction pile job practices, comprise above-mentioned waveform hollow steel pipe friction pile, and step is as follows:
A, first put reinforcing cage in the stake of accomplishing fluently in hole and put again waveform hollow steel pipe 1;
B, between waveform hollow steel pipe 1 and stake hole, place reinforcing cage concreting, generate concrete pile 2.
Also comprise c, after concrete pile 2 solidifies, pump the water in waveform hollow steel pipe 1, and beat through hole waveform hollow steel pipe 1 in, through hole connection waveform hollow steel pipe 1 and the earth;
D, squeeze into branch's stake 3 in through hole.It is that to be arranged on ends in the earth 5 be that distance between 31Yu ground, 32， upper end, lower end is less than the distance between 32Yu ground, lower end in upper end 31， branch stake 3 that branch's stake 3 is arranged on ends in concrete pile 2.
Branch's stake 3 is inserted by the steel pipe services aperture 11 on waveform hollow steel pipe 1, through the concrete services aperture 21 on concrete pile 2, enter in soil, due to concrete services aperture 21 for tiltedly establishing, therefore, after branch's stake 5 is inserted, the upper end 51 of branch's stake 5 with concrete pile 2 links from the earth's surface close together, the lower end 51 of branch's stake 5 is distant from earth's surface with the soil contact jaw.When friction pile occurs, the hard thing existed near the earth of branch's stake 5 running into of tiltedly establishing during as stone or rock, can block friction pile firmly, stops friction pile to continue sinking.
Simultaneously, after concrete pile 2 solidifies, pump the water in waveform hollow steel pipe 1, and beat through hole in waveform hollow steel pipe 1, through hole is communicated with waveform hollow steel pipe 1 and the earth; Form the burr 6 by through hole high pressure pouring concrete.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (10)
1. waveform hollow steel pipe friction pile, comprise waveform hollow steel pipe (1), it is characterized in that: the longitudinal cross-section of described waveform hollow steel pipe (1) tube wall is waveform, the outer concrete pile (2) that arranges of waveform hollow steel pipe (1).
2. waveform hollow steel pipe friction pile according to claim 1 is characterized in that: described waveform hollow steel pipe (1) is the multisection type splicing, and the splicing port adopts the concentric reducer socket, after socket, adopts bolt or electrical pads solid.
3. waveform hollow steel pipe friction pile according to claim 1, it is characterized in that: described concrete contains reinforcing cage, and the inboard of reinforcing cage arranges the fixedly reinforcing bar be connected with waveform hollow steel pipe (1) or prevents eccentric guide rail reinforcing bar.
4. waveform hollow steel pipe friction pile according to claim 1, it is characterized in that: described waveform hollow steel pipe (1) is provided with steel pipe services aperture (11), and concrete pile (2) is provided with the concrete services aperture (21) communicated with steel pipe services aperture (11).
5. waveform hollow steel pipe friction pile according to claim 2, it is characterized in that: in described steel pipe services aperture (11) and the concrete services aperture (21) that communicates with it, be provided with and extend outside concrete pile (2), the branch's stake (3) contacted with the earth (5), branch's stake (3) is less than or equal to 90 ° with the angle a of the outer wall of concrete pile (2).
6. waveform hollow steel pipe friction pile according to claim 2 is characterized in that: described steel pipe services aperture (11) and the concrete services aperture (21) communicated with it is outer that the burr (6) is set, the burr (6) is concrete.
7. waveform hollow steel pipe friction pile according to claim 1, it is characterized in that: described concrete pile is furnished with reinforcing cage in (2).
8. waveform hollow steel pipe friction pile job practices, comprise waveform hollow steel pipe friction pile claimed in claim 1, it is characterized in that: comprise the following steps:
A, reinforcing cage and waveform hollow steel pipe (1) are put into simultaneously to the stake hole of accomplishing fluently; Or first put reinforcing cage and put again waveform hollow steel pipe (1);
B, between waveform hollow steel pipe (1) and stake hole concreting, generate concrete pile (2).
9. waveform hollow steel pipe friction pile job practices according to claim 8, is characterized in that: also comprise
C, after concrete pile (2) solidifies, pump the water in waveform hollow steel pipe (1), and beat through hole waveform hollow steel pipe (1) in, through hole connection waveform hollow steel pipe (1) and the earth;
D, squeeze into branch's stake (3) in through hole.
10. waveform hollow steel pipe friction pile job practices according to claim 8, is characterized in that: also comprise
C, after concrete pile (2) solidifies, pump the water in waveform hollow steel pipe (1), and beat through hole waveform hollow steel pipe (1) in, through hole connection waveform hollow steel pipe (1) and the earth;
D, by through hole high pressure pouring concrete, form the burr (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310308497.9A CN103485333B (en) | 2013-07-18 | 2013-07-18 | Waveform hollow steel pipe friction pile and construction method |
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| CN201310308497.9A CN103485333B (en) | 2013-07-18 | 2013-07-18 | Waveform hollow steel pipe friction pile and construction method |
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Cited By (6)
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| CN106836260A (en) * | 2016-12-16 | 2017-06-13 | 兰州理工大学 | A kind of crawler belt steel-pipe pile and construction method for reducing negative friction |
| CN107816053A (en) * | 2017-11-27 | 2018-03-20 | 佛山科学技术学院 | A kind of pile structure of civil engineering |
| CN107938659A (en) * | 2017-11-21 | 2018-04-20 | 中国冶集团有限公司 | A kind of friction pile and its construction method |
| CN108589709A (en) * | 2018-05-15 | 2018-09-28 | 中国冶集团有限公司 | Hollow no stirrup friction pile and its construction method |
| CN108755790A (en) * | 2018-08-03 | 2018-11-06 | 浙江大学城市学院 | The novel squeezed uplift pile conical hole forming of the falling umbrella frame device of one kind and construction method |
| CN114277831A (en) * | 2022-01-11 | 2022-04-05 | 中国电建集团福建省电力勘测设计院有限公司 | Offshore pawl type concrete filled steel tube pile foundation, adaptive drill bit and foundation construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106836260A (en) * | 2016-12-16 | 2017-06-13 | 兰州理工大学 | A kind of crawler belt steel-pipe pile and construction method for reducing negative friction |
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| CN107816053A (en) * | 2017-11-27 | 2018-03-20 | 佛山科学技术学院 | A kind of pile structure of civil engineering |
| CN108589709A (en) * | 2018-05-15 | 2018-09-28 | 中国冶集团有限公司 | Hollow no stirrup friction pile and its construction method |
| CN108589709B (en) * | 2018-05-15 | 2021-06-29 | 中国一冶集团有限公司 | Hollow friction pile without stirrups and construction method thereof |
| CN108755790A (en) * | 2018-08-03 | 2018-11-06 | 浙江大学城市学院 | The novel squeezed uplift pile conical hole forming of the falling umbrella frame device of one kind and construction method |
| CN114277831A (en) * | 2022-01-11 | 2022-04-05 | 中国电建集团福建省电力勘测设计院有限公司 | Offshore pawl type concrete filled steel tube pile foundation, adaptive drill bit and foundation construction method |
| CN114277831B (en) * | 2022-01-11 | 2023-09-22 | 中国电建集团福建省电力勘测设计院有限公司 | Offshore pawl type steel pipe concrete pile foundation, adaptive drill bit and foundation construction method |
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Owner name: ZHEJIANG CTB CORRUGATED STEEL WEB CO., LTD. Free format text: FORMER OWNER: HANGZHOU BOSHU CIVIL ENGINEERING TECHNOLOGY CO., LTD. Effective date: 20141124 |
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