CN103485333B - Waveform hollow steel pipe friction pile and construction method - Google Patents
Waveform hollow steel pipe friction pile and construction method Download PDFInfo
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- CN103485333B CN103485333B CN201310308497.9A CN201310308497A CN103485333B CN 103485333 B CN103485333 B CN 103485333B CN 201310308497 A CN201310308497 A CN 201310308497A CN 103485333 B CN103485333 B CN 103485333B
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Abstract
The present invention relates to concrete friction stake, disclose a kind of waveform hollow steel pipe friction pile and construction method, comprise waveform hollow steel pipe (1), the longitudinal cross-section of described waveform hollow steel pipe (1) tube wall is waveform, arranges concrete pile (2) outside waveform hollow steel pipe (1).Construction method, comprises a, waveform hollow steel pipe (1) is put into the stake holes of accomplishing fluently; B, between waveform hollow steel pipe (1) and stake holes, place reinforcing cage and concreting, generate concrete pile (2).The present invention is by arranging waveform hollow steel pipe, the longitudinal cross-section of waveform hollow steel pipe tube wall is waveform, increase steel pipe and concrete contact area, thus improve steel pipe and concrete frictional force, be hollow in steel pipe, decrease the deadweight of concrete consumption and pile body, increase the supporting capacity of pile body, on the other hand, can by entering in stake, the mode such as layout stub, tree pomegranate of carrying out carries out secondary maintenance and reinforcing to pile body.
Description
Technical field
The present invention relates to concrete friction stake, particularly relate to a kind of waveform hollow steel pipe friction pile and construction method.
Background technology
Friction pile leans on the frictional force of pile body surface and original place matter soil to bear the weight of superstructure, the pile center position of existing friction pile is concrete, because it does not contact with the earth, does not therefore have due effect, add the weight of friction pile on the contrary, counteract the frictional force of a part.
Summary of the invention
The present invention is directed to the concrete in friction pile centre of the prior art, not only can not increase the frictional force of friction pile, add the weight of friction pile on the contrary, counteract the frictional force of a part, provide the waveform hollow steel pipe that a kind of inside is hollow, the structure of outside concreting, decrease concrete consumption on the one hand, decrease the deadweight of pile body simultaneously, increase the supporting capacity of pile body, the longitudinal cross-section of waveform hollow steel pipe tube wall is waveform, increase steel pipe and concrete contact area, increase frictional force, on the other hand, can by entering in stake, by modes such as layout branch pile, pile body is carried out to waveform hollow steel pipe friction pile and the construction method of secondary maintenance and reinforcing.
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, comprises waveform hollow steel pipe, and the longitudinal cross-section of described waveform hollow steel pipe tube wall is waveform, arranges concrete pile outside waveform hollow steel pipe.Waveform hollow steel pipe is for form by corrugated sheet steel bending, and its longitudinal cross-section shape is also identical with the cross section of existing multiple waveforms steel plate, and waveform hollow steel pipe also can be shaping by formed by integrally casting.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, because the shape of hollow steel pipe and outer concrete contact surface is concavo-convex waveform, 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 multisection type splicing, and splicing port adopts concentric reducer socket, adopt after socket bolt or electrical pads solid.Joining Technology requires very quick, succinct connection herein, and this connection can also be overlapped in seam at concentric reducer and be added sealing ring, improves the sealing performance between waveform hollow steel pipe.
As preferably, containing reinforcing cage in described concrete, the inner side of reinforcing cage arranges the fixing reinforcing bar or anti-eccentric guide rail reinforcing bar that are connected with waveform hollow steel pipe.On the whole in order to prevent waveform hollow steel pipe eccentric, fixing reinforcing bar is horizontal bar dowel, is that waveform hollow steel pipe and reinforcing cage adopt when putting into simultaneously.Anti-eccentric guide rail reinforcing bar, be the longitudinal reinforcement up and down be first welded on reinforcing cage, 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 steel pipe services aperture, and concrete pile is provided with the concrete services aperture communicated with steel pipe services aperture.
As preferably, be provided with in described steel pipe services aperture and the concrete services aperture that communicates with it and extend outside concrete pile, the branch pile contacted with the earth, the angle a of the outer wall of branch pile and concrete pile is less than or equal to 90 °.Branch pile is steel pipe, steel column or stub.
As preferably, arrange the burr outside described steel pipe services aperture and the concrete services aperture that communicates with it, the burr is concrete.
As preferably, the angle a of described branch pile and the outer wall of concrete pile is less than or equal to 90 °.Angle a is that the outer wall of branch pile and concrete pile is along the angle going deep into the direction in soil.
As preferably, in described concrete pile, be furnished with reinforcing cage.
Waveform hollow steel pipe friction pile construction method, comprise above-mentioned waveform hollow steel pipe friction pile, step is as follows:
A, reinforcing cage and waveform hollow steel pipe are put into the stake holes of accomplishing fluently simultaneously; Or first put reinforcing cage and put waveform hollow steel pipe again;
B, between waveform hollow steel pipe and stake holes, place reinforcing cage and concreting, generate concrete pile.
As preferably, also comprise c, after concrete pile solidifies, pump the water in waveform hollow steel pipe, and beat through hole in waveform hollow steel pipe, through hole is communicated with waveform hollow steel pipe and the earth;
D, in through hole, squeeze into branch pile.
As preferably, also comprise c, after concrete pile solidifies, pump the water in waveform hollow steel pipe, and beat through hole in waveform hollow steel pipe, through hole is communicated with waveform hollow steel pipe and the earth;
D, by through hole high pressure pouring concrete formed 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, increase steel pipe and concrete contact area, thus improve steel pipe and concrete frictional force, be hollow in steel pipe, decrease the deadweight of concrete consumption and pile body, increase the supporting capacity of pile body, on the other hand, can by entering in stake, the modes such as layout branch pile, the burr of carrying out carry out secondary maintenance and reinforcing to pile body.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of waveform hollow steel pipe in the present invention.
Wherein 1-waveform hollow steel pipe, 2-concrete pile, 3-branch pile, 4-lower manhole, 5-greatly, 6-burr, 11-steel pipe services aperture, 21-concrete services aperture.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 to accompanying drawing 2 and detailed description of the invention, the present invention is described in further detail:
Embodiment 1
Waveform hollow steel pipe friction pile, as shown in Figure 1, 2, comprises waveform hollow steel pipe 1, and the longitudinal cross-section of described waveform hollow steel pipe 1 tube wall is waveform, arranges concrete pile 2 outside waveform hollow steel pipe 1.The top of waveform hollow steel pipe friction pile is also provided with lower manhole 4.
Waveform hollow steel pipe 1 is multisection type splicing, and the socket of splicing port employing concentric reducer, adopts bolt or electrical pads admittedly after socket.Joining Technology requires very quick, succinct connection herein, and this connection can also be overlapped in seam at concentric reducer and be added sealing ring, 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.
Being provided with in steel pipe services aperture 11 and the concrete services aperture 21 that communicates with it extends outside concrete pile 2, and the branch pile 3 contact with the earth 5, the angle a of the outer wall of branch pile 3 and concrete pile 2 equals 60 °.Branch pile is steel pipe.
Branch pile 3 equals 90 ° with the angle a of the outer wall of concrete pile 2.Reinforcing cage is furnished with in concrete pile 2.Be provided with in steel pipe services aperture 11 and concrete services aperture 21 and extend concrete pile 2 outer wall, the branch pile 3 contacted with the earth 5.Branch pile 3 is for being horizontally disposed with.When branch pile 3 is horizontally disposed with, the length that the branch pile 3 of equal length contacts with the soil outside concrete pile 2 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 entirety.
Waveform hollow steel pipe friction pile construction method, comprise above-mentioned waveform hollow steel pipe friction pile, step is as follows:
A, reinforcing cage and waveform hollow steel pipe 1 are put into the stake holes of accomplishing fluently simultaneously;
B, between waveform hollow steel pipe 1 and stake holes, place reinforcing cage and 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 in waveform hollow steel pipe 1, through hole is communicated with waveform hollow steel pipe 1 and the earth;
D, in through hole, squeeze into branch pile 3.
Embodiment 2
Waveform hollow steel pipe friction pile, as shown in Figure 1, 2, comprises waveform hollow steel pipe 1, and the longitudinal cross-section of described waveform hollow steel pipe 1 tube wall is waveform, arranges concrete pile 2 outside 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.Being provided with in steel pipe services aperture 11 and the concrete services aperture 21 that communicates with it extends outside concrete pile 2, and the branch pile 3 contact with the earth 5, the angle a of the outer wall of branch pile 3 and concrete pile 2 is 80 °.Branch pile is stub.
Outside steel pipe services aperture 11 and the concrete services aperture 21 that communicates with it, the burr 6 is set.The burr 6 is concrete.Branch pile 3 is 60 ° with the angle of the outer wall of concrete pile 2.
Reinforcing cage is furnished with in concrete pile 2.Containing reinforcing cage in described concrete, the inner side of reinforcing cage arranges the fixing reinforcing bar or anti-eccentric guide rail reinforcing bar that are connected with waveform hollow steel pipe 1.On the whole in order to prevent waveform hollow steel pipe eccentric, fixing reinforcing bar is horizontal bar dowel, is that waveform hollow steel pipe and reinforcing cage adopt when putting into simultaneously.Anti-eccentric guide rail reinforcing bar, be the longitudinal reinforcement up and down be first welded on reinforcing cage, quantity is more than three roads, and this technique hollow steel pipe is put into after being.
Waveform hollow steel pipe friction pile construction method, comprise above-mentioned waveform hollow steel pipe friction pile, step is as follows:
A, in the stake holes of accomplishing fluently, first put reinforcing cage put waveform hollow steel pipe 1 again;
B, between waveform hollow steel pipe 1 and stake holes, place reinforcing cage and 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 in waveform hollow steel pipe 1, through hole is communicated with waveform hollow steel pipe 1 and the earth;
D, in through hole, squeeze into branch pile 3.Branch pile 3 one end be arranged in concrete pile 2 is upper end, and one end that branch pile 3 is arranged in the earth 5 is lower end, and the distance between upper end and ground is less than the distance between lower end and ground.
Branch pile 3 is inserted by the steel pipe services aperture 11 on waveform hollow steel pipe 1, enter in soil through the concrete services aperture 21 on concrete pile 2, because concrete services aperture 21 is for tiltedly to establish, therefore, after branch pile 5 is inserted, the upper end of branch pile 5 namely with concrete pile 2 link from earth's surface close together, the lower end of branch pile 5 is namely distant from earth's surface with soil contact jaw.When friction pile occurs, when the hard object existed is as stone or rock, friction pile can be blocked firmly in the earth of the branch pile 5 of tiltedly establishing near running into, stop friction pile to continue to sink.
Meanwhile, 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; The burr 6 is formed by through hole high pressure pouring concrete.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done 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 (4)
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, arranges concrete pile (2) outside waveform hollow steel pipe (1); Containing reinforcing cage in described concrete, the inner side of reinforcing cage arranges the fixing reinforcing bar or anti-eccentric guide rail reinforcing bar that are connected with waveform hollow steel pipe (1); 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); Be provided with in described steel pipe services aperture (11) and the concrete services aperture (21) that communicates with it and extend concrete pile (2) outward, the branch pile (3) contacted with the earth (5), branch pile (3) is less than or equal to 90 ° with the angle a of the outer wall of concrete pile (2).
2. waveform hollow steel pipe friction pile according to claim 1, is characterized in that: described waveform hollow steel pipe (1) is multisection type splicing, and the socket of splicing port employing concentric reducer, adopts bolt or electrical pads admittedly after socket.
3. waveform hollow steel pipe friction pile according to claim 1, it is characterized in that: arrange the burr (6) outside described steel pipe services aperture (11) and the concrete services aperture (21) that communicates with it, the burr (6) is concrete.
4. waveform hollow steel pipe friction pile construction method, comprises waveform hollow steel pipe friction pile according to claim 1, it is characterized in that: comprise the following steps:
A, reinforcing cage and waveform hollow steel pipe (1) are put into the stake holes of accomplishing fluently simultaneously; Or first put reinforcing cage and put waveform hollow steel pipe (1) again; When waveform hollow steel pipe (1) and reinforcing cage is put into simultaneously time, the inner side of reinforcing cage arranges the fixing reinforcing bar be connected with waveform hollow steel pipe (1); Put reinforcing cage in the ban when putting waveform hollow steel pipe (1) again, the inner side of reinforcing cage arranges anti-eccentric guide rail reinforcing bar, and anti-eccentric guide rail reinforcing bar is first to be welded on reinforcing cage and quantity is the longitudinal reinforcement up and down in more than three roads;
B, between waveform hollow steel pipe (1) and stake holes 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 in waveform hollow steel pipe (1), through hole is communicated with waveform hollow steel pipe (1) and the earth;
D, in through hole, squeeze into branch pile (3);
Or also comprise c, 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;
D, by through hole high pressure pouring concrete formed the burr (6).
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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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| CN103485333B true CN103485333B (en) | 2016-02-24 |
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| CN106836260B (en) * | 2016-12-16 | 2018-09-11 | 兰州理工大学 | A kind of crawler belt steel-pipe pile and construction method reducing negative friction |
| 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 |
| CN107816053A (en) * | 2017-11-27 | 2018-03-20 | 佛山科学技术学院 | A kind of pile structure of civil engineering |
| 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 |
| 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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Effective date of registration: 20141124 Address after: 314422, No. 168-2, village, town, Hangzhou, Xiaoshan District, Zhejiang Applicant after: Zhejiang CTB Corrugated Steel Web Co., Ltd. Address before: Hangzhou City, Zhejiang province 311215 Xiaoshan economic and Technological Development Zone, North Building 2 room 1711 Ning'an Applicant before: Hangzhou Boshu Civil Engineering Technology Co., Ltd. |
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