CN102888841A - End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof - Google Patents
End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof Download PDFInfo
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- CN102888841A CN102888841A CN2012104115147A CN201210411514A CN102888841A CN 102888841 A CN102888841 A CN 102888841A CN 2012104115147 A CN2012104115147 A CN 2012104115147A CN 201210411514 A CN201210411514 A CN 201210411514A CN 102888841 A CN102888841 A CN 102888841A
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Abstract
The invention relates to an end part thread five-pointed-star-shaped variable-section prefabricated pipe pile and a construction method of the end part thread five-pointed-star-shaped variable-section prefabricated pipe pile. The pipe pile comprises two pipe sections; a first pipe section is provided with a pile point, a large-section section, a belt rib section and a top thread section; the large-section section is in a frustum shape and the surface is provided with a thread; the cross section of the belt rib section is in a five-pointed star shape and is the same in size; the surface of the belt rib section is provided with a belt rib; the cross section of the top thread section is circular; a second pipe section is in a reversed circular truncated cone shape and a circular truncated cone has a central through hole; the lower section of the central through hole is provided with an inner thread section; the surface of the circular truncated cone is provided with a ruler line and the cross section of the circular truncated cone is annular; and the integrated prefabricated pipe pile is formed by connecting the two pipe sections by screwing the top thread section into the inner thread section. The pipe pile has the advantages of simple structure and low manufacturing cost. The invention further provides the construction method of the pipe pile, and the construction method has the advantages of strong operability, high construction efficiency and good stability and safety of the pipe pile; and the construction method is suitable for the foundation construction of a large-size pile of a soft soil region and has obvious economic benefit.
Description
Technical field
The present invention relates to a kind of end thread five-pointed star deformation cross section prefabricated tubular pile and job practices thereof, described variable cross-section refers to the long axis direction variable cross-section of prefabricated tubular pile, belongs to the building pile foundation technical field.
Background technology
Along with the continuous expansion of China's city size, increasing high-rise building all faces a difficult problem of building at soft foundation.Pile foundation is mainly born the upper building load by frictional resistance and the end resistance of stake side because of it, itself has again larger globality and rigidity in addition, can bear very large vertical load, this be so that it can satisfy requirement for bearing capacity and the settlement request of high-rise building well, and becomes the main foundation form of High-rise Buildings Resting on Soft thing.Along with constantly applying of pile foundation, researchers find that stake week soil is fixed because of self, immersion saturated yielding, place are banketed, the degradation reason can make the sedimentation of its generation greater than pile body settlement under the ground preloading, pile top load, groundwater table, at this moment the stake side will produce negative friction, this frictional resistance has consisted of the part of pressure bearing pile load, reduce bearing capacity of pile, reduced the safety stock of pile strength, and may cause that the larger sedimentation of pile body drives superstructure thing uneven subsidence thereupon, when serious even can cause foundation failure.Therefore, research and develop a kind of economy, effectively cut down the novel pile foundation of negative friction, seem particularly urgent.
Summary of the invention
The technical problem to be solved in the present invention is: provides a kind of and can effectively reduce negative friction simultaneously and improve stake side positive friction, and more economical end thread five-pointed star deformation cross section prefabricated tubular pile and job practices thereof.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: a kind of end thread five-pointed star deformation cross section prefabricated tubular pile is provided, comprise first segment tube coupling and second section tube coupling, described first segment tube coupling is provided with pile top, heavy in section section, band rib section and screw top section from top to bottom, the heavy in section section is taper type, there is screw thread on the surface, cross section with rib section is five-pointed star shape and equal and opposite in direction, has with ribbing with the surface of rib section; Screw top section cross section is circular; The second section tube coupling is the rounding taper type, and frustum has central through hole, and the hypomere of central through hole is provided with internal thread segment, and the frustum smooth surface is provided with scale line, and the frustum cross section is annular; The internal thread segment that screw top section by the first segment tube coupling screws in the second section tube coupling connects into complete prefabricated tubular pile with two tube couplings.
The present invention also provides the job practices of using described a kind of end thread five-pointed star deformation cross section prefabricated tubular pile, may further comprise the steps:
(1) smooth location and pile press is in place;
(2) the described end thread five-pointed star deformation of lifting cross section prefabricated tubular pile: with crane the first segment tube coupling is worked first winching in the piling case;
(3) be pressed into the first segment tube coupling: stake is pressed into underground with the piling hydraulic cylinder;
(4) pile extension: predetermined being pressed into carried out pile extension when first segment tube coupling to top is exposed at the height of the nearly lm in ground, lifting second section tube coupling, and adjust the up and down center complete matching of two tube couplings, it is in place to rotate the second tube coupling with the pipe clamp instrument, makes first segment tube coupling and second section tube coupling connect into complete prefabricated tubular pile;
(5) be pressed into the second section tube coupling: be pressed into the second section tube coupling underground with the piling hydraulic cylinder;
(6) inspect for acceptance: check errorless after, mobile pile press is finished the prefabricated tubular pile construction of end thread five-pointed star deformation cross section to new stake position.
End thread five-pointed star deformation cross section prefabricated tubular pile of the present invention and job practices thereof compared with prior art have following advantage:
1) because the band rib section cross section of the first segment tube coupling of pile tube of the present invention is five-pointed star shape, changed the structure form of conventional piles basis section, improved significantly specific area, obviously improved stake side positive friction, pile tube the second tube coupling of the present invention is the rounding taper type, can effectively reduce the impact of negative friction.
2) pile tube of the present invention is compared with the prefabricated five-pointed star shape of uniform section reinforced concrete pile, because tubular pile body integral body is tapered, is adopting under the same immersed tube mode, and it is darker that pile tube of the present invention is processed the degree of depth.
3) pile tube of the present invention is compared with the taper expanded bore pile, the screw thread of heavy in section section surface setting has changed the pattern of stake with soil body interaction, stake has consisted of the mechanical type interlock with Soil Interface, further strengthen firm performance, unsinkability energy and the anti-pulling performance of pile foundation, effectively improved stake side positive friction, pile tube of the present invention can be replaced the taper expanded bore pile and expand end operation, and it is simpler to construct.
4) because the band rib section cross-sectional area of pile tube the first tube coupling of the present invention is less than heavy in section section sectional area, but equal the width of heavy in section section cross section with the radial width of rib section, after pile body is pressed in the soil fully, must be by stake native filling of week with the recessed part between rib section with ribbing, adjusted like this distribution of forces between soil and the stake, pile tube of the present invention can enlarge markedly the bearing capacity of stake, and with the recessed design of rib section, more helps the thread segment pile tube to be pressed in the soil.
5) stake of the present invention type can be brought into play simultaneously the advantage of tapered pile at the bottom of the prefabricated expansion, the stake of five-pointed star shape, half-thread stake and remedy separately deficiency: improved the unit materials rate of utilization of strength.
The advantages such as 6) pile tube of the present invention has simple in structurely, and manufacturing cost is lower, and specific area is large, and stake side positive friction is high, and the bearing capacity of single pile is large.The present invention has improved the bearing capacity of pile tube to a greater degree with the means of economy.The pipe pile construction method technique that the present invention proposes is simple, workable, and efficiency of construction is high, and the stability of pile tube and safety are good, and can improve to a greater degree the unit materials rate of utilization of strength, and have eliminated the impact of negative friction on pile foundation.
7) pile tube of the present invention and job practices thereof can be widely used in the construction of soft clay area large pile foundation, and remarkable in economical benefits has a extensive future.
Description of drawings
Fig. 1 is the structural representation of end thread five-pointed star deformation of the present invention cross section prefabricated tubular pile.
Fig. 2 is the structural representation of first segment tube coupling of the present invention.
Fig. 3 is first segment tube coupling band rib section cross sectional representation.
Fig. 4 is the structural profile schematic diagram of second section tube coupling of the present invention.
Fig. 5 is for being positioned over first segment tube coupling of the present invention view in the pile press.
Fig. 6 is work progress schematic diagram of the present invention.
Among the above-mentioned figure: 1-pile top, 2-heavy in section section, 3-band rib section, 4-are with ribbing, 5-screw top section, 6-first segment tube coupling, 7-second section tube coupling, 8-scale line, 9-internal thread segment, 10 central through holes, 11-pile press, 12-crane, 13-piling case.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment 1: a kind of end thread five-pointed star deformation of the present invention cross section prefabricated tubular pile, its structure comprises first segment tube coupling 6 and second section tube coupling 7 as shown in Figure 1.First segment tube coupling 6 structures such as Fig. 2 are provided with pile top 1, heavy in section section 2, band rib section 3 and screw top section 5 from top to bottom, and heavy in section section 2 is taper type, there is screw thread on the surface, cross section with rib section 3 is five-pointed star shape and equal and opposite in direction, such as Fig. 3, has with ribbing 4 with the surface of rib section; Screw top section 5 cross sections are circular.
Such as Fig. 4, second section tube coupling 7 is the rounding taper type, frustum has central through hole 10, the hypomere of central through hole is provided with internal thread segment 9, the frustum smooth surface is provided with scale line 8, and scale line selects bright-colored to indicate, and marks a row scale in the side on frustum surface as adopting red paint, precision is 100mm, so as in construction observation, record; The frustum cross section is annular; Internal thread segment 9 the screw top section 5 screw-in second section tube couplings 7 of first segment tube coupling 6 connects into complete prefabricated tubular pile with two tube couplings.
Embodiment 2: the job practices of a kind of end thread five-pointed star deformation cross section prefabricated tubular pile that the application embodiment of the invention 1 provides comprises following construction sequence:
(1) smooth location and static pressure pile press 11 is in place, as shown in Figure 5.
(2) lifting preformed pile: with crane 12 6 of first segment tube couplings are winched in the piling case 13, make center, pile top 1 perpendicular alignmnet stake position, shown in Fig. 6 a.
(3) be pressed into first segment tube coupling 6: the piling hydraulic cylinder with piling case 13 is pressed into first segment tube coupling 6 underground.Shown in Fig. 6 b, utilize the wedge cleaving reinforcement principle of chuck case, clamp pile, with the piling hydraulic cylinder stake is pressed into undergroundly, the piling stroke is 1m at every turn, with the piling hydraulic cylinder first segment tube coupling 6 is depressed into desired depth, shown in Fig. 6 b.
(4) pile extension: shown in Fig. 6 c, general predetermined being pressed into carried out pile extension when first segment tube coupling 6 to top is exposed at the height of the nearly lm in ground, lifting second section tube coupling 7, and adjust the up and down center complete matching of two tube couplings, in place with pipe clamp instrument rotation second section tube coupling 7, make first segment tube coupling 6 and second section tube coupling 7 connect into complete prefabricated tubular pile;
(5) be pressed into second section tube coupling 7: shown in Fig. 6 d, be pressed into second section tube coupling 7 underground with the piling hydraulic cylinder.Be provided with the scale line 8 for the observation pile sinking degree of depth in the pile body side of second section tube coupling 7, mark a row scale in the side of stake with red paint, so as in construction, to observe, record.Method of press-fitting is identical with step (3);
(6) inspect for acceptance: check errorless after, mobile pile press 11 is finished the prefabricated tubular pile construction of end thread five-pointed star deformation cross section to new stake position.
End thread five-pointed star deformation of the present invention cross section prefabricated tubular pile has simple in structure, the advantage that manufacturing cost is lower, and pipe pile construction method of the present invention, workable, efficiency of construction is high.Pile tube of the present invention and job practices thereof can be widely used in the construction of soft clay area large pile foundation, and remarkable in economical benefits has a extensive future.
Claims (2)
1. end thread five-pointed star deformation cross section prefabricated tubular pile, comprise first segment tube coupling and second section tube coupling, it is characterized in that: described first segment tube coupling is provided with pile top, heavy in section section, band rib section and screw top section from top to bottom, the heavy in section section is taper type, there is screw thread on the surface, cross section with rib section is five-pointed star shape and equal and opposite in direction, has with ribbing with the surface of rib section; Screw top section cross section is circular; The second section tube coupling is the rounding taper type, and frustum has central through hole, and the hypomere of central through hole is provided with internal thread segment, and the frustum smooth surface is provided with scale line, and the frustum cross section is annular; The internal thread segment that screw top section by the first segment tube coupling screws in the second section tube coupling connects into complete prefabricated tubular pile with two tube couplings.
2. application rights requires the job practices of 1 described a kind of end thread five-pointed star deformation cross section prefabricated tubular pile, it is characterized in that, may further comprise the steps:
(1) smooth location and pile press is in place;
(2) the described end thread five-pointed star deformation of lifting cross section prefabricated tubular pile: with crane the first segment tube coupling is worked first winching in the piling case;
(3) be pressed into the first segment tube coupling: stake is pressed into underground with the piling hydraulic cylinder;
(4) pile extension: predetermined being pressed into carried out pile extension when first segment tube coupling to top is exposed at the height of the nearly lm in ground, lifting second section tube coupling, and adjust the up and down center complete matching of two tube couplings, it is in place to rotate the second tube coupling with the pipe clamp instrument, makes first segment tube coupling and second section tube coupling connect into complete prefabricated tubular pile;
(5) be pressed into the second section tube coupling: be pressed into the second section tube coupling underground with the piling hydraulic cylinder;
(6) inspect for acceptance: check errorless after, mobile pile press is finished the prefabricated tubular pile construction of end thread five-pointed star deformation cross section to new stake position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104115147A CN102888841B (en) | 2012-10-25 | 2012-10-25 | End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104115147A CN102888841B (en) | 2012-10-25 | 2012-10-25 | End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof |
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| Publication Number | Publication Date |
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| CN102888841A true CN102888841A (en) | 2013-01-23 |
| CN102888841B CN102888841B (en) | 2013-12-11 |
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| CN2012104115147A Active CN102888841B (en) | 2012-10-25 | 2012-10-25 | End part thread five-pointed-star-shaped variable-section prefabricated pipe pile and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674835A (en) * | 2015-03-06 | 2015-06-03 | 江苏山海建设工程有限公司 | Automatic rapid helical tooth shape abutting structure of foundation pile |
| CN110468830A (en) * | 2019-09-10 | 2019-11-19 | 河海大学 | A kind of rapid anchor ingot stake and construction method |
| CN111350181A (en) * | 2020-03-26 | 2020-06-30 | 上海杰地建筑设计有限公司 | Precast concrete tubular pile only bearing anti-pulling effect |
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| US4585681A (en) * | 1983-06-03 | 1986-04-29 | Nippon Kokan Kk | Frost damage proofed pile |
| CN2177747Y (en) * | 1993-03-30 | 1994-09-21 | 管自立 | Prefabricated special X type square pile |
| JP2003027471A (en) * | 2001-07-18 | 2003-01-29 | Zengoro Ando | Foundation pile |
| CN102212993A (en) * | 2010-04-06 | 2011-10-12 | 盐城市双强管桩有限公司 | Pre-stressed reinforced concrete circular hollow pile with internal thread or internal groove and processing method thereof |
| CN102400459A (en) * | 2011-11-09 | 2012-04-04 | 河南理工大学 | Cast-in-place concrete hollow five-star shaped pile with large diameter and construction method and special device thereof |
| CN202298609U (en) * | 2011-10-14 | 2012-07-04 | 大连增益重工机械设备有限公司 | Stepped foundation auger pile |
-
2012
- 2012-10-25 CN CN2012104115147A patent/CN102888841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4585681A (en) * | 1983-06-03 | 1986-04-29 | Nippon Kokan Kk | Frost damage proofed pile |
| CN2177747Y (en) * | 1993-03-30 | 1994-09-21 | 管自立 | Prefabricated special X type square pile |
| JP2003027471A (en) * | 2001-07-18 | 2003-01-29 | Zengoro Ando | Foundation pile |
| CN102212993A (en) * | 2010-04-06 | 2011-10-12 | 盐城市双强管桩有限公司 | Pre-stressed reinforced concrete circular hollow pile with internal thread or internal groove and processing method thereof |
| CN202298609U (en) * | 2011-10-14 | 2012-07-04 | 大连增益重工机械设备有限公司 | Stepped foundation auger pile |
| CN102400459A (en) * | 2011-11-09 | 2012-04-04 | 河南理工大学 | Cast-in-place concrete hollow five-star shaped pile with large diameter and construction method and special device thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104674835A (en) * | 2015-03-06 | 2015-06-03 | 江苏山海建设工程有限公司 | Automatic rapid helical tooth shape abutting structure of foundation pile |
| CN104674835B (en) * | 2015-03-06 | 2016-07-06 | 江苏山海新型建材股份有限公司 | The automatic rapid spiral thread form docking structure of foundation pile |
| CN110468830A (en) * | 2019-09-10 | 2019-11-19 | 河海大学 | A kind of rapid anchor ingot stake and construction method |
| CN111350181A (en) * | 2020-03-26 | 2020-06-30 | 上海杰地建筑设计有限公司 | Precast concrete tubular pile only bearing anti-pulling effect |
| CN111350181B (en) * | 2020-03-26 | 2021-06-22 | 上海杰地建筑设计有限公司 | Precast concrete tubular pile only bearing anti-pulling effect |
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| CN102888841B (en) | 2013-12-11 |
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