CN104594339A - Construction method for concrete pile - Google Patents
Construction method for concrete pile Download PDFInfo
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- CN104594339A CN104594339A CN201410721600.7A CN201410721600A CN104594339A CN 104594339 A CN104594339 A CN 104594339A CN 201410721600 A CN201410721600 A CN 201410721600A CN 104594339 A CN104594339 A CN 104594339A
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Abstract
The invention provides a construction method for a concrete pile. The operations of pore-forming, wall protecting, soil-squeezing, diameter expanding and pile construction are completed at one time, a formed special-shaped pile body can significantly improve the bearing capacity of unit volume concrete, and the improvement of work efficiency and the reduction of the cost are achieved. The construction method comprises the steps that an outer tube which is provided with an expanding support at the bottom end of the outer tube and an inner tube sink to a designed depth simultaneously; the expanding support expands outward to squeeze the surrounding soil to form a diameter-expanding pile hole; the outer tube and the inner tube are lifted up simultaneously while concrete mixtures are transported into the internal tube of the inner tube and filled into the diameter-expanding pile hole; the operations of transporting the concrete mixtures and lifting up the outer tube and the inner tube are conducted continuously till the outer tube and the inner tube are lifted out of the foundation surface simultaneously, a concrete pile body with a larger diameter is formed in the foundations, and the cross section of the concrete pile body is shaped like a special shape or a circle or a square.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to the construction technology of stake.
Background technology
In the basement process of building, castinplace pile is conventional base form, it improves the bearing capacity of stake mainly through pile body side friction and part end resistance, therefore the higher building of requirement for bearing capacity is being run into, or during the situation that in ground, soft layer is darker, by strengthening the mode of pile body diameter and pile body length, building demand must be met, therefore significantly increasing construction cost and construction period.Therefore, people need a kind of lower-cost, stake that still can meet the demand.
A kind of novel support disk pile is developed again in recent years on traditional bored concrete pile foundation, its know-why is by arranging force bearing disk or load branch raising bearing capacity of pile tip within the scope of limited pile body soil layer, namely by squeeze equipment at the squeezed formation of appropriate depth expanding disk space with one heart, reach the object that improves bearing capacity ofconcreting thus save cost or reduction of erection time.But the damaged condition of plant equipment often can be there is in this pile-type in construction, its reason is, when squeeze equipment forms expanding disk space by rotation mode, want the squeezed requirement of compact earth to the rigidity of squeeze equipment and power of motor all very high, therefore the spoilage of construction equipment is exacerbated, particularly in gravelly soil, sand etc. comparatively hardpan, be difficult to pile, cause the increase of cost and the prolongation of duration.
Summary of the invention
The present invention proposes to solve the above problems, object is the construction method providing a kind of concrete pile, disposablely complete that pore-forming, retaining wall, soil compaction are expanding, the operation of pile body construction, the special pile body formed can significantly improve the concrete bearing capacity of folk prescription, realizes the raising of work efficiency and the saving of cost.
To achieve these goals, the construction method of concrete pile of the present invention comprises the steps:
1) by bottom with extending out the outer tube of eyelid retractor and interior pipe simultaneously to being lowered into, until projected depth;
2) will extend out the outside diastole of eyelid retractor, extruding surrounding soil forms expanding stake holes;
3) upwards promote outer tube and interior pipe on one side, delivering concrete mix in the internal pipeline of inside pipe, concrete batching system injects expanding stake holes from the discharging opening of interior pipe bottom simultaneously;
4) continue to carry out above-mentioned steps 3) delivering concrete mix and upwards promote outer tube and interior pipe operation, until outer tube and interior pipe are proposed foundation surface simultaneously, in ground, form the concrete pile body that diameter is larger, the cross section of concrete pile body is special-shaped or circular or square.
In the construction method of above-mentioned concrete pile, above-mentioned steps 1) in, the above-mentioned eyelid retractor that extends out is made up of the telescopic support arm of 2 ~ 10 umbrella frame shapes, support arm is connected by pivot pin with underarm by upper arm, and upper arm upper end is connected with outer tube bottom by pivot pin, and underarm lower end is connected with interior pipe bottom by pivot pin, to when being lowered into outer tube and interior pipe, the support arm extending out eyelid retractor inwardly closes up, and when upwards promoting outer tube and interior pipe, extends out the outside diastole of support arm of eyelid retractor.
In the construction method of above-mentioned concrete pile, above-mentioned steps 1) in, above-mentioned bottom, with extending out the outer tube of eyelid retractor and interior pipe, can adopt bottom to substitute with the hollow tube of multiple hydraulic supporting brace or supporting disk.
In the construction method of above-mentioned concrete pile, above-mentioned steps 1) in, the above-mentioned lower end extending out eyelid retractor is provided with drill bit or impacts cone, and drill bit or impact cone are provided with discharging opening, and discharging opening is connected with the internal pipeline of interior pipe.
In the construction method of above-mentioned concrete pile, above-mentioned steps 1) in, above-mentioned by outer tube and interior pipe simultaneously to the mode be lowered into, be realized by one or several methods combined of rotary drilling or hammering or static pressure or vibration.
In the construction method of above-mentioned concrete pile, above-mentioned steps 2) in, above-mentionedly will extend out the outside diastole of eyelid retractor, extruding surrounding soil forms expanding stake holes, it extends out the mode of the outside diastole of eyelid retractor, comprise the upper and lower displacement by controlling outer tube and interior pipe, namely fix outer tube carries interior pipe or fixing in pipe press down outer tube, also comprise the hydraulic means by being arranged on outer tube or interior pipe, the outside arcuately diastole of support arm extending out eyelid retractor is opened, thus extruding surrounding soil form expanding stake holes.
In the construction method of above-mentioned concrete pile, above-mentioned steps 3) in, upwards promoting the mode of outer tube and interior pipe while of above-mentioned, is that the oil thread rope stretched out by hoist engine is worn and to be pulled out on after assembly pulley or realize with top on hydraulic top or in one or several modes combined that vibration is pulled out.
In the construction method of above-mentioned concrete pile, above-mentioned steps 3) in, delivering concrete mix in the internal pipeline of above-mentioned inside pipe, concrete batching system is the compound with one or more blunges in cement or rubble or sand or flyash or coarse-fine aggregate.
In the construction method of above-mentioned concrete pile, above-mentioned steps 4) in, the cross section of above-mentioned concrete pile body is special-shaped or circular or square, the shape of the cross section of its concrete pile body, be that quantity and the change that extends out shape of the support arm by extending out eyelid retractor realizes adjusting, profiled cross-section comprises gear shape or cross or polygon or multi-corner star-shape.
In the construction method of above-mentioned concrete pile, above-mentioned steps 4) in, above-mentionedly in ground, form the larger concrete pile of diameter after one's death, anti-plug reinforcing cage in concrete pile body.
The construction equipment of above-mentioned concrete pile and the characteristics and advantages of construction method thereof are:
1. the fast efficiency of speed of application is high: the pile body pore-forming first carrying out minor diameter, major diameter pile body is formed after pile body is expanding, compare the conventional engineering methods such as the castinplace pile in equal stake footpath, speed of application more than 40% can be improved, even if in the soil layer that sandy soils, boulder bed etc. are harder, also rapidly and efficiently construction can be completed.
2. construction technology is simple and easy to control: only need by controlling the angle extending out the outside diastole of the support arm of eyelid retractor, namely the size that adjustable pile body is expanding, only need adjust control extend out the quantity of the support arm of eyelid retractor and extend out shape, pile body shape of cross section can be changed, also pile body week lateral area is just changed, to meet the upper load requirement of different geological conditions and form of structure.
3. bearing capacity ofconcreting is significantly improved, remarkable in economical benefits: the cross section formed is the abnormity concrete pile bodies such as gear shape, cross, multi-corner star-shape, polygon, the cast-in-place pile type long with stake with equal stake footpath is compared, concrete use amount reduces by more than 25%, the all lateral areas of stake increase more than 20%, and comprehensive bearing capacity ofconcreting improves more than 25%.
4. construction quality is high, continuity is strong: whole formation of pile is soil compaction method, pile peripheral earth is all squeezed into bottom stake holes with on hole wall, play and reinforce compacted effect, avoid hole wall collapse and undergauge, and pore-forming, retaining wall, soil compaction are expanding, whole operations of pile once complete, the fast efficiency of speed is high.
5. applied widely: all applicable under the various geological conditionss such as weak soil, hard formation, interlayer, water content height, all applicable in pile foundation construction and complex ground treatment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of the construction method of concrete pile of the present invention;
Fig. 2 is the schematic diagram of another embodiment of the construction method of concrete pile of the present invention;
The schematic diagram of Fig. 3 to be cross section that the construction method of concrete pile of the present invention is formed be concrete pile body of gear shape;
The schematic diagram of Fig. 4 to be cross section that the construction method of concrete pile of the present invention is formed be criss-cross concrete pile body;
The schematic diagram of Fig. 5 to be cross section that the construction method of concrete pile of the present invention is formed be polygonal concrete pile body;
The schematic diagram of Fig. 6 to be cross section that the construction method of concrete pile of the present invention is formed be concrete pile body of multi-corner star-shape.
Detailed description of the invention
Fig. 1 is the schematic diagram of an embodiment of the construction method of concrete pile of the present invention, as shown in a in Fig. 1, the bottom of outer tube 1 and interior pipe 2 is with extending out eyelid retractor 3, extend out eyelid retractor 3 to be made up of telescopic support arm, extend out the lower end of eyelid retractor 3 with augers 4, augers 4 is provided with discharging opening 5; Then, as shown in b in Fig. 1, simultaneously spun outer tube 1 and interior pipe 2, under the drive of augers 4, makes bottom with extending out the outer tube 1 of eyelid retractor 3 and interior pipe 2 simultaneously to being lowered into, until projected depth; Then, as shown in c in Fig. 1, while fixing outer tube 1, upwards pipe 2 in small elevation, make to extend out eyelid retractor 3 outwards diastole, extruding surrounding soil forms expanding stake holes; Then, as shown in d in Fig. 1, upwards promote outer tube 1 and interior pipe 2 simultaneously, under the effect extending out eyelid retractor 3 extrusion soil, form expanding stake holes, delivering concrete mix 6 in the internal pipeline of the inside pipe 2 in one side, concrete batching system 6 injects expanding stake holes from the discharging opening 5 of interior pipe 2 bottom; Finally, as shown in e in Fig. 1, continue to carry out delivering concrete mix 6 and upwards promote outer tube 1 and interior 2 pipe operations, until outer tube 1 and interior pipe 2 are proposed foundation surface simultaneously, in ground, form the concrete pile body that diameter is larger.
Fig. 2 is the schematic diagram of an embodiment of the construction method of concrete pile of the present invention, as shown in a in Fig. 2, the bottom of outer tube 1 and interior pipe 2, with extending out eyelid retractor 3, extends out eyelid retractor 3 and is made up of telescopic support arm, extends out the lower end closed of eyelid retractor and is provided with discharging opening 5; Then, as shown in b in Fig. 2, adopting weight or diesel hammer impact outer tube 1 and interior pipe 2, making bottom with extending out the outer tube 1 of eyelid retractor 3 and interior pipe 2 simultaneously to being lowered into, until projected depth; Then, as shown in c in Fig. 2, in fixing while pipe 2, slightly sink to outer tube 1 downwards, make to extend out eyelid retractor 3 outwards diastole, extruding surrounding soil forms expanding stake holes; Then, as shown in d in Fig. 2, upwards promote outer tube 1 and interior pipe 2 simultaneously, under the effect extending out eyelid retractor 3 extrusion soil, form expanding stake holes, delivering concrete mix 6 in the internal pipeline of the inside pipe 2 in one side, concrete batching system 6 injects expanding stake holes from the discharging opening 5 of interior pipe 2 bottom; Finally, as shown in e in Fig. 2, continue to carry out delivering concrete mix 6 and upwards promote outer tube 1 and interior 2 pipe operations, until outer tube 1 and interior pipe 2 are proposed foundation surface simultaneously, in ground, form the concrete pile body that diameter is larger.
The schematic diagram of Fig. 3 to be cross section that the construction method of concrete pile of the present invention is formed be concrete pile body of gear shape.
The schematic diagram of Fig. 4 to be cross section that the construction method of concrete pile of the present invention is formed be criss-cross concrete pile body.
The schematic diagram of Fig. 5 to be cross section that the construction method of concrete pile of the present invention is formed be polygonal concrete pile body.
The schematic diagram of Fig. 6 to be cross section that the construction method of concrete pile of the present invention is formed be concrete pile body of multi-corner star-shape.
Claims (10)
1. a construction method for concrete pile, comprises the steps:
1) by bottom with extending out the outer tube of eyelid retractor and interior pipe simultaneously to being lowered into, until projected depth;
2) will extend out the outside diastole of eyelid retractor, extruding surrounding soil forms expanding stake holes;
3) upwards promote outer tube and interior pipe on one side, delivering concrete mix in the internal pipeline of inside pipe, concrete batching system injects expanding stake holes from the discharging opening of interior pipe bottom simultaneously;
4) continue to carry out above-mentioned steps 3) delivering concrete mix and upwards promote outer tube and interior pipe operation, until outer tube and interior pipe are proposed foundation surface simultaneously, in ground, form the concrete pile body that diameter is larger, the cross section of concrete pile body is special-shaped or circular or square.
2. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 1) in, the above-mentioned eyelid retractor that extends out is made up of the telescopic support arm of 2 ~ 10 umbrella frame shapes, support arm is connected by pivot pin with underarm by upper arm, upper arm upper end is connected with outer tube bottom by pivot pin, underarm lower end is connected with interior pipe bottom by pivot pin, to when being lowered into outer tube and interior pipe, the support arm extending out eyelid retractor inwardly closes up, when upwards promoting outer tube and interior pipe, extend out the outside diastole of support arm of eyelid retractor.
3. the construction method of concrete pile according to claim 1, is characterized in that above-mentioned steps 1) in, above-mentioned bottom, with extending out the outer tube of eyelid retractor and interior pipe, can adopt bottom to substitute with the hollow tube of multiple hydraulic supporting brace or supporting disk.
4. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 1) in, the above-mentioned lower end extending out eyelid retractor is provided with drill bit or impacts cone, and drill bit or impact cone are provided with discharging opening, and discharging opening is connected with the internal pipeline of interior pipe.
5. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 1) in, above-mentioned by outer tube and interior pipe simultaneously to the mode be lowered into, be realized by one or several methods combined of rotary drilling or hammering or static pressure or vibration.
6. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 2) in, above-mentionedly will extend out the outside diastole of eyelid retractor, extruding surrounding soil forms expanding stake holes, it extends out the mode of the outside diastole of eyelid retractor, comprise the upper and lower displacement by controlling outer tube and interior pipe, namely fix outer tube carries interior pipe or fixing in pipe press down outer tube, also comprise the hydraulic means by being arranged on outer tube or interior pipe, the outside arcuately diastole of support arm extending out eyelid retractor is opened, thus extruding surrounding soil form expanding stake holes.
7. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 3) in, upwards promoting the mode of outer tube and interior pipe while of above-mentioned, is that the oil thread rope stretched out by hoist engine is worn and to be pulled out on after assembly pulley or realize with top on hydraulic top or in one or several modes combined that vibration is pulled out.
8. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 3) in, delivering concrete mix in the internal pipeline of above-mentioned inside pipe, concrete batching system is the compound with one or more blunges in cement or rubble or sand or flyash or coarse-fine aggregate.
9. the construction method of concrete pile according to claim 1, it is characterized in that above-mentioned steps 4) in, the cross section of above-mentioned concrete pile body is special-shaped or circular or square, the shape of the cross section of its concrete pile body, be that quantity and the change that extends out shape of the support arm by extending out eyelid retractor realizes adjusting, profiled cross-section comprises gear shape or cross or polygon or multi-corner star-shape.
10. the construction method of concrete pile according to claim 1, is characterized in that above-mentioned steps 4) in, above-mentionedly in ground, form the larger concrete pile of diameter after one's death, anti-plug reinforcing cage in concrete pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410721600.7A CN104594339B (en) | 2014-12-03 | 2014-12-03 | The construction method of concrete-pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410721600.7A CN104594339B (en) | 2014-12-03 | 2014-12-03 | The construction method of concrete-pile |
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| CN104594339A true CN104594339A (en) | 2015-05-06 |
| CN104594339B CN104594339B (en) | 2016-06-29 |
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| CN201410721600.7A Active CN104594339B (en) | 2014-12-03 | 2014-12-03 | The construction method of concrete-pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988910A (en) * | 2015-06-24 | 2015-10-21 | 南京路鼎搅拌桩特种技术有限公司 | Reducing swing-injected agitating pile |
| CN106988304A (en) * | 2017-05-18 | 2017-07-28 | 华北理工大学 | Novel steel tube concrete connecting device and its construction method |
| CN112482369A (en) * | 2020-11-24 | 2021-03-12 | 河海大学 | Static pressure type back support screw pile based on bionics and construction method thereof |
| CN114541361A (en) * | 2022-04-02 | 2022-05-27 | 山东高速工程建设集团有限公司 | Bidirectional stirring device and composite foundation construction method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381669Y (en) * | 1999-07-19 | 2000-06-07 | 黄运飞 | Boring bit for vibrating, jetting, extruding and boring sectional bored concrete piles |
| CN1441146A (en) * | 2003-03-24 | 2003-09-10 | 周书魁 | Integral pile hole drilling and expanding apparatus |
| CN1704533A (en) * | 2004-05-28 | 2005-12-07 | 刘润郊 | Enlarging in hole and pile forming method by boring and pumping big flow concrete, and pile hole enlarging device |
| CN1800509A (en) * | 2005-01-05 | 2006-07-12 | 北京中阔科技有限责任公司 | Device for knobby pushing and expanding spiral immersed tube stake and its engineering method |
| CN201172817Y (en) * | 2008-04-03 | 2008-12-31 | 祁春伟 | Construction equipment of screw-enlarging support disk filling pile |
| CN202031082U (en) * | 2011-04-12 | 2011-11-09 | 中国建筑第七工程局有限公司 | Branch disk pile expanding tool |
| CN202055239U (en) * | 2011-04-12 | 2011-11-30 | 中国建筑第七工程局有限公司 | Extruding-expanding rotary cutting device for branch plate pile |
| CN102561326A (en) * | 2012-03-19 | 2012-07-11 | 董兰田 | Three-branch single-cylinder hydraulic bidirectional expansion-extrusion device |
-
2014
- 2014-12-03 CN CN201410721600.7A patent/CN104594339B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2381669Y (en) * | 1999-07-19 | 2000-06-07 | 黄运飞 | Boring bit for vibrating, jetting, extruding and boring sectional bored concrete piles |
| CN1441146A (en) * | 2003-03-24 | 2003-09-10 | 周书魁 | Integral pile hole drilling and expanding apparatus |
| CN1704533A (en) * | 2004-05-28 | 2005-12-07 | 刘润郊 | Enlarging in hole and pile forming method by boring and pumping big flow concrete, and pile hole enlarging device |
| CN1800509A (en) * | 2005-01-05 | 2006-07-12 | 北京中阔科技有限责任公司 | Device for knobby pushing and expanding spiral immersed tube stake and its engineering method |
| CN201172817Y (en) * | 2008-04-03 | 2008-12-31 | 祁春伟 | Construction equipment of screw-enlarging support disk filling pile |
| CN202031082U (en) * | 2011-04-12 | 2011-11-09 | 中国建筑第七工程局有限公司 | Branch disk pile expanding tool |
| CN202055239U (en) * | 2011-04-12 | 2011-11-30 | 中国建筑第七工程局有限公司 | Extruding-expanding rotary cutting device for branch plate pile |
| CN102561326A (en) * | 2012-03-19 | 2012-07-11 | 董兰田 | Three-branch single-cylinder hydraulic bidirectional expansion-extrusion device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988910A (en) * | 2015-06-24 | 2015-10-21 | 南京路鼎搅拌桩特种技术有限公司 | Reducing swing-injected agitating pile |
| CN106988304A (en) * | 2017-05-18 | 2017-07-28 | 华北理工大学 | Novel steel tube concrete connecting device and its construction method |
| CN106988304B (en) * | 2017-05-18 | 2019-03-12 | 华北理工大学 | Novel steel tube concrete connecting device and its construction method |
| CN112482369A (en) * | 2020-11-24 | 2021-03-12 | 河海大学 | Static pressure type back support screw pile based on bionics and construction method thereof |
| CN112482369B (en) * | 2020-11-24 | 2022-01-28 | 河海大学 | Static pressure type back support screw pile based on bionics and construction method thereof |
| CN114541361A (en) * | 2022-04-02 | 2022-05-27 | 山东高速工程建设集团有限公司 | Bidirectional stirring device and composite foundation construction method |
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| CN104594339B (en) | 2016-06-29 |
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Effective date of registration: 20170906 Address after: 102218, Beijing, Changping District East small town Taiping homes, building 31 Patentee after: BEIJING PUISSANT GEOTECHNICAL ENGINEERING CO., LTD. Address before: 102218 Beijing city Changping District East Town Taiping home building No. 31 Beijing possente Geotechnical Engineering Co. Ltd. Patentee before: Wang Jizhong |