CN104727309A - Construction technology of squeeze-in expanded-base pipe pile - Google Patents
Construction technology of squeeze-in expanded-base pipe pile Download PDFInfo
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- CN104727309A CN104727309A CN201510054942.2A CN201510054942A CN104727309A CN 104727309 A CN104727309 A CN 104727309A CN 201510054942 A CN201510054942 A CN 201510054942A CN 104727309 A CN104727309 A CN 104727309A
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Abstract
The invention discloses a construction technology of a squeeze-in expanded-base pipe pile and relates to a construction technology of a pile foundation. The construction technology includes the steps that first-time static pressure or hammering construction is performed on a pile body according to a normal process, piling is performed till the pile body reaches designed elevation, and then, a mandrel is inserted in the pile body; second-time piling or static pressure is performed on the pile body so that the bottom pile tip and the pile body can be separated from each other and downward expanding can be performed. After downward expanding is completed, an appropriate amount of concrete with expanding agents is poured into the pile body, the mandrel is inserted in the pile body again, and third-time piling or static pressure is performed on the pile body so that the concrete can be squeezed out of the bottom of the pile body and an expanded head can be formed. Through the construction technology, the poured expanded head has high compression bearing capacity and high uplift bearing capacity. Meanwhile, the concrete is poured after hammering or static pressure downward expanding, finally, squeezing is performed, and therefore the pile type is better in applicability, and the pile is applicable to a soft soil area and is also applicable to a hard soil layer area.
Description
Technical field
The present invention relates to a kind of construction technology of pile foundation, a kind of extruding type expands the construction technology of die bed pile tube specifically.
Background technology
Pile tube is a kind of comparatively economic pile-type.At present, pile tube large area use in engineering.Because pile tube is originally as preformed pile, existing pipe pile end cannot expand, thus affects the performance of bearing capacity.Existing pile tube is due to its immersed tube limited length, and its pile body length is shorter, and enlarged footing is difficult to utilize darker bearing stratum; Secondly pile concrete is owing to being filling in underground and by the impact of the factor such as tube drawing, soil compaction, pile body easily produces the quality problems such as necking down, broken pile, and its Compressive Bearing Capacity improves anti-pulling capacity again; Finally, the pile top major part of existing pile tube adopts rectangle pile top, and static pressure or hammering are constructed more difficult, are therefore necessary to improve.
In order to solve the problem, the application for a patent for invention (publication number is: CN1309209A) that denomination of invention is " a kind of construction method expanding end hollow pile " describes a kind of expansion die bed pile tube, lower expansion can be carried out to pipe pile end, but also there is following defect in it: 1. because the pile body inside of above-mentioned expansion die bed hollow pile does not have the structure that can put more energy into the concrete in pile body, thus the Compressive Bearing Capacity of above-mentioned expansion die bed hollow pile and anti-pulling capacity limited; 2. above-mentioned expansion die bed hollow pile is carrying out in the process of constructing, first in tubular pile body, add concrete, again static pressure or hammering are carried out to concrete, finally by mandrel, concrete is carried out extruding formation enlarged footing from hollow pile lower end, technique scheme is merely able to be adapted to soft clay area, can not construct in the area that soil layer is harder; 3. the pile top of above-mentioned expansion die bed hollow pile adopts rectangle pile top, and static pressure or hammering are constructed more difficult, are therefore necessary to improve.
Summary of the invention
The object of the invention is the weak point in order to overcome background technology, and provide a kind of extruding type to expand die bed tube pile construction technique.
To achieve these goals, technical scheme of the present invention is: extruding type expands die bed tube pile construction technique, it is characterized in that: it comprises following processing step, prepare the pile tube that some bottoms are taper pile top, the reinforcing cage with pile body hole sidewall contact is along the circumferential direction provided with in the pile body hole of pile tube, reinforcing cage is arranged in taper pile top, and described pile tube is made up of pile body and the taper pile top that is connected with pile body bottom; Step 2: destroy the bleeding cement bottom pile body with sander, makes the pile body hole sidewall of pile body expose fresh concrete surface, and the length of described bleeding cement is 0.8 ~ 1.5m; Step 3: static pressure or hammering construction are carried out, until suppress to design elevation by pile tube to pile tube by the construction technology of normal pile tube; Step 4: put into the mandrel that a diameter is less than reinforcing cage internal diameter in pile body hole, carries out static pressure or hammering construction to the mandrel in pile body hole, taper pile top is separated with pile body, and makes taper pile top move down 20 ~ 30cm; Step 5: pour into the concrete containing expansion agent in pile body hole, and make concrete top end face higher than the top end face of reinforcing cage, in described concrete, the weight percent content of expansion agent is 8 ~ 12%; Step 6: again put into the mandrel that a diameter is less than reinforcing cage internal diameter in pile body hole, again carries out static pressure or hammering construction to the mandrel in pile body hole, concrete is extruded from inside to outside bottom pile body hole, and finally forms enlarged footing.
In technique scheme, in step 5, when concreting, concreting speed should be controlled, and prevent from below concrete, occurring large cavity.
In technique scheme, in step 5, the time of concreting is less than 30 minutes.
In technique scheme, in step 4, the diameter 2 ~ 7cm less of the internal diameter of pile body of mandrel.
In technique scheme, in step 6, the diameter 2 ~ 7cm less of the internal diameter of pile body of described mandrel.
In technique scheme, in step 6, when concrete top end face is lower than reinforcing cage end face, suspends hammering or static pressure, and rejoin concrete, make concrete top end face all the time higher than reinforcing cage top end face.
The present invention is by adopting taper pile top, and at stake end formation enlarged footing, in pile top, place is furnished with reinforcing cage, makes the enlarged footing after building namely have stronger Compressive Bearing Capacity and stronger anti-pulling capacity.Meanwhile, after expanding under the first hammering of the present invention or static pressure, Reperfu-sion concrete, finally just extrudes, and makes pile-type adaptive type of the present invention better, can not only be applicable to soft clay area, and can be applicable to the harder area of soil layer.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention before carrying out second time static pressure or hammering.
Fig. 2 is the structural representation of the present invention when carrying out second time static pressure or hammering
Fig. 3 be the present invention at non-fluid concrete and pile tube completed lower expand time structural representation.
Fig. 4 be the present invention after pouring concrete completes, prepare carry out third time static pressure or hammering before structural representation.
Fig. 5 is the structural representation of the present invention after having constructed.
1-taper pile top in figure, 2-pile tube, 3-pile body hole, 4-reinforcing cage, 5-mandrel, 6-concrete, 7-enlarged footing, 8-ground, 9-bleeding cement groove, 10-pile body.
Detailed description of the invention
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not form limitation of the invention, only for example.Make advantage of the present invention clearly and easy understand by explanation simultaneously.
Accompanying drawings is known: extruding type expands die bed tube pile construction technique, it is characterized in that: it comprises following processing step,
Step 1, prepare the pile tube 2 that some bottoms are taper pile top 1, along the circumferential direction be provided with the reinforcing cage 4 with pile body hole 3 sidewall contact in the pile body hole 3 of pile tube 2, reinforcing cage 4 is arranged in taper pile top 1, and described pile tube 2 is made up of pile body 10 and the taper pile top 1 that is connected with pile body bottom;
Step 2: destroy the bleeding cement bottom pile body 10 with sander, make pile body hole 3 sidewall of pile body 10 expose fresh concrete surface, the length of described bleeding cement is 0.8 ~ 1.5m;
Step 3: static pressure or hammering construction are carried out, until suppress to design elevation by pile tube 2 to pile tube 2 by the construction technology of normal pile tube 2;
Step 4: put into the mandrel 5 that a diameter is less than reinforcing cage 4 internal diameter in pile body hole 3, static pressure or hammering construction are carried out to the mandrel 5 in pile body hole 3, taper pile top 1 is separated with pile body 2, and make taper pile top 1 move down 20 ~ 30cm, preferably, the diameter of mandrel 52 ~ 7cm less of the internal diameter of pile body 2;
Step 5: pour into the concrete 6 containing expansion agent in pile body hole 3, and the top end face of top end face higher than reinforcing cage 4 making concrete 6, in described concrete 6, the weight percent content of expansion agent is 8 ~ 12%.When concreting 6, concrete 6 speed of perfusion should be controlled, and prevent from occurring large cavity below concrete 6.The time of concreting 6 is less than 30 minutes;
Step 6: again put into the mandrel 5 that a diameter is less than reinforcing cage 4 internal diameter in pile body hole 3, static pressure or hammering construction are carried out again to the mandrel 5 in pile body hole 3, concrete 6 is extruded from inside to outside bottom pile body hole 3, and final formation enlarged footing 7, preferably, the diameter of described mandrel 52 ~ 7cm less of the internal diameter of pile body 2.In step 6, when concrete 6 top end face is lower than reinforcing cage 4 end face, suspends hammering or static pressure, and rejoin concrete 6, make concrete 6 top end face all the time higher than reinforcing cage 4 top end face.
Owing to defining an enlarged footing bottom pile tube of the present invention, thus add the bearing capacity of single pile of pile tube.
Vertical reinforcement should weld in pile tube pile top place of the present invention, and reinforcing bar should along the circumferential direction be close to pile body hole wall, and pile top adopts spot welding to be connected with pile body.
In practical work process, mandrel should adopt steel pipe, the present invention should first by normal procedure to pile body carry out first time static pressure or hammering construction, after pile body is got to design elevation, mandrel is inserted in pile body, second time injection or static pressure are carried out to pile body, thus bottom pile top is separated with pile body and lower expansion.After completing lower expansion, in pile body, pour into the appropriate concrete containing expansion agent, again mandrel is inserted in pile body, third time injection or static pressure are carried out to pile body, thus concrete is extruded at the bottom of pile body, form an enlarged footing.
Other unaccounted part all belongs to prior art.
Claims (6)
1. extruding type expands die bed tube pile construction technique, it is characterized in that: it comprises following processing step,
Step 1: prepare the pile tube (2) that some bottoms are taper pile top (1), the reinforcing cage (4) with pile body hole (3) sidewall contact is along the circumferential direction provided with in the pile body hole (3) of pile tube (2), reinforcing cage (4) is arranged in taper pile top (1), and described pile tube (2) is made up of pile body (10) and the taper pile top (1) that is connected with pile body bottom;
Step 2: the bleeding cement destroying pile body (10) bottom with sander, make the pile body hole of pile body (10) (3) sidewall expose fresh concrete surface, the length of described bleeding cement is 0.8 ~ 1.5m;
Step 3: static pressure or hammering construction are carried out, until suppress to design elevation by pile tube (2) to pile tube (2) by the construction technology of normal pile tube (2);
Step 4: put into the mandrel (5) that a diameter is less than reinforcing cage (4) internal diameter in pile body hole (3), static pressure or hammering construction are carried out to the mandrel (5) in pile body hole (3), taper pile top (1) is separated with pile body (10), and makes taper pile top (1) move down 20 ~ 30cm;
Step 5: pour into the concrete (6) containing expansion agent in pile body hole (3), and making the top end face of concrete (6) higher than the top end face of reinforcing cage (4), in described concrete (6), the weight percent content of expansion agent is 8 ~ 12%;
Step 6: again put into the mandrel (5) that a diameter is less than reinforcing cage (4) internal diameter in pile body hole (3), static pressure or hammering construction are carried out again to the mandrel (5) in pile body hole (3), concrete (6) is extruded from inside to outside in pile body hole (3) bottom, and finally forms enlarged footing (7).
2. extruding type according to claim 1 expands die bed tube pile construction technique, it is characterized in that: in step 5, when concreting (6), concrete (6) speed of perfusion should be controlled, and prevent concrete (6) below from occurring large cavity.
3. extruding type according to claim 2 expands die bed tube pile construction technique, and it is characterized in that: in step 5, the time of concreting (6) is less than 30 minutes.
4. the extruding type any one of claims 1 to 3 described in claim expands die bed tube pile construction technique, it is characterized in that: in step 4, the diameter 2 ~ 7cm less of the internal diameter of pile body (10) of mandrel (5).
5. the extruding type any one of claims 1 to 3 described in claim expands die bed tube pile construction technique, it is characterized in that: in step 6, the diameter 2 ~ 7cm less of the internal diameter of pile body (10) of described mandrel (5).
6. the extruding type any one of claims 1 to 3 described in claim expands die bed tube pile construction technique, it is characterized in that: in step 6, when concrete (6) top end face is lower than reinforcing cage (4) end face, suspend hammering or static pressure, and rejoin concrete (6), make concrete (6) top end face all the time higher than reinforcing cage (4) top end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054942.2A CN104727309A (en) | 2015-02-02 | 2015-02-02 | Construction technology of squeeze-in expanded-base pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054942.2A CN104727309A (en) | 2015-02-02 | 2015-02-02 | Construction technology of squeeze-in expanded-base pipe pile |
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| CN104727309A true CN104727309A (en) | 2015-06-24 |
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| CN201510054942.2A Pending CN104727309A (en) | 2015-02-02 | 2015-02-02 | Construction technology of squeeze-in expanded-base pipe pile |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714773A (en) * | 2016-03-01 | 2016-06-29 | 江苏东合南岩土科技股份有限公司 | Foundation treatment method |
| CN105735253A (en) * | 2016-03-01 | 2016-07-06 | 江苏东合南岩土科技股份有限公司 | Construction method for expansion head anti-pressing and anti-pulling pile |
| CN107254872A (en) * | 2017-07-13 | 2017-10-17 | 浙江大学 | Pile for prestressed pipe stake bottom floating sealing device and its control method |
| CN108952560A (en) * | 2018-07-25 | 2018-12-07 | 张刚 | Mining building site hammers body |
| CN109518685A (en) * | 2018-11-14 | 2019-03-26 | 天津中海水利水电工程有限公司 | A kind of prefabricated pilework and its construction method under water |
| CN112962587A (en) * | 2021-02-03 | 2021-06-15 | 江苏东合南岩土科技股份有限公司 | Construction method of PHC tubular pile end vibration-expansion-molded enlarged head pile |
| CN115217093A (en) * | 2022-08-16 | 2022-10-21 | 中铁上海设计院集团有限公司 | Self-stabilizing hollow pile for deep expansive soil area and construction method thereof |
| CN115233668A (en) * | 2022-08-16 | 2022-10-25 | 浙江大学 | Post-grouting construction method for precast tubular pile by internally hammering pile tip into rock |
| CN115305912A (en) * | 2022-02-14 | 2022-11-08 | 高云飞 | Tubular pile grouting, tamping and vibrating bottom expanding construction method |
| CN115492139A (en) * | 2022-11-22 | 2022-12-20 | 衡水路桥工程有限公司 | Road soil layer reinforcing device and method |
| CN115748674A (en) * | 2022-12-12 | 2023-03-07 | 中建八局第三建设有限公司 | Leak protection anti-floating pile |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB687592A (en) * | 1950-07-13 | 1953-02-18 | British Steel Piling Co Ltd | Improvements in the driving and formation of cased concrete piles |
| GB713362A (en) * | 1952-02-04 | 1954-08-11 | Frankignoul Pieux Armes | Method and device for forming reinforced foundation piles with an enlarged base |
| JPH062331A (en) * | 1992-06-16 | 1994-01-11 | Marugo Kiso Kogyo Kk | Construction method of cast-in-place reinforced concrete under-reamed pile and reinforced cage used therefor |
| CN1621626A (en) * | 2004-12-28 | 2005-06-01 | 王继忠 | Construction method for concrete pile |
| CN1749484A (en) * | 2005-10-17 | 2006-03-22 | 卫龙武 | Construction method for prefabricated tubular pile with expanding head |
| CN101148874A (en) * | 2007-10-11 | 2008-03-26 | 李树源 | Construction method for increasing dry auger boring pouring pile bearing capacity |
| CN101936004A (en) * | 2010-08-25 | 2011-01-05 | 张继红 | Precast expanding pile as well as construction method and construction mechanical equipment thereof |
-
2015
- 2015-02-02 CN CN201510054942.2A patent/CN104727309A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB687592A (en) * | 1950-07-13 | 1953-02-18 | British Steel Piling Co Ltd | Improvements in the driving and formation of cased concrete piles |
| GB713362A (en) * | 1952-02-04 | 1954-08-11 | Frankignoul Pieux Armes | Method and device for forming reinforced foundation piles with an enlarged base |
| JPH062331A (en) * | 1992-06-16 | 1994-01-11 | Marugo Kiso Kogyo Kk | Construction method of cast-in-place reinforced concrete under-reamed pile and reinforced cage used therefor |
| CN1621626A (en) * | 2004-12-28 | 2005-06-01 | 王继忠 | Construction method for concrete pile |
| CN1749484A (en) * | 2005-10-17 | 2006-03-22 | 卫龙武 | Construction method for prefabricated tubular pile with expanding head |
| CN101148874A (en) * | 2007-10-11 | 2008-03-26 | 李树源 | Construction method for increasing dry auger boring pouring pile bearing capacity |
| CN101936004A (en) * | 2010-08-25 | 2011-01-05 | 张继红 | Precast expanding pile as well as construction method and construction mechanical equipment thereof |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714773A (en) * | 2016-03-01 | 2016-06-29 | 江苏东合南岩土科技股份有限公司 | Foundation treatment method |
| CN105735253A (en) * | 2016-03-01 | 2016-07-06 | 江苏东合南岩土科技股份有限公司 | Construction method for expansion head anti-pressing and anti-pulling pile |
| CN105735253B (en) * | 2016-03-01 | 2017-10-10 | 江苏东合南岩土科技股份有限公司 | A kind of construction method of enlarged footing resistance to compression uplift pile |
| CN107254872A (en) * | 2017-07-13 | 2017-10-17 | 浙江大学 | Pile for prestressed pipe stake bottom floating sealing device and its control method |
| CN108952560B (en) * | 2018-07-25 | 2020-08-07 | 东阳市天齐科技有限公司 | Mining site hammering body |
| CN108952560A (en) * | 2018-07-25 | 2018-12-07 | 张刚 | Mining building site hammers body |
| CN109518685A (en) * | 2018-11-14 | 2019-03-26 | 天津中海水利水电工程有限公司 | A kind of prefabricated pilework and its construction method under water |
| CN112962587A (en) * | 2021-02-03 | 2021-06-15 | 江苏东合南岩土科技股份有限公司 | Construction method of PHC tubular pile end vibration-expansion-molded enlarged head pile |
| CN115305912A (en) * | 2022-02-14 | 2022-11-08 | 高云飞 | Tubular pile grouting, tamping and vibrating bottom expanding construction method |
| CN115217093A (en) * | 2022-08-16 | 2022-10-21 | 中铁上海设计院集团有限公司 | Self-stabilizing hollow pile for deep expansive soil area and construction method thereof |
| CN115233668A (en) * | 2022-08-16 | 2022-10-25 | 浙江大学 | Post-grouting construction method for precast tubular pile by internally hammering pile tip into rock |
| CN115492139A (en) * | 2022-11-22 | 2022-12-20 | 衡水路桥工程有限公司 | Road soil layer reinforcing device and method |
| CN115492139B (en) * | 2022-11-22 | 2023-02-14 | 衡水路桥工程有限公司 | Road soil layer reinforcing device and method |
| CN115748674A (en) * | 2022-12-12 | 2023-03-07 | 中建八局第三建设有限公司 | Leak protection anti-floating pile |
| CN115748674B (en) * | 2022-12-12 | 2023-09-22 | 中建八局第三建设有限公司 | Leakage-proof anti-pulling pile |
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Application publication date: 20150624 |