CN103590394A - Construction method of original-state soil-taking pouring pile - Google Patents

Construction method of original-state soil-taking pouring pile Download PDF

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Publication number
CN103590394A
CN103590394A CN201310627940.9A CN201310627940A CN103590394A CN 103590394 A CN103590394 A CN 103590394A CN 201310627940 A CN201310627940 A CN 201310627940A CN 103590394 A CN103590394 A CN 103590394A
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China
Prior art keywords
reinforcing cage
pile
construction method
concrete
drilling rod
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CN201310627940.9A
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CN103590394B (en
Inventor
刘全林
宋伟民
宋雪清
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Abstract

The invention provides a construction method of an original-state soil-taking pouring pile. According to the method, a center point of the pouring pile is determined, a pile body is set to position a steel sleeve, the steel sleeve is placed into a soil layer at a certain depth in a vibration or pressing mode, and downward drilling is started; after the steel sleeve reaches a designed depth in a drilling mode, a drill rod is lifted upwards by a certain height, a concrete pump is started, concrete is sent to the drill rod through a pipeline, the concrete is sprayed from the lower end of the drill rod, then the drill rod is slowly rotated and lifted, the concrete is pumped to a certain height while the drill rod is lifted, and a plain concrete pile is formed; the center of a steel cage is aligned to the center of the steel sleeve and is vertically placed in the steel cage at a specified depth, and a reinforced concrete pile is formed. According to the construction method, pollution of slurry to surrounding environment is fundamentally eliminated in the construction process, the hole shrinkage and hole collapse phenomena are effectively avoided in the construction process, the formed pile body has high bearing force and construction efficiency of the pile is obviously improved.

Description

The job practices of original state soil taking and filling pile
Technical field
The present invention relates to foundation engineering technical field, specifically relate to a kind of job practices of original state soil taking and filling pile.
Background technology
In existing pile foundation and base pit engineering, the most frequently used stake type of non-extruding earth performance is holing with slurry wall protection castinplace pile, this holing with slurry wall protection castinplace pile can be according to the requirement of design bearing capacity value, conveniently choose a footpath long with stake, without soil compaction, affect, this reliability increases substantially, thereby this bored pile type is widely used in engineering, as there being more than 80% stake in Pile Foundation, is the bored pile type that adopts mud off.
Yet this bored pile, in municipal construction, produces discarded drilling slurry and causes the severe contamination to urban environment, this mud flows into again sewer and causes obstruction drainage pipe; Or enter the rivers in city, make to rise on the riverbed of rivers and cause that the cross-section of river dwindles, affect thus the safety of drainning off floodwaters in city; For example the construct danger of bored pile of 1 cubic metre, need 7 cubic metres of clean waters, produce 4 cubic metres of discarded drilling slurries; If apply every year 300000 of bored piles, average stake footpath millimeter, average stake is long is 50 meters, produces thus the discarded drilling slurry of 3000 ten thousand steres, this is equivalent to the volume of 3 Hangzhou West Lakes; A large amount of discarded drilling slurries, cannot find storable place at peri-urban.
In soft foundation, shrinkage cavity in deposited reinforced concrete pile pore forming process, collapse hole phenomenon are very general, and the job practices of existing deposited reinforced concrete pile is difficult to be adapted in soft foundation.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the filling pile slurry pollution existing in prior art, shrinkage cavity, the collapse hole problem in pore forming process, and a kind of job practices of original state soil taking and filling pile is provided.
In order to address the above problem technical scheme of the present invention, be such:
Original state soil taking and filling pile construction method: comprise the following steps,
A. measurement and positioning, determines and the central point of castinplace pile, around central point, pile body location steel sleeve pipe is set;
B. adopt vibration or press mode that steel sleeve is vertically inserted to soil layer certain depth,
C. steel sleeve central point is aimed in drilling rod center, start lower brill;
D. get into after projected depth down, above carry drilling rod certain altitude, start concrete pump, by pipeline coagulation soil, deliver to drilling rod, drilling rod lower end ejection concrete, then carries drilling rod on slow circumvolve, on limit, carry drilling rod limit pumping of concrete, to design height, formin concrete pile;
E. in pile body location steel sleeve pipe, a reinforcing cage locating sleeve is set, reinforcing cage locating sleeve is concentric with pile body locating sleeve;
F. lift reinforcing cage, by reinforcing cage center steel sleeve center; Described reinforcing cage inside is provided with send muscle bar;
G. in the plain concrete pile of d step, vertically put into reinforcing cage to designated depth, form reinforced concrete pile;
H. will send muscle bar to extract;
I transfers to steel sleeve;
J. cleaning stake is pushed up.By the eliminating impurities such as surface dust on stake top.
More than the diameter of steel sleeve is greater than the diameter 1cm of drilling rod screw blade; More than the diameter of reinforcing cage locating sleeve is greater than the diameter 1cm of reinforcing cage; More than the diameter of steel sleeve is greater than the diameter 1cm of reinforcing cage locating sleeve.
Send muscle pole length to be more than or equal to or to be less than the length of reinforcing cage.
Sending on muscle bar of reinforcing cage center is provided with vibrator, and during descending reinforcing cage, vibrator vibrates simultaneously.
On drilling rod, with screw blade, screw blade arranged outside has projection, and undisturbed soil is taken in screw blade rotation out of, and pile body outside forms helicla flute simultaneously.
The upper end of reinforcing cage is provided with steel reinforcement protective sleeve.
Reinforcing cage outside is provided with pre-embedded steel slab.
Before lower brill, carry out drilling rod squareness measurement.
Form two or two above castinplace piles simultaneously.
Reinforcing cage contains can apply prestressed reinforcement.
Beneficial effect, the job practices of original state soil taking and filling pile of the present invention, adopts and gets undisturbed soil engineering method, fundamentally eliminates the pollution of borehole wall-protection mud to surrounding environment; And the shrinkage cavity of effectively avoiding in work progress, collapse hole phenomenon.Shape stake has compared with high-bearing capacity, can significantly improve the efficiency of construction of stake.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention in detail;
Fig. 1 is the structural representation of the construction equipment of original state soil taking and filling pile of the present invention.
Fig. 2 is this equipment hoisting reinforcing cage schematic diagram.
Fig. 3 is in formation of pile, and drilling rod is aimed at steel sleeve center schematic diagram.
Fig. 4 is in formation of pile, above carries drilling rod pneumatically placed concrete schematic diagram.
Fig. 5 is in formation of pile, starts descending reinforcing cage schematic diagram.
Fig. 6 is pile body schematic cross-section after pile.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, referring to Fig. 1 a, a kind of construction equipment of original state soil taking and filling pile, comprise frame 1 and drilling tool 4, in frame, be provided with vertical guide rod 3 and running gear 2, drilling tool comprises dynamic rotation system 41, drilling rod 42, vertical guide rod top is provided with a plurality of suspensions 5, one of them suspension is connected with a boom hoisting 51, a suspension connects dynamic rotation system 41, dynamic rotation system jointed rod 42, drilling rod 42 upper ends connect the carrier pipe 43 of delivering concrete, on drilling rod 42, be provided with screw blade 44, in drilling rod, be provided with hollow channel, drilling rod lower end is provided with concrete ejiction opening 45, on ejiction opening, be provided with one way valve, on vertical guide rod 3, be provided with at least one leading truck 31, described drilling rod 42 is positioned at leading truck 31 middle parts, vertical guide rod 3 is provided with 32, two guide rod vertical gauges of two guide rod vertical gauges and vertical center of pilot line and is 90 ° of angles and arranges and (see Fig. 1 a).
Described drilling rod 42 length >=35m.
Vertical guide rod 3 is provided with track 33, and dynamic rotation system 41 moves up and down along track.
Described walking mechanism 2 is step moving mechanism, and the line between two suspension 5 point of suspension moves towards parallel with step moving mechanism.
The arranged outside of described screw blade 44 has projection 441.
Referring to Fig. 2, described boom hoisting connects one for inserting the reinforcing cage 6 of castinplace pile, is provided with one and send muscle bar 61 in reinforcing cage 6.Send muscle bar upper end to be provided with vibrator 62.When vibrator 62 and work, being beneficial to reinforcing cage 6 inserts in pile body smoothly.After construction, vibrator 62 is together with sending muscle bar 61 to extract in the lump recovery.
Work progress is as follows:
A. measurement and positioning, determines and the central point of castinplace pile, around central point, pile body location steel sleeve pipe 7 is set;
B. adopt vibration or press mode that steel sleeve 7 is vertically inserted to soil layer certain depth, referring to Fig. 3;
C. by drilling rod 42 center centring points, start lower brill;
D. get into after projected depth down, above carry drilling rod 42 certain altitudes, start concrete pump, by pipeline coagulation soil, deliver to drilling rod, drilling rod lower end ejection concrete, then carries drilling rod on slow circumvolve, carries drilling rod limit pumping of concrete on limit, to design height, formin concrete pile, referring to Fig. 4;
E. in steel sleeve, a reinforcing cage locating sleeve 8 is set, reinforcing cage locating sleeve 8 is concentric with steel sleeve 7;
F. lift reinforcing cage 6, by reinforcing cage 6 center reinforcing cage locating sleeve 8 centers; Described reinforcing cage 6 inside are provided with send muscle bar 61, and the length of sending muscle bar 61 length to be more than or equal to reinforcing cage 6, referring to Fig. 5; Reinforcing cage locating sleeve 8 upper ends are bell mouth shape, are beneficial to location and the insertion of reinforcing cage.
G. in the plain concrete pile of d step, vertically put into reinforcing cage 6 to designated depth, form reinforced concrete pile;
H. will send muscle bar 61 to extract;
I. steel sleeve 7 and reinforcing cage locating sleeve 8 are transferred to.
J. cleaning stake top, removes the foreign material such as unnecessary surface dust mud.
More than the diameter of steel sleeve 7 is greater than the diameter 1cm of drilling rod screw blade 44; More than the diameter of reinforcing cage locating sleeve 8 is greater than the diameter 1cm of reinforcing cage 6.More than the diameter of steel sleeve 7 is greater than the diameter 1cm of reinforcing cage locating sleeve 8.
Sending on muscle bar 61 of reinforcing cage center is provided with vibrator 62, and during descending reinforcing cage, vibrator vibrates simultaneously.
On drilling rod, with screw blade, screw blade arranged outside has projection 441, and undisturbed soil is taken in screw blade rotation out of, and pile body outside forms helicla flute simultaneously.
Reinforcing cage 6 outsides are provided with pre-embedded steel slab, and pre-embedded steel slab is used for connecting foundation ditch inner support.
Before lower brill, carry out drilling rod 42 squareness measurements.
Form two or two above castinplace piles simultaneously.
Reinforcing cage 6 contains can apply prestressed reinforcement.Prestressed reinforcement is that steel strand or other can apply prestressed muscle body.
Finally form deposited reinforced concrete pile, referring to Fig. 6.On the excircle of pile body, have helicla flute, this helicla flute is that the projection 441 in screw blade 44 outsides forms in rotary course.
Reinforcing cage 6 top rebars of the deposited reinforced concrete pile of pile arrange steel reinforcement protective sleeve.
The job practices of original state soil taking and filling pile of the present invention, adopts and gets undisturbed soil engineering method, fundamentally eliminates the pollution of borehole wall-protection mud to surrounding environment; And the shrinkage cavity of effectively avoiding in work progress, collapse hole phenomenon.The pile body forming has compared with high-bearing capacity, significantly improves the efficiency of construction of stake.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of patent of the present invention is defined by appending claims and equivalent thereof.

Claims (10)

1. original state soil taking and filling pile construction method: it is characterized in that, comprise the following steps,
A. measurement and positioning, determines and the central point of castinplace pile, around central point, pile body location steel sleeve pipe is set;
B. adopt vibration or press mode that steel sleeve is vertically inserted to soil layer certain depth,
C. steel sleeve central point is aimed in drilling rod center, start lower brill;
D. get into after projected depth down, above carry drilling rod certain altitude, start concrete pump, by pipeline coagulation soil, deliver to drilling rod, drilling rod lower end ejection concrete, then carries drilling rod on slow circumvolve, on limit, carry drilling rod limit pumping of concrete, to design height, formin concrete pile;
E. in pile body location steel sleeve pipe, a reinforcing cage locating sleeve is set, reinforcing cage locating sleeve is concentric with pile body locating sleeve;
F. lift reinforcing cage, by reinforcing cage center steel sleeve center; Described reinforcing cage inside is provided with send muscle bar;
G. in the plain concrete pile of d step, vertically put into reinforcing cage to designated depth, form reinforced concrete pile;
H. will send muscle bar to extract;
I transfers to steel sleeve and reinforcing cage locating sleeve;
J. cleaning stake is pushed up.
2. original state soil taking and filling pile construction method according to claim 1, is characterized in that, more than the diameter of steel sleeve is greater than the diameter 1cm of drilling rod screw blade; More than the diameter of reinforcing cage locating sleeve is greater than the diameter 1cm of reinforcing cage; More than the diameter of steel sleeve is greater than the diameter 1cm of reinforcing cage locating sleeve.
3. original state soil taking and filling pile construction method according to claim 1, is characterized in that, send muscle pole length to be more than or equal to the length of reinforcing cage.
4. original state soil taking and filling pile construction method according to claim 1, is characterized in that, sending on muscle bar in reinforcing cage is provided with vibrator, and while putting into reinforcing cage, vibrator vibrates simultaneously.
5. original state soil taking and filling pile construction method according to claim 1, is characterized in that,
On drilling rod, with screw blade, screw blade arranged outside has projection, and undisturbed soil is taken in screw blade rotation out of, and pile body outside forms helicla flute simultaneously.
6. original state soil taking and filling pile construction method according to claim 1, is characterized in that, the upper end of reinforcing cage is provided with steel reinforcement protective sleeve.
7. original state soil taking and filling pile construction method according to claim 1, is characterized in that, reinforcing cage outside is provided with pre-embedded steel slab.
8. original state soil taking and filling pile construction method according to claim 1, is characterized in that, before lower brill, carries out drilling rod squareness measurement.
9. original state soil taking and filling pile construction method according to claim 1, is characterized in that, forms two or two above castinplace piles simultaneously.
10. original state soil taking and filling pile construction method according to claim 1, is characterized in that, reinforcing cage contains can apply prestressed reinforcement.
CN201310627940.9A 2013-11-29 2013-11-29 The construction method of original state soil taking and filling pile Active CN103590394B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615000A (en) * 2013-12-18 2014-03-05 上海强劲地基工程股份有限公司 Construction device of original-state earth-borrowing cast-in-place pile
CN103882859A (en) * 2014-04-03 2014-06-25 上海强劲地基工程股份有限公司 Original-state soil borrowing press-grouting concrete pile exerted by prestress and construction method thereof
CN103882870A (en) * 2014-03-24 2014-06-25 上海强劲地基工程股份有限公司 Cement mixing pile and concrete pile meshing supporting structure and construction method

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Publication number Priority date Publication date Assignee Title
CN1361334A (en) * 2000-12-27 2002-07-31 柯刚 Pile constructing process including drilling hole with long screw and pressure depositing concrete and steel bar cage vibrating feeder
JP2007255107A (en) * 2006-03-24 2007-10-04 Shimizu Corp Construction method for cast-in-place concrete pile
CN102277870A (en) * 2011-05-16 2011-12-14 广东省水利电力勘测设计研究院 Sand pile replacement type stirring pile
CN102807342A (en) * 2012-08-24 2012-12-05 北京城建亚泰建设集团有限公司 Concrete applicable to rear insertion cage and preparation method thereof
JP2013122121A (en) * 2011-12-09 2013-06-20 Senshu Iwatani:Kk Reinforcement cage erection method, float application device for use in the method, and buoyancy body disengagement device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1361334A (en) * 2000-12-27 2002-07-31 柯刚 Pile constructing process including drilling hole with long screw and pressure depositing concrete and steel bar cage vibrating feeder
JP2007255107A (en) * 2006-03-24 2007-10-04 Shimizu Corp Construction method for cast-in-place concrete pile
CN102277870A (en) * 2011-05-16 2011-12-14 广东省水利电力勘测设计研究院 Sand pile replacement type stirring pile
JP2013122121A (en) * 2011-12-09 2013-06-20 Senshu Iwatani:Kk Reinforcement cage erection method, float application device for use in the method, and buoyancy body disengagement device
CN102807342A (en) * 2012-08-24 2012-12-05 北京城建亚泰建设集团有限公司 Concrete applicable to rear insertion cage and preparation method thereof

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Title
张炳信: "套管旋挖灌注桩施工技术研究及应用", 《广东土木与建筑》, no. 4, 30 April 2013 (2013-04-30), pages 19 - 21 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103615000A (en) * 2013-12-18 2014-03-05 上海强劲地基工程股份有限公司 Construction device of original-state earth-borrowing cast-in-place pile
CN103882870A (en) * 2014-03-24 2014-06-25 上海强劲地基工程股份有限公司 Cement mixing pile and concrete pile meshing supporting structure and construction method
CN103882859A (en) * 2014-04-03 2014-06-25 上海强劲地基工程股份有限公司 Original-state soil borrowing press-grouting concrete pile exerted by prestress and construction method thereof
CN103882859B (en) * 2014-04-03 2015-12-09 上海强劲地基工程股份有限公司 A kind of original state of Shi Hanzhang fetches earth cast-with-pressure concrete pile and construction method thereof

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