CN101333811B - Concrete filling pile head static cutting and crushing method - Google Patents
Concrete filling pile head static cutting and crushing method Download PDFInfo
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- CN101333811B CN101333811B CN200810117754XA CN200810117754A CN101333811B CN 101333811 B CN101333811 B CN 101333811B CN 200810117754X A CN200810117754X A CN 200810117754XA CN 200810117754 A CN200810117754 A CN 200810117754A CN 101333811 B CN101333811 B CN 101333811B
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Abstract
The invention discloses a pile head static cutting crushing method for a bored concrete pile; a plurality of cutting bodies are evenly and horizontally fixed around the vertical steel ribs of a steel reinforcement cage of the bored pile on the position where the concrete needs to be removed; the concrete is poured after the steel reinforcement cage is hung into the pile hole; the pile head concrete is pulled out by a hoisting device or is cleaned manually after the concrete hardens; the pile head static cutting crushing method is characterized in that the number and the distribution form of the cutting bodies are designed according the diameter of the bored pile; for the bored pile with the diameter less than 1000mm, the cutting bodies are distributed outside the vertical steel ribs; for the bored pile with the diameter more than 1600mm, the cutting bodies are distributed inside the vertical steel ribs and at least a support steel rib is arranged in the pile parallel to the cutting bodies; each support steel rib is fixed bound with a cutting body; besides, one cutting body can be vertically fixed outside each vertical steel rib to realize the bidirectional cutting. The pile head static cutting crushing method for the bored concrete pile has the advantages of obviously reducing the construction cost and the labor intensity, shortening the construction period, preventing the vibration noise and the dust in the construction process, being applicable to the popularization and application of the construction industry.
Description
Technical field
The present invention relates to a kind of concrete filling pile head static cutting and crushing method, belong to the supporting treatment measures after concrete building structure is built moulding.
Background technology
Cast-in-place concrete pile is a kind of structural measure that improves basic supporting capacity that often uses in worker China Democratic National Construction Association and infrastructure, is extensive use of in the area of highrise building, bridge and some earth bearing strength differences.Because castinplace pile is in building forming process, the concrete of the superiors can mix with the mud in the stake hole, and intensity is very low, does not reach the pile body design strength, so this part pile crown concrete must cut away, and exposes the vertical reinforcement in the pile body.But handle the unnecessary concrete of pile crown for a long time and never have good way, can only lean on artificial rejecting, the effort of taking a lot of work, exhaust the people and drain the treasury, construction noise and airborne dust are also very big to ambient influnence, in with the unnecessary concrete process of pneumatic pick rejecting pile crown, be easy to damage vertical reinforcement, influence the quality of cast-in-place concrete pile.
The applicant is at granted patent ZL200420093041.1 " concrete filling pile head static cutter sweep "; in; the unnecessary concrete technical thought of a kind of static cutting and crushing pile crown has been proposed; wherein specialized designs a kind of concrete filling pile head static cutter sweep; sandwich construction cutting body for bar-shaped profile; there is the expansion core body at the center, covers pervious layer and topping outward.A plurality of these cutting bodies are installed on the precalculated position of pile body reinforcing cage concreting again, the material that causes the center swell core body by the mixing water in the concrete expands, the expansion force that produces produces the crack in the precalculated position after can making hardening of concrete, reaches the purpose of concrete pile being cut off at design attitude.In concrete enforcement, the inventor finds, position, mode and quantity that cutting body is installed have a significant impact cutting effect, in advance in the patent the disclosed mode that is installed within the reinforcing cage vertical reinforcement be only applicable to the castinplace pile diameter greater than 1000mm the situation less than 1500mm, and be not suitable for the castinplace pile of all sizes, cut and lifting is pulled out in the process at the castinplace pile to other size, existence can not become concrete cutting the defective of small blocks.For this reason, need to improve position, mode and the quantity that cutting body is installed, so that the unnecessary concrete method adaptive surface of the noiseless cutting and crushing concrete filling pile head of static state is wider.
Summary of the invention
The purpose of this invention is to provide a kind of concrete filling pile head static cutting and crushing method, can make the cast-in-place concrete pile of all size produce the crack, be convenient to realize the unnecessary concrete of directional dismantling pile crown in the precalculated position.
To achieve these goals, the present invention is by the following technical solutions:
A kind of concrete filling pile head static cutting and crushing method need be removed the uniform fixing a plurality of cutting bodies of level one circle on the vertical reinforcement of concrete position reinforcing cage at castinplace pile, every vertical reinforcement is all established one and tied up solid point; After the reinforcing cage that fixes cutting body hung in a hole, concreting at once; Pull out or labor cleaning's pile crown concrete with lifting appliance after the hardening of concrete; Its characteristics are: according to the size of castinplace pile diameter, and the quantity and the arrangement of design cutting body.
In the above concrete filling pile head static cutting and crushing method,, cutting body is arranged in outside the vertical reinforcement the castinplace pile of diameter less than 1000mm.Described cutting body length is 400～600mm, and quantity is three.
In the above concrete filling pile head static cutting and crushing method, to the castinplace pile of diameter greater than 1600mm, cutting body is arranged within the vertical reinforcement, and adds at least one bearing bar, tie up a solid cutting body on each bearing bar at the inside and the same level of the cutting body place of stake.Described cutting body length is 400～600mm, and quantity is six.
In the above concrete filling pile head static cutting and crushing method, on every vertical reinforcement, swathe or the suit isolated material.Described isolated material is foamed plastics, rubber-plastics material, paper products etc.
In the above concrete filling pile head static cutting and crushing method, cutting body of vertical fixing again outside every vertical reinforcement.
In the above concrete filling pile head static cutting and crushing method, cutting body of vertical fixing again outside the isolated material of every vertical reinforcement.
Adopt technique scheme, the present invention has the following advantages:
1, constructing operation is easy, does not need the operating personnel of special equipment instrument and professional skill;
2, can significantly reduce operating expenses and labour intensity;
3, reduction of erection time significantly;
4, use the utility model construction, friction noise and dust can improve operating environment;
5, can not influence its level and destroy the following mechanical properties of concrete of face, to hardened concrete also without any the harmful effect of aquation aspect.
Description of drawings
Figure 1A is prior art horizontal resection (castinplace pile diameter 1000mm-1500mm) scheme of installation;
Figure 1B is that the A-A of Figure 1A is to sectional view;
Fig. 2 is horizontal resection of the present invention (castinplace pile diameter 800mm-900mm) scheme of installation;
Fig. 3 is horizontal resection of the present invention (castinplace pile diameter 1600mm-2000mm) scheme of installation;
Fig. 4 is vertical reinforcement parcel isolated material of the present invention, and horizontal resection adds the perpendicular cuts scheme of installation;
Fig. 5 does not wrap up isolated material for vertical reinforcement of the present invention, and horizontal resection adds the perpendicular cuts scheme of installation.
The specific embodiment
Patent ZL200420093041.1 discloses a kind of to concrete filling pile head static horizontal resection mode (being called reference examples), implements according to following steps substantially:
1) swathing or put isolated material 2 on the every vertical reinforcement 1 that filling pile cage of reinforcement (being made up of many vertical reinforcements 1 and circumferential reinforcement 4) is reserved (swathes and uses banded isolated material, suit tubulose isolated material, isolated material is generally used foamed plastics, rubber-plastics material, paper products etc.), prevent concrete and vertical reinforcement bonding.
2) be that 400～600mm " concrete filling pile head static cutter sweep " (or being called for short cutting body) 3 removes damp-prrof packing with four length, need remove within the vertical reinforcement 1 of reinforcing cage at concrete design position with the uniform castinplace pile that is fixed on of wiring level one circle of metal, plastics, linen-cotton matter or other material, general every vertical reinforcement all is one and ties up solid point (referring to Figure 1A and Figure 1B).
3) reinforcing cage that will fix cutting body is after suspension hook position D hangs in a hole, at once concreting.
4) concreting finished 1 day after 7 days, and the expansion force that cutting body produces can produce the crack in the broken position of cast-in-place pile concrete predetermined cuts after sclerosis, and cast-in-place concrete pile is cut off; This moment the pile crown concrete that cuts off is pulled out with lifting appliance or the labor cleaning promptly finishes static crushing and removes the unnecessary concrete work of pile crown.
5) finishing stake surface concrete.
When adopting above process that castinplace pile is carried out horizontal resection, cutting and crushing effect and step 2) cutting body position, quantity and the arrangement arranged be all relevant.During less than 1500mm, cutting body is arranged in (referring to Figure 1A and Figure 1B) within the vertical reinforcement greater than 1000mm for the castinplace pile diameter, effect is apparent in view.And for the castinplace pile of other size, this layout cutting effect of cutting body is unsatisfactory.
The present invention is on the basis of previous level cutting, continues to seek better cutting mode, forms following multiple embodiments:
Embodiment 1: to the horizontal resection of diameter less than the 1000mm filling pile head
All identical with other step of reference examples, difference is step 2) three cutting bodies 3 of middle use, and cutting body is arranged in (referring to Fig. 2) outside the vertical reinforcement 1.In this case, the cutting force of cutting body is enough to cross over the reinforcing bar resistance, cast-in-place pile concrete is cut off along the precalculated position, and cutting body is arranged in outside the vertical reinforcement 1, can avoid Small Diameter Pile in the concrete perfusion process, tremie pipe touching cutting body.
Embodiment 2: to the horizontal resection of diameter greater than the 1600mm filling pile head
All identical with other step of reference examples, difference is, step 2) uses six or more cutting body 3 in, and cutting body is except being arranged within the vertical reinforcement 1, also need to establish at least one bearing bar 7 in the inside of stake, this bearing bar 7 and other cutting body 3 are in same horizontal plane, the other cutting body 3 ' of same binding on the bearing bar 7.As shown in Figure 3, shown and set up two bearing bars 7 and cutting body 3 ' in addition.Like this, the cutting body 3 ' on the bearing bar 7 produces horizontal fracture in the time of can making hardening of concrete in the middle of the reinforcing cage, thereby this part concrete is also produced dissection, so that the lifting of step 4) is lighter.Do not assist cutting if bearing bar is not set, only depend on the cutting body that is arranged in hoop, cutting force can't cut off large diameter pile.
Embodiment 3: the two-way cutting of filling pile head
1) swathing or put isolated material 6 on the every vertical reinforcement 1 that filling pile cage of reinforcement is reserved (swathes and uses banded isolated material, suit tubulose isolated material, isolated material is generally used foamed plastics, rubber-plastics material, paper products etc.), prevent concrete and vertical reinforcement bonding.
2) will remove wiring level one circle of a plurality of cutting bodies 3 usefulness metals, plastics, linen-cotton matter or other material of damp-prrof packing uniform be fixed on castinplace pile need remove on the vertical reinforcement of reinforcing cage at concrete design position (within), general every vertical reinforcement all is one and ties up solid point; Simultaneously, outside the isolated material 6 of every vertical reinforcement 1, use cutting body 3 ' of wiring vertical fixing again, referring to Fig. 4.
3) after the reinforcing cage that will fix cutting body 3 hangs in a hole, concreting at once.
4) concreting finished 1 day after 7 days, the expansion force that cutting body 3 produces can produce the crack in the broken position of cast-in-place pile concrete predetermined cuts after sclerosis, wherein the cutting body 3 generation horizontal fractures of level installing cut off cast-in-place concrete pile, and the cutting body 3 ' of vertical installing produces vertical fracture in every vertical reinforcement 1 outside; The pile crown concrete that cuts off pulled out with lifting appliance or the labor cleaning promptly finishes static crushing and removes the unnecessary concrete work of pile crown.
5) finishing stake surface concrete.
Embodiment is identical with the front, when castinplace pile is carried out horizontal resection, should select the quantity and the arrangement of cutting body according to the size of castinplace pile diameter.The castinplace pile diameter can be arranged in cutting body (referring to Fig. 2) outside the vertical reinforcement during less than 1000mm; The castinplace pile diameter, can be arranged in cutting body (referring to Figure 1A) within the vertical reinforcement during less than 1500mm greater than 1000mm; The castinplace pile diameter is during greater than 1600mm, removes cutting body is arranged within the vertical reinforcement, also should add bearing bar and cutting body (referring to Fig. 3) in the inside of stake.The castinplace pile of the applicable all size of vertical cutting.
Present embodiment adopts the mode of two-way cutting, not only handles the position at the predetermined pile crown of cast-in-place pile concrete and produces the crack, and cast-in-place concrete pile is cut off, and also can vertically cut out the crack by the concrete outside vertical reinforcement, more convenient artificial dismantling concrete.Its advantage is: the block of concrete cutting Cheng Gengxiao can be convenient to manually remove concrete under the situation that does not have mechanical lifting appliance to pull out.
Embodiment 4: the two-way cutting of filling pile head
All identical with embodiment 4 other steps, difference is, omits step 1), promptly need not swathe or put isolated material 2 on every vertical reinforcement 1, and vertical cutting body 3 ' is directly tied up in the outside of every vertical reinforcement 1, referring to shown in Figure 5.Make sclerosis back concrete produce the crack at vertical reinforcement 1 place because every vertical reinforcement 1 outside is equipped with cutting body 3 ', can avoid boning with vertical reinforcement.
More than with specific embodiment specific implementation method of the present invention has been described, these embodiment just exemplify, and are not construed as limiting the invention.Method of the present invention has following characteristics:
1, only that the cast-in-place concrete pile horizontal resection is disconnected, adapt to different castinplace piles, the quantity of cutting body, position and distribution mode are different, and the pile crown concrete that needs to remove relies on isolated material to separate with vertical reinforcement, more is applicable to lifting appliance and pulls out the pile crown concrete.As embodiment 1 and 2.
2, not only that the cast-in-place concrete pile horizontal resection is disconnected, the concrete outside the pile crown vertical reinforcement that also will need to remove vertically cuts out the crack, relies on isolated material to separate concrete and vertical reinforcement, more convenient artificial dismantling concrete.As embodiment 3.
3, not only that the cast-in-place concrete pile horizontal resection is disconnected, the concrete outside the pile crown vertical reinforcement that also will need to remove vertically cuts out the crack, more convenient artificial dismantling concrete.As embodiment 4.
Claims (2)
1. concrete filling pile head static cutting and crushing method need be removed the uniform fixing a plurality of cutting bodies of level one circle on the vertical reinforcement of concrete position reinforcing cage at castinplace pile, every vertical reinforcement is all established one and tied up solid point; After the reinforcing cage that fixes cutting body hung in a hole, concreting at once; Pull out or labor cleaning's pile crown concrete with lifting appliance after the hardening of concrete; It is characterized in that: according to the size of castinplace pile diameter, the quantity and the arrangement of design cutting body to the castinplace pile of diameter less than 1000mm, are arranged in cutting body outside the vertical reinforcement.
2. according to the described concrete filling pile head static cutting and crushing method of claim 1, it is characterized in that: described cutting body length is 400～600mm, and quantity is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810117754XA CN101333811B (en) | 2008-08-05 | 2008-08-05 | Concrete filling pile head static cutting and crushing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810117754XA CN101333811B (en) | 2008-08-05 | 2008-08-05 | Concrete filling pile head static cutting and crushing method |
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| CN101333811A CN101333811A (en) | 2008-12-31 |
| CN101333811B true CN101333811B (en) | 2011-05-18 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425159B (en) * | 2011-08-31 | 2013-12-18 | 浙江大学城市学院 | Pile cutting construction method of bored concrete pile |
| CN102493434B (en) * | 2011-11-28 | 2014-04-16 | 中铁大桥局股份有限公司 | Construction method for integrally and quickly hoisting and removing pile head of bored cast-in-place pile |
| CN102733391B (en) * | 2012-07-11 | 2014-07-16 | 中交三航局第二工程有限公司 | Construction method of pile body underwater cutting |
| CN102995640B (en) * | 2012-12-31 | 2014-09-17 | 龚正圣 | Combined partition device used for chiseling pouring pile head concrete and dismounting method thereof |
| CN106436710B (en) * | 2016-10-14 | 2018-03-27 | 荆门创佳机械科技有限公司 | A kind of hydraulic shear for amputating concrete pile head |
| CN107268627B (en) * | 2017-07-14 | 2019-08-23 | 中国一冶集团有限公司 | One kind being suitable for large-scale cast-in-situ bored pile pile crown restructuring bankrupt |
| CN108775226A (en) * | 2018-06-08 | 2018-11-09 | 兖州煤业股份有限公司 | A kind of device and method of underground static crushing armored concrete arch body |
| CN108999188A (en) * | 2018-08-30 | 2018-12-14 | 中建五局土木工程有限公司 | Crushing device, restructuring bankrupt and the application of cast-in-situ bored pile pile crown |
| CN110656644B (en) * | 2019-09-26 | 2024-02-09 | 广东省建筑工程机械施工有限公司 | Reinforcement cage erecting structure and method for breaking pile head of cast-in-place pile through reverse static blasting |
| CN113522444B (en) * | 2021-07-23 | 2022-11-01 | 山西八建集团有限公司 | Building energy-concerving and environment-protective concrete recovery unit that uses |
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Address after: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee after: CHINA BUILDING MATERIALS ACADMEY Address before: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee before: CHINA BUILDING MATERIALS ACADEMY |
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Effective date of registration: 20211210 Address after: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee after: Zhongyanyi Technology Co.,Ltd. Address before: 100024 No. 1, East Lane, Chaoyang District, Beijing, Guanzhuang Patentee before: CHINA BUILDING MATERIALS ACADMEY |