CN109944246A - A kind of construction method of broken pile head - Google Patents
A kind of construction method of broken pile head Download PDFInfo
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- CN109944246A CN109944246A CN201910137578.4A CN201910137578A CN109944246A CN 109944246 A CN109944246 A CN 109944246A CN 201910137578 A CN201910137578 A CN 201910137578A CN 109944246 A CN109944246 A CN 109944246A
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- separation layer
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- steel reinforcement
- reinforcement cage
- pile crown
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Abstract
The invention discloses a kind of construction methods of broken pile head, pass through all main reinforcements of inside and outside separation layer overall isolation pile crown and bonding for concrete, the concrete parts being located at outside outer separation layer that pile crown is first abolished when broken pile head, remove outer separation layer, break straight steel reinforcement cage main reinforcement, truncation is located at the pile crown in interior separation layer from pile crown absolute altitude, it can be hung oneself from pile body except pile crown, structure is simple, and easy construction is quick, reinforcing bar will not cause deformation, damage, substantially increase the straight rate of reinforcing bar.
Description
Technical field
The present invention relates to the realm of building construction more particularly to a kind of construction methods of broken pile head.
Background technique
Be poured bored concrete pile when, bored concrete pile top mark height should be higher than that design 0.5~1.0m of stake top absolute altitude to guarantee pile crown concrete strength,
But the pile crown part for being higher than design of pile top absolute altitude must be cut when subsequent handling is constructed, and cut the work of this part pile crown concrete
Work is called " broken pile head ".Mainly use manually abolishes pile crown to the construction method of existing broken pile head or human assistance small-sized machine is abolished
Pile crown is removed again after abolishing, this can expend a large amount of manpower and material resources, and, speed is very slow, and it is big to pile quality, pile body reinforcing bar damage,
It is not matched that with efficient speed of application required by infrastructure development project.Specific deficiency has the following: 1, construction efficiency
It is low；2, it is taken a long time when removing main reinforcement and sound detecting pipe, efficiency is lower；3, when being dug out using pneumatic pick, reinforcing bar is easily caused to damage,
Cause bar bending to deform, to reduce tensile strength, weakens the connection between pile body and cushion cap；4, after abolishing pile crown, stake top is high
Low injustice；5, it will affect the health of construction personnel to a certain extent, huge tremble of portable pneumatic equipment can damage operator
Wrist and arm, the noise and dust of generation also form very poor working environment.
In view of the above deficiencies, it is thus proposed that solution, such as CN104480931A, a kind of machinery of quick dismounting pile crown
The method of pore-creating filling pile before pile body casting concrete, covers upper plastic bushing at pile crown reinforcing bar position, at pile crown removal position
The horizontally disposed plastic tube of upper layer and lower layer is set, penetrate inside overlying plastic pipe on hanging ring reinforcing bar and hanging ring reinforcing bar it is curved to ground simultaneously
It is fixed temporarily with ground, lower layer also sets up annular plastics pipe, and each plastic tube both ends are sealed using foaming agent；Pile crown concrete removal
Before, hanging ring reinforcing bar is welded and forms hanging ring, pile crown removal position carries out dismounting mark；When dismounting, at the both ends of lower layer's plastic tube
It is respectively put into iron chock, beats iron chock with iron hammer, pile crown concrete is broken in upper and lower level plastic tube horizontal plane, hangs pile crown portion
Position concrete is completed to remove.It has the following deficiencies: that structure is complicated, constructs cumbersome.
Summary of the invention
The present invention provides a kind of construction method of broken pile head, which overcome present in broken pile head in background technique not
Foot.
The used technical solution that the present invention solves its technical problem is:
A kind of construction method of broken pile head, including pile body moulding section and broken pile head part；
Inside and outside separation layer is first installed in the pile body moulding section on the position of the correspondence pile crown of steel reinforcement cage, after pour again it is mixed
Solidifying soil, interior separation layer are installed in steel reinforcement cage, and outer separation layer is enclosed in outside steel reinforcement cage, and several main reinforcements that steel reinforcement cage has are located in
Between inside and outside separation layer；
The broken pile head part includes:
B1 abolishes the concrete parts of pile crown being located at outside outer separation layer, removes outer separation layer；
B2 breaks straight steel reinforcement cage main reinforcement；
B3, truncation is located at the pile crown in interior separation layer from pile crown absolute altitude, which is not less than the cushion cap top of pile body
End；
B4 hangs oneself from pile body except pile crown.
Among one embodiment: the pile body moulding section includes:
A1, prepares steel reinforcement cage, and steel reinforcement cage includes several main reinforcements, several circumferentially-spaced arrangements of main reinforcement, and main reinforcement end
End bending setting；
A2 installs inside and outside separation layer, inside and outside separation layer and steel reinforcement cage is connected, inside and outside separation layer top is located at steel
Muscle cage top end, inside and outside separation layer bottom end are higher than the cushion cap top of pile body；
A3, the casting concrete on steel reinforcement cage.
Among one embodiment: the inside and outside separation layer all uses bamboo slab rubber.
Among one embodiment: the inside and outside separation layer is strapped in steel reinforcement cage by iron wire.
Among one embodiment: the pile crown absolute altitude is not higher than interior separation layer bottom end.
Among one embodiment: the spacing between the inside and outside separation layer bottom end and cushion cap top is 5-15mm.
Among one embodiment: the broken pile head part further includes the B0 before B1, and pile crown absolute altitude is marked on pile body.
The technical program compared with the background art, it has the following advantages:
By all main reinforcements of inside and outside separation layer overall isolation pile crown and bonding for concrete, when broken pile head, first abolishes pile crown
The concrete parts being located at outside outer separation layer, remove outer separation layer, break straight steel reinforcement cage main reinforcement, be truncated and be located at from pile crown absolute altitude
Pile crown in interior separation layer can be hung oneself from pile body except pile crown, and structure is simple, and easy construction is quick, reinforcing bar will not cause deformation,
Damage, substantially increases the straight rate of reinforcing bar.
The construction method of broken pile head can more save the time and increase economic efficiency, and more can guarantee engineering total quality, specifically
For can have the following technical effects: 1. construction efficiency is high；2. after pile crown is cut, being easy to be lifted away from foundation pit；3. pile crown
It can be in risk of the early stage excision without damaging stake；4. avoiding the damage to the pile foundation reinforcing bar for going deep into cushion cap part；⑤
The health and safety of worker is effectively protected, without dust and noise.
Inside and outside separation layer all uses bamboo slab rubber, that is, is able to achieve isolation, and destruction is facilitated to remove.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the steel reinforcement cage of specific embodiment.
Fig. 2 is the structural schematic diagram of separation layer inside and outside steel reinforcement cage is installed of specific embodiment.
Fig. 3 is the schematic diagram of the casting concrete of specific embodiment.
Fig. 4 is the structural schematic diagram of the outer separation layer of dismounting of specific embodiment.
Fig. 5 is the structural schematic diagram of the truncation pile crown of specific embodiment.
Fig. 6 is the schematic diagram after the broken pile head of specific embodiment.
Specific embodiment
A kind of construction method of broken pile head, including pile body moulding section and broken pile head part.
Fig. 1 to Fig. 3 is please referred to, the pile body moulding section, comprising:
A1, prepares steel reinforcement cage 10, and steel reinforcement cage 10 includes several main reinforcements 11, several circumferentially-spaced arrangements of main reinforcement 11,
And main reinforcement 11 pushes up end bend setting；
A2 installs inside and outside separation layer 21,22, and interior separation layer 21 is installed in steel reinforcement cage 10, and outer separation layer 22 is enclosed in steel
Outside muscle cage 10, inside and outside separation layer 21,22 and steel reinforcement cage 10 are connected, inside and outside separation layer 21,22 tops flush and are located at
10 top end part of steel reinforcement cage, inside and outside separation layer 21,22 bottom ends flush and are higher than the cushion cap top of pile body, such as inside and outside separation layer 21,22
Bottom end is higher than cushion cap top 10cm or so；Several main reinforcements 11 are located between inside and outside separation layer 21,22；Wherein, cushion cap top is
For design of pile top absolute altitude.Wherein: the inside and outside separation layer 21,22 all uses bamboo slab rubber, thickness for example 3mm；The inside and outside separation layer 21,
22 is strapped in steel reinforcement cage 10, bamboo slab rubber and main reinforcement fixation by iron wire, can prevent bamboo slab rubber from falling off or gliding.This is specific real
Apply among mode: inside and outside separation layer 21,22 height are according to depending on pile crown height, and if pile crown height is 1 meter, then inside and outside separation layer is high
Spend 90cm；
A3, the casting concrete 30 on steel reinforcement cage 10, the cylinder constituted after casting are that bored concrete pile top mark is high, bored concrete pile top mark
Part between high and design of pile top absolute altitude is pile crown 31.
Fig. 4 to fig. 6 is please referred to, the broken pile head part, comprising:
B0 after excavating cushion cap, marks pile crown absolute altitude on pile body, which need to be not less than the cushion cap top of pile body,
And be not higher than interior separation layer bottom end, such as pile crown absolute altitude coating Red paint, red paint fill " the cushion cap top " and " it is inside and outside every
Part between absciss layer bottom end "；
B1 abolishes the concrete parts of pile crown being located at outside outer separation layer according to the pile crown absolute altitude, removes outer separation layer, should
It destroys the concrete section and is divided into red paint centre or more；
B2 breaks the bending part on straight 11 top of steel reinforcement cage main reinforcement；
B3, truncation is located at the pile crown in interior separation layer from pile crown absolute altitude, that is, the concrete in interior separation layer.
B4 is hung oneself from pile body except pile crown using hanging device.
As needed, before excavating cushion cap, excavating sideline is released in advance, and identifies pile crown present position, avoids excavating
Pile crown is damaged in journey.
Among present embodiment: 1, bamboo slab rubber and main reinforcement fixation, to prevent from bamboo slab rubber from falling off or be snapped down to hold
In platform, bamboo slab rubber is avoided to go deep into pile crown lower part concrete.And rising of steel cage or decline need to be prevented in descending reinforcing cage.2, exist
Bamboo slab rubber need to be protected when descending reinforcing cage, downcomer and other operations, prevents bamboo slab rubber damage from increasing pile crown and abolishes difficulty.3, pile crown
It needs that stake top is made to anchor into cushion cap such as 10cm after abolishing, that is, such as 10cm higher than cushion cap bottom absolute altitude of the stake top absolute altitude after abolishing, and is abolishing
Eye-catching red paint label is carried out before operation on pile body.Pile crown needs to remove bamboo slab rubber around steel reinforcement cage during abolishing, and prevents
Only bamboo slab rubber residue pours in cushion cap.
Among present embodiment: a kind of construction method of broken pile head: can have the following technical effects: 1, secure side
Face: this engineering method can effectively reduce portable huge tremble of pneumatic equipment and damage the wrist and arm of operator, reduce noise
And dust pollution.2, in terms of quality: pile crown concrete and main reinforcement do not bond, after excavation of foundation pit, when cutting pile crown, not into
The overburden operation of row reinforcing bar and concrete reduces construction cost, it is ensured that pile foundation reinforcing bar so that greatly speeding up pile crown cuts speed
It is smooth, beautiful to abolish rear pile foundation top surface for quality.3, in terms of benefit: the advantages of technique, is easy to operate, and corollary equipment is few,
Construction personnel is acceptant, and can expertly operate quickly.Pile crown concrete and main reinforcement do not bond, in excavation of foundation pit
Afterwards, when cutting pile crown, without the overburden operation of reinforcing bar and concrete, so that greatly speeding up pile crown cuts speed, construction is reduced
Cost.Such as: the method is used, equipment is reduced, such as reduces pneumatic pick, reduce personnel, shorten the construction period, greatly improve stake
The efficiency that head is abolished, reduces construction cost.
The above is only the preferred embodiment of the present invention, the range implemented of the present invention that therefore, it cannot be limited according to, i.e., according to
Equivalent changes and modifications made by the invention patent range and description, should still be within the scope of the present invention.
Claims (7)
1. a kind of construction method of broken pile head, including pile body moulding section and broken pile head part；It is characterized by:
Inside and outside separation layer is first installed in the pile body moulding section on the position of the correspondence pile crown of steel reinforcement cage, after pour coagulation again
Soil, interior separation layer are installed in steel reinforcement cage, and outer separation layer is enclosed in outside steel reinforcement cage, and several main reinforcements that steel reinforcement cage has are located in interior
Between outer separation layer；
The broken pile head part includes:
B1 abolishes the concrete parts of pile crown being located at outside outer separation layer, removes outer separation layer；
B2 breaks straight steel reinforcement cage main reinforcement；
B3, truncation is located at the pile crown in interior separation layer from pile crown absolute altitude, which is not less than the cushion cap top of pile body；
B4 hangs oneself from pile body except pile crown.
2. a kind of construction method of broken pile head according to claim 1, it is characterised in that: the pile body moulding section includes:
A1, prepares steel reinforcement cage, and steel reinforcement cage includes several main reinforcements, several circumferentially-spaced arrangements of main reinforcement, and main reinforcement end is curved
Song setting；
A2 installs inside and outside separation layer, inside and outside separation layer and steel reinforcement cage is connected, inside and outside separation layer top is located at steel reinforcement cage
Top end part, inside and outside separation layer bottom end are higher than the cushion cap top of pile body；
A3, the casting concrete on steel reinforcement cage.
3. a kind of construction method of broken pile head according to claim 1, it is characterised in that: the inside and outside separation layer all uses bamboo
Offset plate.
4. a kind of construction method of broken pile head according to claim 1, it is characterised in that: the inside and outside separation layer passes through iron wire
It is strapped in steel reinforcement cage.
5. a kind of construction method of broken pile head according to claim 1, it is characterised in that: the pile crown absolute altitude not higher than it is interior every
Absciss layer bottom end.
6. a kind of construction method of broken pile head according to claim 1, it is characterised in that: the inside and outside separation layer bottom end with hold
Spacing between platform top is 5-15mm.
7. a kind of construction method of broken pile head according to claim 1, it is characterised in that: the broken pile head part further includes position
B0 before B1 marks pile crown absolute altitude on pile body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910137578.4A CN109944246A (en) | 2019-02-25 | 2019-02-25 | A kind of construction method of broken pile head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910137578.4A CN109944246A (en) | 2019-02-25 | 2019-02-25 | A kind of construction method of broken pile head |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042115A (en) * | 2019-12-23 | 2020-04-21 | 荆州市华升新型材料股份有限公司 | Pile head protective layer of concrete cast-in-place pile and construction method thereof |
| CN113250195A (en) * | 2021-06-21 | 2021-08-13 | 邯郸市水利工程处 | Method for integrally isolating pile head breaking through steel bars in advance |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586968A (en) * | 2014-10-24 | 2016-05-18 | 中铁十四局集团有限公司 | Novel construction technology for removing pile heads of bored piles |
-
2019
- 2019-02-25 CN CN201910137578.4A patent/CN109944246A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586968A (en) * | 2014-10-24 | 2016-05-18 | 中铁十四局集团有限公司 | Novel construction technology for removing pile heads of bored piles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042115A (en) * | 2019-12-23 | 2020-04-21 | 荆州市华升新型材料股份有限公司 | Pile head protective layer of concrete cast-in-place pile and construction method thereof |
| CN113250195A (en) * | 2021-06-21 | 2021-08-13 | 邯郸市水利工程处 | Method for integrally isolating pile head breaking through steel bars in advance |
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Application publication date: 20190628 |
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