CN115059062B - Chiseling structure and chiseling method for concrete pile head - Google Patents
Chiseling structure and chiseling method for concrete pile head Download PDFInfo
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- CN115059062B CN115059062B CN202210853507.6A CN202210853507A CN115059062B CN 115059062 B CN115059062 B CN 115059062B CN 202210853507 A CN202210853507 A CN 202210853507A CN 115059062 B CN115059062 B CN 115059062B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
Abstract
The application relates to the field of pile foundation construction, in particular to a chiseling structure of a concrete pile head, which comprises a sleeve sleeved on each main rib at the upper end of a reinforcement cage, wherein one end of the sleeve is in a closed state, and the opening end of the sleeve is correspondingly inserted into the main ribs; the application also relates to a chiseling method of the concrete pile head, which comprises the following steps: s1: manufacturing a reinforcement cage; s2: installing a sleeve; s3: installing a separation assembly; s4: installing a reinforcement cage and pouring concrete; s5: chiseling the pile head; s6: and separating the pile head, arranging a lifting appliance on the cut pile head, lifting the pile body by adopting lifting equipment, and finally separating the pile body from the pile head. The application has the effect of protecting the pile head main rib from damage when the concrete is chiseled.
Description
Technical Field
The application relates to the field of pile foundation construction, in particular to a chiseling structure and a chiseling method of a concrete pile head.
Background
The existing bored concrete pile foundation is used as a form of foundation of a building and a construction, and is widely applied to the civil engineering field at present due to the characteristics of bearing reliability, flexible construction, mature process, strong stratum adaptability and the like. Before pouring concrete, a worker firstly excavates a preset pile hole at a position required by the design of a construction site, then binds a main reinforcement, a stiffening hoop and a spiral hoop into a reinforcement cage according to the diameter and the depth of the pile hole, finally hangs the bound reinforcement cage into the pile hole, and the technical specification of building pile foundation (JGJ 94-2008) prescribes that when pouring the bored concrete pile, the elevation of the top of the bored concrete pile is 0.5-1.0 m higher than the elevation of the designed pile top so as to ensure the strength of the concrete of the pile head, but the pile head part higher than the design elevation of the pile top must be chiseled off during the construction of the follow-up procedure. Therefore, pile head breaking gradually becomes an important control project in the construction project of the cast-in-place pile.
At present, pile heads of pile foundations break out slurry concrete above elevation, concrete of the pile heads is broken out by using an air pick electric pick or a breaking hammer, main steel bars around a circle after the concrete is broken are deformed and bent, the bent and deformed steel bars are adjusted and straightened before subsequent construction, and when the steel bars are straightened, a plurality of constructors mainly use a steel bar spanner to adjust and pry a little by little, so that constructors in the pile foundations are not easy to enter, the site is small, and the position is inconvenient; the method is to use a crane to hoist the annular extrusion machine for application, and use the annular hydraulic extrusion machine to crush concrete, so that the damage to the steel bars is larger, the steel bars on the pile head can be cut off directly sometimes, the steel bars are bent and deformed more, and the construction quality and the construction progress can be influenced directly, so that the construction cost is increased.
Disclosure of Invention
In order to avoid affecting the steel bars when chiseling the concrete of the pile foundation pile head, the application provides a chiseling structure and a chiseling method of the concrete pile head.
In a first aspect, the present application provides a chiseling structure for a concrete pile head, which adopts the following technical scheme:
the chiseling structure of the concrete pile head comprises a sleeve sleeved on each main rib at the upper end of a reinforcement cage, one end of the sleeve is in a closed state, and the open end of the sleeve is correspondingly inserted into the main ribs.
By adopting the technical scheme, the sleeve is arranged on the main reinforcements exceeding the design requirement elevation, and the steel bars in the sleeve cannot be contacted with the concrete when the concrete is poured, so that the concrete on each main reinforcement does not need to be chiseled by mechanical equipment when the concrete exceeding the design requirement elevation is chiseled later, and the damage to the main reinforcements is avoided.
Optionally, a sealing element for sealing the open end of the sleeve is arranged between the open end of the sleeve and the reinforcing steel bar.
Through adopting above-mentioned technical scheme, the sealing member that sets up at the sleeve pipe open end can prevent that magma and concrete from entering into the sleeve pipe inside when pouring the concrete.
Optionally, the sealing member includes the silica gel sealing washer of setting on sleeve pipe open end inner wall, the gap department between sleeve pipe open end and the reinforcing bar is cooperateed to the silica gel sealing washer.
By adopting the technical scheme, the application adopts the silica gel sealing ring for sealing, and the silica gel sealing ring is easy to compress and deform and has great elasticity, so that the sleeve arranged can adapt to steel bars with different diameter specifications; in addition, after the silica gel sealing ring is hooped to the steel bar, the sleeve can be fixed to the main steel bar, so that the sleeve is prevented from gradually separating from the main steel bar under the action of floating slurry on the upper layer of the concrete after concrete is poured.
Optionally, the sleeve is made of plastic.
Through adopting above-mentioned technical scheme, because the sleeve pipe only plays the guard action to the main muscle of concrete pile head position department, when concrete upper portion was chiseled away, the sleeve pipe also can be cleared up in the lump, and the sleeve pipe is disposable, consequently, the sleeve pipe of adopting the plastics material to make can practice thrift the input of fund, avoids extravagant, and the sleeve pipe is also very easily found and conveniently processed when on-the-spot construction.
Optionally, the sleeve is internally filled with a filler for protecting the reinforcing steel bars.
Through adopting above-mentioned technical scheme, can play the effect of protection principal muscle at the inside filler that fills of sleeve pipe, prevent that the sleeve pipe opening from sealing under the condition not tight, the concrete slurry from entering into the sleeve pipe is inside, in addition, prevents that the sleeve pipe from compressing tightly the sleeve pipe to the principal muscle after receiving the extrusion of concrete, is unfavorable for follow-up break away from on the principal muscle.
Optionally, a separation component for separating concrete is arranged in the reinforcement cage near the upper end, and the separation component is connected with a stiffening hoop at the upper end of the reinforcement cage.
Through adopting above-mentioned technical scheme, after pouring concrete, separate the subassembly and can be inside the steel reinforcement cage, separate into pile body and pile head two parts with concrete, when follow-up concrete to the pile head chisel, the pile head can be very convenient from separating the position department of subassembly and produce the fracture.
Optionally, the separation subassembly includes the plastic film of fixed connection on the stiffening hoop, the plastic film has toughness, one side that the plastic film kept away from the stiffening hoop is provided with tightens up the piece, tightens up the piece and can pull apart the plastic film and separate into pile head and pile body two parts with the concrete of pouring.
Through adopting above-mentioned technical scheme, after concrete exceeds the horizontal position that the plastic film was located at the in-process of pouring, constructor through operating the tightening member, with plastic film gradually at the inside horizontal stretching expansion of steel reinforcement cage to make the inside concrete of reinforcing bar separate into upper and lower two parts by the plastic film, and the plastic film itself that sets up is comparatively smooth, can not produce the adhesion with the concrete between, in the process of follow-up chisel removing the pile head, constructor only need with the outside round concrete chisel of steel reinforcement cage remove can, then just can transfer away the concrete of whole pile head, improved the efficiency of chisel removing pile head concrete greatly.
Optionally, the tightening member comprises a plurality of traction rings arranged at the inner edge of the plastic film, a plurality of traction wires are arranged in the rings of the traction rings in a penetrating manner, and wire heads of the traction wires extend out of the reinforcement cage.
Through the technical scheme, the plastic film can be gradually unfolded in the concrete in the reinforcement cage by only gradually tightening the traction wires when the plastic film is stretched and unfolded through the traction rings and the traction wires penetrating through the traction rings, and the traction rings and the traction wires are simple in structure, so that the stress area is small and the plastic film cannot be influenced by the blocking of the concrete when the plastic film is stretched and unfolded in the poured concrete.
In a second aspect, the present application provides a method for chiseling a concrete pile head, which adopts the following technical scheme:
the chiseling method of the concrete pile head comprises the following steps:
s1: manufacturing a reinforcement cage, binding or welding a stiffening hoop, a main reinforcement and a spiral stirrup according to design requirements according to the diameter and the depth of a pile hole and the anchoring length, and reserving enough anchoring length on the main reinforcement above the elevation of the concrete pile;
s2: installing a sleeve, cutting the sleeve into a fixed length according to the elevation designed by the main rib, sealing one end of the sleeve, and then correspondingly inserting the opening end of the sleeve into the main rib;
s3: installing a separation assembly, fixing the outer edge of the plastic film and the stiffening hoop, penetrating the traction wire into each traction ring correspondingly, and penetrating the end of the traction wire far away from the reinforcement cage out of the reinforcement cage;
s4: installing a reinforcement cage and pouring concrete, hoisting the reinforcement cage with the sleeve and the separation assembly installed in a pile hole, pouring concrete into the pile hole after the reinforcement cage is inspected to be qualified, and pulling a pulling wire after the concrete is poured, so that the plastic film separates the concrete into a pile body and a pile head;
s5: chiseling the pile head, scribing the exterior of the concrete according to the elevation required by design after the concrete in the pile hole reaches a certain strength, chiseling along the scribing position, and breaking the position between the pile body and the pile head along the scribing position and the position of the plastic film;
s6: and separating the pile head, arranging a lifting appliance on the cut pile head, lifting the pile body by adopting lifting equipment, and finally separating the pile body from the pile head.
Optionally, in step S2, the sleeve is intercepted by using a hot-melt cutter, where the hot-melt cutter includes a cutting component for cutting a pipe and a hot-melt component for closing a cutting surface of the sleeve.
By adopting the technical scheme, when the hot-melt cutter is used for cutting the sleeve sleeved on each main rib, the whole sleeve can be cut off by adopting one device, one end of the cut sleeve is sealed, and the efficiency of site construction is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the sleeve sleeved on the main reinforcement at the upper end of the reinforcement cage can play a role in protecting the reinforcement, so that the concrete of the pile head can be more conveniently chiseled from the pile body when the pile head is chiseled later; the sealing piece is arranged at the opening end of the sleeve, so that the concrete can be prevented from entering the sleeve when the concrete is poured;
2. when concrete is poured into the pile hole, the concrete in the reinforcement cage is divided into the pile head and the pile body in advance through the separation assembly, and after the concrete is solidified, the concrete of the whole pile head can be separated from the pile body only by chiseling a circle of concrete outside the reinforcement cage, so that the efficiency of chiseling the concrete of the pile head is greatly improved.
Drawings
FIG. 1 is a schematic view showing the overall structure of an initial state of a plastic film according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a silicone seal embodying an embodiment of the present application;
FIG. 3 is a schematic view showing a state in which a plastic film is stretched and unfolded according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a hot melt cutter embodying an embodiment of the present application;
fig. 5 is a diagram of method steps embodying pile head chisel removal according to an embodiment of the application.
Reference numerals illustrate: 1. a sleeve; 2. a silica gel sealing ring; 3. a partition assembly; 31. a plastic film; 32. a tightening member; 321. a traction ring; 322. a traction wire; 4. a partition plate; 5. a hot melt cutter; 51. a base; 52. cutting off the assembly; 521. a first scissor handle; 522. a second scissor handle; 523. a blade; 53. a hot melt assembly; 531. a heating unit; 532. heating the sleeve; 533. a guide seat.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The steel reinforcement cage of below in the stake hole comprises many annular distribution and the main muscle of vertical setting, the stiffening hoop and spiral stirrup, main muscle, stiffening hoop and spiral stirrup pass through the form fixed connection of welding or ligature, when ligature or welding steel reinforcement cage, the annular direction of vertical main muscle along the stiffening hoop equally distributes, spiral stirrup is according to the even spiral distribution of design interval along the length direction of vertical main muscle, after pouring concrete in the stake hole, need chisel the concrete of concrete pile upper end position to concrete pile upper end spills the reinforcing bar and the connection of major structure and the construction of waterproof operation.
The embodiment of the application discloses a chiseling structure of a concrete pile head. Referring to fig. 1 and 2, a chiseling structure of a concrete pile head includes a sleeve 1 sleeved on each main rib at the upper end of a reinforcement cage, wherein one end of the sleeve 1 is a closed structure, when one end of the sleeve 1 is closed, the sleeve 1 can be melted and sealed in a heating manner, in addition, the end of the sleeve 1 can be bent, and a tool such as an adhesive tape is used for sealing the end of the sleeve 1, so that one end of the sleeve 1 is sealed, and concrete is prevented from entering the sleeve 1 from the upper end of the sleeve 1 when concrete is poured; during installation, the staff aligns the open end of sleeve pipe 1 with the main muscle upper end to peg graft on the main muscle, when follow-up downthehole concrete pouring towards the stake, the concrete can not reserve the main muscle contact of design elevation with the steel reinforcement cage upper end, thereby avoided follow-up chisel to remove steel reinforcement cage upper end concrete when causing the damage to the main muscle.
The sleeve 1 is made of plastic materials, and the sleeve 1 is made of plastic materials, so that the sleeve 1 is made of plastic materials, investment of funds can be saved, waste is avoided, the sleeve 1 made of plastic materials is quite common, the sleeve 1 is easy to find in a construction site, processing is more convenient, workers can install the same number of plastic sleeves 1 according to the requirement, one end of the plastic sleeve 1 is more easily sealed, and therefore overall construction efficiency is improved.
Referring to fig. 1 and 2, a sealing member is fixed to an inner wall of an open end of each of the sleeves 1, and the sealing member is provided to prevent concrete from entering the sleeve 1 during a concrete pouring process; in the embodiment of the application, the sealing element comprises the silica gel sealing ring 2 fixed on the inner wall of the sleeve 1, the outer edge of the silica gel sealing ring 2 is fixedly connected with the inner wall of the sleeve 1, the inner diameter of the silica gel sealing ring 2 is smaller than the diameter of a steel bar, and the silica gel sealing ring 2 is adopted for sealing, on one hand, the elasticity of the silica gel sealing ring 2 is relatively large and extrusion deformation is easy to generate, when the sleeve 1 is sleeved on a main steel bar, the silica gel sealing ring 2 is extruded, and the silica gel sealing ring 2 can be tightly hooped on the outer wall of the steel bar, so that the sealing between the opening end of the sleeve 1 and the steel bar is more tight, and concrete is prevented from entering the sleeve 1; on the other hand, the inside diameter of the silica gel sealing ring 2 is smaller than the diameter of the steel bar, so that the matched sleeve 1 and the silica gel sealing ring 2 under the same specification can adapt to the steel bars with various different diameters, the adaptability is improved, and the situation that constructors need to independently manufacture the sleeve 1 with different types according to the steel bars with different diameter specifications in site construction is avoided.
Besides the sealing by adopting the silica gel sealing ring 2 in the embodiment of the application, workers in site construction can also adopt the adhesive tape for sealing according to actual needs, and the adhesive tape is used for winding and sealing the opening at the lower end of the sleeve 1 and the main rib, so that concrete can be prevented from entering the sleeve 1.
Further, the filler is filled in the sleeve 1, in the embodiment of the application, the filler can be saw dust, sand or mud and other substances commonly existing in a construction site, when a constructor needs to sleeve the sleeve 1 on the main reinforcement, a proper amount of filler is filled in the sleeve 1, then the sleeve 1 is sleeved on the reinforcement, the filler filled in the sleeve 1 can play a role in protecting the main reinforcement, and the filler filled between the sleeve 1 and the main reinforcement can prevent concrete from entering the sleeve 1 under the condition that the opening at the lower end of the sleeve 1 is not tightly sealed, on the one hand, and on the other hand, because the sleeve 1 is made of plastic materials, after the concrete is poured, the sleeve 1 is extruded on the main reinforcement by the concrete, so that the concrete at the upper end of a reinforcement cage is not easy to be cut off from the main reinforcement later.
Referring to fig. 1, 2 and 3, a separation assembly 3 is arranged at a position which is inside the reinforcement cage and is close to a pile opening, after concrete is poured in a pile hole, the separation assembly 3 can separate the concrete into a pile head and a pile body inside the reinforcement cage, and after the concrete is solidified, constructors need to chisel off the concrete of the pile head; the separation component 3 comprises a plastic film 31 arranged on the uppermost stiffening hoop of the reinforcement cage close to the pile mouth, wherein the plastic film 31 is made of soft materials, the plastic film 31 has toughness and elasticity and can be stretched and unfolded, the plastic film 31 is of a C-shaped annular structure, the plastic film 31 is horizontally arranged in the reinforcement cage, and the outer edge of the plastic film 31 is fixed with the stiffening hoop; the inner edge of the plastic film 31 far away from the stiffening hoop is provided with a tightening member 32, and the tightening member 32 can gradually stretch and spread the plastic film 31 in the steel reinforcement cage so as to form an upper part and a lower part in the steel reinforcement cage; the tightening member 32 comprises a plurality of traction rings 321 fixedly connected to the inner edge of the plastic film 31, the traction rings 321 are uniformly distributed on the inner edge of the plastic film 31, traction wires 322 penetrate through the traction rings 321, two ends of each traction wire 322 can extend out of the interior of the steel reinforcement cage, a conduit for casting concrete is buried below the concrete surface until the concrete casting in the pile hole is completed in the process that a constructor casting concrete towards the interior of the pile hole, after the concrete casting is completed and before the initial setting of the concrete, the constructor can gradually tighten the plastic film 31 towards one side of the steel reinforcement cage under the action of the traction rings 321, so that the concrete in the steel reinforcement cage is divided into two parts of a pile head and a pile body, after the plastic film 31 is fully stretched out, the constructor tightens the two ends of each traction wire 322 onto the steel reinforcement cage, the elasticity of the plastic film 31 is avoided, and the plastic film 31 is rebounded to an initial position; when the pile head concrete is chiseled later, the plastic film 31 can prevent the concrete of the pile head and the pile body from adhering to play a role in lubrication when the pile head and the pile body are separated, so that the concrete pile head can be more easily chiseled from the concrete pile body.
Referring to fig. 1, 2 and 3, further, be provided with a plurality of division boards 4 made by plastic materials on the main muscle on the steel reinforcement cage, a plurality of division boards 4 are along steel reinforcement cage circumference evenly distributed, division board 4 level extends towards the steel reinforcement cage outside, division board 4 and plastic film 31 are in same horizontal position, and two adjacent main muscle can pass division board 4, the lower surface of division board 4 and the contact of the stiffening hoop at steel reinforcement cage uppermost, after the concrete pouring in the stake hole is accomplished, division board 4 can separate the concrete into pile head and pile body two parts equally, when follow-up chisel removes the pile head, constructor adopt the breaker to extrude the breakage along division board 4, make the outside concrete of steel reinforcement cage can more easily separate concrete pile head and concrete pile body under the effect of division board 4, make the fracture surface between concrete pile head and the concrete pile body more flush.
The embodiment of the application also discloses a chiseling method of the concrete pile head. Referring to fig. 3, 4 and 5, a method of chiseling a concrete pile head includes the steps of:
s1: manufacturing a reinforcement cage, welding and fixing or binding and fixing main reinforcements, stiffening hoops and spiral hoops by constructors according to the design requirement of the reinforcement cage, reserving the length required to be anchored for the vertical main reinforcements above the elevation of the pile top according to the requirement, and chiseling concrete above the elevation after pouring concrete is completed.
S2: installing the sleeve 1, cutting the whole plastic sleeve 1 into a plurality of fixed lengths according to the height of the main reinforcement exceeding the elevation required by design, closing one end of the sleeve 1 by constructors after the sleeve 1 is cut, cleaning the interior of the sleeve 1, avoiding impurities in the sleeve 1, and correspondingly inserting the other end of the sleeve 1 onto the main reinforcement;
when the sleeve 1 sleeved on each main rib is cut, a hot melt cutter 5 which is convenient for cutting the whole sleeve 1 is arranged, the hot melt cutter 5 comprises a base 51, a cutting component 52 used for cutting the sleeve 1 and a hot melt component 53 used for sealing one end of the cut sleeve 1, the cutting component 52 and the hot melt component 53 are both arranged on the base 51, the cutting component 52 and the hot melt component 53 are arranged on two sides of the base 51, the cutting component 52 comprises a first cutting handle 521, a second cutting handle 522 and a blade 523, the first cutting handle 521 is fixedly connected with the base 51, the blade 523 is provided with a pair of blades which are respectively correspondingly arranged at the same end of the first cutting handle 521 and the second cutting handle 522, and when the sleeve 1 needs to be cut, a constructor can cut the sleeve 1 by pressing the second cutting handle 522 through the blade 523 and the two blades 523; the hot-melt module 53 includes the heating unit 531 that fixed connection was on the base 51 and install the heating sleeve 532 on the heating unit 531, the heating unit 531 can generate heat gradually under the state of circular telegram, and on transferring heat to the heating sleeve 532, the tip fixedly connected with annular guide holder 533 on the inner wall of heating sleeve 532 and near heating unit 531, guide holder 533 and heating sleeve 532 are the metal material and make, the cross section of guide holder 533 is triangle-shaped, the direction that the guide holder 533 extends towards heating unit 531 from the open end of heating sleeve 532, the guide holder 533 is the structure of gradually contracting, when the one end of sleeve 1 need carry out the hot-melt seal, constructor inserts the tip of sleeve 1 on the heating sleeve 532, and exert certain force towards the heating sleeve 532 orientation on sleeve 1, under the effect of guide holder 533, the tip of sleeve 1 is heated and gradually contracts, until the tip of sleeve 1 supports to the heating unit 531, and after maintaining certain time, the tip of sleeve 1 is sealed by the hot melt.
After one end of the sleeve 1 is heated and sealed by the hot melting assembly 53, a constructor installs and fixes the silica gel sealing ring 2 on the inner wall of the opening end of the sleeve 1, and after the installation is completed, the constructor fills the filler into the sleeve 1 and inserts the sleeve 1 onto the main rib.
S3: installing the separation component 3, fixing the outer edge of the plastic film 31 and the stiffening hoop at the uppermost layer of the reinforcement cage by constructors, sequentially penetrating the traction wire 322 through a plurality of traction rings 321 on the plastic film 31, and extending the wire heads at the two ends of the traction wire 322 to the outside of the reinforcement cage; in addition, the partition plate 4 is uniformly mounted on the main rib of the reinforcement cage, and the lower surface of the partition plate 4 can be lapped on the stiffening hoop of the uppermost layer of the reinforcement cage.
S4: installing a reinforcement cage and pouring concrete, after the sleeve 1 and the separation assembly 3 are installed on the reinforcement cage, hanging the reinforcement cage and installing the reinforcement cage into a pile hole, after the reinforcement cage is installed and fixed in position and inspected by constructors, pouring concrete into the pile hole, when the concrete is poured, the concrete pouring guide pipe is buried below the concrete liquid level until the concrete in the pile hole is poured completely, after the pouring is completed and before the initial setting of the concrete, constructors gradually tighten the two ends of the traction wire 322, so that the plastic film 31 can be gradually stretched and unfolded towards one side of the reinforcement cage, an upper part and a lower part are formed in the concrete in the reinforcement cage, the concrete above the plastic film 31 is a pile head, the concrete below the plastic film 31 is a pile body, and after the plastic film 31 is stretched towards one side of the reinforcement cage, the two ends of the traction wire 322 are fixed on the reinforcement cage by constructors.
S5: the pile head is chiseled, after the concrete in the pile hole is solidified to reach a certain strength, soil around the pile head is dug away firstly, concrete of the pile head is leaked, then the peripheral surface of the concrete outside the pile head is marked according to the height exceeding the design requirement, circular cutting is carried out along the marking position by cutting equipment or extrusion crushing is carried out at the marking position by a crusher, so that the concrete of the pile head and the pile body outside the reinforcement cage is broken firstly, and then the pile head in the reinforcement cage can be broken along the position of the plastic film 31.
S6: separating pile heads, installing lifting slings on the pile heads by constructors after the pile heads and the pile bodies are separated, separating the pile heads from the pile bodies by adopting lifting equipment, checking main reinforcements by constructors after the pile heads are separated from the pile bodies, and if bending deformed reinforcements exist, slightly straightening by constructors, and then carrying out the next working procedure.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. The utility model provides a chisel removes structure of concrete pile head which characterized in that: the steel reinforcement cage comprises a sleeve (1) sleeved on each main rib at the upper end of the steel reinforcement cage, one end of the sleeve (1) is in a closed state, and the open end of the sleeve (1) is correspondingly inserted into the main ribs; a separation component (3) for separating concrete is arranged in the reinforcement cage close to the upper end, and the separation component (3) is connected with a stiffening hoop at the upper end of the reinforcement cage; the separation assembly (3) comprises a plastic film (31) fixedly connected to the stiffening hoop, the plastic film (31) has toughness, one side, far away from the stiffening hoop, of the plastic film (31) is provided with a tightening member (32), and the tightening member (32) can pull the plastic film open and separate poured concrete into two parts, namely a pile head and a pile body.
2. A concrete pile head chiseling structure according to claim 1, wherein: a sealing piece for sealing the open end of the sleeve (1) is arranged between the open end of the sleeve (1) and the reinforcing steel bar.
3. A concrete pile head chiseling structure according to claim 2, wherein: the sealing member is including setting up silica gel sealing washer (2) on sleeve pipe (1) open end inner wall, silica gel sealing washer (2) cooperation is in the gap department between sleeve pipe (1) open end and the reinforcing bar.
4. A concrete pile head chiseling structure according to claim 1, wherein: the sleeve (1) is made of plastic.
5. A concrete pile head chiseling structure according to claim 1, wherein: and the sleeve (1) is internally filled with a filler for protecting the reinforcing steel bars.
6. A concrete pile head chiseling structure according to claim 1, wherein: the tightening piece (32) comprises a plurality of traction rings (321) arranged at the inner edge of the plastic film (31), a plurality of traction wires (322) are arranged in the rings of the traction rings (321) in a penetrating mode, and wire heads of the traction wires (322) extend out of the reinforcement cage.
7. A chiseling method of a concrete pile head is characterized by comprising the following steps: the method comprises the following steps:
s1: manufacturing a reinforcement cage, binding or welding a stiffening hoop, a main reinforcement and a spiral stirrup according to design requirements according to the diameter and the depth of a pile hole and the anchoring length, and reserving enough anchoring length on the main reinforcement above the elevation of the concrete pile;
s2: installing a sleeve (1), cutting the sleeve (1) into a fixed length according to the elevation designed by the main reinforcement, sealing one end of the sleeve (1), and then correspondingly inserting the opening end of the sleeve (1) onto the main reinforcement;
s3: installing a separation assembly (3), fixing the outer edge of the plastic film (31) and the stiffening hoop, then correspondingly penetrating a traction wire (322) into each traction ring (321), and penetrating the end of the traction wire (322) far away from the reinforcement cage out of the reinforcement cage;
s4: installing a reinforcement cage and pouring concrete, hoisting the reinforcement cage with the sleeve (1) and the separation assembly (3) installed in a pile hole, pouring concrete into the pile hole after the inspection is qualified, and pulling a traction wire (322) after the concrete is poured, so that the plastic film (31) separates the concrete into a pile body and a pile head;
s5: chiseling the pile head, scribing outside the concrete according to the elevation required by design after the concrete in the pile hole reaches a certain strength, chiseling along the scribing position, and breaking the position between the pile body and the pile head along the scribing position and the position of the plastic film (31);
s6: and separating the pile head, arranging a lifting appliance on the cut pile head, lifting the pile body by adopting lifting equipment, and finally separating the pile body from the pile head.
8. The method for chiseling a concrete pile head according to claim 7, wherein: in the step S2, the sleeve (1) is intercepted by adopting a hot melt cutter (5) which is arranged, wherein the hot melt cutter (5) comprises a cutting assembly (52) for cutting a pipe and a hot melt assembly (53) for closing a cutting surface of the sleeve (1).
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| CN202210853507.6A CN115059062B (en) | 2022-07-20 | 2022-07-20 | Chiseling structure and chiseling method for concrete pile head |
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| CN202210853507.6A CN115059062B (en) | 2022-07-20 | 2022-07-20 | Chiseling structure and chiseling method for concrete pile head |
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| CN115059062B true CN115059062B (en) | 2023-09-22 |
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2022
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343115A (en) * | 2014-11-13 | 2015-02-11 | 中交隧道工程局有限公司 | Structure and method for integrally breaking pile head of pile foundation |
| CN211498832U (en) * | 2019-07-30 | 2020-09-15 | 南通华新建工集团有限公司 | Bored pile head |
| CN113293755A (en) * | 2021-05-28 | 2021-08-24 | 福建九鼎建设集团有限公司 | Pile head isolation device and construction operation method thereof |
| CN114045830A (en) * | 2021-12-24 | 2022-02-15 | 三门峡市公路局 | Pile head integral stripping and breaking device and construction method |
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