CN118029370A - Construction method of cast-in-place pile - Google Patents
Construction method of cast-in-place pile Download PDFInfo
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- CN118029370A CN118029370A CN202410243967.6A CN202410243967A CN118029370A CN 118029370 A CN118029370 A CN 118029370A CN 202410243967 A CN202410243967 A CN 202410243967A CN 118029370 A CN118029370 A CN 118029370A
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- pile
- steel
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- sleeve
- cast
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- 238000010276 construction Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000004567 concrete Substances 0.000 claims abstract description 15
- 230000002787 reinforcement Effects 0.000 claims abstract description 13
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000011449 brick Substances 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 5
- 239000002002 slurry Substances 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a construction method of a cast-in-place pile, which relates to the field of building construction and aims at solving the quality problem of a pile body, and the technical scheme is as follows: s1, preparation of construction: pile position measurement and placement, S2, sinking steel pile casing: the winch pulls up the steel heavy hammer to perform ramming, and the steel pile casing simultaneously sinks until the elevation of the pile bottom is designed; s3, ramming and expanding a base material: pulling up a steel heavy hammer, filling a bottom expanding material into the steel protective cylinder in batches, and tamping the heavy hammer; s4, placing a sleeve: measuring the elevation of the pile bottom, and hoisting the sleeve to be placed in the pile casing; s5, placing a reinforcement cage: placing the manufactured reinforcement cage into a sleeve; s6, pouring a pile body: pouring concrete from a steel casing feed inlet, and starting a vibrating hammer to vibrate and densify; s7, tube drawing and pile forming: and (3) starting the vibrating hammer to pull the steel pile casing out of the ground to form a pile, and moving the pile machine to the next pile position. The cast-in-place pile obtained by the construction method of the cast-in-place pile has high quality, and the situations of necking, rib exposing, slurry leakage and the like do not occur.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a cast-in-place pile.
Background
The cast-in-place pile is used as a mature pile foundation construction technology, the pile body is mostly reinforced concrete or plain concrete, and the cast-in-place reinforced concrete pile body has the advantages of convenient and quick construction, obvious defects, complex site geology condition, and easy quality problems of necking, rib exposing, interlayer, slurry leakage, segregation and the like of the pile body in the southern area.
There is therefore a need to propose a new solution to this problem.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a construction method of a cast-in-place pile, and the sleeve is arranged on the outer side of the cast-in-place pile for assisting in cast-in-place pile forming, so that the pile body quality is improved.
The technical aim of the invention is realized by the following technical scheme: a construction method of a cast-in-place pile comprises the following steps:
S1, preparation of construction: measuring and placing a pile position, moving the pile machine to the pile position, aligning the center of the steel pile casing with the center of the pile, and adjusting the verticality of the steel pile casing;
S2, sinking steel pile casing: the winch pulls up the steel heavy hammer to perform ramming, and the steel pile casing simultaneously sinks until the elevation of the pile bottom is designed;
s3, ramming and expanding a base material: pulling up a steel heavy hammer, filling a bottom expanding material into the steel casing in batches, tamping the steel heavy hammer with high energy, and reinforcing a soil layer with a holding force until the penetration degree meets the design requirement;
S4, placing a sleeve: a steel heavy hammer is lifted, the elevation of the pile bottom is measured, and the sleeve is lifted and placed in the pile casing;
S5, placing a reinforcement cage: placing the manufactured reinforcement cage into a sleeve;
s6, pouring a pile body: pouring concrete from a steel casing feed inlet, and starting a vibrating hammer to vibrate and densify;
S7, tube drawing and pile forming: and (3) starting the vibrating hammer to pull the steel pile casing out of the ground to form a pile, and moving the pile machine to the next pile position.
The invention is further provided with: in the step S1, the steel pile casing is a seamless steel pipe, the inner diameter of the steel pile casing is determined according to the designed pile, and the diameter of the steel pile casing is 3-5cm larger than that of the designed pile.
The invention is further provided with: in the step S3, the bottom expanding material is one or more of broken bricks or broken stone or dry cement mortar and dry concrete.
The invention is further provided with: in the step S4, the sleeve is a corrugated pipe, a PLA regenerated pipe or a PVC pipe.
The invention is further provided with: the sleeve is made of degradable materials.
The invention is further provided with: the inner diameter of the sleeve pipe is more than or equal to the designed pile diameter.
In summary, the invention has the following beneficial effects: the invention adopts a bottom expanding mode at the pile bottom before the pile body is formed, thereby greatly improving the vertical bearing capacity of the pile, simultaneously, the sleeve is firstly put in the pile body before the concrete is poured, fundamentally solving the common problem of pile body quality which is easy to occur due to geological problems, and greatly improving the stability of the pile.
Drawings
FIG. 1 is a diagram of step S1 of the present invention;
FIG. 2 is a diagram of step S2 of the present invention;
FIG. 3 is a diagram of step S3 of the present invention;
FIG. 4 is a diagram of step S4 of the present invention;
FIG. 5 is a diagram of step S5 of the present invention;
FIG. 6 is a diagram of step S6 of the present invention;
FIG. 7 is a diagram of step S7 in the present invention.
In the figure: 1. a vibratory hammer; 2. a steel pile casing; 3. a solid hammer; 4. spreading a backing material; 5. a sleeve; 6. and (5) a reinforcement cage.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
A construction method of a cast-in-place pile, as shown in fig. 1 to 7, includes the steps of:
S1, preparation of construction: measuring and placing a pile position, moving the pile machine to the pile position, aligning the center of the steel pile casing with the center of the pile, and adjusting the verticality of the steel pile casing;
S2, sinking steel pile casing: the winch pulls up the steel heavy hammer to perform ramming, and the steel pile casing simultaneously sinks until the elevation of the pile bottom is designed;
s3, ramming and expanding a base material: pulling up a steel heavy hammer, filling a bottom expanding material into the steel casing in batches, tamping the steel heavy hammer with high energy, and reinforcing a soil layer with a holding force until the penetration degree meets the design requirement;
S4, placing a sleeve: a steel heavy hammer is lifted, the elevation of the pile bottom is measured, and the sleeve is lifted and placed in the pile casing;
S5, placing a reinforcement cage: placing the manufactured reinforcement cage into a sleeve;
s6, pouring a pile body: pouring concrete from a steel casing feed inlet, and starting a vibrating hammer to vibrate and densify;
S7, tube drawing and pile forming: and (3) starting the vibrating hammer to pull the steel pile casing out of the ground to form a pile, and moving the pile machine to the next pile position.
In the step S1, the steel pile casing is a seamless steel pipe, the inner diameter of the steel pile casing is determined according to the designed pile, and the diameter of the steel pile casing is 3-5cm larger than that of the designed pile.
In the step S3, the bottom expanding material is one or more of broken bricks or broken stones or dry cement mortar and dry concrete.
In the step S4, the sleeve is a corrugated pipe, a PLA regenerated pipe or a PVC pipe, preferably the sleeve is made of degradable materials, and the sleeve can be naturally digested to expose the pile body after a period of time, and the pile body is completely formed at the moment.
Specific:
Step S1, construction preparation: and (3) using a total station or a GPS to measure and place the pile position, moving the pile driver to the pile position, drawing the pile position with the same diameter as the steel pile casing, aligning the pile center with the pile casing center, and adjusting the verticality of the pile casing by using a leveling rod to finish positioning. As shown in fig. 1, 1 is a vibrating hammer, 2 is a steel casing, and 3 is a solid hammer.
S2, sinking the pipe to the design elevation: and (3) pulling up the solid hammer to perform ramming, synchronously sinking the steel pile casing, penetrating the solid hammer into soil, synchronously sinking the steel pile casing, and keeping the steel pile casing and the column hammer synchronously sinking until the pile bottom elevation is designed, as shown in fig. 2.
Step S3, ramming and expanding the primer: pulling up the solid hammer to pull out the charging hole, filling the expanding bottom material into the steel casing in batches, tamping the column hammer with high energy, determining the adding amount each time according to the sinking amount when the solid hammer is tamped each time, stopping charging after reaching the penetration degree required by design, and as shown in fig. 3, 4 is the expanding bottom material, wherein the expanding bottom material can be broken bricks, broken stone, dry cement mortar, dry concrete, concrete and the like.
Step S4, sleeve placement: and (3) putting the solid hammer on the rear side above the vibrating hammer, measuring the elevation of the pile bottom, putting the sleeve into the steel casing after the elevation meets the requirement, and lifting the reinforcement cage to prepare for placement. As shown in FIG. 4, the 5 in the drawing is a sleeve, the sleeve can be a single-wall corrugated pipe, a PLA regenerated pipe, a PVC pipe and the like, the inner diameter of the sleeve is more than or equal to the designed pile diameter, and the 6 in the drawing is a reinforcement cage.
Step S5, placing a reinforcement cage: the manufactured reinforcement cage is hoisted and placed in the sleeve, as shown in fig. 5.
S6, pouring pile body concrete: concrete is poured from a steel casing feed inlet, and a vibrating hammer is started to vibrate and compact, as shown in fig. 6, wherein 7 is concrete.
Step S7, tube drawing and pile forming: and (3) starting the vibrating hammer to pull the steel pile casing out of the ground to form a pile, and moving the pile machine to the next pile position. As shown in fig. 7.
The pile body bearing capacity is guaranteed by expanding the bottom of the pile, the pile body is protected by the pile casing before the cast-in-place pile is formed, the pile casing is supported by the pile bottom, the cast-in-place pile can not take shape, the cast-in-place pile can be smoothly formed under the protection of the pile casing, the problems of necking down, rib exposing, interlayer, slurry leakage, segregation and the like can not occur, and after the cast-in-place pile is stably formed, the pile body can be completely obtained by eliminating the pile casing through natural decomposition.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (6)
1. The construction method of the cast-in-place pile is characterized by comprising the following steps of:
S1, preparation of construction: measuring and placing a pile position, moving the pile machine to the pile position, aligning the center of the steel pile casing with the center of the pile, and adjusting the verticality of the steel pile casing;
S2, sinking steel pile casing: the winch pulls up the steel heavy hammer to perform ramming, and the steel pile casing simultaneously sinks until the elevation of the pile bottom is designed;
s3, ramming and expanding a base material: pulling up a steel heavy hammer, filling a bottom expanding material into the steel casing in batches, tamping the steel heavy hammer with high energy, and reinforcing a soil layer with a holding force until the penetration degree meets the design requirement;
S4, placing a sleeve: a steel heavy hammer is lifted, the elevation of the pile bottom is measured, and the sleeve is lifted and placed in the pile casing;
S5, placing a reinforcement cage: placing the manufactured reinforcement cage into a sleeve;
s6, pouring a pile body: pouring concrete from a steel casing feed inlet, and starting a vibrating hammer to vibrate and densify;
S7, tube drawing and pile forming: and (3) starting the vibrating hammer to pull the steel pile casing out of the ground to form a pile, and moving the pile machine to the next pile position.
2. A method of constructing a cast-in-place pile according to claim 1, wherein: in the step S1, the steel pile casing is a seamless steel pipe, the inner diameter of the steel pile casing is determined according to the designed pile, and the diameter of the steel pile casing is 3-5cm larger than that of the designed pile.
3. A method of constructing a cast-in-place pile according to claim 1, wherein: in the step S3, the bottom expanding material is one or more of broken bricks or broken stone or dry cement mortar and dry concrete.
4. A method of constructing a cast-in-place pile according to claim 1, wherein: in the step S4, the sleeve is a corrugated pipe, a PLA regenerated pipe or a PVC pipe.
5. A method of constructing a bored concrete pile according to claim 1 or 4, wherein: the sleeve is made of degradable materials.
6. A method of constructing a cast-in-place pile according to claim 4, wherein: the inner diameter of the sleeve pipe is more than or equal to the designed pile diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410243967.6A CN118029370A (en) | 2024-03-04 | 2024-03-04 | Construction method of cast-in-place pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410243967.6A CN118029370A (en) | 2024-03-04 | 2024-03-04 | Construction method of cast-in-place pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118029370A true CN118029370A (en) | 2024-05-14 |
Family
ID=90983857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410243967.6A Pending CN118029370A (en) | 2024-03-04 | 2024-03-04 | Construction method of cast-in-place pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118029370A (en) |
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2024
- 2024-03-04 CN CN202410243967.6A patent/CN118029370A/en active Pending
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