CN114837182A - Construction method for breaking and removing dummy pile head without circular cutting - Google Patents
Construction method for breaking and removing dummy pile head without circular cutting Download PDFInfo
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- CN114837182A CN114837182A CN202210391177.3A CN202210391177A CN114837182A CN 114837182 A CN114837182 A CN 114837182A CN 202210391177 A CN202210391177 A CN 202210391177A CN 114837182 A CN114837182 A CN 114837182A
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- Prior art keywords
- pile head
- concrete
- pile
- construction method
- foundation
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 239000000701 coagulant Substances 0.000 claims description 5
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 3
- 229930006000 Sucrose Natural products 0.000 claims description 3
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 3
- LSVVNVHHHMEPJZ-UHFFFAOYSA-L [Na+].[Na+].[O-]S(=O)(=O)SS([O-])(=O)=O Chemical compound [Na+].[Na+].[O-]S(=O)(=O)SS([O-])(=O)=O LSVVNVHHHMEPJZ-UHFFFAOYSA-L 0.000 claims description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 3
- 239000008103 glucose Substances 0.000 claims description 3
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 3
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 3
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 239000005720 sucrose Substances 0.000 claims description 3
- 239000011975 tartaric acid Substances 0.000 claims description 3
- 235000002906 tartaric acid Nutrition 0.000 claims description 3
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 2
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 2
- 229920005552 sodium lignosulfonate Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 239000000428 dust Substances 0.000 abstract description 4
- 230000000979 retarding effect Effects 0.000 description 4
- 229960001436 calcium saccharate Drugs 0.000 description 2
- UGZVNIRNPPEDHM-SBBOJQDXSA-L calcium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Ca+2].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O UGZVNIRNPPEDHM-SBBOJQDXSA-L 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002426 superphosphate Substances 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- 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
-
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
Abstract
The invention discloses a construction method for breaking a virtual pile head without circular cutting, which comprises the steps of spraying a concrete retarder to a pile head part needing to be cleaned by using a high-pressure rotary spraying machine, reacting the retarder with pile head concrete, delaying the setting time of the pile head concrete, not affecting pile base concrete below the pile head concrete, and enabling the pile head concrete not to be finally set after the pile base concrete at the lower part is finally set, so that the pile head concrete is convenient and efficient to clean and chisel, the pile head does not need to be manually and circularly cut, a pile foundation main rib is stripped, the labor demand of pile head concrete chiseling construction is small, the process is simple, the working strength is high, dust and noise can not be generated in the breaking process, and environment and noise disturbing people can not be caused. The invention solves the problems of complicated construction and noise disturbing residents in the conventional virtual pile head circular cutting and removing.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for removing a virtual pile head without circular cutting.
Background
In order to meet the requirements of ultrahigh and large span of modern buildings, the building foundation mostly adopts a pile foundation form, and in the pile foundation construction process, the dummy pile head is particularly important to be treated as a part directly connected with a main body. The traditional virtual pile head processing scheme is characterized in that a pile foundation is subjected to over-grouting at a certain height in the construction process, after the concrete of the pile foundation is finally set, the pile foundation is subjected to girdling along the standard height line of the foundation, the concrete outside a reinforcing steel bar is crushed and stripped, then, holes are drilled around the pile foundation, a wedge-shaped steel chisel is uniformly punched, the concrete of the pile head is expanded to form a ring-cutting joint section, and then, the pile head is lifted out. In the construction process, pile heads need to be manually and circularly cut, main ribs of pile foundations need to be stripped, holes and expansion joints need to be punched in the pile heads, the manual demand is large, the working procedures are complex, the working strength is high, dust and noise are generated in the cutting and breaking processes, and environment and noise are easy to disturb residents.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, a construction method for removing the dummy pile head without circular cutting is provided so as to solve the problems that the construction is complicated and the noise disturbs people in the conventional dummy pile head circular cutting removal.
In order to realize the aim, the construction method for breaking the dummy pile head without circular cutting comprises the following steps:
pouring pile foundation concrete into the pile hole to reach the basic elevation line;
after pile foundation concrete is poured, pile head concrete is over-poured above a foundation elevation line of the pile hole, and simultaneously, a coagulant is jet-sprayed in the pile head concrete at high pressure, so that two concrete structures with different solidification times are formed above and below the foundation elevation line, and the pile head concrete is not finally solidified after the pile foundation concrete is finally solidified;
and when the pile foundation concrete is finally set and the pile head concrete is not finally set, chiseling the pile head concrete.
Further, the retarder is any one of calcium lignate, sodium lignate, calcium saccharate, sucrose, citric acid, glucose, tartaric acid, sodium trithionate, polyvinyl alcohol, hydroxymethyl cellulose or calcium superphosphate.
Further, the step of high-pressure rotary spraying of the coagulant in the pile head concrete comprises:
measuring and marking the basic height marking line through a measuring ruler rod;
installing the high-pressure rotary spraying machine in place;
putting a drill bit of the high-pressure rotary spraying machine down to the basic elevation line;
and uniformly spraying the retarder through the rotary spraying machine, so that the retarder and the pile head concrete are uniformly mixed and react to delay the setting time of the pile head concrete.
Further, when the pile head concrete is chiseled, the pile head concrete is formed at one time by using a manual pick.
The construction method for removing the virtual pile head without the circular cutting has the advantages that the high-pressure rotary spraying machine is utilized to spray the concrete retarder to the part of the pile head needing to be cleaned, the retarder reacts with the pile head concrete to delay the setting time of the pile head concrete, pile foundation concrete below the pile head concrete is not influenced, after the lower part of the pile foundation concrete is finally set, the pile head concrete is not finally set, the pile head concrete is further conveniently and efficiently cleaned and chiseled, the pile head does not need to be manually and circularly cut, a main reinforcement of a pile foundation is stripped, the manual demand of chiseling construction of the pile head concrete is small, the working procedure is simple, the working strength is high, dust and noise cannot be generated in the chiseling process, and environment and noise disturbing people are not caused.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a pile foundation according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the invention provides a construction method for removing a dummy pile head without cutting around, which comprises the following steps:
s1: and pouring pile foundation concrete 1 into the pile hole to a foundation elevation line A.
S2: after the pile foundation concrete is poured, pile head concrete 2 is over-poured above the foundation elevation line of the pile hole, and simultaneously, coagulant is sprayed in the pile head concrete in a high-pressure rotary mode, so that two concrete structures with different solidification times are formed above and below the foundation elevation line, and after the pile foundation concrete is finally solidified, the pile head concrete is not finally solidified.
The method comprises the following steps of:
s21, measuring and marking a basic height line through a measuring rod;
s22, installing the high-pressure rotary spraying machine 3 in place;
s23, putting a drill bit of the high-pressure jet grouting machine down to the basic elevation line;
and S24, uniformly spraying the retarder through the rotary spraying machine, so that the retarder is uniformly mixed with the pile head concrete and reacts to delay the setting time of the pile head concrete.
After the pile foundation concrete is poured, the retarder is rotationally sprayed in the designated height of the pile head by using the high-pressure rotary spraying machine, the setting time of the pile head concrete is prolonged, a setting time difference is formed between the pile head concrete and the pile foundation concrete at the lower part of the basic height marking line A, and the pile head concrete is cleaned by using the time difference.
In this embodiment, the retarder is any one of calcium lignosulfonate, sodium lignosulfonate, calcium saccharate, sucrose, citric acid, glucose, tartaric acid, sodium trithionate, polyvinyl alcohol, hydroxymethyl cellulose, or calcium superphosphate. Specifically, the retarding effects of the various retarders are shown in tables 1 and 2 below.
TABLE 1 retarding effect of retarder and retarding water reducer
TABLE 1 retardation effect of retarder and retarding water reducer
TABLE 2 Cement physical Properties of different amounts of blended superphosphate
S3: and when the pile foundation concrete is finally set and the pile head concrete is not finally set, chiseling the pile head concrete.
When the pile head concrete is chiseled, the manual pickaxe is used for forming the pile head concrete at one time.
The construction method of the invention can be used for removing the virtual pile head without ring cutting, the high-pressure rotary spraying machine is used for spraying the concrete retarder to the part of the pile head to be cleaned, the retarder reacts with the pile head concrete to delay the setting time of the pile head concrete, the pile base concrete below the pile head concrete is not influenced, after the lower part of the pile base concrete is finally set, the pile head concrete is not finally set, so that the pile head concrete is convenient and efficient to clean and chisel, the pile head is not required to be manually and annularly cut, the main reinforcement of a pile foundation is stripped, the labor requirement for chiseling the pile head concrete is small, the process is simple, the working strength is high, and no dust and noise are generated in the chiseling process, namely, the environment and noise are not disturbed.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (4)
1. A construction method for breaking and removing a dummy pile head without girdling is characterized by comprising the following steps:
pouring pile foundation concrete into the pile hole to reach the basic elevation line;
after pile foundation concrete is poured, pile head concrete is over-poured above a foundation elevation line of the pile hole, and simultaneously, a coagulant is jet-sprayed in the pile head concrete at high pressure, so that two concrete structures with different solidification times are formed above and below the foundation elevation line, and the pile head concrete is not finally solidified after the pile foundation concrete is finally solidified;
and when the pile foundation concrete is finally set and the pile head concrete is not finally set, chiseling the pile head concrete.
2. The construction method of claim 1, wherein the retarder is any one of calcium lignosulfonate, sodium lignosulfonate, sugar, sucrose, citric acid, glucose, tartaric acid, sodium trithionate, polyvinyl alcohol, hydroxymethyl cellulose or calcium superphosphate.
3. The construction method of claim 1, wherein the step of performing high-pressure rotary spraying of a coagulant in the pile head concrete comprises:
measuring and marking the basic height marking line through a measuring ruler rod;
installing the high-pressure rotary spraying machine in place;
putting a drill bit of the high-pressure rotary spraying machine down to the basic elevation line;
and uniformly spraying the retarder through the rotary spraying machine, so that the retarder and the pile head concrete are uniformly mixed and react to delay the setting time of the pile head concrete.
4. The construction method of ring-cutting-free virtual pile head of claim 1, wherein the pile head concrete is caused at one time by a manual pick when the pile head concrete is chiseled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210391177.3A CN114837182A (en) | 2022-04-14 | 2022-04-14 | Construction method for breaking and removing dummy pile head without circular cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210391177.3A CN114837182A (en) | 2022-04-14 | 2022-04-14 | Construction method for breaking and removing dummy pile head without circular cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114837182A true CN114837182A (en) | 2022-08-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210391177.3A Pending CN114837182A (en) | 2022-04-14 | 2022-04-14 | Construction method for breaking and removing dummy pile head without circular cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114837182A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314131A (en) * | 1999-04-28 | 2000-11-14 | Mitsuo Oyanagi | Pile head treatment method of concrete pile |
| JP2006037492A (en) * | 2004-07-27 | 2006-02-09 | Takenaka Komuten Co Ltd | Pile head processing construction method of cast-in-place concrete pile |
| CN105735317A (en) * | 2016-03-09 | 2016-07-06 | 中天路桥有限公司 | Construction technology for removing pile heads of cast-in-place piles |
| CN208701688U (en) * | 2018-08-08 | 2019-04-05 | 湖北金扬建设工程有限责任公司 | The device of pore-creating perfusion addition retarder |
| CN111910622A (en) * | 2020-07-13 | 2020-11-10 | 毕竞东 | Construction method of bored pile without pile head |
-
2022
- 2022-04-14 CN CN202210391177.3A patent/CN114837182A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314131A (en) * | 1999-04-28 | 2000-11-14 | Mitsuo Oyanagi | Pile head treatment method of concrete pile |
| JP2006037492A (en) * | 2004-07-27 | 2006-02-09 | Takenaka Komuten Co Ltd | Pile head processing construction method of cast-in-place concrete pile |
| CN105735317A (en) * | 2016-03-09 | 2016-07-06 | 中天路桥有限公司 | Construction technology for removing pile heads of cast-in-place piles |
| CN208701688U (en) * | 2018-08-08 | 2019-04-05 | 湖北金扬建设工程有限责任公司 | The device of pore-creating perfusion addition retarder |
| CN111910622A (en) * | 2020-07-13 | 2020-11-10 | 毕竞东 | Construction method of bored pile without pile head |
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