CN115305909A - Stirring drilling rod for reinforcing defective pile in soft foundation construction - Google Patents
Stirring drilling rod for reinforcing defective pile in soft foundation construction Download PDFInfo
- Publication number
- CN115305909A CN115305909A CN202211086410.3A CN202211086410A CN115305909A CN 115305909 A CN115305909 A CN 115305909A CN 202211086410 A CN202211086410 A CN 202211086410A CN 115305909 A CN115305909 A CN 115305909A
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- China
- Prior art keywords
- rod body
- pile
- rod
- stirring
- defective
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000003756 stirring Methods 0.000 title claims abstract description 54
- 230000002950 deficient Effects 0.000 title claims abstract description 37
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 20
- 238000005553 drilling Methods 0.000 title claims description 6
- 239000004568 cement Substances 0.000 claims abstract description 35
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 239000011440 grout Substances 0.000 claims abstract description 5
- 230000036346 tooth eruption Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 abstract description 7
- 239000004035 construction material Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 18
- 230000007547 defect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a stirring drill rod, in particular to a stirring drill rod for reinforcing a defective pile in soft foundation construction, which comprises a rod body, wherein the rod body is of a hollow structure, and the inner diameter of the rod body is slightly smaller than the outer diameter of a pile foundation; the bottom surface of the rod body is provided with cutting teeth which are continuously distributed along the circumferential direction of the rod body; at least one group of stirring blades is arranged on the outer side surface of the rod body, and all the groups of stirring blades are adjacent to the bottom of the rod body and are arranged in parallel in the length direction of the rod body; at least one cement slurry channel is formed on the wall of the rod body, one side grouting port of each cement slurry channel is positioned on the top surface of the rod body, and the other side grout outlet of each cement slurry channel is positioned on the outer side surface of the rod body and is closer to the bottom of the rod body than all the stirring blade groups. The invention solves the technical problem of 'reinforcement of defective piles in soft foundation construction'. The method has the advantages of convenient construction material taking, time-saving and labor-saving construction and the like in the construction process of reinforcing the defective pile.
Description
Technical Field
The invention relates to a stirring drill rod, in particular to a stirring drill rod for reinforcing a defective pile in soft foundation construction.
Background
In the construction process of the weak pile foundation, due to the uncertainty of geological conditions, uncontrollable performance in part of the construction process, possible problems of manual operation, material defects and the like, the final pile is sometimes defective, and the pile foundation is judged to be an unqualified pile during pile foundation detection and cannot be used as a building pile foundation for construction.
In the past, the defective pile can only be discarded and replaced by a newly constructed pile with the same specification, but after the pile foundation engineering is completed, the main equipment is basically moved out of the field, the demand of reinforced concrete and the like of one pile is less, and the pile is transported to the field, so that the transportation cost is relatively high. And the cost of manpower, materials, machinery and time for driving one pile is high.
In addition, the defective pile cannot exert bearing force, but the bearing force is insufficient or unstable due to the defect, and a lot of resources are wasted due to the abandonment of the defective pile.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a stirring drill rod for reinforcing a defective pile in soft foundation construction.
In order to achieve the purpose, the stirring drill rod for reinforcing the defective pile in the construction of the soft foundation comprises a rod body, wherein the rod body is of a hollow structure, and the inner diameter of the rod body is slightly smaller than the outer diameter of a pile foundation; the bottom surface of the rod body is provided with cutting teeth which are continuously distributed along the circumferential direction of the rod body; at least one group of stirring blades is arranged on the outer side surface of the rod body, and all the stirring blade groups are adjacent to the bottom of the rod body and are arranged in parallel in the length direction of the rod body; at least one cement slurry channel is formed on the wall of the rod body, a grouting port on one side of each cement slurry channel is positioned on the top surface of the rod body, and a grout outlet on the other side of each cement slurry channel is positioned on the outer side surface of the rod body and is closer to the bottom of the rod body than all the stirring blade groups.
The utility model provides a preferred, stirring drilling rod that defect stake reinforcement was used in construction of above-mentioned soft foundation, three group's stirring vane of having arranged in parallel in the long direction of the body of rod in its structure, every group stirring vane all contains the three stirring vane of evenly distributed in the circumferencial direction of the body of rod, and three group's stirring vane is interval staggered arrangement in the long direction of the body of rod.
The invention relates to a stirring drill rod for reinforcing a defective pile in the construction of a soft foundation, which can be sleeved on the outer side of the defective pile, adopts a rotating mode to cut the concrete at the outermost edge of the pile foundation of the defective pile through a cutting pick at the end part so as to drill downwards, sprays cement slurry to the soil body around the pile through a cement slurry channel and a slurry outlet in the drilling process, and simultaneously stirs and mixes the soil body and the sprayed cement slurry by a rotating stirring blade so as to reinforce the soil body around the pile, so that a cement soil body reinforcing layer is formed around the defective pile after the construction is finished. The cement soil body reinforcing layer has two forms, and can improve the frictional resistance of the soil body of the pile body aiming at the defect pile with insufficient bearing capacity, thereby improving the bearing capacity of the defect pile and enabling the defect pile to meet the requirement of a qualified pile foundation; the defective part can be wrapped by the cement soil body aiming at the unqualified pile with insufficient integrity of the pile body, such as damaged pile body, local reduction of pile diameter and the like, so that the integrity of the pile body is ensured.
Compared with the prior art, the stirring drill rod for reinforcing the defective pile in the soft foundation construction has the following advantages:
1) After the unqualified pile foundation is detected, the stirring drill rod can be used for reinforcing the original defective pile without re-construction, so that time and labor are saved.
2) The defective pile foundation is processed in situ, the upper column and the plate structure are not affected, load transmission is unchanged, and structure change is not needed.
3) The cement soil body is adopted for reinforcement, the main material is only cement, bagged cement construction can be adopted, and the material acquisition is convenient.
Drawings
FIG. 1 is a schematic view of a stirring drill rod;
FIG. 2 is a schematic cross-sectional view of a rod body;
FIG. 3 is a schematic view of a defective pile reinforcement of a stir drill pipe;
FIG. 4 is a schematic structural diagram of a defective pile and a reinforced layer of a cement soil body;
FIG. 5 is a schematic view of a defective pile reinforcement of another stirring drill rod;
FIG. 6 is a schematic view of another defective pile and a reinforced layer of a cement soil;
FIG. 7 is a schematic view of a second type of agitator drill pipe;
fig. 8 is a schematic structural view of a third type of stirring drill rod.
In the figure: the concrete pile comprises a rod body 1, cutting teeth 2, stirring blades 3, a cement slurry channel 4, a grouting opening 4-1, a grout outlet 4-2, a defective pile 5 and a cement soil body reinforcing layer 6.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1 and fig. 2, as an embodiment of the present invention, the stirring drill rod for reinforcing a defective pile in soft foundation construction provided in this embodiment includes a rod body 1, where the rod body 1 is of a hollow structure, and an inner diameter of the rod body is slightly smaller than an outer diameter of a pile foundation, and in this embodiment, the rod body 1 is made of an iron material.
Welding pick 2 on the bottom surface of the body of rod 1, and carry out the continuous type along the circumferencial direction of the body of rod 1 and distribute, in this embodiment pick 2 adopts alloy material.
Three groups of stirring blades 3 are welded on the outer side surface of the rod body 1, and all the stirring blade groups are adjacent to the bottom of the rod body 1 and are arranged in parallel in the length direction of the rod body 1; every stirring vane of group 3 all contains three stirring vane 3 at evenly distributed on the circumferencial direction of the body of rod 1, and goes up three stirring vane of group 3 in the long-direction of the body of rod 1 and be the crisscross setting of interval, in this embodiment stirring vane 3's shape is rectangular form, and adopts the iron material equally.
A pair of cement slurry channels 4 are formed in the wall of the rod body 1, the cement slurry channels 4 are symmetrically arranged, a grouting port 4-1 on one side of each cement slurry channel 4 is located on the top surface of the rod body 1, and a grout outlet 4-2 on the other side of each cement slurry channel is located on the outer side surface of the rod body 1 and is closer to the bottom of the rod body 1 than all stirring blade groups.
Of course, in the actual design and use process, the number of the stirring blade groups on the rod body 1 and the number of the stirring blades 3 in each group, and the number of the cement slurry channels 4 on the rod body 1 can be correspondingly adjusted according to the actual application. For example, as a second embodiment of the present invention, as shown in fig. 7, in the stirring drill rod for reinforcing a defective pile in soft foundation construction of this embodiment, the number of the stirring blade groups on the outer side surface of the rod body 1 is two, and the number of the stirring blades 3 in each group is still three. For example, as a third embodiment of the present invention, as shown in fig. 8, in the stirring drill rod for reinforcing a defective pile in soft foundation construction of the present embodiment, the number of the cement slurry channels 4 formed on the wall of the rod body 1 is three, and the cement slurry channels are uniformly distributed in the circumferential direction of the rod body 1.
The stirring drill rod for reinforcing the defective pile 5 in the construction of the soft foundation can be sleeved outside the defective pile 5, and is used for cutting concrete at the outermost edge of the pile foundation of the defective pile 5 through the cutting pick 2 at the end part in a rotating mode so as to drill downwards, cement slurry is sprayed to soil mass around the pile through the cement slurry channel 4 and the slurry outlet 4-2 in the drilling process, the soil mass and the sprayed cement slurry are stirred and mixed by the rotating stirring blade 3 simultaneously, so that the soil mass around the pile is reinforced, and a cement soil mass reinforcing layer 6 is formed in 5 weeks of the defective pile after construction is completed.
The cement soil body reinforcing layer 6 has two forms, as shown in fig. 3 and 4, aiming at the defective pile 5 with insufficient bearing capacity, the frictional resistance of the pile body soil body can be improved, so that the bearing capacity of the defective pile 5 is improved to meet the requirement of a qualified pile foundation; as shown in fig. 5 and 6, for an unqualified pile with insufficient integrity of the pile body, such as damaged pile body, local reduction of pile diameter and the like, the cement soil body can wrap the defective part, and the integrity of the pile body is ensured.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (2)
1. The utility model provides a stirring drilling rod that reinforcement of defective pile was used in soft foundation construction, includes the body of rod, its characterized in that: the rod body is of a hollow structure, and the inner diameter of the rod body is slightly smaller than the outer diameter of the pile foundation; the bottom surface of the rod body is provided with cutting teeth which are continuously distributed along the circumferential direction of the rod body; at least one group of stirring blades is arranged on the outer side surface of the rod body, and all the groups of stirring blades are adjacent to the bottom of the rod body and are arranged in parallel in the length direction of the rod body; at least one cement slurry channel is formed on the wall of the rod body, a grouting port on one side of each cement slurry channel is positioned on the top surface of the rod body, and a grout outlet on the other side of each cement slurry channel is positioned on the outer side surface of the rod body and is closer to the bottom of the rod body than all the stirring blade groups.
2. The stirring drill rod for reinforcing the defective pile in the construction of the soft foundation according to claim 1, which is characterized in that: three groups of stirring blades are arranged in parallel in the length direction of the rod body, each group of stirring blades comprises three stirring blades which are uniformly distributed in the circumferential direction of the rod body, and the three groups of stirring blades are arranged in a staggered mode in the length direction of the rod body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211086410.3A CN115305909B (en) | 2022-09-06 | 2022-09-06 | Stirring drill rod for reinforcing defective piles in soft foundation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211086410.3A CN115305909B (en) | 2022-09-06 | 2022-09-06 | Stirring drill rod for reinforcing defective piles in soft foundation construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115305909A true CN115305909A (en) | 2022-11-08 |
| CN115305909B CN115305909B (en) | 2023-10-27 |
Family
ID=83865853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211086410.3A Active CN115305909B (en) | 2022-09-06 | 2022-09-06 | Stirring drill rod for reinforcing defective piles in soft foundation construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115305909B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030085482A1 (en) * | 1997-05-07 | 2003-05-08 | Paul Sincock | Repair of structural members |
| CN201771003U (en) * | 2010-07-08 | 2011-03-23 | 上海久坚加固工程有限公司 | Isolating body for reinforcing underwater piles |
| CN103806479A (en) * | 2014-01-27 | 2014-05-21 | 广东省建筑科学研究院 | Pile foundation combined grouting reinforcement construction method combining waterproof curtain |
| CN110952522A (en) * | 2019-12-03 | 2020-04-03 | 中交天津港湾工程研究院有限公司 | Double-spraying bidirectional cement mixing pile drill bit and construction method thereof |
| CN212535556U (en) * | 2020-05-22 | 2021-02-12 | 云南建投基础工程有限责任公司 | Improved rotary drilling rig drill bit for treating collapsed hole |
| CN112482372A (en) * | 2020-12-02 | 2021-03-12 | 保利长大工程有限公司 | Defect repairing method for cast-in-place pile |
| CN113186903A (en) * | 2021-06-10 | 2021-07-30 | 河南中城建设集团股份有限公司 | Combined pile structure and construction method for treating insufficient bearing capacity of deep foundation pit construction pile by adopting combined pile structure |
-
2022
- 2022-09-06 CN CN202211086410.3A patent/CN115305909B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030085482A1 (en) * | 1997-05-07 | 2003-05-08 | Paul Sincock | Repair of structural members |
| CN201771003U (en) * | 2010-07-08 | 2011-03-23 | 上海久坚加固工程有限公司 | Isolating body for reinforcing underwater piles |
| CN103806479A (en) * | 2014-01-27 | 2014-05-21 | 广东省建筑科学研究院 | Pile foundation combined grouting reinforcement construction method combining waterproof curtain |
| CN110952522A (en) * | 2019-12-03 | 2020-04-03 | 中交天津港湾工程研究院有限公司 | Double-spraying bidirectional cement mixing pile drill bit and construction method thereof |
| CN212535556U (en) * | 2020-05-22 | 2021-02-12 | 云南建投基础工程有限责任公司 | Improved rotary drilling rig drill bit for treating collapsed hole |
| CN112482372A (en) * | 2020-12-02 | 2021-03-12 | 保利长大工程有限公司 | Defect repairing method for cast-in-place pile |
| CN113186903A (en) * | 2021-06-10 | 2021-07-30 | 河南中城建设集团股份有限公司 | Combined pile structure and construction method for treating insufficient bearing capacity of deep foundation pit construction pile by adopting combined pile structure |
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| Publication number | Publication date |
|---|---|
| CN115305909B (en) | 2023-10-27 |
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