CN115305909B - Stirring drill rod for reinforcing defective piles in soft foundation construction - Google Patents
Stirring drill rod for reinforcing defective piles in soft foundation construction Download PDFInfo
- Publication number
- CN115305909B CN115305909B CN202211086410.3A CN202211086410A CN115305909B CN 115305909 B CN115305909 B CN 115305909B CN 202211086410 A CN202211086410 A CN 202211086410A CN 115305909 B CN115305909 B CN 115305909B
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- CN
- China
- Prior art keywords
- rod body
- rod
- stirring
- pile
- defective
- Prior art date
- 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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- 238000003756 stirring Methods 0.000 title claims abstract description 56
- 230000002950 deficient Effects 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims abstract description 16
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 230000007547 defect Effects 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 239000004035 construction material Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 17
- 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 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- 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 application 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; cutting picks are arranged on the bottom surface of the rod body and are continuously distributed along the circumferential direction of the rod body; at least one group of stirring blades are 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 rod wall of the rod body, one side grouting opening of each cement slurry channel is positioned on the top surface of the rod body, and the other side grouting opening 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 vane groups. The application solves the technical problem of defective pile reinforcement in soft foundation construction. The application has the advantages of convenient construction material taking, time and labor saving during the construction process of reinforcing the defective pile, and the like.
Description
Technical Field
The application 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 soft pile foundation construction process, due to uncertainty of geological conditions, uncontrollability in part of the construction process, and possible problems of manual operation, material defects and the like, defects of a final pile sometimes occur, and the pile foundation is judged to be an unqualified pile when being detected, so that the pile foundation cannot be used for building pile foundation construction.
In the past, the defective piles can be generally only subjected to waste treatment, and a pile with the same specification is constructed again to replace the defective piles, but after pile foundation engineering is finished, main equipment basically falls off, the demand of reinforced concrete and the like of one pile is less, and the pile is transported to a site and has relatively high transport cost. The cost of manpower, materials, machinery and time for repairing and driving a pile is high.
In addition, the defective pile cannot exert the bearing capacity completely, but the bearing capacity is insufficient or unstable due to the defect, and a large amount of resources are wasted by discarding the pile.
Disclosure of Invention
The application 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 above purpose, the stirring drill rod for reinforcing the defective pile in soft foundation construction 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; cutting picks are arranged on the bottom surface of the rod body and are continuously distributed along the circumferential direction of the rod body; at least one group of stirring blades are 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 rod wall of the rod body, one side grouting opening of each cement slurry channel is positioned on the top surface of the rod body, and the other side grouting opening 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 vane groups.
Preferably, the stirring drill rod for reinforcing the defective pile in soft foundation construction comprises three groups of stirring blades which are arranged in parallel in the length direction of the rod body, wherein 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 in the length direction of the rod body are arranged at intervals in a staggered manner.
The application relates to a stirring drill rod for reinforcing a defective pile in soft foundation construction, which can be sleeved on the outer side of the defective pile, and cuts up concrete at the outermost edge of a pile foundation of the defective pile by cutting picks at the end part in a rotating mode, so that cement slurry is sprayed to soil around the pile through a cement slurry channel and a slurry outlet in the process of drilling, and a rotating stirring blade simultaneously stirs and mixes the soil and the sprayed cement slurry, so that the soil around the pile is reinforced, and a cement soil reinforcing layer is formed around the defective pile after construction is completed. The cement soil body reinforcing layer has two forms, and can improve the friction resistance of the pile body aiming at the defective pile with insufficient bearing capacity, thereby improving the bearing capacity of the defective pile to meet the requirement of a qualified pile foundation; the defective position can be wrapped by cement soil body to ensure the pile body integrity of the defective pile with the defect of pile body damage, partial shrinkage of pile diameter and other pile body integrity defects.
Compared with the prior art, the stirring drill rod for reinforcing the defective pile in soft foundation construction has the following advantages:
1) After the unqualified pile foundation is detected, the stirring drill rod can be used for reinforcing on the basis of the original defective pile without re-construction, so that time and labor are saved.
2) The defect pile foundation is treated in situ, the upper column and the plate structure are not affected, the load transmission is unchanged, and the structure change is not needed.
3) The cement soil body is adopted for reinforcement, the main material is cement only, the construction of bagged cement can be adopted, and the material is convenient to obtain.
Drawings
FIG. 1 is a schematic view of a stirring rod;
FIG. 2 is a schematic cross-sectional view of a rod body;
FIG. 3 is a schematic illustration of defective pile reinforcement for a stirring drill pipe;
FIG. 4 is a schematic diagram of a defective pile and a cement soil reinforcing layer;
FIG. 5 is a schematic illustration of defective pile reinforcement of another stirring drill pipe;
FIG. 6 is a schematic diagram of another defective pile and cement soil reinforcing layer;
FIG. 7 is a schematic view of a second type of stirring rod;
fig. 8 is a schematic view of a third type of stirring rod.
In the figure: the cement grouting device comprises a rod body 1, cutting picks 2, stirring blades 3, a cement slurry channel 4, a grouting port 4-1, a grouting port 4-2, a defect pile 5 and a cement soil reinforcing layer 6.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.
As shown in fig. 1 and fig. 2, as an embodiment of the present application, 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 the inner diameter of the rod body 1 is slightly smaller than the outer diameter of a pile foundation, and in this embodiment, the rod body 1 is made of an iron material.
The cutting teeth 2 are welded on the bottom surface of the rod body 1, and are continuously distributed along the circumferential direction of the rod body 1, and in the embodiment, the cutting teeth 2 are made of alloy materials.
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; each group of stirring blades 3 comprises three stirring blades 3 uniformly distributed in the circumferential direction of the rod body 1, and the three groups of stirring blades 3 in the longitudinal direction of the rod body 1 are arranged at intervals in a staggered manner, and in the embodiment, the shape of each stirring blade 3 is long-strip-shaped, and iron materials are adopted.
A pair of cement slurry channels 4 are formed on the rod wall of the rod body 1, the cement slurry channels 4 are symmetrically arranged, one side grouting opening 4-1 of each cement slurry channel 4 is positioned on the top surface of the rod body 1, the other side grouting opening 4-2 is positioned on the outer side surface of the rod body 1, and the grouting openings are closer to the bottom of the rod body 1 than all stirring vane groups.
Of course, in the actual design and use process, the number of the stirring vane groups on the rod body 1 and the number of the stirring vanes 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 application, as shown in fig. 7, in the stirring rod for reinforcing a defective pile in soft foundation construction of the present embodiment, the number of stirring blade groups on the outer side surface of the rod body 1 is two, and the number of stirring blades 3 in each group is still three. Also, for example, as a third embodiment of the present application, as shown in fig. 8, in the stirring rod for reinforcing a defective pile in soft foundation construction of the present embodiment, the number of cement slurry channels 4 formed on the rod wall of the rod body 1 is three, and are uniformly distributed in the circumferential direction of the rod body 1.
Above-mentioned stirring drilling rod that weak foundation construction middle defect stake 5 reinforcement was used, it can overlap in the outside of defect stake 5, adopts rotatory mode, thereby cuts up the concrete of defect stake 5 pile foundation outer most edge through pick 2 of tip and bore, and the in-process of boring down, through grout passageway 4 and grout outlet 4-2 to the soil body around the stake, rotatory stirring vane 3 stirs the mixture to soil body and spun cement thick liquid simultaneously for soil body around the stake consolidates, forms cement soil body reinforcement layer 6 at defect stake 5 week promptly after accomplishing the construction.
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 friction 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 a defective pile with insufficient pile body integrity, such as damaged pile body and partially reduced pile diameter, the cement soil body can wrap the defective part, so that the pile body integrity is ensured.
The present application is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present application can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present application fall within the scope of the present application.
Claims (2)
1. Stirring drilling rod that defect stake reinforcement was used in soft foundation construction, including 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; cutting picks are arranged on the bottom surface of the rod body and are continuously distributed along the circumferential direction of the rod body; at least one group of stirring blades are 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 rod wall of the rod body, one side grouting opening of each cement slurry channel is positioned on the top surface of the rod body, and the other side grouting opening 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 vane groups.
2. The stirring drill rod for reinforcing a defective pile in soft foundation construction according to claim 1, wherein: 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 uniformly distributed in the circumferential direction of the rod body, and the three groups of stirring blades in the length direction of the rod body are arranged at intervals in a staggered mode.
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 CN115305909A (en) | 2022-11-08 |
| CN115305909B true 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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030085482A1 (en) * | 1997-05-07 | 2003-05-08 | Paul Sincock | Repair of structural members |
-
2022
- 2022-09-06 CN CN202211086410.3A patent/CN115305909B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
|---|---|
| CN115305909A (en) | 2022-11-08 |
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