CN110080218A - The interim build-in basement rock construction method of steel pile casting - Google Patents
The interim build-in basement rock construction method of steel pile casting Download PDFInfo
- Publication number
- CN110080218A CN110080218A CN201910277453.1A CN201910277453A CN110080218A CN 110080218 A CN110080218 A CN 110080218A CN 201910277453 A CN201910277453 A CN 201910277453A CN 110080218 A CN110080218 A CN 110080218A
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- CN
- China
- Prior art keywords
- pile casting
- steel pile
- rock
- steel
- construction method
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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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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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
Abstract
The present invention provides the interim build-in basement rock construction methods of steel pile casting, comprising the following steps: step 1: by steel pile casting penetrating the cobble stratum；Step 2: to inside steel pile casting boulder bed and strong-weathered rock carry out loosening processing；Step 3: the boring mud in the pile foundation hole in steel pile casting is discharged to outside stake holes；Step 4: after steel pile casting reaches hard rock stratum or middle weathered rock formation, using Special drilling bit instead and be punched out, scraped by the way that Special drilling bit is counter to pile foundation hole wall side, expand aperture, then cooperate vibration hammer that sinking steel protecting canister is forced to enter rock；Step 5: in Special drilling bit punch process, mud is inhaled on Bian Chongkong, side, circulation construction, causes what steel pile casting reached calibration to enter rock depth；Step 6: cleaning pile foundation hole is anchored concrete in the steel pile casting that bottom hole pours setting height.It is slow in big partial size cobble geology and hard basement rock drilling depth to solve traditional pilot hole technique, the problems such as sinking steel protecting canister difficulty.
Description
Technical field
The present invention relates to piling Technology fields, and in particular to a kind of interim build-in basement rock construction method of steel pile casting.
Background technique
The rock build-in that enters of large diameter pile foundation steel pile casting mostly uses greatly " double casing methods " and " casing follow-up step " on the Changjiang river at present.
The steel pile casting that " double casing methods " needs additional processing diameter bigger, to equipment such as lifting, vibration hammers, more stringent requirements are proposed, and
Also the difficulty that steel pile casting pilot hole is increased while increasing steel pile casting diameter, especially in big partial size cobble geology；Traditional " shield
Equally drilling depth is extremely slow in big partial size cobble and hard basement rock for cylinder follow-up step ", and sinking steel protecting canister is difficult, limits the construction period
It makes larger, influences project progress.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of interim build-in basement rock construction methods of steel pile casting, by biography
" casing follow-up step " technique of system is simply transformed, to solve traditional pilot hole technique in big partial size cobble geology and hard base
Rock drilling depth is slow, the problems such as sinking steel protecting canister difficulty.
In order to realize above-mentioned technical characteristic, the object of the present invention is achieved like this: the interim build-in basement rock of steel pile casting is applied
Work method, it is characterised in that it the following steps are included:
Step 1: by steel pile casting penetrating the cobble stratum；
Step 2: to inside steel pile casting boulder bed and strong-weathered rock carry out loosening processing；
Step 3: the boring mud in the pile foundation hole in steel pile casting is discharged to outside stake holes；
Step 4: after steel pile casting reaches hard rock stratum or middle weathered rock formation, using Special drilling bit instead and be punched out, bored by abnormity
Head is counter to pile foundation hole wall side to be scraped, and expands aperture, then cooperate vibration hammer that sinking steel protecting canister is forced to enter rock；
Step 5: in Special drilling bit punch process, mud is inhaled on Bian Chongkong, side, and circulation construction causes steel pile casting to reach entering for calibration
Rock depth；
Step 6: cleaning pile foundation hole is anchored concrete in the steel pile casting that bottom hole pours setting height.
The concrete operation method of the step 1 forces steel pile casting penetrating the cobble stratum using high-power vibration hammer.
The concrete operation method of the step 2, using impact drill to inside steel pile casting boulder bed and strongly weathered sand-rock into
Row disturbance loosening processing.
Boring mud is discharged outside pile foundation hole by air compressor machine and mud-sucking device, accelerates steel by the concrete operation method of the step 3
Casing pilot hole speed.
Special drilling bit includes the brill tooth that its bottom is arranged in the step 4, and is uniformly welded in its outer wall more
A anti-briar tooth block, the anti-briar tooth block are matched with the inner wall of pile foundation hole, and are carried out hanging to it in drilling process and be removed.
The height of steel pile casting anchoring concrete enters rock depth greater than calibration in the step 6.
The method have the advantages that:
1, the present invention is followed up drawing hole construction using single casing, without processing larger diameter steel pile casting auxiliary pilot hole, is reduced to rising
Heavy equipment requirement, reduces expense cost.
2, by the simple transformation to drill hammer, increase anti-briar tooth block, can rock stratum below anti-hook steel pile casting wall, make steel
Casing can sink under self gravitation effect, greatly accelerate pilot hole speed, save the duration.
3, concrete is anchored by steel pile casting steel pile casting is mounted in basement rock, greatly and enhance the stabilization of steel pile casting group
Property and flood fighting are passed the flood period ability, it is ensured that construction safety.
4, " very heavy pendant " structure that steel pile casting group is formed can guarantee the impact of the upper Pile Installation Platform of steel pile casting group, it is subsequent can
It realizes the assembly steel cofferdam parallel construction in piling, accelerates construction speed, shorten the duration.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the state diagram that the present invention applies process.
Fig. 2 is the state diagram after the present invention applies.
In figure: horizon d 1, Special drilling bit 3, anti-briar tooth block 4, steel pile casting anchoring concrete 5, bores tooth 6, pile foundation at steel pile casting 2
Hole 7.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Referring to Fig. 1-2, the interim build-in basement rock construction method of steel pile casting, it is characterised in that it the following steps are included:
Step 1: by 2 penetrating the cobble stratum of steel pile casting；
Step 2: to inside steel pile casting 2 boulder bed and strong-weathered rock carry out loosening processing；
Step 3: the boring mud in the pile foundation hole 7 in steel pile casting 2 is discharged to outside stake holes；
Step 4: after steel pile casting 2 reaches hard rock stratum or middle weathered rock formation, using Special drilling bit 3 instead and be punched out, pass through abnormity
Drill bit 3 is counter to 7 wall side of pile foundation hole to be scraped, and expands aperture, then cooperate vibration hammer that steel pile casting 2 is forced to be lowered into rock；
Step 5: in 3 punch process of Special drilling bit, mud is inhaled on Bian Chongkong, side, and circulation construction causes steel pile casting 2 to reach calibration
Enter rock depth；
Step 6: cleaning pile foundation hole 7 is anchored concrete 5 in the steel pile casting that bottom hole pours setting height.
By using above-mentioned construction method, it uses single casing follow-up drawing hole construction, without processing larger diameter steel pile casting
Pilot hole is assisted, reduces to lifting equipment requirement, reduces expense cost.
Further, the concrete operation method of the step 1 forces steel pile casting 2 to penetrate cobble using high-power vibration hammer
Layer.
Further, the concrete operation method of the step 2, using impact drill to the boulder bed inside steel pile casting 2 and by force
Weathered rock formation carries out disturbance loosening processing.
Further, by air compressor machine and mud-sucking device pile foundation hole is discharged in boring mud by the concrete operation method of the step 3
Outside 7, accelerate steel pile casting pilot hole speed.
Further, Special drilling bit 3 includes the brill tooth 6 that its bottom is arranged in the step 4, and is uniformly welded in its outer wall
Connect and be fixed with multiple anti-briar tooth blocks 4, the anti-briar tooth block 4 is matched with the inner wall of pile foundation hole 7, and in drilling process to its into
Row is hung and is removed.By the simple transformation to drill hammer, anti-briar tooth block 4 can rock stratum below anti-hook steel pile casting wall, make steel pile casting from
It can sink under body gravity, greatly accelerate pilot hole speed, save the duration
Further, the height of steel pile casting anchoring concrete 5 enters rock depth greater than calibration in the step 6.By above-mentioned
Steel pile casting is mounted in basement rock by steel pile casting anchoring concrete 5, greatly and enhances the stability of steel pile casting group and flood fighting is passed the flood period
Ability, it is ensured that construction safety；" very heavy pendant " structure that steel pile casting is anchored concrete 5 groups formation can guarantee the upper pile foundation of steel pile casting group
The impact of operation platform, the subsequent achievable assembly steel cofferdam parallel construction in piling, accelerates construction speed, shortens work
Phase.
It is of the invention use process is as follows:
After Large-diameter Steel casing 2 enters hard basement rock, sinks difficult, by being welded with anti-briar tooth block 4 in drill hammer side, rushing
Hit drill bit up and down reciprocatingly in punch process with drill bit swing it is counter to side rock stratum scraped, expand punching aperture, steel can be removed and protected
Rock below barrel, cooperates vibration hammer to force sinking steel protecting canister again under steel pile casting Gravitative Loads.
After the arrival of steel pile casting 2 is designed into 2 meters of rock depth, it is anchored concrete through 5 meters of borehole cleaning after-pouring high of steel pile castings, it will
Steel pile casting is mounted in basement rock, forms " very heavy pendant " structure, it is ensured that the stability and safe flood of steel pile casting group.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as limitation of the invention, this hair
Bright protection scope should be with the technical solution of claim record, technical characteristic in the technical solution recorded including claim
Equivalents are protection scope.Equivalent replacement i.e. within this range is improved, also within protection scope of the present invention.
Claims (6)
1. the interim build-in basement rock construction method of steel pile casting, it is characterised in that it the following steps are included:
Step 1: by steel pile casting (2) penetrating the cobble stratum；
Step 2: loosening processing is carried out to the internal boulder bed of steel pile casting (2) and strong-weathered rock；
Step 3: the boring mud in the pile foundation hole (7) in steel pile casting (2) is discharged to outside stake holes；
Step 4: after steel pile casting (2) reach hard rock stratum or middle weathered rock formation, using Special drilling bit (3) instead and be punched out, pass through
Special drilling bit (3) is counter to pile foundation hole (7) wall side to be scraped, and expands aperture, then cooperate vibration hammer that steel pile casting (2) is forced to be lowered into rock；
Step 5: in Special drilling bit (3) punch process, mud is inhaled on Bian Chongkong, side, and circulation construction causes steel pile casting (2) to reach mark
Fixed enters rock depth；
Step 6: cleaning pile foundation hole (7) pours steel pile casting anchoring concrete (5) of setting height in bottom hole.
2. the interim build-in basement rock construction method of steel pile casting according to claim 1, which is characterized in that the step 1 it is specific
Operating method forces steel pile casting (2) penetrating the cobble stratum using high-power vibration hammer.
3. the interim build-in basement rock construction method of steel pile casting according to claim 1, which is characterized in that the step 2 it is specific
Operating method carries out disturbance loosening processing to the internal boulder bed of steel pile casting (2) and strongly weathered sand-rock using impact drill.
4. the interim build-in basement rock construction method of steel pile casting according to claim 1, which is characterized in that the step 3 it is specific
Boring mud is discharged pile foundation hole (7) outside by air compressor machine and mud-sucking device, accelerates steel pile casting pilot hole speed by operating method.
5. the interim build-in basement rock construction method of steel pile casting according to claim 1, which is characterized in that special-shaped in the step 4
Drill bit (3) includes the brill tooth (6) that its bottom is arranged in, and is uniformly welded with multiple anti-briar tooth blocks (4) in its outer wall, described
Anti- briar tooth block (4) matches with the inner wall of pile foundation hole (7), and carries out hanging to it in drilling process and remove.
6. the interim build-in basement rock construction method of steel pile casting according to claim 5, which is characterized in that steel protects in the step 6
The height of cylinder anchoring concrete (5) enters rock depth greater than calibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277453.1A CN110080218A (en) | 2019-04-08 | 2019-04-08 | The interim build-in basement rock construction method of steel pile casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910277453.1A CN110080218A (en) | 2019-04-08 | 2019-04-08 | The interim build-in basement rock construction method of steel pile casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110080218A true CN110080218A (en) | 2019-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910277453.1A Pending CN110080218A (en) | 2019-04-08 | 2019-04-08 | The interim build-in basement rock construction method of steel pile casting |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004042195A1 (en) * | 2004-08-26 | 2006-03-09 | Roman Franz | Ground borer for positioning borings in ground, has lifting device fixed to drill bit and conveying coil, where lifting device enables drill bit with conveying coil to be moved perpendicularly upward over boring rod extension |
| WO2009116762A1 (en) * | 2008-03-18 | 2009-09-24 | Back Nam Jin | Ground boring apparatus |
| CN108222843A (en) * | 2018-01-05 | 2018-06-29 | 绍兴文理学院 | A kind of construction method for preventing cast-in-situ bored pile bit freezing |
| CN208088288U (en) * | 2018-04-02 | 2018-11-13 | 中建四局第五建筑工程有限公司 | The big areas grain size shiver stone Gao Tian pile foundation fast pore-creating structure |
-
2019
- 2019-04-08 CN CN201910277453.1A patent/CN110080218A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004042195A1 (en) * | 2004-08-26 | 2006-03-09 | Roman Franz | Ground borer for positioning borings in ground, has lifting device fixed to drill bit and conveying coil, where lifting device enables drill bit with conveying coil to be moved perpendicularly upward over boring rod extension |
| WO2009116762A1 (en) * | 2008-03-18 | 2009-09-24 | Back Nam Jin | Ground boring apparatus |
| CN108222843A (en) * | 2018-01-05 | 2018-06-29 | 绍兴文理学院 | A kind of construction method for preventing cast-in-situ bored pile bit freezing |
| CN208088288U (en) * | 2018-04-02 | 2018-11-13 | 中建四局第五建筑工程有限公司 | The big areas grain size shiver stone Gao Tian pile foundation fast pore-creating structure |
Non-Patent Citations (1)
| Title |
|---|
| 方成武等: "浅薄覆盖层倾斜岩面大直径钢护筒施工方案比选及应用", 《中国港湾建设》 * |
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Application publication date: 20190802 |