CN112962583A - Method for quickly connecting broken pile of rotary drilling cast-in-place pile - Google Patents
Method for quickly connecting broken pile of rotary drilling cast-in-place pile Download PDFInfo
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- CN112962583A CN112962583A CN202110112493.8A CN202110112493A CN112962583A CN 112962583 A CN112962583 A CN 112962583A CN 202110112493 A CN202110112493 A CN 202110112493A CN 112962583 A CN112962583 A CN 112962583A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000009430 construction management Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- 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
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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
- E02D5/64—Repairing piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a method for quickly connecting broken piles of a rotary drilling cast-in-place pile, which comprises the following steps: firstly, when the cast-in-place pile is found to be broken due to pipe blockage and other reasons during concrete pouring, pulling out a guide pipe and cleaning; the blocking pipe is a conduit poured by concrete; step two: measuring the depth of the broken pile position; step three: placing the cleaned guide pipe into a position with the depth of 500mm-1000mm away from the broken pile, pouring concrete, removing slurry in the guide pipe, and extruding a mixture at the joint of the concrete and the slurry out of the original concrete pouring surface; step four: the conduit was inserted 4-5m below the concrete and slurry mixture. The method is scientific and reasonable, and convenient and fast to construct; the pile splicing is simple and comprehensive, the pile is spliced by the 'rescue' method after the pile is actually broken, and the integrity of the pile body meets the relevant standard requirements after the ultrasonic detection.
Description
Technical Field
The invention relates to the field of building construction, in particular to a method for quickly connecting broken piles of a rotary drilling cast-in-place pile.
Background
The rotary drilling bored concrete pile can be constructed in strata such as higher water level, removed areas, mucky soil, clay, sandy soil, pebble beds and the like, has the advantages of high automation degree, high hole forming speed, high quality and the like, and is widely applied to various pile foundation engineering.
Due to the influence of a plurality of factors such as geological conditions, field factors, construction management and the like, pile breakage of the rotary drilling cast-in-place pile during pouring sometimes occurs, and the mode of treating the pile breakage of the rotary drilling cast-in-place pile is commonly used: 1. in-situ pile replacement: the broken pile detected by ultrasonic waves is found in time in the construction process, and a new pile is poured in situ after the pile is thoroughly cleaned, so that the pile is thoroughly treated. The method has the advantages of good effect, high difficulty, long period and high cost, and can be selected and adopted according to factors such as the importance of engineering, geological conditions, the number of defects and the like.
2. Pile splicing manually: determining a pile splicing scheme, determining well point dewatering-excavation-20 # plain concrete according to geological data provided by design to perform wall protection, reinforcing the interior of the wall protection by using a steel bar hoop, excavating to a qualified position, performing manual roughening, and pouring concrete according to a concrete construction method of a hole excavation method.
3. Pile core sinking method: the method is easy to make, namely, a well with the diameter of 80cm is dug in the center of a defective pile by using an air pick while water is lowered, the depth at least exceeds the defective part, then the sediment is sealed and cleaned, a steel reinforcement cage is placed, and the expanded concrete is poured by using a hole digging concrete construction method. The method is slow in daily progress, and if the water treatment of individual piles is poor and cannot be reduced, the method is difficult and serious, and the quality, the construction period and the economy are seriously lost.
Disclosure of Invention
The invention aims to provide a method for quickly connecting broken piles of cast-in-place piles by rotary drilling, and aims to solve the technical problems of complex construction, high maintenance cost, uncertain construction period, low safety and the like after the broken piles of the cast-in-place piles are broken.
In order to achieve the purpose, the invention adopts the following technical scheme: the invention provides a method for quickly connecting broken piles of a rotary drilling cast-in-place pile, which comprises the following steps:
firstly, when the cast-in-place pile is found to be broken due to pipe blockage and other reasons during concrete pouring, pulling out a guide pipe and cleaning; the blocking pipe is a conduit poured by concrete;
step two: measuring the depth of the broken pile position;
step three: placing the cleaned guide pipe into a position with the depth of 500mm-1000mm away from the broken pile, pouring concrete, removing slurry in the guide pipe, and extruding a mixture at the joint of the concrete and the slurry out of the original concrete pouring surface;
step four: inserting a conduit 4-5m below the mixture of concrete and slurry;
fifthly, performing broken pile concrete pouring by using the guide pipe again, and returning the slurry and the mixture upwards by using the concrete compactness until the pouring of the cast-in-place pile is finished; the broken pile must be available before the initial setting of the broken pile concrete.
And further, measuring the depth of the pile breaking position by using a measuring rope.
Further, the concrete steps of measuring the depth of the broken pile position are as follows:
s1, moving the measuring rope to the hole edge;
s2, slowly placing the hammer at the end of the measuring rope into the hole;
s3, slowly loosening the measuring rope until the measuring hammer reaches the pile breaking position;
and s4, keeping the measuring rope vertical, and checking the measuring rope scale at the same horizontal position with the hole edge, namely the depth of the pile breaking position.
Further, in step four, the lower portion of the conduit is at least 4-5m below the concrete and slurry mixture.
The compactness is referred to herein without specific parameters, and is expressed by the formula: (ρ 0/ρ) × 100% (ρ 0: bulk density; ρ: bulk density); the expression is mainly intended to mean that the density of the concrete is greater than that of the slurry and the mixture, and the slurry and the mixture are automatically returned when the concrete is poured by using the principle.
Further, the diameter of the catheter was 260 mm.
Furthermore, the distance between the bottom end of the guide pipe and the top surface of the hole bottom elevation is 500mm, and the distance between the top end of the guide pipe and the ground is at least 500 mm; the funnel is arranged at the top end of the catheter.
Further, when the rotary excavating machine drills, slurry is injected while forming holes, so that the lateral pressure of a soil body is offset to prevent hole collapse; when the concrete is poured, the density of the concrete is different from that of the slurry, the concrete sinks below the slurry to form a layer, but the concrete and the slurry form a mixed liquid at the junction of the slurry and the concrete.
And further, the method also comprises a sixth step of confirming the integrity of the pile body by using ultrasonic detection.
The invention has the beneficial effects that:
the invention provides a method for quickly connecting broken piles of a rotary drilling cast-in-place pile, which is scientific and reasonable and is convenient to construct; the pile splicing is simple and comprehensive, the pile is spliced by the 'rescue' method after the pile is actually broken, and the integrity of the pile body meets the relevant standard requirements after the ultrasonic detection.
2, the method has no influence on the quality of the whole rotary drilling cast-in-place pile, and has the advantages of short construction period, low cost, high safety and convenience in use, and a large amount of labor consumption is avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view showing that in step one, when a pile is broken due to pipe blockage and the like, a guide pipe is pulled out for cleaning and the depth of the broken pile is measured;
FIG. 2 is a schematic view of the present invention placing a cleaned catheter 50cm to 100cm above the concrete placement surface;
FIG. 3 is a schematic view of the present invention in which concrete is poured through a pipe and the infiltration mud is removed from the pipe;
FIG. 4 is a schematic illustration of the invention after concrete placement through the conduit, cleaning the mixture of the concrete and slurry junction;
FIG. 5 is a schematic representation of the present invention in which the pipe is lowered 4-5m below the concrete and mud mixture for pile placement;
FIG. 6 is a schematic view of the invention with the gradual extraction of the catheter just prior to completion of the concrete pour;
fig. 7 is a schematic view of the invention for the completion of the integral casting.
Reference numerals: 1-guide pipe, 2-slurry, 3-concrete, 4-concrete and slurry mixture.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and illustrating the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
Examples
Referring to fig. 1-7 in detail, the invention provides a method for quickly connecting broken piles of a rotary drilling cast-in-place pile, which comprises the following steps:
step one, when the cast-in-place pile is found to be broken due to pipe blockage and other reasons during concrete pouring, pulling out the guide pipe 1 and cleaning; the pipe blockage refers to a concrete poured conduit 1;
step two: measuring the depth of the broken pile position; the concrete steps of measuring the depth of the broken pile position are as follows:
s1, moving the measuring rope to the hole edge;
s2, slowly placing the hammer at the end of the measuring rope into the hole;
s3, slowly loosening the measuring rope until the measuring hammer reaches the pile breaking position;
and s4, keeping the measuring rope vertical, and checking the measuring rope scale at the same horizontal position with the hole edge, namely the depth of the pile breaking position. Depth position measurement is performed using a measuring line.
Step three: placing the cleaned guide pipe 1 at a position with a depth of 500mm-1000mm away from the broken pile, pouring concrete 3, removing slurry 2 in the guide pipe 1, and extruding a mixture at the joint of the concrete 3 and the slurry 2 out of the original concrete pouring surface;
step four: inserting the guide pipe 1 into the mixture of the concrete 3 and the slurry 2 for 4-5m below; the lower part of the conduit 1 is at least 4-5m below the mixture of concrete 3 and slurry 2.
Fifthly, the broken pile concrete is poured by using the guide pipe 1 again, and the mud 2 and the mixture are returned upwards by using the compactness of the concrete 3 until the pouring of the cast-in-place pile is finished; the broken pile must be available before the initial setting of the broken pile concrete 3. The catheter 1 has a diameter of 260 mm. The lower part of the bottom end of the guide pipe 1 is 500mm away from the top surface of the hole bottom elevation, and the distance from the top end of the guide pipe 1 to the ground is at least 500 mm; the funnel is mounted on the top end of the catheter 1.
And step six, using ultrasonic detection to confirm the integrity of the pile body.
The compactness is expressed by the formula: ρ 0/ρ × 100% ρ 0: bulk density: ρ: bulk density; the expression is mainly intended to mean that the concrete 3 is more compact than the slurry 2 and the mixture, and the slurry 2 and the mixture are automatically returned when the concrete is poured by using the principle.
When the rotary drilling machine drills, the mud 2 is injected while forming holes, and the side pressure of a soil body is offset to prevent hole collapse; when the concrete 3 is poured, the density of the concrete 3 is different from that of the slurry 2, the concrete 3 sinks below the slurry 2 to form a layer, and the concrete 3 and the slurry 2 form a mixed liquid at the boundary of the slurry 2 and the concrete 3.
The invention provides a method for quickly connecting broken piles of a rotary drilling cast-in-place pile, which is equivalent to a remedial measure that the rotary drilling cast-in-place pile cannot be subjected to one-time concrete pouring due to pipe blockage or other reasons during concrete pouring.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (8)
1. A method for quickly connecting broken piles of cast-in-place piles by rotary drilling is characterized by comprising the following steps: the method comprises the following steps:
step one, when the cast-in-place pile is found to be broken due to pipe blockage and other reasons during concrete pouring, pulling out the guide pipe (1) and cleaning; the pipe plugging refers to a concrete pouring guide pipe (1);
step two: measuring the depth of the broken pile position;
step three: placing the cleaned guide pipe (1) into a place with the depth of 500mm-1000mm away from the broken pile to pour concrete (3), discharging slurry (2) in the guide pipe (1), and extruding a mixture at the joint of the concrete (3) and the slurry (2) out of the original concrete pouring surface;
step four: inserting the conduit (1) below the mixture of concrete (3) and slurry (2);
fifthly, performing broken pile concrete pouring by using the guide pipe (1) again, and returning the slurry (2) and the mixture upwards by using the compactness of the concrete (3) until the pouring of the cast-in-place pile is finished; the broken pile and the pile must be available before the initial setting of the broken pile concrete (3).
2. A pile splicing method according to claim 1, wherein in the second step, the depth measurement of the pile breaking position is performed by using a measuring rope.
3. A pile extension method according to claim 2, characterized in that the depth measurement of the pile-breaking position comprises the following specific steps:
s1, moving the measuring rope to the hole edge;
s2, slowly placing the hammer at the end of the measuring rope into the hole;
s3, slowly loosening the measuring rope until the measuring hammer reaches the pile breaking position;
and s4, keeping the measuring rope vertical, and checking the measuring rope scale at the same horizontal position with the hole edge, namely the depth of the pile breaking position.
4. A method according to claim 1, characterised in that in step four the lower part of the pipe (1) is at least 4-5m below the mixture of concrete (3) and slurry (2).
5. A pile splicing method according to claim 1, characterised in that the conduit (1) has a diameter of 260 mm.
6. A pile extension method according to claim 1, characterized in that the bottom end of the guide pipe (1) is 500mm below the top surface of the hole bottom elevation, and the top end of the guide pipe (1) is at least 500mm above the ground; the funnel is arranged at the top end of the catheter (1).
7. A pile extension method according to claim 1, characterized in that when the rotary excavating machine drills, mud (2) is injected while forming a hole to counteract the side pressure of the soil body to prevent hole collapse; when the concrete (3) is poured, the density of the concrete (3) is different from that of the slurry (2), the concrete (3) sinks to be positioned at the lower part of the slurry (2) to form layering, and part of the concrete (3) at the junction of the slurry (2) and the concrete (3) and the slurry (2) form mixed liquid.
8. A pile splicing method according to claim 1, further comprising a sixth step of further confirming the integrity of the pile body using ultrasonic testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110112493.8A CN112962583A (en) | 2021-01-27 | 2021-01-27 | Method for quickly connecting broken pile of rotary drilling cast-in-place pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110112493.8A CN112962583A (en) | 2021-01-27 | 2021-01-27 | Method for quickly connecting broken pile of rotary drilling cast-in-place pile |
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| Publication Number | Publication Date |
|---|---|
| CN112962583A true CN112962583A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110112493.8A Pending CN112962583A (en) | 2021-01-27 | 2021-01-27 | Method for quickly connecting broken pile of rotary drilling cast-in-place pile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858364A (en) * | 2005-05-08 | 2006-11-08 | 宋亚非 | Secondary pouring method for preventing broken pile accident in pile pouring construction |
| JP2007138470A (en) * | 2005-11-16 | 2007-06-07 | Tekken Constr Co Ltd | Reinforcing cage, construction method of cast-in-place concrete pile, and cast-in-place concrete pile |
| CN101871211A (en) * | 2010-07-13 | 2010-10-27 | 武汉一冶交通工程有限责任公司 | Wet pile extension method for cast-in place pile |
| CN110004925A (en) * | 2019-04-04 | 2019-07-12 | 中国葛洲坝集团第一工程有限公司 | Breakage of cast-in-place bored pile processing unit and construction method |
| CN111733823A (en) * | 2020-06-15 | 2020-10-02 | 中冶地集团西北岩土工程有限公司 | Grouting pipe burying structure and broken pile processing method in cast-in-situ bored pile pouring process |
-
2021
- 2021-01-27 CN CN202110112493.8A patent/CN112962583A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858364A (en) * | 2005-05-08 | 2006-11-08 | 宋亚非 | Secondary pouring method for preventing broken pile accident in pile pouring construction |
| JP2007138470A (en) * | 2005-11-16 | 2007-06-07 | Tekken Constr Co Ltd | Reinforcing cage, construction method of cast-in-place concrete pile, and cast-in-place concrete pile |
| CN101871211A (en) * | 2010-07-13 | 2010-10-27 | 武汉一冶交通工程有限责任公司 | Wet pile extension method for cast-in place pile |
| CN110004925A (en) * | 2019-04-04 | 2019-07-12 | 中国葛洲坝集团第一工程有限公司 | Breakage of cast-in-place bored pile processing unit and construction method |
| CN111733823A (en) * | 2020-06-15 | 2020-10-02 | 中冶地集团西北岩土工程有限公司 | Grouting pipe burying structure and broken pile processing method in cast-in-situ bored pile pouring process |
Non-Patent Citations (2)
| Title |
|---|
| 余刚: "浅谈桥梁钻孔灌注桩断桩处理及预防措施", 《广东建材》 * |
| 彭成锦: "浅谈桥梁工程灌注桩施工中导管堵塞的处理方法", 《民营科技》 * |
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Application publication date: 20210615 |
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