CN110004925B - Broken bored pile processing device and construction method - Google Patents
Broken bored pile processing device and construction method Download PDFInfo
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- CN110004925B CN110004925B CN201910270338.1A CN201910270338A CN110004925B CN 110004925 B CN110004925 B CN 110004925B CN 201910270338 A CN201910270338 A CN 201910270338A CN 110004925 B CN110004925 B CN 110004925B
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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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- Piles And Underground Anchors (AREA)
Abstract
The invention provides a broken pile processing device and a construction method for a cast-in-situ bored pile, which comprises an end head guide pipe and a plug, wherein the plug is hermetically connected with the free end of the end head guide pipe, a sealed cavity is formed between the plug and the inner cavity of the end head guide pipe, and the plug is also fixedly connected with a first steel wire rope; the end head guide pipe is fixedly connected with the guide pipe, and the end head of the first steel wire rope extends out of the upper end of the guide pipe. When in use, the guide pipe is integrally inserted into the non-dry concrete in the cast-in-place pile to a proper depth; checking whether slurry and water enter the bottom of the end head conduit, if so, improving the sealing state between the plug and the end head conduit, and repeating the steps again; if not, entering the next step; loosening the first steel wire rope, pouring concrete from the guide pipe, and separating the plug from the end head guide pipe; through the steps, the whole guide pipe can be sealed underground to the broken pile concrete, and concrete pouring is recovered, so that the construction of broken pile and pile connection is realized. The invention has simple operation and high treatment efficiency.
Description
Technical Field
The invention relates to the field of cast-in-situ bored pile construction in a civil engineering process, in particular to a cast-in-situ bored pile broken pile processing device and a construction method.
Background
The cast-in-situ bored pile has the advantages of high construction speed, small occupied area, strong adaptability to various soil layers, high bearing capacity and the like, and is widely applied to various pile foundation projects. Due to the influence of many factors such as geological conditions, construction management and the like, pile breakage happens frequently during pouring of the underwater cast-in-place pile, and the treatment method is a technical problem in the field.
The three processing devices comprise a conical tetrahedron which can be opened and is formed by hinging four side plates, when the broken pile is processed and the concrete is poured again, the conical tetrahedron is inserted into the concrete which is not completely solidified at the fault, the side plates are opened by the dead weight of the concrete, and the concrete is poured. However, all three devices are sealed by four side plates abutting against each other to form a conical tetrahedron, and are inserted into unset concrete. The three devices have the advantages that after the conical tetrahedron is opened, large resistance is still generated on concrete, so that the flow rate of the concrete is influenced, the speed of pouring the concrete is reduced, and further improvement is needed. In the CN208219658U solution, it is necessary to rotate the guide tube and ensure that the head device does not rotate along with it, which is too high for the concrete to set at a high timing and is difficult to realize.
Besides, the common methods for treating pile breakage include:
1. the scheme of carrying the shoulder pole is as follows: namely, two piles are additionally arranged on two sides of the broken pile respectively, pile tops are connected with the piles through bearing platforms, and the scheme can change the structural form of the pile foundation.
2. The scheme of the sinking steel casing comprises the following steps: the method is characterized in that a steel pile casing with the diameter larger than that of a broken pile is adopted, the steel pile casing is pressed below the position of the broken pile at the position of the broken pile, original broken pile concrete is manually dug out, and concrete is poured again.
3. The scheme of the impact method is as follows: the method adopts a percussion drill to form holes again and pour concrete at the original broken pile position, and the scheme needs large-scale mechanical equipment, has complex construction technology and requires larger construction space. The above solutions all have certain technical drawbacks.
Disclosure of Invention
The invention aims to solve the technical problems of providing a device for treating broken bored piles and a construction method, well overcoming the technical defects of complex technology, high difficulty, high cost, long period and the like in the existing construction scheme, reducing the resistance to later-stage poured concrete, and having simple and convenient operation, high success rate of broken pile connection and reliable construction quality. In a preferred scheme, the related devices are recycled, so that the construction cost is reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a broken pile processing device for a cast-in-situ bored pile comprises an end head guide pipe and a plug, wherein the plug is connected with the free end of the end head guide pipe in a sealing manner, a sealing cavity is formed between the plug and the inner cavity of the end head guide pipe, and the plug is also fixedly connected with a first steel wire rope;
the end head guide pipe is fixedly connected with the guide pipe, and the end head of the first steel wire rope extends out of the upper end of the guide pipe.
In a preferred scheme, the bottom of the plug is in an inverted cone shape.
In a preferred scheme, the top of the plug is conical.
In the preferred scheme, a sealing strip is arranged on the outer wall of the plug or the inner wall of the end head conduit and is used for forming sealing with the outer wall of the plug;
in a preferred scheme, a step is further arranged on the outer wall of the plug, and is used for limiting the axial position of the plug on the end head conduit.
In a preferred scheme, the bottom of the end head conduit is a bell mouth, and the diameter of the position close to the bottom is larger.
In a preferred scheme, at least one reverse pull ring is arranged on the inner wall of the end head conduit, one end of a reverse pull steel wire rope is connected with the upper end of the plug, and the other end of the reverse pull steel wire rope penetrates through the reverse pull ring to be connected with a second steel wire rope;
the end of the second steel wire rope extends out of the upper end of the guide pipe;
when the plug is connected with the end head guide pipe in a sealing mode, the connecting point of the reverse pull steel wire rope and the plug is higher than the elevation of the reverse pull ring.
In the preferred scheme, a vertical plug inner core is arranged on the plug, and a reverse pull steel wire rope is connected with the upper end of the plug inner core;
the number of the reverse pull steel wire ropes is multiple, and the number of the reverse pull rings is correspondingly multiple;
and the plurality of counter-pulling steel wire ropes are fixedly connected with the wire collecting block, and the wire collecting block is fixedly connected with the second steel wire rope.
In a preferred scheme, the plug is also connected with the end head conduit through a suspension steel wire rope;
the plug is provided with a steel wire rope pore channel, the plug is provided with a vertical plug inner core, one end of the suspension steel wire rope is fixedly connected with the plug inner core at the bottom of the steel wire rope pore channel, and the other end of the suspension steel wire rope is fixedly connected with the bottom of the end head conduit.
A construction method adopting the cast-in-situ bored pile broken pile treatment device comprises the following steps:
s1, installing the end head guide pipe at the lowest end of the guide pipe, installing the plug at the bottom end of the end head guide pipe, leading the first steel wire rope out of the upper end of the guide pipe, and tensioning the first steel wire rope;
s2, integrally inserting the guide pipe into the non-dry concrete in the cast-in-place pile to a proper depth;
s3, checking whether slurry and water enter the bottom of the end head guide pipe, if so, improving the sealing state between the plug and the end head guide pipe, and repeating the steps S1 and S2 again; if not, entering the next step;
s4, loosening the first steel wire rope, pouring concrete from the guide pipe, and separating the plug from the end head guide pipe;
through the steps, pile breaking and pile splicing are achieved.
In a preferable scheme, in step S4, after the first steel wire rope is loosened, the second steel wire rope is pulled, and the plug is pulled out of the end head conduit by using a reverse-pull steel wire rope;
the plug is suspended at the lower end of the end head conduit for a certain distance by the suspension steel wire rope so as to be recycled;
during the concrete pouring process, the catheter is continuously pulled up according to the pouring process.
According to the device and the construction method for treating broken piles of cast-in-situ bored piles, the end of the guide pipe is blocked by the plug in the pile connecting and pouring process by adopting the scheme, so that the slurry and water are prevented from entering the guide pipe and further being mixed into broken pile concrete when the guide pipe penetrates through the slurry and the water. The plug can conveniently break away from the end of the conduit, and the pouring speed of concrete is prevented from being influenced. In the preferred scheme, the second steel wire rope and the reverse pull steel wire rope are arranged, so that the operation can be carried out from the upper part of the guide pipe when the pouring concrete and the self gravity of the plug are not enough to break the plug, and the plug is separated from the end head guide pipe. The distance between the plug and the end pipe can be kept in the pouring process of the arranged suspension steel wire rope, so that the pouring speed of concrete is not influenced, and meanwhile, the solidification speed of the concrete is not influenced by the plug.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
FIG. 3 is a schematic view of the stopper of the present invention shown disengaged from the end of the tubing.
In the figure: the device comprises a protective sleeve 1, an end head guide pipe 2, a reverse pull ring 21, a sealing strip 22, a guide pipe 3, a plug 4, a steel wire pore passage 41, slurry 5, concrete 6, a first steel wire rope 7, a second steel wire rope 8, a reverse pull steel wire rope 81, a line concentration block 82, a plug inner core 83, a suspension steel wire rope 9 and the ground 10.
Detailed Description
Example 1:
as shown in fig. 1, the device for treating broken cast-in-situ bored pile comprises an end conduit 2 and a plug 4, wherein the plug 4 is hermetically connected with the free end of the end conduit 2, a sealed cavity is formed between the plug 4 and the inner cavity of the end conduit 2, and the plug 4 is also fixedly connected with a first steel wire rope 7;
the end conduit 2 is fixedly connected with the conduit 3, and the end of the first steel wire rope 7 extends out of the upper end of the conduit 3. By the structure, the whole guide pipe can be sealed underground into the broken pile concrete, and then the plug 4 and the end head guide pipe 2 are separated in the pouring process, so that the construction of pile breaking and pile splicing is realized. This structure can reduce prior art, and the curb plate is to the resistance that the concrete was poured.
In a preferred embodiment as shown in fig. 2 and 3, the bottom of the plug 4 is in an inverted cone shape. With the structure, the resistance in the lowering process of the catheter can be reduced.
In a preferred scheme, as shown in fig. 2 and 3, the top of the plug 4 is conical. With this structure, the resistance to the poured concrete during pouring can be reduced.
In a preferred embodiment, as shown in fig. 2, a sealing strip 22 is disposed on the outer wall of the plug 4 or the inner wall of the end conduit 2 for forming a seal with the outer wall of the plug 4; a groove is arranged at the corresponding position of the outer wall of the plug 4, and the sealing strip 22 is positioned in the groove. The sealing strip 22 in this example is a rubber gasket.
Preferably, as shown in fig. 3, a step is further provided on the outer wall of the plug 4 for limiting the axial position of the plug 4 in the upward direction of the tip guide 2.
Preferably, the bottom of the tip conduit 2 is flared, and the diameter of the position close to the bottom is larger. This configuration facilitates the detachment of the plug 4, not shown in the figures.
The invention has the following beneficial effects:
1. the special plug is made of steel or concrete, is connected with the outside through a steel wire rope, and after the steel wire rope is loosened, newly poured concrete and the plug overcome the resistance of the concrete by means of self gravity and enter the concrete, so that the concrete pouring efficiency and the adaptability of broken pile treatment are improved.
2. The arrangement of the rubber pad in the conduit ensures that the plug and the conduit are more tightly attached, and effectively prevents water and slurry from entering the conduit.
3. The plug can rise along with the poured concrete, the guide pipe rises gradually, and the plug also rises gradually, so that the plug can be used repeatedly. Optionally, the plug may also disconnect the wire rope and discard the plug in the concrete.
In a preferred scheme, as shown in fig. 2 and 3, at least one reverse pull ring 21 is arranged on the inner wall of the end head conduit 2, one end of a reverse pull steel wire rope 81 is connected with the upper end of the plug 4, and the other end of the reverse pull steel wire rope 81 passes through the reverse pull ring 21 and is connected with a second steel wire rope 8;
the end of the second steel wire rope 8 extends out of the upper end of the guide pipe 3;
when the plug 4 is connected with the end head conduit 2 in a sealing way, the connecting point of the back-pull steel wire rope 81 and the plug 4 is higher than the elevation of the back-pull ring 21. With the structure, after the lower conduit 3 is in place, the plug 4 can be separated from the end conduit 2 by pulling the second steel wire rope 8.
In a preferred scheme, as shown in fig. 2 and 3, a vertical plug inner core 83 is arranged on the plug 4, and a reverse pull steel wire rope 81 is connected with the upper end of the plug inner core 83; the plug core 83 in this example is a length of rebar with a plurality of horizontal rebars welded around the bottom of the rebar and the top of the rebar exposed outside the top of the plug 4. To avoid the plug 4 being pulled apart.
The number of the reverse pull steel wire ropes 81 is multiple, and the number of the reverse pull rings 21 is multiple correspondingly;
the plurality of counter-pull steel wire ropes 81 are fixedly connected with the wire collecting block 82, and the wire collecting block 82 is fixedly connected with the second steel wire rope 8. The scheme of pulling the steel wire ropes 81 reversely can prevent the plug 4 from being stuck in the end head conduit 2.
Preferably, as shown in fig. 3, the plug 4 is also connected with the end conduit 2 through a suspension cable 9;
the plug 4 is provided with a steel wire rope pore channel 41, the plug 4 is provided with a vertical plug inner core 83, one end of the suspension steel wire rope 9 is fixedly connected with the plug inner core 83 at the bottom of the steel wire rope pore channel 41, and the other end of the suspension steel wire rope is fixedly connected with the bottom of the end head conduit 2. The structure is used for accommodating the suspension steel wire rope 9, and leakage caused by the suspension steel wire rope 9 is avoided. The hanging steel wire rope 9 is fixedly connected with the inner core 83 of the plug so as to avoid the plug 4 from being cracked.
Example 2:
on the basis of embodiment 1, as shown in fig. 1, a construction method using the cast-in-situ bored pile broken treatment device includes the following steps:
s1, installing the tip conduit 2 at the lowest end of the conduit 3, connecting the tip conduit 2 and the conduit 3 by a flange or a buckle, installing the plug 4 at the bottom end of the tip conduit 2, as shown in fig. 2, leading out the first steel wire rope 7 to the outside of the upper end of the conduit 3, and tensioning the first steel wire rope 7;
s2, when pile splicing operation is performed, as shown in fig. 1, a section of slurry is on the top of the concrete poured in the casing 1, and if the slurry is directly grouted, the slurry is mixed into the concrete, thereby affecting the quality.
Integrally inserting the guide pipe 3 provided with the plug 4 into the non-dry-mixed concrete in the cast-in-place pile to a proper depth; in this case, it is preferable to use 1.5 to 2 meters.
S3, checking whether slurry and water enter the bottom of the end head guide pipe 2, if so, improving the sealing state between the plug 4 and the end head guide pipe 2, and repeating the steps S1 and S2 again; if not, entering the next step;
s4, loosening the first steel wire rope 7, pouring concrete from the guide pipe 3, and separating the plug 4 from the end head guide pipe 2;
in a preferable scheme, in step S4, after the first steel cable 7 is loosened, the second steel cable 8 is pulled, and the plug 4 is pulled out of the end head conduit 2 by using the reverse-pull steel cable 81;
the plug 4 is suspended at the lower end of the end head conduit 2 for a certain distance by a suspension wire rope 9 so as to be recycled;
during the concrete pouring process, the guide tube 3 is continuously pulled up according to the pouring progress.
Through the steps, pile breaking and pile splicing are achieved.
The device of the invention is used for pouring broken piles again, and the efficiency is as high as that of the first batch of concrete pouring. When the pile is broken, the earlier pile splicing is carried out, the better the pile splicing effect is. The method provided by the invention avoids the problems of complex pile splicing technology, low safety and reliability, low efficiency and the like, and has the technical advantages of strong applicability, safety, reliability and high treatment efficiency.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the technical features described in the present invention can be used in combination with each other without conflict, and the scope of the present invention should be defined by the technical means described in the claims, and equivalents thereof including the technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (5)
1. The utility model provides a broken pile processing apparatus of drilling bored concrete pile, characterized by: the device comprises an end head conduit (2) and a plug (4), wherein the plug (4) is connected with the free end of the end head conduit (2) in a sealing way, a sealing cavity is formed between the plug (4) and the inner cavity of the end head conduit (2), and the plug (4) is also fixedly connected with a first steel wire rope (7);
the bottom of the plug (4) is inverted cone-shaped;
a sealing strip (22) is arranged on the outer wall of the plug (4) or the inner wall of the end head conduit (2) and is used for forming sealing with the outer wall of the plug (4);
the outer wall of the plug (4) is also provided with a step for limiting the upward axial position of the plug (4) in the end head conduit (2);
at least one reverse pull ring (21) is arranged on the inner wall of the end head guide pipe (2), one end of a reverse pull steel wire rope (81) is connected with the upper end of the plug (4), and the other end of the reverse pull steel wire rope (81) penetrates through the reverse pull ring (21) to be connected with a second steel wire rope (8);
the end of the second steel wire rope (8) extends out of the upper end of the guide pipe (3);
when the plug (4) is in sealed connection with the end head conduit (2), the connection point of the counter-pull steel wire rope (81) and the plug (4) is higher than the elevation of the counter-pull ring (21);
a vertical inner plug core (83) is arranged on the plug (4), and a reverse pull steel wire rope (81) is connected with the upper end of the inner plug core (83);
the number of the reverse pull steel wire ropes (81) is multiple, and the number of the reverse pull rings (21) is multiple correspondingly;
the plurality of reversely-pulled steel wire ropes (81) are fixedly connected with the wire collecting block (82), and the wire collecting block (82) is fixedly connected with the second steel wire rope (8);
the end head conduit (2) is fixedly connected with the conduit (3), and the end head of the first steel wire rope (7) extends out of the upper end of the conduit (3).
2. The broken bored pile processing apparatus according to claim 1, wherein: the top of the plug (4) is conical.
3. The broken bored pile processing apparatus according to claim 1, wherein: the bottom of the end head conduit (2) is a bell mouth, and the diameter of the position close to the bottom is larger.
4. The broken bored pile processing apparatus according to claim 1, wherein: the plug (4) is also connected with the end head conduit (2) through a suspension steel wire rope (9);
a steel wire rope pore channel (41) is arranged on the plug (4), a vertical plug inner core (83) is arranged on the plug (4), one end of the suspension steel wire rope (9) is fixedly connected with the plug inner core (83) at the bottom of the steel wire rope pore channel (41), and the other end of the suspension steel wire rope is fixedly connected with the bottom of the end head conduit (2).
5. A construction method using the cast-in-situ bored pile broken-off processing apparatus as set forth in any one of claims 1 to 4, characterized by comprising the steps of:
s1, installing the end head guide pipe (2) at the lowest end of the guide pipe (3), installing the plug (4) at the bottom end of the end head guide pipe (2), leading the first steel wire rope (7) out of the upper end of the guide pipe (3), and tensioning the first steel wire rope (7);
s2, integrally inserting the guide pipe (3) into the non-dry concrete in the cast-in-place pile to a proper depth;
s3, checking whether slurry and water enter the bottom of the end head guide pipe (2), if so, improving the sealing state between the plug (4) and the end head guide pipe (2), and repeating the steps S1 and S2 again; if not, entering the next step;
s4, loosening the first steel wire rope (7), pouring concrete from the guide pipe (3), and separating the plug (4) from the end guide pipe (2);
after the first steel wire rope (7) is loosened, the second steel wire rope (8) is pulled, and the plug (4) is pulled out of the end head guide pipe (2) by utilizing a reverse-pull steel wire rope (81);
the plug (4) is suspended at the lower end of the end head conduit (2) for a certain distance by a suspension steel wire rope (9) so as to be recycled;
in the process of pouring concrete, continuously pulling up the guide pipe (3) according to the pouring process;
through the steps, pile breaking and pile splicing are achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910270338.1A CN110004925B (en) | 2019-04-04 | 2019-04-04 | Broken bored pile processing device and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270338.1A CN110004925B (en) | 2019-04-04 | 2019-04-04 | Broken bored pile processing device and construction method |
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| CN110004925A CN110004925A (en) | 2019-07-12 |
| CN110004925B true CN110004925B (en) | 2021-02-26 |
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| CN112962583A (en) * | 2021-01-27 | 2021-06-15 | 中国建筑一局(集团)有限公司 | Method for quickly connecting broken pile of rotary drilling cast-in-place pile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2003062539A1 (en) * | 2002-01-22 | 2003-07-31 | Henning Baltzer Rasmussen | Reinforcement unit fo reinforcing a footing element when laying pile foundations with a foundation pile, and method for placing a foundation pile and reinforcement of a footing element |
| CN2529914Y (en) * | 2002-02-19 | 2003-01-08 | 刘迈时 | Broken pile treating appts. for building bridge engineering |
| KR100699775B1 (en) * | 2006-01-03 | 2007-03-28 | 이호경 | The head reinforce equipment of a steel pipe pile |
| CN201172819Y (en) * | 2007-10-15 | 2008-12-31 | 曹新恒 | Bottom-separated pile-break processor |
| CN101363222B (en) * | 2008-09-18 | 2010-12-22 | 湖南路桥建设集团公司 | Pile extension under water |
| US9022695B2 (en) * | 2012-10-18 | 2015-05-05 | P3 Infrastructure Consulting Inc. | Apparatus and system for securing a hollow pile in the ground |
| CN103541359B (en) * | 2013-09-18 | 2015-06-17 | 浙江省岩土基础公司 | Method for repairing and treating quality defect of cast-in-place pile |
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