CN112523202A - Broken pile treatment construction method for cast-in-situ bored pile - Google Patents
Broken pile treatment construction method for cast-in-situ bored pile Download PDFInfo
- Publication number
- CN112523202A CN112523202A CN202011322552.6A CN202011322552A CN112523202A CN 112523202 A CN112523202 A CN 112523202A CN 202011322552 A CN202011322552 A CN 202011322552A CN 112523202 A CN112523202 A CN 112523202A
- Authority
- CN
- China
- Prior art keywords
- pile
- broken
- concrete
- central hole
- cast
- 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.)
- Pending
Links
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
-
- 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
- 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
Landscapes
- 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 provides a broken pile processing construction method of a cast-in-situ bored pile, which comprises the steps of carrying out layered and sectional coring on the central part of concrete on the broken pile of the cast-in-situ bored pile through a concrete coring machine, removing the cored concrete one by one until the concrete reaches the top of the broken pile so as to form a central hole from the top of the pile to a cavity of the broken pile, wherein the diameter of the central hole is phi 50-70 cm; the concrete pile is put into the central hole manually or by a robot, and the upper and lower concrete surfaces at the pile breaking position and the floating slurry on the reinforcement cage at the pile breaking position are chiseled by an electric hammer; cleaning the floating slurry at the pile breaking position and then transporting the floating slurry out of the central hole; and (3) extending the steel guide pipe into the central hole to the pile breaking position, and continuously pouring concrete through the steel guide pipe to fill the central hole and the pile breaking cavity with the concrete with the same label as the original design. The invention does not need to remove the whole pile, only needs to take the core to form a hole in the original cast-in-place pile and then fills the concrete, has low construction cost and high speed, saves energy and reduces noise, and is more environment-friendly.
Description
Technical Field
The invention relates to the field of cast-in-situ bored pile construction, in particular to a cast-in-situ bored pile broken pile treatment construction method.
Background
The cast-in-situ bored pile is a foundation for bridge, building construction and hydraulic engineering construction, namely a commonly used pile foundation. However, in the construction process of the cast-in-situ bored pile, due to a complicated geological foundation, variable underground hydrogeology and wrong operation methods in construction, if the underwater concrete cast-in-situ guide pipe is pulled out too fast, the bottom end of the guide pipe is pulled out of a concrete surface, so that the pile is broken. The pile breaking position refers to that mud sand or air is clamped in the concrete of the pile body of the cast-in-situ bored pile, so that the pile body of the cast-in-situ bored pile is incomplete, or the bearing capacity of the pile cannot meet the design requirement.
Fig. 1 is a schematic diagram of placing a reinforcement cage after punching and smashing a bored pile to form a hole in the prior art. As shown in fig. 1, in the conventional method for processing broken bored piles, a percussion drill is usually used to slowly punch and hammer all the reinforced concrete into a hole, clean the hole, lower a reinforcement cage 110 again, and then pour concrete into a pile bore 120 after punching and hammering to form a pile. However, this method is difficult to deal with the broken pile for the large-diameter deep-hole cast-in-place pile, and has long construction time and high treatment cost. If a design changing method is adopted, such as adding the shoulder pole piles, the investment cost is increased, and for the construction of municipal bridges, complex pipelines and underground obstacles or limited places can also result in that the pile breakage can not be treated by adopting the method of adding the shoulder pole piles in some places.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a new construction method for treating broken bored pile, which can maximally retain the reinforced concrete of the pile body of the original broken pile by a manual and mechanical combined construction method, thereby saving the cost and reducing the consumption of the concrete for treating the broken pile.
According to one aspect of the invention, a construction method for broken cast-in-situ bored pile treatment is provided, which includes:
carrying out layered and segmented coring on the central part of the upper part of concrete of the broken bored pile by a concrete core-taking machine, and removing cored concrete one by one until the cored concrete reaches the top of the broken pile of the bored pile so as to form a central hole from the pile top to a broken pile cavity in the bored pile, wherein the diameter of the central hole is phi 50-70 cm;
manually or robotically placing the pile into the central hole, and chiseling floating slurry on the upper and lower concrete surfaces at the pile breaking position and the reinforcement cage at the pile breaking position by using an electric hammer;
cleaning the floating slurry at the pile breaking position and then transporting the floating slurry out of the central hole;
and (3) extending a steel guide pipe into the central hole to the broken pile, and continuously pouring concrete through the steel guide pipe to fill the concrete with the same mark number as the original design of the cast-in-situ bored pile in the central hole and the broken pile cavity.
Wherein, preferred scheme is, before taking core to the central part layering segmentation of the upper portion concrete of bored concrete pile broken pile department through the concrete core machine, still include: detecting and determining the position of the lower end part of the broken pile; and if the lower end part of the broken pile is below the ground water level elevation, firstly making water-stop and water-proof curtains around the broken pile, and then manually operating a concrete core-taking machine to take cores in a layering and subsection manner for the central part of the upper part of the concrete at the broken part of the cast-in-situ bored pile.
Wherein, preferred scheme is, in the manual work or the robot down to carry out the in-process of operation in the central hole, if find that there is the infiltration phenomenon of permeating water in the central hole, stop the interior manual construction of central hole immediately disconnected stake periphery is right water stopping curtain carries out mud jacking sealing treatment.
According to the preferable scheme, in the process of manufacturing the waterproof and waterproof curtain around the broken pile, a high-pressure jet drilling machine is adopted to spray waterproof slurry along the periphery of the broken pile at high pressure so that the cylindrical waterproof curtain is formed around the broken pile.
Preferably, the length of the waterproof curtain is greater than the height of the broken pile.
Wherein, the preferable scheme is that the water-proof slurry is cement slurry containing an accelerating agent and a water-proofing agent.
The concrete core drilling machine is a drilling core drilling machine with the diameter phi of 15-20 cm.
Wherein, the preferred scheme is that the diameter of the central hole is phi 50-70 cm.
Preferably, in the process of manually lowering the central hole for operation, the central hole is ventilated by a ventilation pipe to keep air circulation, and the central hole is illuminated by weak current of 36 volts.
The preferred scheme is that before the workers manually go down into the central hole to operate, workers who go down into the central hole to operate wear safety helmets, safety belts and safety ropes, and wear waterproof clothes and life jackets.
By the cast-in-situ bored pile broken pile treatment construction method, full-pile reinforced concrete does not need to be removed, only the core is taken from the original cast-in-situ bored pile to form a hole, and then concrete is filled, so that the construction method is low in construction cost, high in speed, energy-saving, noise-reducing and more environment-friendly.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is a schematic diagram of a bored pile after punching and tamping to form a hole and then placing a reinforcement cage in the prior art;
fig. 2 is a flowchart of a cast-in-situ bored pile broken pile processing construction method according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a pile break after coring below the water table according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of a broken pile located below ground level and cored for concreting in accordance with an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view of a core-up hole-forming process of a pile-broken according to an embodiment of the invention;
FIG. 6 is a schematic cross-sectional view of a broken pile after cleaning slag according to an embodiment of the invention;
fig. 7 is a schematic cross-sectional view of a pile body above a broken pile after a second concrete pouring according to an embodiment of the invention;
fig. 8 is a schematic cross-sectional view of a broken pile after a second concrete pouring after the slag removal.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
Aiming at the defects of the existing method for treating broken cast-in-place pile, the invention adopts the mode of taking a core from the original cast-in-place pile to form a hole and then filling concrete to carry out the broken pile treatment, thereby simplifying the construction process, reducing the construction cost and improving the construction efficiency.
Fig. 2 is a flowchart of a cast-in-situ bored pile broken pile processing construction method according to an embodiment of the present invention. As shown in fig. 2, the construction method for treating broken cast-in-situ bored pile provided by the present invention includes the following steps:
s210: and (3) carrying out layered and segmented coring on the central part of the concrete of the upper part of the broken bored pile through a concrete coring machine, and removing the cored concrete one by one until the cored concrete reaches the top of the broken pile of the bored pile so as to form a central hole from the top of the pile to the bottom of the broken pile in the bored pile.
During the coring process of the manually operated concrete core drilling machine, the formed cast-in-situ bored pile needs to be cored in a layered and segmented manner from the pile top of the cast-in-situ bored pile until the top of the broken pile, namely, the core is cored in a layered and segmented manner to form a hole in the center of the concrete on the upper part of the broken pile of the cast-in-situ bored pile. In the coring process, each cored concrete block is lifted one by one to the outside of a coring hole after being taken and removed until a central hole formed by coring reaches a broken pile position of a cast-in-situ bored pile, so that the central hole is communicated with a broken pile hole, and the operation of a worker or a robot to the broken pile hole at a later stage is facilitated.
In a preferred embodiment of the invention, a small-diameter core drilling and coring machine is adopted as the concrete core drilling machine, and the small-diameter core drilling and coring machine is operated with water, so that dust can be effectively avoided, the operating environment of workers is optimized, and the occupational health is facilitated.
In addition, before the concrete core extractor cores the central part of the upper part of concrete at the broken part of the cast-in-situ bored pile in a layered and segmented manner, the position of the lower end part of the broken pile needs to be determined through detection, and whether the broken pile is below the underground water level or not needs to be judged.
If the broken pile is above the ground water level and the surrounding is not affected by ground water, the coring operation can be normally carried out according to the subsequent steps. If the lower end part of the broken pile is below the underground water level elevation, waterproof curtains are needed to be arranged on the periphery of the broken pile, and then core is conducted on the central part of the concrete on the broken part of the cast-in-situ bored pile in a layering and subsection mode through a concrete core drilling machine.
Fig. 3 is a schematic diagram of a pile break positioned below the water table for coring according to an embodiment of the invention. As shown in fig. 3, the waterproof curtain 300 is wrapped outside the reinforcement cage 110 of the bored pile, and since the whole broken pile is below the ground water level, the waterproof curtain 300 not only covers the whole broken pile portion of the bored pile, but also partially extends up and down to ensure the waterproof effect.
The diameter of a central hole 400 formed after the core of the concrete core extractor is taken for the upper part of the concrete at the broken part of the cast-in-situ bored pile in a layered and segmented manner is not required to be too large, and only the diameter which can meet the up-and-down operation of one person is required to be achieved, so that the pile body concrete 500 of the original cast-in-situ bored pile is kept as far as possible, and the quantity of the concrete poured in the later period is reduced. In a specific construction process, the diameter of the central hole can be controlled to be phi 50-70cm according to requirements, so that pile body concrete on an original broken pile is reserved to the maximum extent, the cost is saved, and the workload of treating the broken concrete is reduced.
After the core of the upper concrete part of the broken part of the bored pile is taken in a layered and segmented manner, the central part of the upper concrete part reaches a broken pile cavity 600 formed by broken piles.
In the process of manufacturing the waterproof and waterproof curtain around the broken pile, a high-pressure jet drilling machine can be used for spraying waterproof slurry along the periphery of the broken pile at high pressure, so that the waterproof slurry is solidified around the broken pile to form a cylindrical waterproof curtain, and the infiltration of underground water when the floating slurry is cleaned after the hole is drilled in the center of the broken pile is avoided, thereby influencing the treatment of the broken pile.
It should be noted that, if all the broken piles are located below the ground water level, the length of the waterproof curtain is slightly greater than the height of the broken piles, so as to ensure the waterproof effect; if the broken pile part is positioned below the underground water level, the length of the waterproof curtain only needs to be slightly larger than the height of the broken pile part positioned below the underground water level.
The waterproof curtain is simple to construct and operate and safe to use, the purpose of the waterproof curtain is to isolate the influence of underground water on the construction of the broken pile, therefore, the waterproof curtain is only used at the broken pile and only used for stopping and insulating water at the broken pile, and the construction length only needs to meet the purpose to construct the waterproof curtain.
The water-resisting slurry can adopt a cement slurry containing an accelerating agent and a waterproof agent.
S220: after the construction of the central hole 400 is completed, the pile is manually or robotically lowered into the central hole, and the electric hammer is used to chisel out the floating slurry on the upper and lower concrete surfaces of the pile-breaking hole 600 and the reinforcement cage at the pile-breaking position. The purpose of chiseling laitance is that the position of broken pile in the later stage poured concrete can be better combined with the original bored pile.
It should be noted that, for the safety of construction, in the process of working in the central hole by a human or a robot, if the phenomenon of water seepage and water permeation is found in the central hole, the manual construction in the central hole is immediately stopped, and the waterproof curtain is subjected to grouting sealing treatment on the periphery of the broken pile.
S230: and cleaning the floating slurry at the broken pile position and then transporting the floating slurry out of the central hole.
In the step, the broken pile (namely, in the broken pile cavity) can be directly cleaned by the bottom of the lower hole of a man-made or robot, and the cleaned mixture of the dregs, such as mud, sand, floating slurry and the like can be conveyed out of the central hole.
S240: and (3) extending the steel guide pipe into the central hole to the broken pile, and continuously pouring concrete through the steel guide pipe to fill the central hole and the broken pile cavity with concrete with the same label as the original design of the bored pile.
The same-grade concrete is adopted to fill the space of the broken pile and the central hole of the part above the broken pile, so that the treated broken pile can meet the design and use requirements.
And at this moment, the broken pile and the pile body part above the broken pile are connected by pouring concrete into the central hole, and the broken pile treatment is completed.
The final step of pouring concrete through the steel conduit may be referred to as a second step of pouring concrete. FIG. 4 is a schematic diagram of a cored concrete pile located below the ground level and having a broken pile according to an embodiment of the present invention, and FIG. 5 is a schematic diagram of a cross-sectional view of a hole formed by coring above the broken pile according to an embodiment of the present invention; FIG. 6 is a schematic cross-sectional view of a broken pile after cleaning slag according to an embodiment of the invention; fig. 7 is a schematic cross-sectional view of a pile body above a broken pile after a second concrete pouring according to an embodiment of the invention; fig. 8 is a schematic cross-sectional view of a broken pile after a second concrete pouring after the slag removal.
As shown in fig. 3 to 8, after the second pouring, the original central hole 400 and the pile-breaking hollow 600 are filled with the second poured concrete 700, so that the original pile body and the pile-breaking of the whole cast-in-situ bored pile are integrated again.
According to the technical scheme and the drawings, the broken pile processing construction method of the cast-in-situ bored pile provided by the invention has the advantages that the broken pile is processed by adopting a mode of coring and filling, compared with the original mode of 'impacting and manufacturing the pile again', a large amount of construction time is saved, and the delay of the whole construction period caused by pile breaking is avoided; and, only need satisfy the diameter that one person's operation from top to bottom can central hole, not only reduced the construction volume, reduced the influence to former pile body, still practiced thrift the quantity of the concrete that later stage was filled in a large number. After the final broken pile treatment is completed, the pile body of the whole cast-in-situ bored pile is connected by the original central hole 400 and the integrally cast-in-situ concrete in the broken pile cavity 600, so that the treated broken pile can meet the design and use requirements to the maximum extent.
The above technical solution of the present invention will be described in more detail with reference to a specific example of constructing the pile-broken site of the bored pile of the grand bridge of a certain expressway.
The construction pile diameter of the cast-in-situ pile for the highway grand bridge is 2.8 meters, the pile length is 55 meters, the pile is designed to be a friction pile, the hole forming is realized by rotary drilling, underwater concrete pouring (C30) is realized, four metal sound measuring pipes are uniformly pre-embedded around the pile, after the concrete pouring is carried out for 7 days, ultrasonic detection is carried out, broken pile is found at the position 35 meters away from the pile top, the broken pile length is 2 meters through ultrasonic graphic analysis, the broken pile position is below the ground water level, the elevation of the ground water level is 8 meters away from the pile top at the moment, and the soil at the broken pile position is silt.
According to the construction method for treating the broken pile of the cast-in-situ bored pile, the broken pile position is below the underground water level, so that a waterproof and waterproof curtain needs to be made first. Adopting a rotary spraying secant pile with the diameter of 100mm to carry out waterproof treatment on the periphery of a broken pile, wherein the lapping lengths of an upper waterproof curtain and a lower waterproof curtain of the broken pile and a pile body are respectively 1.5 m, the rotary spraying material is 425# cement paste accelerating agent and waterproofing agent, and adopting directional swinging and spraying on the periphery of pile concrete to ensure that the cement paste mixed with the accelerating agent and the waterproofing agent is tightly combined with the pile body concrete of the broken pile so as to prevent water seepage and water leakage.
In the construction example, the wall thickness of the waterproof curtain is 0.8 m, and the accelerating agent adopts water glass, and the mixing amount of the water glass is 4% of the using amount of cement; the waterproof agent adopts epoxy resin, the doping amount of the waterproof agent is 4% of the cement dosage, and the water cement ratio is 0.45, so that the integral rigidity and strength of the waterproof curtain wall are enhanced, and the waterproof curtain wall is prevented from cracking and water seepage.
After the waterproof curtain of the broken pile is made, lofting is carried out by taking the center of the concrete at the top of the pile as the circle center, and a hole with the diameter of 0.6 m is drilled, namely a core hole is drilled for manual operation. Then, a concrete core drilling machine with a drilling barrel diameter phi of 20cm is adopted, layered and segmented core drilling is carried out at the speed of one meter each time, a central hole (namely a manual hole) with the diameter of 0.6 meter is made until the top of a broken pile, the central hole is communicated with the broken pile cavity, and therefore manual or robot operation can be carried out to the broken pile cavity at the later stage.
Then manually cleaning the floating slurry at the broken pile position: and (3) removing the broken pile cavity by one person, chiseling the floating slurry and the slag on the upper and lower concrete surfaces and the peripheral reinforcement cage of the broken pile cavity by using a miniature electric hammer, then removing the chiseled floating slurry and slag, and carrying out hole removal by using an iron bucket. In the cleaning process, the ventilation pipe is used for ventilating the central hole to keep the air circulation, the 36-volt weak current is used for lighting, and meanwhile other safety measures of people who go down are taken, such as wearing a safety helmet, tying a safety belt and a safety rope, wearing a waterproof garment, a life jacket and the like, so that water seepage and water permeation accidents are prevented. If water seepage is found out, grouting and sealing treatment should be carried out on the periphery of the waterproof curtain as soon as possible.
After the slag and the laitance at the broken pile are removed, a steel guide pipe (phi 300) is put down to the position, 200cm away from the hole bottom of the central hole, of the broken pile, C30 concrete is adopted, the slump is 19cm, a small concrete funnel is adopted to carry out continuous concrete pouring on the central hole until the central hole, including the broken pile and the artificial hole, is filled with the concrete.
And after 7 days of the pile breaking treatment construction, carrying out ultrasonic detection on the treated cast-in-situ bored pile again to determine the pile as a type I pile.
Through the above description of the technical scheme and the specific implementation manner of the invention, it can be determined that, compared with the traditional pile-breaking treatment method, the cast-in-situ bored pile breaking treatment construction method provided by the invention has the following advantages:
1) the speed is high. The traditional method needs to firstly wash out the whole pile by using impact chisel, then pour the cast-in-situ bored pile again, and needs 2 months of construction period before and after, but the construction method for treating broken cast-in-situ bored pile only needs 7 days of construction period;
2) and the cost is saved. The traditional method needs about 120 ten thousand yuan for treating the broken pile, while the construction method for treating the broken pile of the cast-in-situ bored pile only needs about 20 ten thousand yuan, so that the cost can be saved by 100 ten thousand yuan;
3) energy conservation and noise reduction. The construction method for treating broken cast-in-situ bored piles avoids the noise of impact hole forming in the traditional construction process, and can effectively save electric energy and materials;
4) is safer and more environment-friendly. Compared with the traditional method, the construction method for treating broken cast-in-situ bored piles is safer and more environment-friendly, and avoids a large amount of construction waste.
5) The quality is excellent. A plurality of application examples show that the broken pile treatment construction method of the cast-in-situ bored pile is adopted, ultrasonic inspection is carried out after the broken pile treatment, and the treated broken pile is I-type pile.
The cast-in-situ bored pile broken-off processing construction method according to the present invention is described above by way of example with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various modifications may be made to the cast-in-situ bored pile breaking treatment method provided by the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (10)
1. A broken pile processing construction method for a cast-in-situ bored pile is characterized by comprising the following steps:
carrying out layered and segmented coring on the central part of the upper part of concrete of the broken bored pile by a concrete core-taking machine, and removing cored concrete one by one until the cored concrete reaches the top of the broken pile of the bored pile so as to form a central hole from the pile top to a broken pile cavity in the bored pile, wherein the diameter of the central hole is phi 50-70 cm;
manually or robotically placing the pile into the central hole, and chiseling floating slurry on the upper and lower concrete surfaces at the pile breaking position and the reinforcement cage at the pile breaking position by using an electric hammer;
cleaning the floating slurry at the pile breaking position and then transporting the floating slurry out of the central hole;
and (3) extending a steel guide pipe into the central hole to the broken pile, and continuously pouring concrete through the steel guide pipe to ensure that the central hole and the broken pile cavity are filled with concrete with the same mark number as the original design of the cast-in-situ bored pile.
2. The cast-in-situ bored pile breaking treatment construction method according to claim 1, further comprising, before the core-taking in a concrete core-layer and section-wise core-taking of the central portion of the upper portion of concrete at the site of the bored pile breaking by a concrete core-taking machine:
detecting and determining the position of the lower end part of the broken pile; wherein the content of the first and second substances,
and if the lower end part of the broken pile is below the underground water level elevation, firstly making a water-stop and water-proof curtain around the broken pile, and then manually operating a concrete core-taking machine to take cores in a layering and subsection manner on the central part of the concrete at the broken part of the cast-in-situ bored pile.
3. The cast-in-situ bored pile broken-off processing construction method according to claim 2, wherein, during the work of manually or robotically lowering the pile into the central hole,
and if the phenomenon of water seepage and water permeation is found in the central hole, stopping manual construction in the central hole immediately, and performing grouting sealing treatment on the waterproof curtain at the periphery of the broken pile.
4. The cast-in-situ bored pile broken pile treatment construction method according to claim 2, wherein, in a process of making a waterproof and waterproof curtain around the broken pile,
and (3) high-pressure spraying water-proof slurry along the periphery of the broken pile by adopting a high-pressure jet grouting drilling machine so as to form a cylindrical water-proof curtain around the broken pile.
5. The cast-in-situ bored pile breaking treatment construction method according to claim 3 or 4,
the length of the waterproof curtain is greater than the height of the broken pile.
6. The cast-in-situ bored pile breaking treatment construction method according to claim 3 or 4,
the water-proof slurry is cement slurry containing a quick-setting agent and a water-proofing agent.
7. The cast-in-situ bored pile breaking treatment construction method according to claim 1,
the concrete core drilling machine is a drilling core drilling machine with the diameter phi of 15-20 cm.
8. The cast-in-situ bored pile breaking treatment construction method according to claim 1,
the diameter of the central hole is phi 50-70 cm.
9. The cast-in-situ bored pile breaking treatment construction method according to claim 1, wherein, during a manual work into the central hole,
ventilation was used in the central hole to keep air circulating, and low current at 36 volts was used for illumination.
10. The cast-in-situ bored pile breaking treatment construction method according to claim 1, wherein workers who work down into the central hole wear safety helmets, safety belts, safety ropes, waterproof clothing, and life jackets before manually working down into the central hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011322552.6A CN112523202A (en) | 2020-11-23 | 2020-11-23 | Broken pile treatment construction method for cast-in-situ bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011322552.6A CN112523202A (en) | 2020-11-23 | 2020-11-23 | Broken pile treatment construction method for cast-in-situ bored pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112523202A true CN112523202A (en) | 2021-03-19 |
Family
ID=74992976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011322552.6A Pending CN112523202A (en) | 2020-11-23 | 2020-11-23 | Broken pile treatment construction method for cast-in-situ bored pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112523202A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293759A (en) * | 2021-06-30 | 2021-08-24 | 西南交通大学 | Implanted steel pipe concrete reinforcing method for concrete filling pile broken pile |
| CN114855789A (en) * | 2022-03-25 | 2022-08-05 | 标力建设集团有限公司 | Construction method for broken pile treatment of engineering pile in soft soil area |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0398762A1 (en) * | 1989-05-18 | 1990-11-22 | Kvaerner Cementation Foundations Limited | Improvements relating to cementitious structures |
| CN102926385A (en) * | 2012-11-21 | 2013-02-13 | 江苏省交通工程集团有限公司 | Method for treating pile-forming mud-clamping defect of large-diameter filling pile of bridge |
| CN103437351A (en) * | 2013-09-18 | 2013-12-11 | 浙江省岩土基础公司 | Treatment method of deviation and fracture remediation of pile body of filling pile |
| CN104988914A (en) * | 2015-06-11 | 2015-10-21 | 云南建工基础工程有限责任公司 | Cast-in-situ bored pile breakage processing method under water area environment |
| CN110409433A (en) * | 2019-07-26 | 2019-11-05 | 山西华晋岩土工程勘察有限公司 | The construction system and method for basement process are carried out using the bored concrete pile with steel bushing |
| CN111877329A (en) * | 2020-07-03 | 2020-11-03 | 广州市第一市政工程有限公司 | Pile-in-pile broken pile and pile-splicing construction method |
| CN111945716A (en) * | 2020-06-22 | 2020-11-17 | 广东省建筑科学研究院集团股份有限公司 | Reinforcing construction method for mud-sandwiched fractured cast-in-place pile |
-
2020
- 2020-11-23 CN CN202011322552.6A patent/CN112523202A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0398762A1 (en) * | 1989-05-18 | 1990-11-22 | Kvaerner Cementation Foundations Limited | Improvements relating to cementitious structures |
| CN102926385A (en) * | 2012-11-21 | 2013-02-13 | 江苏省交通工程集团有限公司 | Method for treating pile-forming mud-clamping defect of large-diameter filling pile of bridge |
| CN103437351A (en) * | 2013-09-18 | 2013-12-11 | 浙江省岩土基础公司 | Treatment method of deviation and fracture remediation of pile body of filling pile |
| CN104988914A (en) * | 2015-06-11 | 2015-10-21 | 云南建工基础工程有限责任公司 | Cast-in-situ bored pile breakage processing method under water area environment |
| CN110409433A (en) * | 2019-07-26 | 2019-11-05 | 山西华晋岩土工程勘察有限公司 | The construction system and method for basement process are carried out using the bored concrete pile with steel bushing |
| CN111945716A (en) * | 2020-06-22 | 2020-11-17 | 广东省建筑科学研究院集团股份有限公司 | Reinforcing construction method for mud-sandwiched fractured cast-in-place pile |
| CN111877329A (en) * | 2020-07-03 | 2020-11-03 | 广州市第一市政工程有限公司 | Pile-in-pile broken pile and pile-splicing construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113293759A (en) * | 2021-06-30 | 2021-08-24 | 西南交通大学 | Implanted steel pipe concrete reinforcing method for concrete filling pile broken pile |
| CN114855789A (en) * | 2022-03-25 | 2022-08-05 | 标力建设集团有限公司 | Construction method for broken pile treatment of engineering pile in soft soil area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11214938B2 (en) | Construction method for pouring concrete in karst cave | |
| CN105780763B (en) | Mesoporous vibrates the construction method of casing retaining wall long auger guncreting pile | |
| CN206956714U (en) | Down-the-hole impacts rotating spraying mixture pile construction equipment | |
| CN103993598B (en) | One is drawn hole and is implanted cloth bag crushed stone grouting pile and construction method | |
| CN107747312B (en) | Method for drilling and grouting construction of gravel stratum | |
| CN105442605B (en) | Extract PHC and be reused in deep foundation pit supporting construction method | |
| CN110344400A (en) | The hard rock pore-forming construction technology of churning driven opportunity | |
| CN112523202A (en) | Broken pile treatment construction method for cast-in-situ bored pile | |
| CN108166513B (en) | Hole forming process for dual-purpose hole of anchor hole and drain hole in muck slope | |
| CN112411642A (en) | Reinforced structure for defect treatment of large-diameter concrete cast-in-place pile and construction method | |
| CN105239561A (en) | Long spiral mix spray pre-grouting press concrete post-inserted steel reinforcement cage cast-in-place pile construction process | |
| CN106351230A (en) | Soft soil area basement support construction method | |
| CN112502139A (en) | Construction method for excavation of deep pit by three-axis stirring pile curtain water stop and rotary digging cast-in-place pile support | |
| CN110159186A (en) | Slurry drilled pile drilling construction method | |
| CN107587502B (en) | Construction method for rotary drilling hole-forming pressure-grouting cement soil occlusion curtain pile | |
| CN206428707U (en) | A kind of integrated pile tube dado structure of pattern foundation pit supporting structure precipitation | |
| CN108677959A (en) | A kind of grouting tube and grouting construction method suitable for mortar depositing construction under the conditions of limited space | |
| CN114541408B (en) | Front upper part wind-containing well structure of underground station end well and underpass construction method thereof | |
| CN104988981B (en) | A kind of well construction method of riding on present situation operation shield method drainage pipeline | |
| CN215758989U (en) | Long auger drilling machine and system | |
| CN108049424A (en) | Sunk type basement structure | |
| CN203866821U (en) | Lead hole implant cloth bag gravel grouting pile | |
| CN112796308A (en) | Long spiral drilling machine and cast-in-place pile construction method | |
| CN113668529A (en) | Construction method for breaking and removing pile head with template based on steel wedge-shaped gap | |
| CN108086322B (en) | Mud skin removing device and method for improving bearing capacity of cast-in-place pile by using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
|
| RJ01 | Rejection of invention patent application after publication |