CN111305193B - Construction method for pouring concrete pile by using telescopic guide pipe - Google Patents
Construction method for pouring concrete pile by using telescopic guide pipe Download PDFInfo
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- CN111305193B CN111305193B CN202010195869.1A CN202010195869A CN111305193B CN 111305193 B CN111305193 B CN 111305193B CN 202010195869 A CN202010195869 A CN 202010195869A CN 111305193 B CN111305193 B CN 111305193B
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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
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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Abstract
The invention relates to an underwater concrete pouring construction method, in particular to a construction method for pouring a concrete pile by using a telescopic guide pipe. At present, most of underwater concrete pouring utilizes the self-weight pouring mode of concrete materials, and the defects of discontinuous pouring operation, pipe blockage and the like exist in construction. According to the technical scheme, the telescopic guide pipe with the bottom door and the pipe body capable of being sealed is adopted, the first poured concrete is conveyed to the bottom of the pile hole, the bottom door is opened to release the concrete for bottom sealing, the concrete is continuously pumped by the delivery pump for pouring, and meanwhile, the guide pipe is synchronously contracted along with the rising of the concrete surface until the pouring operation is completed. The construction method has the advantages that the pressure in the pipe is controllable in the concrete pouring process, the telescopic action of the pipe body is uniform and consistent when the guide pipe is lifted, the problems that in the prior art, the pouring operation is interrupted for multiple times due to the splitting of the pipe, the interruption time is long, the construction efficiency is low, the process is difficult to control, the engineering quality is influenced and the like are solved, and the problem of pile foundation quality caused by concrete segregation, slag inclusion and the like is solved.
Description
Technical Field
The invention relates to a concrete pouring construction method, in particular to a construction method for pouring a concrete pile by using a telescopic guide pipe.
Background
At present, most of the pouring construction of underwater concrete piles utilizes the dead weight of concrete to pour along a guide pipe, namely, a hopper with a lifting cover at the bottom is arranged at the top of a pouring material pipe, the concrete is preset in the hopper, a piston ball body with the diameter similar to that of the material pipe is placed at the upper end port of the material pipe, the lifting cover is opened when the volume of the concrete meets the requirement of the bottom burial depth, the concrete quickly pours into a pile hole under the action of gravity, and the piston ball body forcibly discharges water (or wall protection slurry) entering the pipe from the bottom of the material pipe in the descending process.
In actual construction, due to the influences of various factors such as the diameter of the guide pipe, the drainage effect of the piston ball, the specific gravity of the wall protection slurry, the embedding depth of the end part of the guide pipe, the concrete slump and the like, the concrete falling is blocked, and the blockage phenomenon of the material pipe is easy to occur; particularly, after the first batch of concrete material is poured, the sudden change of the inside and the outside of the pipe easily causes the too large pressure of external water or slurry to permeate into the guide pipe to be mixed with the concrete poured later, thereby greatly increasing the difficulty of operation control and seriously influencing the engineering quality.
In addition, along with the rise of the liquid level of the concrete material in the pouring process, the material pipe is time-consuming and labor-consuming to dismantle, so that the pouring operation is interrupted for many times, the operation time is prolonged, the working efficiency is reduced, and the concrete pouring of two adjacent cars (buckets) has an interval (for ensuring the engineering quality, the interval between the two cars of concrete is regulated to be not more than 30 min), so that adverse effects are generated on the concrete pouring quality to a certain extent, even an air chamber and the like are formed in the pipe, the pouring operation is failed or the pile is broken, and the great economic loss is caused.
Disclosure of Invention
Aiming at the problems, the invention provides a construction method for pouring a concrete pile by using a telescopic guide pipe, which directly sends concrete to the bottom of a pile foundation by using a sealing guide pipe to carry out concrete back cover pouring, maintains the pressure in the pipe in the whole pouring operation, and avoids the quality problem of the bottom of the pile foundation caused by pipe blockage, concrete segregation, slag inclusion and the like.
The purpose of the invention is realized by the following technical scheme:
a construction method for filling a concrete pile by using a telescopic guide pipe comprises the following steps:
the method comprises the following steps:
1) and construction preparation:
arranging a construction platform at the top of the pile hole, erecting a supporting mast for installing a guide pipe, placing the guide pipe and completing equipment positioning; testing the diameter, depth and sediment thickness of the pile hole;
the guide pipe adopts a telescopic pipe body structure, the joint of each pipe body is provided with a sealing mechanism, and the lower port of the guide pipe is provided with a bottom door which can be opened and closed;
2) cleaning the hole:
setting the lowering depth of the guide pipe according to construction requirements; opening a guide pipe bottom door, putting the pipe body section by section to a set depth at the bottom of the pile hole, and sealing the joint of the pipe body, wherein the sealing treatment is finished before the joint of the pipe body enters the pile hole;
the upper end of the guide pipe is connected with a water pump through a pump pipe, high-pressure water is injected through the water pump to carry out hole cleaning operation, the water pressure and the water flow are adjusted according to the condition of the sediment in the hole, the sediment of the hole bottom wall protection slurry is flushed, the water injection is stopped after the construction requirement is met, and the guide pipe is integrally lifted out of the pile hole by recovering the pipe body section by section; removing the seal after the pipe body joint is exposed out of the pile hole;
3) and sealing the bottom by initially pouring concrete:
setting the secondary lowering depth of the guide pipe according to construction requirements, closing a bottom door of the guide pipe, lowering the pipe body section by section to a preset depth of the hole bottom, sealing the joint of the pipe body before entering the pile hole, and strictly preventing water or wall protection slurry in the pile hole from permeating into the guide pipe from the joint of the pipe body;
the upper end of the guide pipe is connected with a concrete delivery pump through a pump pipe; setting the volume of the initially poured concrete for bottom sealing according to the bore diameter and the burial depth requirement of the guide pipe, starting a concrete delivery pump to inject the initially poured concrete into the guide pipe, and relieving pressure at the joint of the pipe body positioned outside the pile hole to balance the pressure inside and outside the pipe so as to prevent the concrete from being incapable of being pumped due to overlarge pressure inside the pipe;
after the volume of the concrete injected into the guide pipe reaches the requirement of the buried depth, opening a bottom door, continuously injecting the concrete into the guide pipe by a concrete delivery pump to apply pressure, and simultaneously adjusting and controlling the pressure in the pipe by a pipe body connecting part sealing mechanism exposed outside a pile hole to enable the concrete to flush the bottom and upwelling along the bottom of the pile hole under the dual actions of self weight and the pressure in the pipe, so that bottom sealing pouring is completed, and the water entering into the pipe is prevented from breaking the pile;
4) and (3) perfusion:
after the concrete upwells to reach the set conduit buried depth position, continuously pumping the concrete for continuous pouring, and controlling and adjusting the pressure in the conduit by utilizing a conduit body connection sealing mechanism outside the pile hole;
in the concrete pumping process, the pipe bodies are withdrawn section by section along with the ascending lifting guide pipe on the surface of the concrete, and the sealing of the connection part is removed after the connection part of the two pipe bodies is lifted to the outside of the pile hole; after the pipe body retracts, sealing the joint of the pipe body which is released from sealing again according to the pressure in the guide pipe and the flowing speed of the concrete so as to maintain the pressure in the pipe;
the telescopic guide pipe is used for ensuring that the concrete in the hole meets the requirement of the burial depth in the recovery process so as to prevent pile breakage;
5) and continuously pouring until the concrete surface reaches the designed height, withdrawing all the pipe bodies to lift the guide pipe out of the pile hole, and finishing pouring.
Further, in the step 1), the verticality of the equipment positioning conduit pipe is not more than +/-0.1 degree.
Further, the deviation of the descending depth of the guide pipe in the step 2) is less than or equal to 0.1 m.
Further, the deviation of the descending depth of the guide pipe in the step 3) is less than or equal to 0.1 m.
Further, the primary filling quantity V1 ≧ pi (D-D)/4 × H had been used for bottoming in step 3)
In the formula
V1-volume of needed concrete inside the pipe, unit m of thin-wall labor;
d is the diameter of the pile hole in m;
d-catheter diameter, in m;
h is the buried depth of the conduit in the concrete, unit m.
Further, in the pouring process in the step 3) or the step 4), when the concrete pumping volume is greater than 20% of the designed buried depth volume and the surface of the concrete does not rise, considering that collapsed holes and karst caves exist in the holes, the total pouring volume of the pile holes at this time needs to be increased.
Further, in the lifting process of the pipe body of the guide pipe in the step 4), the concrete burial depth is strictly less than 2 m.
Further, the diameters of all the sections of the pipe bodies of the guide pipe are gradually increased from top to bottom.
Furthermore, the joints of the pipe bodies of all the sections of the conduit are sealed and locked through annular bag bodies, the pipe wall contact surfaces of the adjacent two pipe bodies are provided with annular clamping grooves, and the annular bag bodies are embedded in the annular clamping grooves.
Furthermore, the pump pipe is connected with the guide pipe in an inserting mode, and the joint of the pump pipe and the guide pipe is sealed and locked through the annular bag body.
The invention has the beneficial effects that:
the invention provides an underwater construction method for a concrete cast-in-place pile by using a telescopic guide pipe, which utilizes the characteristics that the guide pipe can be sealed and the length can be continuously and stably adjusted, quickly lowers the guide pipe to enable a lower pipe opening to reach a set depth, directly sends a first batch of concrete to the bottom of a pile hole to release a back cover, continuously performs concrete casting afterwards, uniformly and continuously lifts and recovers the guide pipe along with the rise of a concrete surface, does not need to split a pipe body section by section, greatly simplifies the working process, and realizes continuous operation from the beginning of bottom-sealing casting to the completion of casting; the problems that in the prior art, the filling operation is interrupted for many times, the interruption time is long, the pipe body is lifted in a segmented mode, the construction efficiency is low, the engineering quality is affected, and the control is difficult to achieve are solved.
In addition, can seal or the pressure release operation at any time to the body of pipe according to the construction situation, make and maintain required pressure throughout the pipe, and the structure that each body of pipe from top to bottom diameter increases gradually has stopped concrete jamming, stifled pipe phenomenon, has overcome the defect that relies on the dead weight of concrete material to pour into, the effectual emergence of preventing phenomenons such as disconnected stake, super-irrigation, greatly reduced the operation degree of difficulty, improved engineering quality and efficiency of construction.
The technical means of the present invention will be described in detail below with reference to specific embodiments.
Drawings
FIG. 1 is a schematic view of the equipment installation and construction preparation of the present invention;
FIG. 2 is a schematic view of a hole cleaning operation according to the present invention;
FIG. 3 is a schematic view of a bottom sealing pour operation of the present invention;
FIG. 4 is a schematic diagram of the concrete pouring and pipe lifting of the present invention.
Detailed Description
In the figure: 1. the construction method comprises the following steps of construction platform 2, supporting mast 3, guide pipe 4, bottom door 5 and pile hole.
Examples
As can be seen from fig. 1 to 4, the construction method for filling a concrete pile with a telescopic guide pipe according to the present invention includes the steps of:
1) and construction preparation:
a construction platform 1 is arranged at the top of a pile hole 5 to be poured, a supporting mast 2 for placing a guide pipe is erected on the construction platform, and a lifter is arranged on the supporting mast and driven by a hydraulic motor or a motor to lift along the mast; the guide pipe 3 is hung on the supporting mast through a lifter;
the guide pipe adopts a telescopic pipe body structure, and the diameter of each section of pipe body of the guide pipe is increased section by section from top to bottom after the pipe body is sleeved, assembled and stretched; the lower port of the conduit (namely the lower end of the lowest section of the conduit body) is provided with a bottom door which can be controlled to open and close and is used for sealing; each section of pipe body of pipe links up the department and is equipped with sealing mechanism, and this sealing mechanism adopts annular utricule, and its mounting means is: the pipe wall contact surfaces of the two adjacent pipe bodies are provided with annular clamping grooves, the annular bag bodies are embedded in the annular clamping grooves, and the pipe walls of the adjacent pipe bodies are pressed through expansion of the bag bodies to realize sealing and locking between the pipes; the bottom door is clamped with the port of the guide pipe and is driven to open through the control of a hydraulic mechanism or a lifting rope.
The construction platform is provided with a concrete delivery pump, a water pump and a control system, and is debugged and positioned; the verticality deviation of the conduit is less than or equal to +/-0.1 degree;
and testing the diameter, the depth and the sediment thickness of the pile hole.
The verticality, the aperture, the hole depth and the sediment thickness of the conduit can be measured by adopting a conventional method.
2) Cleaning the hole:
setting the lowering depth of the guide pipe according to construction requirements, opening a bottom door, lowering the guide pipe to the lower end of a pipe opening to reach the set depth of the bottom of the pile hole through a lifter, wherein the depth deviation is less than or equal to 0.1 m; in the process, the pipe body of the guide pipe is put down section by section from the pipe body at the lower part, and the annular sac body at the connection part of each pipe body is inflated to carry out sealing treatment, wherein the sealing treatment is finished before the connection part of the pipe bodies enters the pile hole;
the upper end of the guide pipe is connected with a water pump through a pump pipe, the water pump is started to inject high-pressure water to carry out hole cleaning operation, the water pressure and the water flow are adjusted according to the condition of the sediment in the hole in the process, the sediment of the hole bottom wall protection slurry is flushed, the water injection is stopped after the construction requirement is met, the pipe bodies are recovered section by section from the upper pipe body, and the guide pipe is integrally lifted out of the pile hole; and in the lifting process, the sealing of the joint is removed after the pipe body joint is exposed out of the pile hole.
3) And primary pouring and bottom sealing:
setting the volume of the initially poured concrete for bottom sealing (namely the volume of the first batch of concrete arranged in the front guide pipe before the bottom door is opened) according to the aperture of the pile hole and the burial depth requirement of the guide pipe in the concrete;
setting the secondary lowering depth of the guide pipe according to construction requirements, closing a bottom door of the guide pipe, and lowering the pipe body section by section to enable a lower port of the guide pipe to reach a preset depth, wherein the lowering depth deviation of the guide pipe is less than or equal to 0.1 m; sealing the joints of the pipe bodies in time during the lowering process of the guide pipe, wherein the sealing operation is finished outside the pile hole (namely, the annular bag body is inflated before the joints of the pipe bodies enter the pile hole), and water or wall protection slurry in the pile hole is strictly prevented from permeating into the guide pipe;
the upper end of the guide pipe is connected with a concrete delivery pump through a pump pipe, the concrete delivery pump is started to inject the initially poured concrete into the guide pipe, the pressure inside and outside the guide pipe is relieved through an annular bag body exposed at the connecting part of the pipe body outside the pile hole in the process, and the situation that the concrete cannot be injected due to the fact that the pressure in the guide pipe is too large is prevented (the pressure in the guide pipe can be obtained according to the pumping pressure judgment of the concrete delivery pump).
After the volume of concrete injected into the conduit reaches the requirement of the buried depth, the bottom door is opened, meanwhile, the concrete is continuously injected into the conduit through the concrete delivery pump to exert pressure, and the pressure in the conduit is adjusted and controlled through the sealing mechanism at the joint of the conduit body exposed out of the pile hole, so that the concrete is flushed at the bottom and upwelled along the bottom of the pile hole under the dual functions of self weight and the pressure in the conduit, the bottom sealing and pouring operation is completed, and the water inflow in the conduit is prevented from breaking the pile.
Calculating the primary irrigation amount for sealing the bottom of the conduit: v1 ≧ pi (D-D)/4 XH
In the formula
V1-volume of needed concrete inside the pipe, unit m of thin-wall labor;
d is the diameter of the pile hole in m;
d-catheter diameter, in m;
h is the buried depth of the conduit in the concrete, unit m.
4) And (3) perfusion:
when the concrete upwells to reach the set conduit buried depth position, the concrete is continuously pumped to carry out continuous filling operation, and the conduit is sealed and decompressed through inflation and deflation of a sealing mechanism (annular bag body) at the pipe body connection position exposed outside the pile hole so as to control the pressure in the pipe, and the operation can adopt an inflation pipe with a quick connector to be quickly connected with an annular bag body air nozzle, so that a constructor can conveniently inflate and deflate the bag body at any time;
in the concrete pumping process, the distance from the height of the concrete surface to the lower port of the guide pipe is detected at any time (for example, the height of the concrete surface is calculated by adopting a conventional measuring rope or monitoring fluid densities at different depths), the guide pipe is lifted by a lifter along with the rising of the concrete surface, and the pipe body is recovered section by section; when the joint of two adjacent pipe bodies is lifted to the outside of the pile hole, the joint is unsealed, after the pipe bodies are retracted to the proper position, the joint of the pipe bodies which are unsealed is sealed again according to the pressure in the guide pipe and the flowing speed of concrete, and meanwhile, the concrete conveying pump is controlled to continuously pressurize the concrete surface in the pipe, so that the required pressure is maintained in the guide pipe all the time, and the pipe blockage phenomenon is prevented. The sealing mechanism (annular capsule) at the connecting part of the pipe body exposed outside the pile hole can be partially or completely unsealed according to the condition, so that the pressure is reduced or the pouring is carried out under the condition of no pressure.
The construction method is particularly suitable for concrete pouring construction with small slump.
In the process of recovering (lifting) the guide pipe, the concrete surface in the pile hole is ensured to meet the requirement of the burial depth so as to prevent pile breakage, but the burial depth of the concrete is strictly less than 2 m.
In the step 3) or step 4), when the pumping volume of the concrete is greater than 20% of the designed buried depth volume and the surface of the concrete is not raised, taking into consideration the situations of hole collapse, karst cave and the like in the hole, and preparing materials in time to increase the total filling volume of the pile hole.
5) And continuously pouring until the concrete surface reaches the designed height, withdrawing all the pipe bodies, lifting the guide pipe out of the pile hole, and finishing pouring.
In order to facilitate the site construction, the guide pipe and the pump pipe can be connected in a plugging mode, namely the pump pipe is inserted in the innermost pipe body of the guide pipe and can slide along the axial direction, so that the lowering depth of the guide pipe is enhanced; an annular sac body is arranged between the pump pipe and the innermost pipe body of the guide pipe and serves as a sealing mechanism, the pump pipe and the guide pipe are sealed and locked, and the function of assisting in adjusting the pressure in the pipe is achieved.
The construction platform, the supporting mast and the lifter used in the method, the pipe body depth measurement, the concrete pumping volume detection device and the detection of the concrete surface height can all adopt conventional equipment and a test method.
Finally, it should be noted that: the above embodiments are intended to illustrate rather than limit the technical solution of the present invention, and those skilled in the art should modify the embodiments or substitute part of the technical features without departing from the spirit of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims.
Claims (6)
1. A construction method for filling a concrete pile by using a telescopic guide pipe comprises
Construction preparation: arranging a construction platform at the top of the pile hole, erecting a supporting mast for installing a guide pipe, placing the guide pipe and completing equipment positioning; testing the diameter, depth and sediment thickness of the pile hole;
the method is characterized in that:
the guide pipe adopts a telescopic pipe body structure, and a bottom door which can be controlled to open and close and is used for sealing is arranged at the lower port of the guide pipe; each section of pipe body of the conduit is assembled in a sleeved mode, a sealing mechanism is arranged at the joint of each section of pipe body, the sealing mechanism adopts an annular bag body, the pipe wall contact surfaces of two adjacent pipe bodies are provided with annular clamping grooves, the annular bag body is embedded in the annular clamping grooves, and the joint of each section of pipe body is sealed and locked through the annular bag body;
the construction method also comprises the following construction steps:
1) cleaning the hole:
setting the lowering depth of the guide pipe according to construction requirements; opening a guide pipe bottom door, putting the pipe body section by section to a set depth at the bottom of the pile hole, and sealing the joint of the pipe body, wherein the sealing treatment is finished before the joint of the pipe body enters the pile hole;
the upper end of the guide pipe is connected with a water pump through a pump pipe, high-pressure water is injected through the water pump to carry out hole cleaning operation, the pump pipe is connected with the guide pipe in an inserting mode, and the connection position of the pump pipe and the guide pipe is sealed and locked through an annular bag body; adjusting water pressure and water flow according to the condition of the sediments in the hole, flushing the sediments in the hole bottom retaining wall slurry, stopping water injection after the construction requirement is met, recovering the pipe body section by section and lifting the whole guide pipe out of the pile hole; removing the seal after the pipe body joint is exposed out of the pile hole;
2) and sealing the bottom by initially pouring concrete:
setting the secondary lowering depth of the guide pipe according to construction requirements, closing a bottom door of the guide pipe, lowering the pipe body section by section to a preset depth of the hole bottom, sealing the joint of the pipe body before entering the pile hole, and strictly preventing water or wall protection slurry in the pile hole from permeating into the guide pipe from the joint of the pipe body;
the upper end of the guide pipe is connected with a concrete delivery pump through a pump pipe; setting the volume of the initially poured concrete for bottom sealing according to the requirements of the aperture and the burial depth of the guide pipe, starting a concrete delivery pump to inject the initially poured concrete into the guide pipe, and balancing the pressure inside and outside the pipe through a pipe body connecting part sealing mechanism positioned outside a pile hole to prevent the concrete from being incapable of being pumped due to overlarge pressure inside the pipe;
volume V1 ≧ pi (D-D)/4 XH
In the formula
V1-volume of needed concrete inside the pipe, unit m of thin-wall labor;
d is the diameter of the pile hole in m;
d-catheter diameter, in m;
h is the buried depth of the conduit in the concrete, unit m;
after the volume of the concrete injected into the guide pipe reaches the requirement of the buried depth, opening a bottom door, continuously injecting the concrete into the guide pipe by a concrete delivery pump to apply pressure, and simultaneously adjusting and controlling the pressure in the pipe by a pipe body connecting part sealing mechanism exposed outside a pile hole to enable the concrete to flush the bottom and upwelling along the bottom of the pile hole under the dual actions of self weight and the pressure in the pipe, so that bottom sealing pouring is completed, and the water entering into the pipe is prevented from breaking the pile;
3) and (3) perfusion:
after the concrete upwells to reach the set conduit buried depth position, continuously pumping the concrete for continuous pouring, and controlling and adjusting the pressure in the conduit by utilizing a conduit body connection sealing mechanism outside the pile hole;
in the concrete pumping process, the pipe body is withdrawn section by the lifting guide pipe along with the rising of the concrete surface, the diameter of each section of pipe body of the guide pipe is increased section by section from top to bottom, the guide pipe is sequentially sleeved in the small guide pipe at the upper part when being withdrawn section by section and is uniformly collected to the top of the supporting mast, and the sealing of the joint is removed after the joint of the two sections of pipe bodies is lifted to the outside of the pile hole; after the pipe body retracts, sealing the joint of the pipe body which is released from sealing again according to the pressure in the guide pipe and the flowing speed of the concrete so as to maintain the pressure in the pipe;
the telescopic guide pipe is used for ensuring that the concrete in the hole meets the requirement of the burial depth in the recovery process so as to prevent pile breakage;
4) and continuously pouring until the concrete surface reaches the designed height, withdrawing all the pipe bodies to lift the guide pipe out of the pile hole, and finishing pouring.
2. A construction method for filling a concrete pile with a telescopic guide tube according to claim 1, wherein: the construction preparation equipment positions the verticality of the conduit pipe, and the deviation is less than or equal to +/-0.1 degrees.
3. A construction method for filling a concrete pile with a telescopic guide tube according to claim 1, wherein: the deviation of the lowering depth of the guide pipe in the step 1) is less than or equal to 0.1 m.
4. A construction method for filling a concrete pile with a telescopic guide tube according to claim 1, wherein: and 2) the deviation of the lowering depth of the guide pipe in the step 2) is less than or equal to 0.1 m.
5. A construction method for filling a concrete pile with a telescopic guide tube according to claim 1, wherein: in the step 2) or step 3), in the pouring process, when the concrete pumping volume is greater than 20% of the designed buried depth volume and the surface of the concrete is not raised, the total filling volume of the pile hole at this time needs to be increased in consideration of hole collapse and karst cave in the hole.
6. A construction method for filling a concrete pile with a telescopic guide tube according to claim 1, wherein: and 3) in the lifting process of the pipe body of the guide pipe, the concrete burial depth is strictly less than 2 m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010195869.1A CN111305193B (en) | 2020-03-19 | 2020-03-19 | Construction method for pouring concrete pile by using telescopic guide pipe |
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| CN202010195869.1A CN111305193B (en) | 2020-03-19 | 2020-03-19 | Construction method for pouring concrete pile by using telescopic guide pipe |
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| CN112030975A (en) * | 2020-09-03 | 2020-12-04 | 辽宁工程技术大学 | Automatic telescopic pile foundation pouring guide pipe |
| CN114108632A (en) * | 2021-11-30 | 2022-03-01 | 中铁六局集团有限公司 | Concrete construction method |
| CN114439010A (en) * | 2022-02-15 | 2022-05-06 | 河北爱帕克智能交通器材有限公司 | Hole cleaning and pouring construction process |
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| CN106245628A (en) * | 2016-08-19 | 2016-12-21 | 中铁上海工程局集团有限公司 | A kind of method for filling of corrosion geology large diameter drill hole pile under water |
| CN109555125A (en) * | 2019-01-24 | 2019-04-02 | 张家口众益岩土工程有限公司 | Submersible type concreting sealing telescopic pipe |
| CN110541419A (en) * | 2019-10-10 | 2019-12-06 | 沈阳帝铂智能桩工机械技术研发有限公司 | mechanical construction method and platform for underwater concrete pouring |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245628A (en) * | 2016-08-19 | 2016-12-21 | 中铁上海工程局集团有限公司 | A kind of method for filling of corrosion geology large diameter drill hole pile under water |
| CN109555125A (en) * | 2019-01-24 | 2019-04-02 | 张家口众益岩土工程有限公司 | Submersible type concreting sealing telescopic pipe |
| CN110541419A (en) * | 2019-10-10 | 2019-12-06 | 沈阳帝铂智能桩工机械技术研发有限公司 | mechanical construction method and platform for underwater concrete pouring |
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