CN113174936A - Bottom expanding quality control method for large-diameter socketed pedestal pile - Google Patents

Bottom expanding quality control method for large-diameter socketed pedestal pile Download PDF

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Publication number
CN113174936A
CN113174936A CN202110371600.9A CN202110371600A CN113174936A CN 113174936 A CN113174936 A CN 113174936A CN 202110371600 A CN202110371600 A CN 202110371600A CN 113174936 A CN113174936 A CN 113174936A
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CN
China
Prior art keywords
hole
umbrella
pile
pipe
sleeve pipe
Prior art date
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Pending
Application number
CN202110371600.9A
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Chinese (zh)
Inventor
刘超
姚海
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China MCC17 Group Co Ltd
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China MCC17 Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China MCC17 Group Co Ltd filed Critical China MCC17 Group Co Ltd
Priority to CN202110371600.9A priority Critical patent/CN113174936A/en
Publication of CN113174936A publication Critical patent/CN113174936A/en
Pending legal-status Critical Current

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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
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D33/00—Testing foundations or foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/66—Mould-pipes or other moulds
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork

Abstract

The invention discloses a large-diameter rock-socketed pedestal pile pedestal quality control method, which belongs to the field of pedestal pile detection and comprises a pedestal pile hole drilled, wherein the upper layer of the pedestal pile hole is provided with a stepped hole surface, a middle positioning frame is erected on the stepped hole surface, a hole site plate is installed on the middle positioning frame, an installation hole is formed in the hole site plate, an installation ring is arranged below the installation hole and fixedly connected with the middle positioning frame through a connecting flexible piece, a measuring umbrella is installed below the installation, a sleeve pipe and a vertical pipe are erected in the installation hole, the sleeve pipe is installed after the vertical pipe is installed and sequentially passes through the measuring umbrella, the top end of the vertical pipe is provided with a measuring range, the sleeve pipe is installed outside the vertical pipe, and the outer diameter size of the sleeve pipe is matched with the inner diameter size of the installation hole; the invention aims at the problem that after the diameter of the bottom of the pedestal pile is expanded in the prior art, the aperture can be estimated only through the extension time of a pedestal drill bit or measured through the bottom of a pile hole of an artificial lower pedestal pile, so that the efficiency is low and the danger exists.

Description

Bottom expanding quality control method for large-diameter socketed pedestal pile
Technical Field
The invention belongs to the field of detection of a construction pedestal pile, and particularly relates to a pedestal quality control method of a large-diameter rock-socketed pedestal pile.
Background
The pedestal pile is a cast-in-place pile with the diameter of the bottom larger than that of the pile body at the upper part, and the bearing capacity of a single pile is greatly improved compared with that of a straight pile with the same diameter of the pile body. The method is widely applied in engineering, and in the construction process of the engineering pile foundation, after the construction of the whole engineering pile is completed through the construction control of the links, a core-pulling method is adopted according to relevant regulations to indicate that the thicknesses of the sediments of the pump-tested pile all meet the design requirements, and the success of hole cleaning by a reverse circulation method is indicated. The detection method of the reamed pile after the pile body is detected is mature, but the control method of a construction unit in the hole-forming and bottom-expanding stage can only control through parameters of mechanical drilling to ensure the forming quality after the hole expansion, and the methods of acceptance before concealment and automatic control of the hole expansion are fewer, so that the invention provides the method for controlling the bottom expanding quality of the large-diameter socketed bottom-expanding pile.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention discloses a 'control umbrella' device, which checks the reaming size by controlling the opening size of an umbrella fan, thereby ensuring that the quality of reaming before the hiding of a reaming pile meets the design requirement.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a method for controlling the pedestal reaming quality of a large-diameter socketed pedestal pile, which comprises the following steps:
A1. drilling a pile hole of the club-footed pile, arranging a step hole surface on the upper layer of the pile hole of the club-footed pile, erecting an intermediate positioning frame on the step hole surface, and positioning the center of the intermediate positioning frame on the central axis of the pile hole of the club-footed pile;
A2. a hole site plate is arranged on a central hole of the middle positioning frame, a mounting hole is arranged in the hole site plate, a mounting ring is arranged below the mounting hole, the mounting ring is fixedly connected with the middle positioning frame through a connecting flexible piece, and a measuring umbrella is arranged below the mounting ring;
A3. erecting a sleeve pipe and a vertical pipe in the mounting hole, mounting the vertical pipe, then mounting the sleeve pipe, and sequentially passing through a measuring umbrella, wherein the top end of the vertical pipe is provided with a measuring range, the sleeve pipe is mounted outside the vertical pipe, and the outer diameter size of the sleeve pipe is matched with the inner diameter size of the mounting hole;
an annular plate is arranged on the sleeve pipe, the size of the annular plate is larger than that of the mounting hole, the height H of the vertical pipe is larger than the height H from the middle positioning frame to the bottom surface of the pile hole of the club-footed pile, and the lower end of the vertical pipe is positioned at the lower part of the measuring umbrella;
A4. in the step A3, when the vertical pipe passes through the measuring umbrella, a limiting pipe is arranged below the vertical pipe, the limiting pipe is suitable for limiting the measuring umbrella to fall to the bottom of the pile hole of the club-footed pile, and the sum of the height of the sleeve pipe, the height of the measuring umbrella and the height of the limiting pipe is equal to the height H of the vertical pipe;
A5. in the step A3, when the bottom end of the sleeve pipe does not penetrate through the measuring umbrella, the weighting plate is installed, the installation ring is detached from the measuring umbrella, the measuring umbrella is connected with the weighting plate, and the sleeve pipe is slowly lowered to the height which is flush with the vertical pipe;
A6. slowly descending the sleeve pipe again, enabling the measuring umbrella to be located at the lowest position, enabling the weighting plate to be downwards extruded and connected with the measuring umbrella, enabling the measuring umbrella to be opened to the maximum position, observing and recording the height of the vertical pipe, which is lowered, on the sleeve pipe;
A7. calculating to obtain the bending angle of the measuring umbrella and the bottom diameter of a pile hole of the club-footed pile, and judging whether the quality of the club-footed pile meets the design requirement or not;
A8. lifting the annular plate from the upper end to bring the bottom measuring umbrella closed, reversing the steps A5 to A1 and removing the corresponding device.
Specifically, the height of the middle sleeve and the length of the upper layer framework are measured in advance, the descending height of the upper annular sleeve is obtained according to the height difference of the sleeve pipe relative to the vertical pipe, the height difference of the descending height and the middle sleeve is correspondingly calculated, and the reading of the upper layer included angle can be obtained through a cosine formula, so that the length of the upper layer framework which is propped open is obtained through a sine formula, and the diameter of the pile hole of the club-footed pile is obtained.
Preferably, it includes upper skeleton, lower floor's skeleton, umbrella face and middle sleeve to measure the umbrella, be provided with the annular cover in the middle of the upper skeleton, be provided with down the annular cover in the middle of the lower floor's skeleton, it is located the below of adding the heavy plate to go up the annular cover, it installs on middle sleeve to go up the annular cover, upper skeleton is suitable for and supports the umbrella face, lower floor's skeleton is sheathe in the annular down and is rotated, lower annular cover and middle sleeve fixed connection, the upper end and the upper skeleton of lower floor's skeleton rotate to be connected, middle telescopic diameter is greater than the external diameter of vertical pipe and is less than the internal diameter of sleeve pipe.
Preferably, the sleeve pipe is made of light materials, weight reduction grains are engraved on the surface of the sleeve pipe, the weighting plate is suitable for increasing the weight of the sleeve pipe and extruding the upper annular sleeve, and the upper layer framework and the lower layer framework are made of steel materials.
Preferably, install the slope pole under the aggravating board, the slope pole rotates with the aggravating board to be connected it is provided with the inclined rail to measure umbrella top, installation sliding block in the inclined rail, the sliding block slides on the inclined rail, the bottom and the sliding block of slope pole rotate to be connected.
Preferably, the height of the stepped hole in the step one is limited to 10-20 cm, and a protective sleeve is arranged in the surface of the stepped hole.
Preferably, the top end of the limiting pipe is suitable for being attached to the lower annular sleeve when the measuring umbrella is closed.
Compared with the prior art, the invention can obtain the following technical effects:
according to the invention, after the diameter of the bottom of the club-footed pile is reamed in the prior art, the aperture can be estimated only through the extension time of a club-footed drill bit or the aperture can be measured through artificially descending the bottom of the club-footed pile hole, so that the efficiency is low and the risk exists.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a sectional view in a pile hole of a pedestal pile according to example 1 of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is an enlarged view of portion B of FIG. 1;
fig. 4 is a sectional view in a pile hole of a pedestal pile according to example 2 of the present invention;
fig. 5 is an enlarged view of a portion B of fig. 4.
In the figure: 1. pile holes of the club-footed piles; 2. a stepped bore surface; 3. a middle positioning frame; 4. a central bore; 5. a hole site plate; 6. mounting holes; 7. a mounting ring; 8. a flexible member; 9. measuring an umbrella; 10. a quill tube; 11. a vertical tube; 12. an annular plate; 13. a limiting pipe; 14. a weighting plate; 15. an upper layer framework; 16. a lower layer skeleton; 17. an umbrella cover; 18. an intermediate sleeve; 19. an upper annular sleeve; 20. a lower annular sleeve; 21. an inclined lever; 22. an inclined rail; 23. a slider; 24. and (7) protecting the cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 3, in an embodiment of the present invention, a method for controlling the pedestal quality of a large-diameter socketed pedestal pile includes the following steps:
A1. drilling a club-footed pile hole 1, arranging a stepped hole surface 2 on the upper layer of the club-footed pile hole 1, erecting an intermediate positioning frame 3 on the stepped hole surface 2, and positioning the center of the intermediate positioning frame 3 on the central axis of the club-footed pile hole 1;
A2. a hole site plate 5 is arranged on a central hole 4 of the middle positioning frame 3, a mounting hole 6 is arranged in the hole site plate 5, a mounting ring 7 is arranged below the mounting hole 6, the mounting ring 7 is fixedly connected with the middle positioning frame 3 through a connecting flexible piece 8, and a measuring umbrella 9 is arranged below the mounting;
A3. the sleeve pipe 10 and the vertical pipe 11 are erected in the mounting hole 6, the vertical pipe 11 is firstly installed, then the sleeve pipe 10 is installed and sequentially passes through the measuring umbrella 9, the top end of the vertical pipe 11 is provided with a measuring range, the sleeve pipe 10 is installed outside the vertical pipe 11, and the outer diameter of the sleeve pipe 10 is matched with the inner diameter of the mounting hole 6;
an annular plate 12 is arranged on the sleeve pipe 10, the size of the annular plate 12 is larger than that of the mounting hole 6, the height H of the vertical pipe 11 is larger than the height H from the middle positioning frame 3 to the bottom surface of the pile hole 1 of the club-footed pile, and the lower end of the vertical pipe 11 is positioned at the lower part of the measuring umbrella 9;
A4. in the step A3, when the vertical pipe 11 passes through the measuring umbrella 9, installing a limiting pipe 13 below the vertical pipe 11, wherein the limiting pipe 13 is suitable for limiting the measuring umbrella 9 to descend to the bottom of the club-footed pile hole 1, and the sum of the height of the sleeve pipe 10, the height of the measuring umbrella 9 and the height of the limiting pipe 13 is equal to the height H of the vertical pipe 11;
A5. in the step A3, when the bottom end of the sleeve pipe 10 does not pass through the measuring umbrella 9, the weighting plate 14 is installed, the installation ring 7 is detached from the measuring umbrella 9, the measuring umbrella 9 is connected with the weighting plate 14, and the sleeve pipe 10 is slowly lowered to be level with the vertical pipe 11;
A6. slowly descending the sleeve pipe 10 again, enabling the measuring umbrella 9 to be located at the lowest position, enabling the weighting plate 14 to be downwards pressed and connected with the measuring umbrella 9, enabling the measuring umbrella 9 to be opened to the maximum position, and observing and recording the height of the vertical pipe 11, which is lowered, on the sleeve pipe 10;
A7. calculating to obtain the bending angle of the measuring umbrella 9 and the bottom diameter of the pile hole 1 of the club-footed pile, and judging whether the quality of the club-footed pile meets the design requirement;
A8. lifting the annular plate 12 from the upper end, bringing the lower measuring umbrella 9 closed, reversing the operations a5 to a1 and removing the corresponding device.
Further, measure umbrella 9 and include upper skeleton 15, lower floor's skeleton 16, umbrella face 17 and middle sleeve 18, be provided with annular cover 19 in the middle of upper skeleton 15, be provided with down annular cover 20 in the middle of lower floor's skeleton 16, it is located the below of weighting board 14 to go up annular cover 19, it installs on middle sleeve 18 to go up annular cover 19, upper skeleton 15 is suitable for supporting umbrella face 17, lower floor's skeleton 16 rotates on lower annular cover 20, lower annular cover 20 and middle sleeve 18 fixed connection, the upper end and the upper skeleton 15 of lower floor's skeleton 16 rotate and are connected, middle sleeve 18's diameter is greater than vertical pipe 11's external diameter and is less than the internal diameter of sleeve pipe 10.
Furthermore, the sleeve pipe 10 is made of a light material, weight-reducing lines are engraved on the surface of the sleeve pipe 10, the weighting plate 14 is suitable for increasing the weight of the sleeve pipe 10 to extrude the upper annular sleeve 19, and the upper layer framework 15 and the lower layer framework 16 are made of steel materials.
Further, the step hole height in step one is limited to 20cm, and the casing 24 is installed in the step hole face 2.
Furthermore, the top end of the limiting tube 13 is suitable for being attached to the lower annular sleeve 20 when the measuring umbrella 9 is closed.
Example 2
As shown in fig. 4 and 5, in one embodiment of the present invention, in addition to example 1, there are added: an inclined rod 21 is installed below the weighting plate 14, the inclined rod 21 is rotatably connected with the weighting plate 14, an inclined rail 22 is arranged above the measuring umbrella 9, a sliding block 23 is installed in the inclined rail 22, the sliding block 23 slides on the inclined rail 22, and the bottom end of the inclined rod 21 is rotatably connected with the sliding block 23.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. A bottom expanding quality control method for a large-diameter socketed pedestal pile is characterized by comprising the following steps:
A1. drilling a club-footed pile hole (1), arranging a stepped hole surface (2) on the upper layer of the club-footed pile hole (1), erecting an intermediate positioning frame (3) on the stepped hole surface (2), and positioning the center of the intermediate positioning frame (3) on the central axis of the club-footed pile hole (1);
A2. a hole site plate (5) is arranged on a central hole (4) of the middle positioning frame (3), a mounting hole (6) is arranged in the hole site plate (5), a mounting ring (7) is arranged below the mounting hole (6), the mounting ring (7) is fixedly connected with the middle positioning frame (3) through a connecting flexible piece (8), and a measuring umbrella (9) is arranged below the mounting;
A3. a sleeve pipe (10) and a vertical pipe (11) are erected in the mounting hole (6), the vertical pipe (11) is firstly mounted, then the sleeve pipe (10) is mounted, and the sleeve pipe and the vertical pipe sequentially pass through the measuring umbrella (9), the top end of the vertical pipe (11) is provided with a measuring range, the sleeve pipe (10) is mounted outside the vertical pipe (11), and the outer diameter of the sleeve pipe (10) is matched with the inner diameter of the mounting hole (6);
an annular plate (12) is arranged on the sleeve pipe (10), the size of the annular plate (12) is larger than that of the mounting hole (6), the height H of the vertical pipe (11) is larger than the height H from the middle positioning frame (3) to the bottom surface of the pile hole (1) of the club-footed pile, and the lower end of the vertical pipe (11) is positioned at the lower part of the measuring umbrella (9);
A4. in the step A3, when the vertical pipe (11) penetrates through the measuring umbrella (9), a limiting pipe (13) is installed below the vertical pipe (11), the limiting pipe (13) is suitable for limiting the measuring umbrella (9) to descend to the bottom of the pile hole (1) of the club-footed pile, and the sum of the height of the sleeve pipe (10), the height of the measuring umbrella (9) and the height of the limiting pipe (13) is equal to the height H of the vertical pipe (11);
A5. in the step A3, when the bottom end of the sleeve pipe (10) does not penetrate through the measuring umbrella (9), a weighting plate (14) is installed, the connection between the installation ring (7) and the measuring umbrella (9) is removed, the measuring umbrella (9) is connected with the weighting plate (14), and the sleeve pipe (10) is slowly lowered to the height which is flush with the vertical pipe (11);
A6. slowly descending the sleeve pipe (10) again, enabling the measuring umbrella (9) to be located at the lowest position, enabling the weighting plate (14) to be downwards pressed against the measuring umbrella (9) to enable the measuring umbrella (9) to be opened to the maximum position, and observing and recording the height of the vertical pipe (11) which is lowered on the sleeve pipe (10);
A7. calculating to obtain the bending angle of the measuring umbrella (9) and the bottom diameter of the pile hole (1) of the club-footed pile, and judging whether the quality of the club-footed pile meets the design requirement;
A8. lifting the annular plate (12) from the upper end, bringing the lower measuring umbrella (9) closed, reversing the operations A5 to A1, and removing the corresponding device.
2. The method for controlling the pedestal quality of the large-diameter socketed pedestal pile according to claim 1, characterized in that: measure umbrella (9) and include upper skeleton (15), lower floor's skeleton (16), umbrella face (17) and middle sleeve (18), be provided with annular cover (19) in the middle of upper skeleton (15), be provided with down annular cover (20) in the middle of lower floor's skeleton (16), it is located the below of weighting board (14) to go up annular cover (19), it installs on middle sleeve (18) to go up annular cover (19), upper skeleton (15) are suitable for supporting umbrella face (17), lower floor's skeleton (16) are rotated on annular cover (20) down, annular cover (20) and middle sleeve (18) fixed connection down, the upper end and upper skeleton (15) of lower floor's skeleton (16) are rotated and are connected, the diameter of middle sleeve (18) is greater than the external diameter of vertical pipe (11) and is less than the internal diameter of sleeve pipe (10).
3. The method for controlling the pedestal quality of the large-diameter socketed pedestal pile according to claim 2, characterized in that: the sleeve pipe (10) is made of light materials, weight-reducing grains are carved on the surface of the sleeve pipe (10), the weighting plate (14) is suitable for increasing the weight of the sleeve pipe (10) to extrude the upper annular sleeve (19), and the upper layer framework (15) and the lower layer framework (16) are made of steel materials.
4. The method for controlling the pedestal quality of the large-diameter socketed pedestal pile according to claim 3, characterized in that: install slope pole (21) under weight plate (14), slope pole (21) rotate with weight plate (14) and be connected measure umbrella (9) top and be provided with inclined rail (22), installation sliding block (23) in inclined rail (22), sliding block (23) slide on inclined rail (22), the bottom and the sliding block (23) of slope pole (21) rotate and are connected.
5. The method for controlling the pedestal quality of the large-diameter socketed pedestal pile according to claim 4, characterized in that: the height of the stepped hole in the step one is limited to 10-20 cm, and a protective cylinder (24) is arranged in the stepped hole surface (2).
6. The method for controlling the pedestal quality of the large-diameter socketed pedestal pile according to claim 4, characterized in that: the top end of the limiting pipe (13) is suitable for being attached to the lower annular sleeve (20) when the measuring umbrella (9) is closed.
CN202110371600.9A 2021-04-07 2021-04-07 Bottom expanding quality control method for large-diameter socketed pedestal pile Pending CN113174936A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110371600.9A CN113174936A (en) 2021-04-07 2021-04-07 Bottom expanding quality control method for large-diameter socketed pedestal pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110371600.9A CN113174936A (en) 2021-04-07 2021-04-07 Bottom expanding quality control method for large-diameter socketed pedestal pile

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131967Y (en) * 1992-07-28 1993-05-05 孔清华 Bottom expanding unit for drilled stake hole
CN103410142A (en) * 2013-08-09 2013-11-27 武汉中力岩土工程有限公司 Construction method for cast-in-place pile through punching and base expanding and base expanding device
CN208872221U (en) * 2018-11-28 2019-05-17 中冶建工集团有限公司 Folding stake diameter testing stand
CN210922457U (en) * 2019-11-04 2020-07-03 刘刚 Building engineering manages with stake hole aperture detection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131967Y (en) * 1992-07-28 1993-05-05 孔清华 Bottom expanding unit for drilled stake hole
CN103410142A (en) * 2013-08-09 2013-11-27 武汉中力岩土工程有限公司 Construction method for cast-in-place pile through punching and base expanding and base expanding device
CN208872221U (en) * 2018-11-28 2019-05-17 中冶建工集团有限公司 Folding stake diameter testing stand
CN210922457U (en) * 2019-11-04 2020-07-03 刘刚 Building engineering manages with stake hole aperture detection device

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Application publication date: 20210727

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