CN210439338U - Bored concrete pile concrete pouring height detection device - Google Patents
Bored concrete pile concrete pouring height detection device Download PDFInfo
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- CN210439338U CN210439338U CN201920436771.3U CN201920436771U CN210439338U CN 210439338 U CN210439338 U CN 210439338U CN 201920436771 U CN201920436771 U CN 201920436771U CN 210439338 U CN210439338 U CN 210439338U
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Abstract
The utility model discloses a device for detecting the concrete pouring height of a bored pile, which comprises an orifice tray, a connecting pipe, a core taking pipe and a plug rod, wherein the center of the orifice tray is provided with an orifice, and two notches are arranged along the diameter of the orifice; the connecting pipe is of a multi-section combined structure, and the upper end head of each section of connecting pipe is provided with a clamping lug which can penetrate through the hole opening and the notch. When the device is used, the orifice tray stretches across a drill hole, connecting pipes are added section by section, the core taking pipe is gradually inserted into the deep part of the drill hole until the core taking pipe penetrates through a mixed layer of slurry and sediment at the top of a cast-in-place pile, then the plug rod slides to the reducing pipe hoop along the connecting pipes, a pipe core of the reducing pipe hoop is plugged, the connecting pipes are lifted section by section and removed until the core taking pipe is lifted out of the drill hole, and then the interface position of a concrete layer and the mixed layer is determined, and the distance between the interface position and an upper port of the reducing pipe hoop plus the length of the connecting pipes is the concrete pouring height of the cast-in-place pile.
Description
Technical Field
The utility model belongs to the technical field of the pile foundation detects, concretely relates to bored concrete pile concrete pouring height detection device.
Background
The cast-in-situ bored pile plays an important role in the aspects of ensuring the structural stability of engineering, ensuring the construction quality of engineering foundation and the like, and the concrete pouring height detection is the most effective measure for improving the cast-in-situ bored pile pouring process and ensuring the pile body quality.
The accuracy of concrete pouring height detection not only directly influences the pile body quality of the cast-in-place pile, but also has great influence on the aspects of construction progress, cost and the like of the project. In terms of pile body quality, a first batch of concrete is flushed out of a guide pipe and mixed with slurry in a hole to form a floating slurry dilution layer with a certain thickness, because the underwater concrete poured by the guide pipe is lifted from bottom to top, when the guide pipe is buried to a certain depth, the subsequently poured concrete flows in the poured concrete, the first poured concrete is always positioned at the uppermost layer, and finally the concrete is solidified into a mixed layer of floating slurry, sludge and the like on the pile top; if the guide pipe is accelerated slowly, the pouring speed is high, more aggregate is easy to deposit at the deep part of the hole body, and the strength of the upper part of the pile body is also easy to be low due to the segregation of concrete in the vibrating process. Therefore, in order to reasonably control the lifting speed of the guide pipe and avoid the occurrence of heavy engineering quality accidents such as pile breakage, weak pile and the like, and meanwhile, in order to ensure that the strength of the pile body at the designed elevation position meets the requirement, a reasonable and effective detection method is implemented on the irrigation height in time; from the construction progress, in order to ensure the quality of a pile body, a construction unit always keeps a certain over-filling amount of a cast-in-place pile, and then chisels off a mixed layer and a poor concrete layer below the mixed layer, so that the cast-in-place pile meeting the quality of the pile body and reaching a designed elevation is obtained, the over-filling height of the cast-in-place pile concrete is generally controlled to be 0.8-1.0 m, but the over-filling height of the cast-in-place pile greatly increases the material cost due to the difference of the casting process, the pile head detection method and the level, and the over-filling amount greatly increases the labor cost and the outward transportation cost of the later-stage pile head breaking, causes the on-site earthwork excavation difficulty and seriously affects the construction progress.
At present, heavy hammer detection methods are mostly adopted for measuring the pile top elevation of a cast-in-situ bored pile, the principle is that a rope ruler connected with an iron rod piece is placed in a drilled hole, the iron rod piece is ensured to reach the bottom of the drilled hole, and the thickness of pile top sediment is obtained by calculating the total length of a rotating rod and subtracting the reading of the rope ruler, so that the over-grouting height of concrete is obtained. Therefore, the concrete pouring height detection device for the cast-in-place bored pile and the use method are provided for solving a series of problems existing in the existing cast-in-place bored pile concrete pouring height detection method and the cast-in-place bored pile in the construction process.
SUMMERY OF THE UTILITY MODEL
Aiming at a series of problems existing in the existing method for detecting the concrete pouring height of the bored pile and the bored pile in the construction process, the device for detecting the concrete pouring height of the bored pile is provided.
The utility model discloses a realize through following technical scheme:
a device for detecting the concrete pouring height of a bored pile comprises an orifice tray (1), a connecting pipe (2), a core taking pipe (3) and a plug rod (4);
an orifice (1-1) is arranged in the center of the orifice tray (1), and two notches (1-2) are arranged along the diameter of the orifice (1-1); the connecting pipe (2) is of a multi-section combined structure, and the upper end head of each section of connecting pipe is provided with a clamping lug (2-1), and the clamping lug can penetrate through the orifice (1-1) and the notch (1-2); the core taking pipe (3) is formed by sequentially connecting a reducing pipe hoop (3-1), a pipe body (3-2) and a pipe head (3-3), and the connecting pipe (2) and the pipe body (3-2) can be connected into a whole through the reducing pipe hoop (3-1).
In the technical scheme, the diameter of the orifice (1-1) of the orifice tray is slightly larger than the outer diameter of the connecting pipe (2).
In the technical scheme, the size of the opening (1-2) of the orifice tray is larger than that of the clamping lug (2-1) of the connecting pipe.
In the technical scheme, the connecting pipe (2) adopts a round steel pipe, the upper end of the connecting pipe (2) is provided with an external thread, the bottom end of the connecting pipe is provided with an internal thread, and the multiple sections of the connecting pipe (2) can be connected through the threads to measure the concrete pouring depth.
In the technical scheme, the clamping lugs (2-1) are welded on two sides of the connecting pipe (2) by adopting 2 reinforcing steel bars with the diameter of 1cm and the length of 10 cm.
In the technical scheme, the plug rod (4) adopts a steel round rod with a pointed lower end, the length of the steel round rod is 15cm, and the plug rod (4) can slide to the reducing pipe hoop (3-1) along the inside of the connecting pipe (2) to plug the connecting pipe.
In the technical scheme, the reducing pipe hoop (3-1) is conical, external threads are arranged on the upper port and the lower port of the reducing pipe hoop, the outer diameter of the upper port is equal to the inner diameter of the connecting pipe (2), and the inner diameter of the upper port is larger than the maximum outer diameter of the plug rod (4); the outer diameter of the lower port of the reducing pipe hoop (3-1) is equal to the inner diameter of the pipe body (3-2), and the inner diameter of the lower port is smaller than the maximum outer diameter of the plug rod (4), so that the plug rod (4) is tightly inserted into the reducing pipe hoop (3-1), and the pipe body (3-2) is isolated from the atmosphere to meet the coring condition.
In the technical scheme, the upper end head and the lower end head of the pipe body (3-2) are provided with built-in threads; the length of the tube body is 1.0-1.5 m.
In the technical scheme, the pipe head (3-3) is provided with a cutting edge with the length of 2cm so as to reduce the resistance of the whole structure in the downward moving process.
In the technical scheme, the orifice tray (1) is a steel rectangular base plate, the length of the orifice tray is usually 2 times of the diameter of a drilled hole, and the rigidity and the thickness of the orifice tray are based on the weight of the coring pipe (3) and the N sections of connecting pipes (2).
In the technical scheme, the tube body (3-2) of the core taking tube is made of metal.
The concrete pouring height detection device for the bored pile comprises the following specific use method:
① confirming the concrete depth of the drill hole to the construction unit, determining and preparing the number of the required connecting pipes (2) in advance;
② assembling the reducing pipe hoop (3-1), the pipe body (3-2) and the pipe head (3-3) into the core extracting pipe (3) on the construction site;
③, the first section of connecting pipe (2) is in threaded connection with the reducing pipe hoop (3-1) of the coring pipe, the clamping lug (2-1) section of the connecting pipe (2) passes through the orifice (1-1) along the opening (1-2), the connecting pipe (2) is rotated to make the clamping lug (2-1) staggered with the opening (1-2), so that the first section of connecting pipe (2) connected with the coring pipe (3) is suspended on the orifice tray (1), then the orifice tray (1) is spanned on the drill hole, and the connecting pipe (2) and the coring pipe (3) are positioned in the drill hole;
④, adding connecting pipes (2) section by section, inserting the core taking pipe (3) into the deep of the drill hole step by step until the core taking pipe (3) passes through the mixed layer of the slurry and the sediment at the top of the cast-in-place pile, judging whether the core taking pipe passes through the mixed layer of the slurry and the sediment according to the change of the resistance of the core taking pipe (3);
⑤ the plug rod (4) is inserted into the connecting pipe (2), the plug rod (4) slides down to the reducing pipe hoop (3-1) under the action of self gravity and plugs the pipe core of the reducing pipe hoop, at this time, the inside of the coring pipe (3) is isolated from the atmosphere, and the concrete is subjected to siphon force in the pipe, so that the concrete does not flow out of the coring pipe (3) in the upward moving process;
⑥ lifting up and removing the connecting pipe (2) section by section until the core extracting pipe (3) is lifted out of the borehole;
⑦ the plug rod (4) is taken out from the reducing pipe hoop (3-1), the substance in the core-taking pipe (3) is poured out, the interface position of the concrete layer and the mixed layer can be found visually, then the length of the connecting pipe (2) is measured, and the distance between the interface position and the upper port of the reducing pipe hoop plus the length of the connecting pipe (2) is the pouring height of the cast-in-place pile concrete.
In the technical scheme, the tube body (3-2) of the core taking tube can also be made of transparent materials. The concrete application method of the device for detecting the cast-in-place concrete height of the bored pile comprises the following steps:
① confirming the concrete depth of the drill hole to the construction unit, determining and preparing the number of the required connecting pipes (2) in advance;
② assembling the reducing pipe hoop (3-1), the pipe body (3-2) and the pipe head (3-3) into the core extracting pipe (3) on the construction site;
③, the first section of connecting pipe (2) is in threaded connection with the reducing pipe hoop (3-1) of the coring pipe, the clamping lug (2-1) section of the connecting pipe (2) passes through the orifice (1-1) along the opening (1-2), the connecting pipe (2) is rotated to make the clamping lug (2-1) staggered with the opening (1-2), so that the first section of connecting pipe (2) connected with the coring pipe (3) is suspended on the orifice tray (1), then the orifice tray (1) is spanned on the drill hole, and the connecting pipe (2) and the coring pipe (3) are positioned in the drill hole;
④, adding connecting pipes (2) section by section, inserting the core taking pipe (3) into the deep of the drill hole step by step until the core taking pipe (3) passes through the mixed layer of the slurry and the sediment at the top of the cast-in-place pile, judging whether the core taking pipe passes through the mixed layer of the slurry and the sediment according to the change of the resistance of the core taking pipe (3);
⑤ the plug rod (4) is inserted into the connecting pipe (2), the plug rod (4) slides down to the reducing pipe hoop (3-1) under the action of self gravity and plugs the pipe core of the reducing pipe hoop, at this time, the inside of the coring pipe (3) is isolated from the atmosphere, and the concrete is subjected to siphon force in the pipe, so that the concrete does not flow out of the coring pipe (3) in the upward moving process;
⑥ lifting up and removing the connecting pipe (2) section by section until the core extracting pipe (3) is lifted out of the borehole;
⑦ cleaning the outer wall of the pipe body (3-2), observing and finding the interface position of the concrete layer and the mixed layer, then measuring the length of the connecting pipe (2), wherein the distance between the interface position and the upper port of the reducing pipe hoop plus the length of the connecting pipe (2) is the pouring height of the cast-in-place pile concrete.
The utility model has the advantages that: the utility model discloses combined the structure of probing coring device and siphon's theory of operation, concrete and sediment in can taking out the drilling fast, thereby the height of concrete layer and miscellaneous layer is observed out to the accuracy, thereby the speed of lifting and the super height of irritating of concrete of effectual control slip casting pipe, not only very big improvement pile body quality, heavy engineering quality accidents such as "disconnected stake", "weak stake" have been avoided the bored concrete pile to appear, avoid simultaneously because of the bored concrete pile surpasses the chisel pile head that highly too big arouses of irritating, the emergence of influence site operation situation such as clearance place, construction progress has greatly been improved, personnel have been reduced simultaneously, the input cost of material.
Drawings
Fig. 1 is a schematic view of the space combination structure of the present invention.
Fig. 2 is a schematic diagram of the space explosion structure of the present invention.
FIG. 3 is a plot of the distribution of material within a borehole as concrete is poured into the borehole.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical field person understand the solution of the present invention better, the technical solution of the present invention is further described below with reference to the specific embodiments.
Example one
As shown in fig. 1 and 2, a device for detecting the concrete pouring height of a bored pile comprises an orifice tray (1), a connecting pipe (2), a core taking pipe (3) and a plug rod (4).
An orifice (1-1) is arranged in the center of the orifice tray (1), and two notches (1-2) are arranged along the diameter of the orifice (1-1); the connecting pipe (2) is of a multi-section combined structure, and the upper end head of each section of connecting pipe is provided with a clamping lug (2-1); the core taking pipe (3) is formed by sequentially connecting a reducing pipe hoop (3-1), a pipe body (3-2) and a pipe head (3-3), and the connecting pipe (2) and the pipe body (3-2) are connected into a whole by the reducing pipe hoop (3-1).
Assembling the reducing pipe hoop (3-1), the pipe body (3-2) and the pipe head (3-3) into a core taking pipe (3); connecting the first section of connecting pipe (2) with the reducing pipe hoop (3-1) in a threaded manner, and simultaneously enabling the orifice tray (1) to cross the drilled hole; a clamping lug (2-1) of the connecting pipe (2) penetrates through the orifice (1-1) along the opening (1-2), the clamping lug (2-1) of the rotating connecting pipe (2) is staggered with the opening (1-2), and the first section of the connecting pipe (2) connected with the core taking pipe (3) is connected with the orifice tray (1) and then suspended in a drill hole; the connecting pipes (2) are added section by section according to the depth of the drilled hole until the core taking pipe (3) penetrates through a mixed layer of slurry and sediment at the top of the cast-in-place pile; the plug rod (4) is inserted into the connecting pipe (2), the pipe core is blocked after the plug rod (4) slides to the reducing pipe hoop (3-1), at the moment, the interior of the core taking pipe (3) is isolated from the atmosphere, and concrete does not flow out due to siphon suction in the pipe; lifting up and detaching the connecting pipe (2) section by section until the core taking pipe (3) is lifted out of the drill hole; and (3) pulling the plug rod (4) out of the reducing pipe hoop (3-1), obliquely pouring out the concrete in the core taking pipe (3), recording the interface position of the concrete layer and the mixed layer, measuring the length of the connecting pipe (2), and adding to obtain the pouring height of the cast-in-place pile concrete.
Furthermore, the diameter of the orifice (1-1) of the orifice tray is slightly larger than the outer diameter of the connecting pipe (2).
Furthermore, the size of the gap (1-2) of the orifice tray is slightly larger than the size of the clamping lug (2-1) of the connecting pipe.
Further, take over (2) for adopting the external diameter to be 24mm, thickness is 2 mm's galvanized round steel pipe, take over (2) upper end and set up the external screw thread that length is 5cm, the bottom sets up the internal thread that length is 5cm, and multistage takeover (2) accessible threaded connection to reach and survey the concrete depth of filling.
Furthermore, the clamping lugs (2-1) are welded on two sides of the connecting pipe (2) by adopting 2 reinforcing steel bars with the diameter of 1cm and the length of 10 cm.
Furthermore, the reducing pipe hoop (3-1) is conical, external threads are arranged at the upper port and the lower port of the reducing pipe hoop, the outer diameter of the upper port is equal to the inner diameter of the connecting pipe (2), and the inner diameter of the upper port is larger than the maximum outer diameter of the plug rod (4); the outer diameter of the lower port of the reducing pipe hoop (3-1) is equal to the inner diameter of the pipe body (3-2), and the inner diameter of the lower port is smaller than the maximum outer diameter of the plug rod (4), so that the plug rod (4) is tightly inserted into the reducing pipe hoop (3-1), and the pipe body (3-2) is isolated from the atmosphere to meet the coring condition.
Further, the pipe body (3-2) is made of an equal-diameter steel pipe with the outer diameter of 10cm and the thickness of 5mm, and built-in threads are arranged at the upper end head and the lower end head of the pipe body (3-2); the length of the tube body is 1.0-1.5 m.
Furthermore, the pipe head (3-3) is a steel pipe with the length of 10cm, the outer diameter of 10cm and the thickness of 5mm, and the pipe head (3-3) is provided with a cutting edge with the length of 2cm so as to reduce the resistance of the whole structure in the downward moving process.
Furthermore, the plug rod (4) adopts a steel round rod with a pointed lower end, the length of the steel round rod is 15cm, and the plug rod (4) can slide to the reducing pipe hoop (3-1) along the inside of the connecting pipe (2) to plug the connecting pipe.
The concrete application method of the device for detecting the cast-in-place concrete height of the bored pile comprises the following steps:
① confirming the concrete depth of the drill hole to the construction unit, determining and preparing the number of the required connecting pipes (2) in advance;
② assembling the reducing pipe hoop (3-1), the pipe body (3-2) and the pipe head (3-3) into the core extracting pipe (3) on the construction site;
③, the first section of connecting pipe (2) is in threaded connection with the reducing pipe hoop (3-1) of the coring pipe, the clamping lug (2-1) section of the connecting pipe (2) passes through the orifice (1-1) along the opening (1-2), the connecting pipe (2) is rotated to make the clamping lug (2-1) staggered with the opening (1-2), so that the first section of connecting pipe (2) connected with the coring pipe (3) is suspended on the orifice tray (1), then the orifice tray (1) is spanned on the drill hole, and the connecting pipe (2) and the coring pipe (3) are positioned in the drill hole;
④, adding connecting pipes (2) section by section, inserting the core taking pipe (3) into the deep of the drill hole step by section until the core taking pipe (3) passes through the mixed layer of the slurry and the sediment at the top of the cast-in-place pile, further, judging whether the core taking pipe passes through the mixed layer of the slurry and the sediment through the change of the resistance of the core taking pipe (3), wherein in the process of inserting the core taking pipe (3) into the drill hole step by step, the core taking pipe (3) firstly passes through the slurry a, then passes through the mixed layer b of the slurry and the sediment, and finally enters the concrete layer c, the slurry a has the minimum resistance to the core taking pipe, when the core taking pipe is inserted into the mixed layer b of the slurry and the sediment, the resistance is greatly increased, when the core taking pipe is inserted into the concrete layer c, the resistance is further greatly increased, therefore, a constructor can judge the insertion position of the core taking pipe (3) according to the change of the resistance.
⑤ the plug rod (4) is inserted into the connecting pipe (2), the plug rod (4) slides down to the reducing pipe hoop (3-1) under the action of self gravity and plugs the pipe core of the reducing pipe hoop, at this time, the inside of the coring pipe (3) is isolated from the atmosphere, and the concrete is subjected to siphon force in the pipe, so that the concrete does not flow out of the coring pipe (3) in the upward moving process;
⑥ lifting up and removing the connecting pipe (2) section by section until the core extracting pipe (3) is lifted out of the borehole;
⑦ the plug rod (4) is taken out from the reducing pipe hoop (3-1), the substance in the core-taking pipe (3) is poured out, the interface position of the concrete layer and the mixed layer can be found visually (the concrete has good conglomeration property, the poured substance basically keeps cylindrical and can not break, so the interface position of the concrete layer and the mixed layer can be found visually), then the length of the connecting pipe (2) is measured, the distance from the interface position to the upper port of the reducing pipe hoop and the length of the connecting pipe (2) are the pouring height of the pouring pile concrete (namely the distance from the top of the pouring pile concrete to the hole opening of the drill hole).
Example two
The difference between the present embodiment and the first embodiment is that the pipe body (3-2) of the coring pipe may be made of a transparent material, such as glass or transparent plastic, so that in step ⑦, the interface position between the concrete layer and the miscellaneous layer can be directly observed by cleaning the outer wall of the pipe body (3-2) without pouring out the material in the coring pipe (3), and the pouring height of the cast-in-place pile concrete can be measured.
EXAMPLE III
Furthermore, the orifice tray (1) is a steel rectangular cushion plate, the length of the orifice tray is usually 2 times of the diameter of a drilled hole, and the rigidity and the thickness of the orifice tray are based on the weight of the coring pipe (3) and the N sections of connecting pipes (2).
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (10)
1. The utility model provides a high detection device of bored concrete pile concrete pouring which characterized in that: comprises an orifice tray (1), a connecting pipe (2), a core taking pipe (3) and a plug rod (4);
an orifice (1-1) is arranged in the center of the orifice tray (1), and two notches (1-2) are arranged along the diameter of the orifice (1-1); the connecting pipe (2) is of a multi-section combined structure, and the upper end head of each section of connecting pipe is provided with a clamping lug (2-1), and the clamping lug can penetrate through the orifice (1-1) and the notch (1-2); the core taking pipe (3) is formed by sequentially connecting a reducing pipe hoop (3-1), a pipe body (3-2) and a pipe head (3-3), and the connecting pipe (2) and the pipe body (3-2) can be connected into a whole through the reducing pipe hoop (3-1).
2. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the connecting pipe (2) is a round steel pipe, the upper end of the connecting pipe (2) is provided with external threads, the bottom end of the connecting pipe is provided with internal threads, and the multiple sections of the connecting pipe (2) can be connected through the threads to measure the concrete pouring depth.
3. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the plug rod (4) adopts a steel round rod with a pointed lower end, and the plug rod (4) can slide to the reducing pipe hoop (3-1) along the inside of the connecting pipe (2) to plug the connecting pipe.
4. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the reducing pipe hoop (3-1) is conical, external threads are arranged on the upper port and the lower port of the reducing pipe hoop, the outer diameter of the upper port is equal to the inner diameter of the connecting pipe (2), and the inner diameter of the upper port is larger than the maximum outer diameter of the plug rod (4); the outer diameter of the lower port of the reducing pipe hoop (3-1) is equal to the inner diameter of the pipe body (3-2), and the inner diameter of the lower port is smaller than the maximum outer diameter of the plug rod (4), so that the plug rod (4) is tightly inserted into the reducing pipe hoop (3-1), and the pipe body (3-2) is isolated from the atmosphere to meet the coring condition.
5. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the upper end and the lower end of the pipe body (3-2) are provided with built-in threads.
6. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the length of the tube body (3-2) is 1.0-1.5 m.
7. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the pipe head (3-3) is provided with a cutting edge with the length of 2cm so as to reduce the resistance of the whole structure in the downward moving process.
8. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the orifice pallet (1) is a steel rectangular pad, typically 2 times the drill diameter in length.
9. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the tube body (3-2) of the core taking tube is made of transparent material.
10. The device for detecting the concrete pouring height of the bored pile according to claim 1, wherein: the tube body (3-2) of the core taking tube is made of metal.
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| CN201920436771.3U CN210439338U (en) | 2019-04-02 | 2019-04-02 | Bored concrete pile concrete pouring height detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109989434A (en) * | 2019-04-02 | 2019-07-09 | 中交天津港湾工程研究院有限公司 | Cast-in-situ bored pile concrete casting height detecting device and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109989434A (en) * | 2019-04-02 | 2019-07-09 | 中交天津港湾工程研究院有限公司 | Cast-in-situ bored pile concrete casting height detecting device and application method |
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