Cast-in-place pile sediment measuring device and measuring method

Abstract

The present invention discloses a bored pile sediment measuring device and a measuring method, comprising a conical hammer, a circular measuring plate fixedly disposed horizontally on the top of the conical hammer, a lifting ring fixedly disposed on the top of the circular measuring plate, a measuring rope connected to the lifting ring, an arc-shaped flange at the edge of the circular measuring plate, and a smooth transition between the arc-shaped flange and the upper and lower sides of the circular measuring plate. The bored pile sediment measuring device of the present invention can ensure the overall construction quality of the bored pile, reduce the scratching and jamming with the pile foundation steel cage and the conduit used when the pile foundation is bored, avoid the conical hammer being unable to be pulled out and being damaged, so that the bored pile sediment measuring device of the present application has a high reuse rate, reduces the number of times the sediment measuring device is remade, saves man-hours, saves engineering investment costs, and improves efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bored cast-in-place pile construction, in particular to a cast-in-place pile sediment thickness measuring device and a measuring method thereof. Background Art

[0002] In the prior art, the sediment thickness measuring device and measuring method of the mud cast-in-place pile mainly use a combination of a quasi-cylindrical hammer and a measuring rope to measure the sediment thickness. The measuring method using a quasi-cylindrical hammer welded with steel bars at the construction site has the following problems: (1) The quasi-cylindrical hammer welded with steel bars at the construction site is easy to penetrate into the sediment layer, and the pile foundation depth when the sediment sinks to the bottom is distorted, and the depth value is too large, so that the actual sediment thickness is greater than the measured sediment thickness, which does not meet the allowable sediment thickness requirements of the cast-in-place pile, thereby affecting the overall construction quality of the pile foundation; (2) The quasi-cylindrical hammer welded with steel bars at the construction site is irregular, and the angles between the steel bar edges and welds are obvious. During the sediment measurement process, it is easy to scrape and get stuck with the pile foundation steel cage and the guide tube used in the cast-in-place pile foundation, causing the measuring hammer to be unable to be pulled out and damaged, and it needs to be remade, which wastes work time; (3) The quasi-cylindrical hammer welded with steel bars at the construction site is easy to be damaged, and cannot be reused after being damaged. It is also easy to oxidize and rust, and cannot be used for a long time, which increases the overall cost of the project.

[0003] In summary, the measuring device of the measuring method in the prior art has technical problems such as the cylindrical hammer easily penetrates into the sediment layer, the measuring data is inaccurate, the construction quality is affected, the adjacent conduits are easily scratched, and the measuring device is easily damaged and cannot be used sustainably. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a bored pile sediment measuring device to solve the technical problems that the measuring device of the measuring method in the prior art has a cylindrical hammer that is easy to penetrate the sediment layer, the measurement data is inaccurate, the construction quality is affected, the adjacent conduits are easily scratched, and the device is easily damaged and cannot be used sustainably. Another purpose of the present invention is to provide a measuring method for a bored pile sediment measuring device.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a bored pile sediment measuring device, comprising a conical hammer body, a circular measuring plate is horizontally fixed on the top of the conical hammer body, a lifting ring is fixed on the top of the circular measuring plate, a measuring rope is connected to the lifting ring, the edge of the circular measuring plate is an arc-shaped flange, and the arc-shaped flange smoothly transitions with the top and the bottom of the circular measuring plate at the same time.

[0006] As a preferred solution, the top of the conical hammer body has a connecting shaft extending upward, and the circular measuring plate is provided with a mounting hole for fixing and matching the connecting shaft.

[0007] As a preferred solution, the connecting shaft is a threaded shaft, and the mounting hole is provided with an internal thread matching the threaded shaft.

[0008] As a preferred embodiment, the top edge of the conical hammer body is provided with a circular chamfer, and the arc-shaped flange is hemispherical.

[0009] As a preferred solution, the diameter of the circular chamfer is 5-100 mm.

[0010] As a preferred solution, the material of the lifting ring is a steel pipe.

[0011] As a preferred embodiment, the hanging ring includes a horizontal first end, an upward convex arc-shaped middle portion and an arc-shaped second end in sequence. The first end and the second end are both fixed on the top surface of the circular measuring plate, and the measuring rope is connected to the top of the middle portion.

[0012] As a preferred solution, the measuring rope is provided with a scale.

[0013] As a preferred solution, the bottom of the conical hammer body is spherical.

[0014] A measuring method of a cast-in-place pile sediment measuring device, comprising the steps of:

[0015] S1, subjecting the iron rod to anti-corrosion heat treatment and processing it into a conical hammer body; processing the iron plate into a circle and processing the edge of the iron plate into an arc-shaped flange to form a circular measuring plate; connecting the measuring rope to the lifting ring, the lifting ring is connected to the circular measuring plate, and the circular measuring plate is connected to the conical hammer body;

[0016] S2, after the pile foundation is bored, when the drill residue in the hole is in a suspended state, lower the conical hammer, measure the first pile foundation depth, and take it out;

[0017] S3, after the drill cuttings in the hole sink to the bottom of the pile foundation, lower the conical hammer again, and measure the second pile foundation depth when the conical hammer is lowered to the bottom of the pile foundation;

[0018] S4, the sediment thickness is obtained by subtracting the second pile foundation measurement depth from the first pile foundation depth.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The sediment measuring device for bored piles of the present invention includes a conical hammer, a circular measuring plate is fixedly provided horizontally on the top of the conical hammer, a lifting ring is fixedly provided on the top of the circular measuring plate, and a measuring rope is connected to the lifting ring. The provision of the circular measuring plate can prevent the conical hammer from penetrating into the sediment layer, improve the accuracy of sediment thickness measurement data of the mud method bored piles, and ensure the overall construction quality of the bored piles; the edge of the circular measuring plate is an arc-shaped flange, and the arc-shaped flange smoothly transitions with the top and bottom of the circular measuring plate at the same time. The arc-shaped flange structure makes the circular measuring plate and the conical hammer smooth and without edges and corners, reduces the scratching and jamming with the pile foundation steel cage and the conduit used when pouring the pile foundation, avoids the conical hammer from being unable to be pulled out and being damaged, and makes the reuse rate of the sediment measuring device of the present application high, reduces the number of times the sediment measuring device is remade, saves working hours, saves engineering investment costs, and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the cast-in-place pile sediment measuring device of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of a top view structure;

[0023] Figure 3 It is a structural schematic diagram of the conical hammer body of the bored pile sediment measuring device of the present invention.

[0024] In the figure, 1, conical hammer body; 11, connecting shaft; 12, arc chamfer; 13, spherical; 2, circular measuring plate; 21, mounting hole; 22, arc flange; 3, lifting ring; 31, first end; 32, middle part; 33, second end; 4, measuring rope. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0027] A preferred embodiment of the cast-in-place pile sediment measuring device of the present invention is as follows Figure 1-3 As shown, the sediment measuring device for bored piles of the present invention can be used for measuring sediment thickness of bored piles using mud method, checking and measuring hole depth during pile foundation hole forming, and measuring depth of concrete pouring surface during pile foundation concrete pouring. Specifically, it comprises a conical hammer body 1, a circular measuring plate 2 is horizontally fixedly provided on the top of the conical hammer body 1, a lifting ring 3 is fixedly provided on the top of the circular measuring plate 2, and a measuring rope 4 is connected to the lifting ring 3. The setting of the circular measuring plate 2 can prevent the conical hammer body 1 from penetrating into the sediment layer, thereby improving the accuracy of sediment thickness measurement data of bored piles using mud method and ensuring the overall construction quality of bored piles; the edge of the circular measuring plate 2 is an arc-shaped flange 22, and the arc-shaped flange 22 smoothly transitions with the upper side and the lower side of the circular measuring plate 2 at the same time. The arc-shaped flange 22 structure makes the circular measuring plate 2 and the conical hammer body 1 smooth and without edges and corners, reduces the scratching and jamming with the pile foundation reinforcement cage and the conduit used when pouring the pile foundation, avoids the conical hammer body 1 from being unable to be pulled out and being damaged, and makes the reuse rate of the cast-in-place pile sediment measuring device of the present application high, reduces the number of times the sediment measuring device is remade, saves working hours, saves engineering investment costs, and improves efficiency.

[0028] In the specific connection, the top of the conical hammer body 1 has a connecting shaft 11 extending upward, and the connecting shaft 11 is a threaded shaft with an external thread. The circular measuring plate 2 is provided with a mounting hole 21 for fixing and matching the connecting shaft, and the mounting hole 21 is provided with an internal thread matching the threaded shaft 11. The thread matching installation is adopted to ensure the effective connection between the conical hammer body 1 and the circular measuring plate 2, which is convenient for the installation and removal of the conical hammer and the circular measuring plate 2, and provides the downward sinking gravity for the measurement when the drill residue in the hole is in a suspended state after the pile foundation is formed, and effectively senses the contact surface at the bottom of the pile foundation, which is convenient for reflecting the bottom position of the pile foundation, improving the accuracy of the pile foundation hole depth measurement, and making the conical hammer body 1 replaceable. In other embodiments, the conical hammer body 1 and the circular measuring plate 2 can also be connected by other means such as snap connection.

[0029] Furthermore, the arc-shaped flange 22 is set to be hemispherical, and the hemispherical arc-shaped flange 22 can smoothly transition with the circular measuring plate 2, reducing the possible corners of the conical hammer body 1. At the same time, the edge of the top of the conical hammer body 1 that fits the horizontal circular measuring plate 2 is provided with an arc chamfer 12 to avoid the existence of corners of the conical hammer body 1, thereby further reducing the corners of the measuring device of the present application, and avoiding the conical hammer body 1 from scratching the pile foundation steel cage and the conduit used in the pouring pile foundation during use. In the embodiment of the present application, the diameter of the arc chamfer 12 is 5-10mm.

[0030] Furthermore, the bottom of the conical hammer body 1 is spherical 13 , which can also reduce the corners of the conical hammer body 1 .

[0031] The material of the lifting ring 3 is a steel pipe. Specifically, the lifting ring 3 includes a horizontal first end 31, an upward convex arc-shaped middle part 32 and an arc-shaped second end 33. The first end 31 and the second end 33 are both fixed on the top surface of the circular measuring plate 2. The measuring rope 4 is connected to the top of the middle part 32, providing an effective connection between the sediment measuring device and the lowered measuring rope. The first end 31, the second end 33 and the middle part 32 can be integrally formed or welded and fixed; the shape of the lifting ring 3 can be arc-shaped or arranged in a "J" shape.

[0032] Wherein, a scale is provided on the measuring rope 4 to facilitate the measurement of the sediment thickness.

[0033] The sediment measuring device for bored piles of the present invention comprises a conical hammer 1, a circular measuring plate 2 is fixedly arranged horizontally on the top of the conical hammer 1, a lifting ring 3 is fixedly arranged on the top of the circular measuring plate 2, a measuring rope is connected to the lifting ring 3, and the setting of the circular measuring plate 2 can prevent the conical hammer 1 from penetrating into the sediment layer, improve the accuracy of the sediment thickness measurement data of the mud method bored pile, and ensure the overall construction quality of the bored pile; the edge of the circular measuring plate 2 is an arc-shaped flange 22, and the arc-shaped flange 22 smoothly transitions with the upper surface of the circular measuring plate 2 and the lower surface of the circular measuring plate 2 at the same time. The arc-shaped flange 22 structure makes the circular measuring plate 2 and the conical hammer 1 smooth and without edges and corners, reduces the scraping and jamming with the pile foundation steel cage and the conduit used when the pile foundation is bored, avoids the conical hammer 1 from being unable to be pulled out and damaged, and makes the reuse rate of the sediment measuring device of the present application high, reduces the number of times the sediment measuring device is remade, saves working hours, saves engineering investment costs, and improves efficiency.

[0034] An embodiment of a measuring method of a bored pile sediment measuring device, wherein the bored pile sediment measuring device is the bored pile sediment measuring device in the above embodiment, and the measuring method comprises the steps of:

[0035] S1, subjecting an iron rod to anti-corrosion heat treatment and processing it into a conical hammer body 1; processing an iron plate into a circle and processing the edge of the iron plate into an arc-shaped flange to form a circular measuring plate 2; a measuring rope is provided with a scale, the measuring rope is connected to a lifting ring 3, the lifting ring 3 is connected to the circular measuring plate 2, and the circular measuring plate 2 is connected to the conical hammer body 1;

[0036] S2, after the pile foundation is bored, when the drill residue in the hole is in a suspended state, the conical hammer 1 is lowered to measure the first pile foundation depth and take it out;

[0037] S3, after the drill cuttings in the hole sink to the bottom of the pile foundation, the conical hammer 1 is lowered again, and the second pile foundation depth is measured when the conical hammer 1 is lowered to the bottom of the pile foundation;

[0038] S4, the sediment thickness is obtained by subtracting the second pile foundation measurement depth from the first pile foundation depth.

[0039] The present application uses a calibrated 100-meter measuring rope with an internal steel wire as the lowered measuring rope 4. The measuring rope 4 has a length scale, and the "0" meter end of the measuring rope is connected to the lowering lifting ring to provide a connection with the sediment measuring device when manually measuring the sediment. The depth is measured by reading the readings of the measuring rope 4, and the thickness of the cast-in-place pile sediment is calculated based on the measured data after the measuring rope readings are verified with a calibrated steel ruler, thereby providing a basis for judging whether the thickness of the pile foundation sediment is within the allowable value of the specification.

[0040] The top of the conical hammer body 1 has a connecting shaft 11 extending upward, and the circular measuring plate 2 is provided with a mounting hole 21 for fixing and matching the connecting shaft 11. Specifically, the connecting shaft 22 is a threaded shaft, and the mounting hole 21 is provided with an internal thread matching the threaded shaft 11. The top edge of the conical hammer body 1 is provided with an arc chamfer 12, and the diameter of the arc chamfer 12 is 5-10 mm. The arc flange 22 is hemispherical. The bottom of the conical hammer body 1 is spherical.

[0041] The material of the lifting ring 3 is a steel pipe, and the lifting ring 3 includes a horizontal first end 21, an upward convex arc-shaped middle part 32 and an arc-shaped second end 33 in sequence. The first end 31 and the second end 33 are both fixed on the top surface of the circular measuring plate 2, and the measuring rope is connected to the top of the middle part 32.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for measuring a sedimentation measuring device for a bored pile, characterized in that: The cast-in-place pile sediment measuring device comprises a conical hammer, a circular measuring plate is horizontally fixed on the top of the conical hammer, the bottom of the conical hammer is spherical, a lifting ring is fixed on the top of the circular measuring plate, a measuring rope is connected to the lifting ring, the edge of the circular measuring plate is an arc-shaped flange, and the arc-shaped flange smoothly transitions with the upper side and the lower side of the circular measuring plate at the same time; The measuring method comprises the steps of: S1, subjecting the iron rod to anti-corrosion heat treatment and processing it into a conical hammer body; processing the iron plate into a circle and processing the edge of the iron plate into an arc-shaped flange to form a circular measuring plate; connecting the measuring rope to the lifting ring, the lifting ring is connected to the circular measuring plate, and the circular measuring plate is connected to the conical hammer body; S2, after the pile foundation is bored, when the drill residue in the hole is in a suspended state, lower the conical hammer, measure the first pile foundation depth, and take it out; S3, after the drill cuttings in the hole sink to the bottom of the pile foundation, lower the conical hammer again, and measure the second pile foundation depth when the conical hammer is lowered to the bottom of the pile foundation; S4, the sediment thickness is obtained by subtracting the second pile foundation measurement depth from the first pile foundation depth.

2. The measuring method of the bored pile sediment measuring device according to claim 1, characterized in that: The top of the conical hammer body is provided with a connecting shaft extending upward, and the circular measuring plate is provided with a mounting hole for fixing and matching the connecting shaft.

3. The measuring method of the cast-in-place pile sediment measuring device according to claim 2, characterized in that: The connecting shaft is a threaded shaft, and the mounting hole is provided with an internal thread matching the threaded shaft.

4. The measuring method of the bored pile sediment measuring device according to claim 1, characterized in that: The top edge of the conical hammer body is provided with a circular chamfer, and the arc-shaped flange is hemispherical.

5. The measuring method of the bored pile sediment measuring device according to claim 4, characterized in that: The diameter of the circular chamfer is 5-10 mm.

6. The measuring method of the bored pile sediment measuring device according to claim 1, characterized in that: The material of the lifting ring is steel pipe.

7. The measuring method of the bored pile sediment measuring device according to claim 1, characterized in that: The hanging ring includes a horizontal first end, an upwardly convex arc-shaped middle part and an arc-shaped second end in sequence. The first end and the second end are both fixed on the top surface of the circular measuring plate, and the measuring rope is connected to the top of the middle part.

8. The measuring method of the bored pile sediment measuring device according to claim 1, characterized in that: The measuring rope is provided with a scale.

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