Device for measuring thickness of sediment of cast-in-place bored pile

Abstract

The utility model provides a bored pile sediment thickness measuring device, including tripod, winch, support plate and probe subassembly, tripod supports on the ground of the location of the circumference of drilling, winch is fixed on the inner top of tripod, the middle part of support plate upper end is fixed with the outer end part of the cable in winch, support plate is used for supporting on the sediment of the location of drilling bottom, the edge of support plate is provided with the threaded hole in vertical direction, probe subassembly is worn in threaded hole and is connected with threaded hole screw thread, the lower end of probe subassembly is used for penetrating sediment and reaches the bottom of drilling, the utility model discloses can realize to the thickness of the sediment in drilling is measured.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering technology, and more specifically, to a device for measuring the thickness of sediment in bored piles. Background Technology

[0002] Drilled piles have the advantages of wide applicability, high single pile bearing capacity, low construction noise, low vibration and low unit price. They have been widely used in various construction projects such as bridges, municipal works and highways. Therefore, the construction quality control of piles is particularly important. During construction, due to the influence of construction technology and site environment, rock and soil debris that has been cut or impacted and collapsed, along with mud, mix together and settle at the bottom of the hole. When encountering a thick sand layer, there is also a layer of sediment at the bottom of the hole. Even after cleaning the hole through forward and reverse circulation, these sediments at the bottom of the hole cannot be completely removed, and the remaining material at the bottom of the hole is called sediment. The thickness of sediment at the bottom of the cast-in-place pile is one of the important indicators of the quality of hole formation. Excessive sediment can lead to insufficient bearing capacity of the pile, which is particularly evident for end-bearing cast-in-place piles. Therefore, strengthening the control and detection of sediment thickness at the bottom of the pile during construction is one of the key measures to ensure the construction quality of bored cast-in-place piles. However, there is currently a lack of a device on the market that can measure the thickness of sediment. The purpose of this application is to provide a device that can measure the thickness of sediment located in the borehole. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for measuring the thickness of sediment in bored piles, which can measure the thickness of sediment in the borehole.

[0004] This utility model provides a device for measuring the thickness of sediment in bored piles, including a tripod, a winch, a support plate, and a probe assembly. The tripod is supported on the ground around the borehole, the winch is fixed to the inner top of the tripod, the middle of the upper part of the support plate is fixed to the outer end of the steel cable in the winch, the support plate is used to support the sediment at the bottom of the borehole, and a threaded hole is vertically provided at the edge of the support plate. The probe assembly is inserted into the threaded hole and threadedly connected to the threaded hole. The lower end of the probe assembly is used to penetrate the sediment and reach the bottom of the borehole.

[0005] By adopting the above-described structure, this invention enables the measurement of the thickness of sediment in boreholes, thus overcoming the deficiency of existing technologies that cannot measure the thickness of sediment.

[0006] In one possible implementation, a connecting hole is vertically provided in the middle of the support plate, and a lifting ring is threaded onto the connecting hole. The lifting ring is fixed to the outer end of the steel cable. With this structure, the middle of the upper part of the support plate can be reliably fixed to the outer end of the steel cable under the action of the lifting ring.

[0007] In one possible implementation, a ring-shaped counterweight is coaxially welded to the upper end of the support plate; the counterweight allows the support plate to reliably abut against the sediment, and when the probe assembly is twisted to move it downward, the support plate can reliably apply downward pressure to the probe assembly to avoid the reaction force of the probe assembly causing the support plate to tilt.

[0008] In one possible implementation, the lower end of the probe assembly is formed into an inverted conical structure; by adopting this structure, when the probe assembly is twisted to move it downward, the resistance between the lower end of the probe assembly and the sediment can be reduced, so that the probe assembly can penetrate the sediment and reach the bottom of the borehole.

[0009] In one possible implementation, the outer wall of the probe assembly is provided with a plurality of annular grooves spaced apart along the axial direction of the probe assembly. The inner sidewall of each annular groove is formed into a regular hexagonal structure. The annular groove is used to cooperate with a wrench so that the wrench can rotate the probe assembly. With this structure, the construction personnel can turn the probe by cooperating with the annular groove with the wrench. In the process of turning the probe to move the probe, the wrench can be engaged in the annular groove at different positions to continuously turn the probe.

[0010] In one possible implementation, the probe assembly includes several probe bodies connected end-to-end in sequence. Each probe body has a blind hole coaxially arranged at its upper end. Except for the lowermost probe body, each probe body has a screw coaxially arranged at its lower end. Each screw is threaded into the blind hole at a corresponding position. The threaded connection direction of the screw and the blind hole is the same as the threaded connection direction of the probe assembly and the threaded hole. An inverted conical structure is provided at the lower end of the lowermost probe body. With this structure, when the length of the probe assembly is insufficient, probe bodies can be continuously added to the upper end of the probe assembly to make the length of the probe assembly meet the usage requirements. In addition, after the probe assembly is used, it can be disassembled for easy storage. Attached Figure Description

[0011] Figure 1 This is a partial cross-sectional structural diagram of the present invention; Figure 2 for Figure 1 A magnified structural diagram of point A in the middle. Detailed Implementation

[0012] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0013] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0014] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0015] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] See Figure 1-2 As shown in the embodiment of this application, a device for measuring the thickness of sediment in bored piles is disclosed, including a tripod 1, a winch 2, a support plate 3, and a probe assembly 4. The tripod 1 is supported on the ground around the borehole 5. The winch 2 is fixed on the inner top of the tripod 1. The middle part of the upper end of the support plate 3 is fixed to the outer end of the steel cable 21 in the winch 2. The support plate 3 is used to support the sediment 6 located at the bottom of the borehole 5. A threaded hole 31 is vertically provided at the edge of the support plate 3. The probe assembly 4 passes through the threaded hole 31 and is threadedly connected to the threaded hole 31. The lower end of the probe assembly 4 is used to penetrate the sediment 6 and reach the bottom of the borehole 5.

[0017] A connecting hole 32 is vertically provided in the middle of the support plate 3, and a lifting ring 7 is threaded onto the connecting hole 32. The lifting ring 7 is fixed to the outer end of the steel cable 21. With this structure, the middle part of the upper end of the support plate can be reliably fixed to the outer end of the steel cable under the action of the lifting ring.

[0018] A ring-shaped counterweight 33 is coaxially welded to the upper end of the support plate 3. The counterweight allows the support plate to reliably abut against the sediment, and when the probe assembly is twisted to move it downward, the support plate can reliably apply downward pressure to the probe assembly to avoid the reaction force of the probe assembly causing the support plate to tilt.

[0019] The lower end of the probe assembly 4 forms an inverted conical structure. By adopting this structure, when the probe assembly is twisted to move it downward, the resistance between the lower end of the probe assembly and the sediment can be reduced, so that the probe assembly can penetrate the sediment and reach the bottom of the borehole.

[0020] The outer wall of the probe assembly 4 is provided with several annular grooves 41 that are spaced apart along the axial direction of the probe assembly 4. The inner sidewall of each annular groove 41 is formed into a regular hexagonal structure. The annular groove 41 is used to cooperate with a wrench so that the wrench can rotate the probe assembly 4. With this structure, the construction personnel can turn the probe by cooperating with the annular groove with the wrench. In the process of turning the probe to move the probe, the wrench can be engaged in the annular groove at different positions to continuously turn the probe.

[0021] The probe assembly 4 includes several probe bodies 42 connected end to end in sequence. Each probe body 42 has a blind hole 421 coaxially arranged at its upper end. Except for the probe body 42 located at the bottommost point, each probe body 42 has a screw 422 coaxially arranged at its lower end. Each screw 422 is threaded into the blind hole 421 at the corresponding position. The threaded connection direction of the screw 422 and the blind hole 421 is the same as the threaded connection direction of the probe assembly 4 and the threaded hole 31. An inverted conical structure is provided at the lower end of the probe assembly 4, located at the bottommost probe body 42. With this structure, when the length of the probe assembly is insufficient, probe bodies can be continuously added to the upper end of the probe assembly to make the length of the probe assembly meet the usage requirements. In addition, after the probe assembly is used, it can be disassembled for easy storage.

[0022] When using this invention, first, a tripod is set up on the ground around the borehole. Then, a winch is controlled to move the support plate downwards into the borehole. During the downward movement of the support plate, the construction workers continuously connect the probe body end to end. After the support plate abuts against the sediment, the winch is turned off. Then, the construction workers use a wrench to turn the probe assembly downwards relative to the support plate until the lower end of the probe assembly reaches the bottom of the borehole. Then, the winch moves the support plate upwards. During the upward movement of the support plate, the excess probe body located above the support plate is continuously removed. After the support plate and probe assembly are completely removed from the borehole, the thickness of the sediment can be obtained by measuring the length of the probe assembly located below the support plate.

[0023] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A device for measuring the thickness of sediment in bored piles, characterized in that: The device includes a tripod (1), a winch (2), a support plate (3), and a probe assembly (4). The tripod (1) is supported on the ground around the borehole (5). The winch (2) is fixed on the inner top of the tripod (1). The middle part of the upper end of the support plate (3) is fixed to the outer end of the steel cable (21) in the winch (2). The support plate (3) is used to support the sediment (6) at the bottom of the borehole (5). A threaded hole (31) is vertically provided at the edge of the support plate (3). The probe assembly (4) passes through the threaded hole (31) and is threadedly connected to the threaded hole (31). The lower end of the probe assembly (4) is used to penetrate the sediment (6) and reach the bottom of the borehole (5).

2. The device for measuring the thickness of sediment in bored piles according to claim 1, characterized in that: The support plate (3) has a vertically arranged connecting hole (32) in the middle, and a lifting ring (7) is threaded onto the connecting hole (32). The lifting ring (7) is fixed to the outer end of the steel cable (21).

3. The device for measuring the thickness of sediment in bored piles according to claim 1, characterized in that: The upper end of the support plate (3) is coaxially welded with a ring-shaped counterweight (33).

4. The device for measuring the thickness of sediment in bored piles according to any one of claims 1-3, characterized in that: The lower end of the probe assembly (4) forms an inverted conical structure.

5. The device for measuring the thickness of sediment in bored piles according to claim 4, characterized in that: The outer wall of the probe assembly (4) is provided with a plurality of annular grooves (41) spaced apart along the axial direction of the probe assembly (4). The inner sidewall of each annular groove (41) forms a regular hexagonal structure. The annular groove (41) is used to cooperate with a wrench so that the wrench can rotate the probe assembly (4).

6. The device for measuring the thickness of sediment in bored piles according to claim 5, characterized in that: The probe assembly (4) includes several probe bodies (42) connected end to end in sequence. Each probe body (42) has a blind hole (421) coaxially arranged at its upper end. Except for the probe body (42) located at the bottom, each probe body (42) has a screw (422) coaxially arranged at its lower end. Each screw (422) is threaded into the blind hole (421) at the corresponding position. The threaded connection direction of the screw (422) and the blind hole (421) is the same as the threaded connection direction of the probe assembly (4) and the threaded hole (31). The inverted conical structure located at the lower end of the probe assembly (4) is arranged on the lower end of the probe body (42) located at the bottom.

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