Underwater concrete over-pouring pile head control device for cast-in-situ bored pile

Abstract

The utility model relates to the technical field of cast-in-place concrete pile construction equipment, in particular to a cast-in-place bored pile underwater concrete over-pouring pile head control device which comprises an outer pipe sampler and an inner pipe sampler, the inner pipe sampler is coaxially and rotatably arranged in the outer pipe sampler, a sampling opening is formed in the end of the outer pipe sampler, and a sampling pipe is arranged in the sampling opening. A sampling cavity is formed in the end part of the inner pipe sampler, and after the inner pipe sampler rotates to a certain angle, the sampling opening is communicated with the sampling cavity; the sampling cavity is used for sampling concrete in a pile hole; the outer pipe sampler and the inner pipe sampler are arranged, the structure is simple, operation is convenient and fast, concrete sampling can be achieved through rotation of the inner pipe sampler in the outer pipe sampler, the height, exceeding a cast-in-situ bored pile head, of the cast-in-situ bored pile is conveniently and accurately controlled, and therefore concrete waste is reduced, construction materials are saved, and the construction cost is reduced. And meanwhile, the labor cost for subsequent chiseling of the over-grouting pile head can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of construction equipment for cast-in-place concrete piles, and particularly relates to a control device for underwater concrete over-pouring pile heads of bored cast-in-place piles. Background Art

[0002] During the construction of underwater cast-in-place concrete piles, first, concrete is initially poured into the pile hole. Under the action of a certain drop pressure, the concrete enters below the initially poured concrete through a sealed and connected conduit, pushing up the initially poured concrete and the slurry above it step by step to form a continuous and dense concrete pile body. After the concrete is poured to the design elevation, over-pouring is still required so that the position where the concrete contacts the slurry is higher than the height of the pile head of the cast-in-place pile. After the concrete solidifies and forms, the over-poured pile head of the cast-in-place pile is chiseled off to prevent the contact between the concrete and the slurry from reducing the structural strength of the cast-in-place pile. However, since the slurry floats above the concrete, it is difficult to judge the actual pouring height of the concrete surface of the pile head of the cast-in-place pile.

[0003] In the prior art, construction workers usually use bamboo poles, wooden poles or other tools to insert into the pile hole for probing, and judge the actual height of the pile head according to the descending depth of the bamboo pole and the contact position between the bamboo pole and the concrete. Such a measurement method has high requirements for the experience of construction workers. At the same time, it is easily interfered by human factors during measurement, and it is difficult to ensure the measurement accuracy. At the same time, such a measurement method cannot judge whether the over-pouring height is within a suitable range, and it is easy to cause the phenomenon of excessive concrete pouring and too long over-poured pile head length during over-pouring, resulting in great waste of construction materials and increasing the labor cost of subsequent chiseling of the over-poured pile head. Summary of the Utility Model

[0004] In view of the above problems, this application provides a control device for underwater concrete over-pouring pile heads of bored cast-in-place piles.

[0005] The control device for underwater concrete over-pouring pile heads of bored cast-in-place piles provided by this application adopts the following technical solutions:

[0006] A control device for underwater concrete over-pouring pile heads of bored cast-in-place piles includes an outer tube sampler and an inner tube sampler. The inner tube sampler is coaxially and rotatably arranged in the outer tube sampler. A sampling port is arranged at the end of the outer tube sampler, and a sampling cavity is arranged at the end of the inner tube sampler. After the inner tube sampler rotates to a certain angle, the sampling port communicates with the sampling cavity;

[0007] The sampling cavity is used to sample the concrete in the pile hole.

[0008] By adopting the above technical solution, when measuring the distance between the cast-in-place pile head and the casing, the outer tube sampler and the inner tube sampler are inserted into the pile hole. The inner tube sampler is rotated until the sampling port communicates with the sampling cavity, and the concrete enters the sampling cavity through the sampling port. The operator rotates the inner tube sampler so that the sampling cavity is completely misaligned with the sampling port, and the sampling cavity is closed. Then, the outer tube sampler and the inner tube sampler are lifted out to sample the concrete in the casing. After sampling, the position state of the cast-in-place pile head is judged by the composition and state of the obtained concrete sample. The provided outer tube sampler and inner tube sampler have a simple structure and convenient operation, which is convenient for accurately controlling the height of the over-poured pile head of the bored cast-in-place pile, thereby reducing the waste of concrete, saving construction materials, and at the same time reducing the labor cost of removing the over-poured pile head subsequently.

[0009] In a specific feasible implementation, the outer tube sampler includes an outer tube sampling section, an outer tube standard section, and an outer tube operation section; the sampling port is located on the side wall of the outer tube sampling section, and the sampling port communicates with the installation cavity; both ends of the outer tube standard section are threadedly connected to the outer tube sampling section and the outer tube operation section respectively, and the end of the outer tube sampling section away from the outer tube standard section is tapered; the outer tube sampling section, the outer tube standard section, and the outer tube operation section are all provided with an interconnected installation cavity, and the inner tube sampler is arranged in the installation cavity.

[0010] By adopting the above technical solution, for the provided outer tube sampler, the end of the outer tube sampling section is tapered, which is convenient for reducing the resistance of the outer tube sampling section when extending into the concrete. At the same time, the provided installation cavity is convenient for realizing the installation and fixation of the inner tube sampler in the outer tube sampler, thus facilitating the sampling operation of the concrete.

[0011] In a specific feasible implementation, the inner tube sampler includes an inner tube sampling section, an inner tube standard section, and an inner tube operation section; the inner tube sampling section is located in the installation cavity of the outer tube sampling section, the inner tube standard section is located in the installation cavity of the outer tube standard section, the inner tube operation section is located in the installation cavity of the outer tube standard section, the inner tube standard section is located between the inner tube sampling section and the inner tube operation section, and the inner tube sampling section, the inner tube standard section, and the inner tube operation section are connected by a square handle socket connection.

[0012] By adopting the above technical solution, for the provided inner tube sampler, the inner tube sampling section, the inner tube standard section, and the inner tube operation section are connected by a square handle socket connection, which is convenient for realizing the rapid assembly of the inner tube sampler. At the same time, using the square handle socket connection method to connect the inner tube sampler is convenient for ensuring the synchronous rotation of the inner tube sampling section, the inner tube standard section, and the inner tube operation section, and avoiding misalignment of the inner tube sampling section, the inner tube standard section, and the inner tube operation section, which affects the efficiency of concrete sampling.

[0013] In a specific feasible implementation, a rolling bearing is arranged in the installation cavity of the outer pipe sampling section. The rolling bearing is coaxially and fixedly connected to the inner wall of the outer pipe sampling section. The inner pipe sampling section passes through the rolling bearing, and the inner pipe sampling section is in interference fit with the rolling bearing.

[0014] By adopting the above technical solution, when the inner pipe sampling section rotates in the installation cavity of the outer pipe sampling section, the arranged rolling bearing facilitates reducing the rotation resistance of the inner pipe sampling section, facilitating the opening and closing of the sampling cavity, and thus facilitating the sampling of concrete.

[0015] In a specific feasible implementation, limiting collar rings are coaxially arranged on the inner walls of both the outer pipe standard section and the outer pipe operation section. The inner pipe standard section and the inner pipe operation section pass through the limiting collar rings.

[0016] By adopting the above technical solution, the arranged limiting collar rings facilitate limiting the inner pipe standard section and the inner pipe operation section, preventing the inner pipe sampler from shifting in the installation cavity, affecting the quality of the concrete sample, and thus interfering with the construction personnel's judgment of the position state of the pile head of the cast-in-place pile.

[0017] In a specific feasible implementation, an outer pipe operation handle is fixedly arranged on the side wall of one end of the outer pipe operation section away from the outer pipe standard section.

[0018] By adopting the above technical solution, the arranged outer pipe operation handle facilitates the operator to fix the outer pipe sampler during the concrete sampling, preventing the outer pipe sampler from tilting or sinking and affecting the sampling effect.

[0019] In a specific feasible implementation, an inner pipe operation handle is fixedly arranged on the side wall of one end of the inner pipe operation section away from the inner pipe standard section, and the inner pipe operation handle is located above the outer pipe operation handle.

[0020] By adopting the above technical solution, the arranged inner pipe operation handle facilitates the operator to apply force to the inner pipe operation section, enabling the inner pipe operation section to drive the inner pipe standard section and the inner pipe sampling section to rotate synchronously, and thus sampling the concrete.

[0021] In a specific feasible implementation, a spirit level is arranged at the end of the inner pipe operation section away from the inner pipe standard section.

[0022] By adopting the above technical solution, the operator adjusts the inner pipe sampler and the outer pipe sampler according to the state shown by the spirit level, facilitating ensuring that the inner pipe sampler and the outer pipe sampler are in a vertical state, and thus improving the accuracy of the concrete sampling.

[0023] In a specific feasible implementation, a scale ruler is arranged on the side wall of the outer pipe sampler along the axial direction.

[0024] By adopting the above technical solution, with the provided scale ruler, when the inner pipe sampler takes a sample, the operator can observe the depth of the outer pipe sampler extending into the casing through the scale ruler, thereby facilitating the operator to judge the position state of the pile head of the cast-in-place pile, and thus controlling the height of the over-poured pile head.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The provided outer pipe sampler and inner pipe sampler have a simple structure and convenient operation, facilitating accurate control of the height of the over-poured pile head of the bored cast-in-place pile, thereby reducing the waste of concrete, saving construction materials, and at the same time reducing the labor cost of removing the over-poured pile head subsequently. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the overall structure of a device for controlling the over-poured pile head of underwater concrete of a bored cast-in-place pile in an embodiment.

[0028] Figure 2 It is a sectional view of a device for controlling the over-poured pile head of underwater concrete of a bored cast-in-place pile in an embodiment.

[0029] Figure 3 It is an embodiment Figure 2 Enlarged view of part A.

[0030] Figure 4 It is an exploded view of the inner pipe sampler of a device for controlling the over-poured pile head of underwater concrete of a bored cast-in-place pile in an embodiment.

[0031] Description of the Drawings: 1. Outer pipe sampler; 11. Outer pipe sampling section; 111. Sampling port; 112. Rolling bearing; 12. Outer pipe standard section; 13. Outer pipe operation section; 14. Installation cavity; 15. Limit collar; 16. Outer pipe operation handle; 17. Scale ruler; 2. Inner pipe sampler; 21. Inner pipe sampling section; 211. Sampling cavity; 22. Inner pipe standard section; 23. Inner pipe operation section; 24. Inner pipe operation handle; 25. Spirit level; 26. Square plugging boss; 27. Square plugging groove. Detailed Description of the Embodiment

[0032] The following further elaborates on the present application in conjunction with the attached Figures 1-4 drawings.

[0033] The embodiment of the present application discloses a device for controlling the over-poured pile head of underwater concrete of a bored cast-in-place pile.

[0034] Refer to Figure 1, an underwater concrete overpour pile head control device for bored cast-in-place piles, including an outer tube sampler 1 and an inner tube sampler 2, and the inner tube sampler 2 is arranged in the outer tube sampler 1. A scale ruler 17 is arranged on the side wall of the outer tube sampler 1 along the axial direction. The outer tube sampler 1 includes an outer tube sampling section 11, an outer tube standard section 12, and an outer tube operation section 13. One end of the outer tube sampling section 11 extends into the underwater concrete cast-in-place pile, and the other end is threadedly connected to the outer tube standard section 12. The end of the outer tube standard section 12 away from the outer tube sampling section 11 is threadedly connected to the outer tube operation section 13; the end of the outer tube sampling section 11 away from the outer tube standard section 12 is conical, and a sampling port 111 is arranged on the side wall of the outer tube sampling section 11. Two outer tube operation handles 16 are arranged on the side wall of the outer tube operation section 13 away from the outer tube standard section 12, and the two outer tube operation handles 16 are circumferentially symmetrically arranged about the side wall of the outer tube standard section 12.

[0035] Refer to Figure 2 , the outer tube sampling section 11, the outer tube standard section 12, and the outer tube operation section 13 are all provided with interconnected installation cavities 14, and the sampling port 111 opened on the outer tube sampling section 11 is communicated with the installation cavity 14; the inner tube sampler 2 includes an inner tube sampling section 21, an inner tube standard section 22, and an inner tube operation section 23; the inner tube sampling section 21 is located in the installation cavity 14 of the outer tube sampling section 11, and a sampling cavity 211 is arranged on the side wall of the inner tube sampling section 21; the inner tube standard section 22 is located in the installation cavity 14 of the outer tube standard section 12, the inner tube operation section 23 is located in the installation cavity 14 of the outer tube standard section 12, the inner tube standard section 22 is located between the inner tube sampling section 21 and the inner tube operation section 23, and the inner tube sampling section 21, the inner tube standard section 22, and the inner tube operation section 23 are connected by a square handle socket connection.

[0036] Refer to Figure 2 and Figure 3 , a rolling bearing 112 is arranged in the installation cavity 14 of the outer tube sampling section 11, the rolling bearing 112 is coaxially fixedly connected to the inner wall of the outer tube sampling section 11, the inner tube sampling section 21 passes through the rolling bearing 112, and the inner tube sampling section 21 is in interference fit with the rolling bearing 112. After the inner tube sampling section 21 rotates a certain angle on the rolling bearing 112, the sampling cavity 211 is communicated with the sampling port 111, and concrete can enter the sampling cavity 211 from the sampling port 111; continue to rotate the inner tube sampling section 21 to a certain angle, and the sampling cavity 211 is completely closed by the side wall of the outer tube sampling section 11. Limiting collar rings 15 are coaxially arranged on the inner walls of the outer tube standard section 12 and the outer tube operation section 13, and the inner tube standard section 22 and the inner tube operation section 23 pass through the limiting collar rings 15. Two inner tube operation handles 24 are fixedly arranged on the side wall of the inner tube operation section 23 away from the inner tube standard section 22, the two inner tube operation handles 24 are circumferentially symmetrically arranged about the side wall of the inner tube operation section 23, and the inner tube operation handles 24 are located above the outer tube operation handles 16.

[0037] Reference Figure 2 and Figure 4 Figure 4 , a spirit level 25 is provided at the end of the inner tube operation section 23 away from the inner tube standard section 22. Square plug bosses 26 are provided at one end of the inner tube operation section 23 close to the inner tube standard section 22 and at one end of the inner tube standard section 22 close to the inner tube sampling section 21. Square plug slots 27 are provided at one end of the inner tube standard section 22 close to the inner tube operation section 23 and at one end of the inner tube sampling section 21 close to the inner tube standard section 22. The square plug slots 27 are fitted with the square plug bosses 26. By inserting the square plug bosses 26 into the square plug slots 27, the inner tube operation section 23 drives the inner tube standard section 22 and the inner tube sampling section 21 to move together.

[0038]

[0038] Specifically, this embodiment is provided with two outer tube standard sections 12 and two inner tube standard sections 22. According to the design elevation of the cast-in-place pile and the depth change of the casing, the number of outer tube standard sections 12 can be increased or decreased correspondingly between the outer tube sampling section 11 and the outer tube operation section 13, and the number of inner tube standard sections 22 can be increased or decreased correspondingly between the inner tube sampling section 21 and the inner tube operation section 23, so as to ensure that the outer tube sampler 1 and the inner tube sampler 2 can adapt to different sampling depths. At the same time, according to the positions of the sampling ports 111 and the sampling chambers 211, marks can also be set on the outer tube operation handle 16 and the inner tube operation handle 24. When rotating the inner tube operation section 23, the opening and closing states of the sampling chamber 211 can be judged by the positional relationship between the marks on the outer tube operation handle 16 and the inner tube operation handle 24.

[0039]

[0039] The implementation principle of the underwater concrete over-pouring pile head control device for a bored cast-in-place pile in this embodiment is as follows: after the underwater concrete cast-in-place pile is grouted, it is necessary to measure whether the over-pouring height meets the design requirements. First, the outer tube sampler 1 and the inner tube sampler 2 are assembled. In the initial state, the inner tube sampling section 21 is rotatably arranged in the installation cavity 14 of the outer tube sampling section 11, and the inner tube sampling section 21 is in interference fit with the rolling bearing 112 arranged on the inner wall of the outer tube sampling section 11. Then, the outer tube standard section 12 is threadedly connected to the outer tube sampling section 11. At the same time, the inner tube standard section 22 is inserted into the end of the inner tube sampling section 21, and the inner tube standard section 22 passes through the limit collar 15 arranged on the inner wall of the outer tube standard section 12. According to the design elevation of the cast-in-place pile and the casing, an appropriate number of outer tube standard sections 12 and inner tube standard sections 22 are selected for installation. Then, the outer tube operation section 13 is threadedly connected to the outer tube standard section 12, and the inner tube operation section 23 is inserted into the end of the inner tube standard section 22, and the inner tube operation section 23 passes through the limit collar 15 arranged on the inner wall of the outer tube operation section 13.

[0040] When conducting measurements, according to the calculated dimension of the distance between the top of the casing and the designed pile head elevation, and in accordance with the scale ruler 17 on the side wall of the outer pipe sampler 1 and the spirit level 25 at the top of the inner pipe operation section 23, the operator vertically inserts the assembled outer pipe sampler 1 and inner pipe sampler 2 into the designed pile head elevation of the pile hole. The operator fixes the outer pipe sampler 1 through the outer pipe operation handle 16, and then applies force to the inner pipe operation handle 24, so that the inner pipe operation section 23 drives the inner pipe standard section 22 and the inner pipe sampling section 21 to rotate. After rotating a certain angle, the sampling cavity 211 is completely communicated with the sampling port 111, and the slurry at the pile head flows into the sampling cavity 211 through the sampling port 111. Then, continue to apply force to the inner pipe operation handle 24, so that the inner pipe sampling section 21 continues to rotate, and the sampling cavity 211 is completely closed by the side wall of the outer pipe sampling section 11. The operator pulls out the outer pipe sampler 1 and the inner pipe sampler 2 from the pile hole, and judges whether the over-pouring height of the cast-in-place pile is qualified by observing the composition of the slurry in the sampling cavity 211. If the composition of the slurry is all concrete, it can be judged that the over-poured pile head height meets the design requirements. If the composition of the slurry is a mixture of concrete and mud, it can be judged that this position is the junction of concrete and mud. By lowering the sampling height and sampling again, the effective height of the pile head of the cast-in-place pile can be determined, so as to determine whether the over-poured pile head height meets the design requirements. If the composition of the slurry is all mud, it can be judged that the over-poured pile head height is too low and grouting needs to be continued.

[0041] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A control device for underwater over-casting of bored piles, characterized in that: The invention comprises an outer tube sampler (1) and an inner tube sampler (2), wherein the inner tube sampler (2) is coaxially rotatably arranged in the outer tube sampler (1), a sampling port (111) is arranged at the end of the outer tube sampler (1), and a sampling cavity (211) is arranged at the end of the inner tube sampler (2), and when the inner tube sampler (2) is rotated to a certain angle, the sampling port (111) is communicated with the sampling cavity (211); The sampling cavity (211) is used to sample the concrete in the pile hole.

2. A bored pile underwater concrete overfilling pile head control device according to claim 1, characterized in that: The outer tube sampler (1) comprises an outer tube sampling section (11), an outer tube standard section (12) and an outer tube operating section (13); the outer tube sampling section (11), the outer tube standard section (12) and the outer tube operating section (13) are all provided with mutually communicating mounting cavities (14); the inner tube sampler (2) is arranged in the mounting cavity (14); the sampling port (111) is located on the side wall of the outer tube sampling section (11), and the sampling port (111) is communicated with the mounting cavity (14); the two ends of the outer tube standard section (12) are respectively threadedly connected to the outer tube sampling section (11) and the outer tube operating section (13); and the end of the outer tube sampling section (11) away from the outer tube standard section (12) is arranged to be tapered.

3. A bored pile underwater concrete overfilling pile head control device according to claim 2, characterized in that: The inner tube sampler (2) comprises an inner tube sampling section (21), an inner tube standard section (22) and an inner tube operating section (23); the sampling cavity (211) is located on the side wall of the inner tube sampling section (21); the inner tube sampling section (21) is located in the installation cavity (14) of the outer tube sampling section (11); the inner tube standard section (22) is located in the installation cavity (14) of the outer tube standard section (12); the inner tube operating section (23) is located in the installation cavity (14) of the outer tube standard section (12); the inner tube standard section (22) is located between the inner tube sampling section (21) and the inner tube operating section (23); the inner tube sampling section (21), the inner tube standard section (22) and the inner tube operating section (23) are connected by a square handle socket type.

4. A bored pile underwater concrete overfilling pile head control device according to claim 3, characterized in that: A rolling bearing (112) is arranged in the installation cavity (14) of the outer tube sampling section (11), and the rolling bearing (112) is coaxially fixedly connected to the inner wall of the outer tube sampling section (11), and the inner tube sampling section (21) is arranged through the rolling bearing (112), and the inner tube sampling section (21) and the rolling bearing (112) are interference fit.

5. A bored pile underwater concrete overfilling pile head control device according to claim 4, characterized in that: The inner walls of the outer tube standard section (12) and the outer tube operating section (13) are both coaxially provided with a limiting collar (15), and the inner tube standard section (22) and the inner tube operating section (23) are arranged through the limiting collar (15).

6. A bored pile underwater concrete overfilling pile head control device according to claim 5, characterized in that: An outer tube operating handle (16) is fixedly provided on a side wall of one end of the outer tube operating section (13) away from the outer tube standard section (12).

7. A control device for underwater over-casting of bored piles according to claim 6, characterized in that: An inner tube operating handle (24) is fixedly provided on a side wall of one end of the inner tube operating section (23) away from the inner tube standard section (22), and the inner tube operating handle (24) is located above the outer tube operating handle (16).

8. A control device for underwater over-casting of bored piles according to claim 7, characterized in that: A level bubble (25) is provided at the end of the inner tube operating section (23) away from the inner tube standard section (22).

9. A control device for underwater over-casting of bored piles according to claim 8, characterized in that: The side wall of the outer tube sampler (1) is provided with a scale (17) along the axial direction.

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