A device for measuring the thickness of sediment of underwater concrete cast-in-place piles

Abstract

The present application relates to the field of bored concrete pile construction, and more particularly to a device for measuring the thickness of sediment in underwater bored concrete piles. A device for measuring the thickness of sediment in underwater bored concrete piles comprises a measuring rope, a measuring hammer and a detection plate; the measuring hammer is arranged below the detection plate, a through hole is provided at the center of the detection plate, the diameter of the through hole is smaller than the diameter of the measuring hammer, and the measuring rope passes through the through hole and is fixedly connected to the measuring hammer. In the present application, the detection plate is lowered into the pile hole together with the measuring hammer, the measuring hammer can be lowered to the bottom of the sediment, and the detection plate will stay at the bottom of the sediment under the support of the sediment, and the thickness of the sediment can be accurately measured by calculating the relative distance between the detection plate and the measuring hammer.

Description

Technical Field

[0001] The present application relates to the field of bored concrete pile construction, and in particular to a device for measuring the thickness of underwater bored concrete pile sediment. Background Art

[0002] The sediment thickness during concrete cast-in-place pile construction refers to the thickness of the sediment in the pile hole, from the pile bottom to the hole mouth, which is not the pile body part. It has a significant impact on the performance of the pile and the quality of the project. According to construction industry standards, such as the "Technical Specifications for Building Pile Foundations", different types of cast-in-place piles have specific restrictions on sediment thickness. Usually:

[0003] The allowable sediment thickness of end-bearing piles should not exceed 50mm to ensure that the pile tip can directly act on the bearing layer. The sediment thickness of friction piles is usually required to be no more than 100mm to ensure sufficient contact between the pile and the soil. For piles that resist pullout or horizontal forces, the allowable sediment thickness may be relaxed to 200mm. Therefore, in the construction of concrete cast-in-place piles, controlling the sediment thickness is an important link to ensure the bearing capacity and stability of the piles.

[0004] During the construction of underwater bored concrete piles, it is impossible to actually see the actual situation at the bottom of the hole. At the same time, it is limited by factors such as the density of cement slurry in the hole, the type of sediment, the material and shape of the hammer, etc., so it is difficult to accurately detect the thickness of the sediment, which affects the construction quality of the bored concrete piles. Utility Model Content

[0005] In order to accurately detect the thickness of sediment, the present application provides a device for measuring the thickness of sediment of underwater concrete bored piles.

[0006] The device for measuring the thickness of underwater concrete cast-in-place pile sediment provided in this application adopts the following technical solution:

[0007] A device for measuring the thickness of sediment of an underwater concrete cast-in-place pile, comprising a measuring rope, a measuring hammer and a detection plate;

[0008] The measuring hammer is arranged below the detection plate. A through hole is provided at the center of the detection plate. The diameter of the through hole is smaller than the diameter of the measuring hammer. The measuring rope passes through the through hole and is fixedly connected to the measuring hammer.

[0009] By adopting the above technical solution, the detection plate and the measuring hammer are lowered into the pile hole together. The measuring hammer can be lowered to the bottom of the sediment, and the detection plate will stay at the bottom of the sediment under the support of the sediment. By calculating the relative distance between the detection plate and the measuring hammer, the thickness of the sediment can be accurately measured.

[0010] Preferably, the measuring hammer comprises a hammer body and a pull rod, wherein the pull rod is located above the hammer body and fixedly connected to the hammer body, the pull rod is plug-fitted with the through hole, and the measuring rope is fixedly connected to the pull rod.

[0011] By adopting the above technical solution, the upper end of the pull rod is plugged into the through hole on the detection plate, so that the detection plate and the measuring hammer remain relatively stable and are easy to be lowered together.

[0012] Preferably, a frustoconical transition portion is provided at the connection between the pull rod and the hammer body, and the end of the through hole is configured to be conical and corresponds to the transition portion.

[0013] By adopting the above technical solution, the relative stability of the detection plate and the measuring hammer is further enhanced, and the accuracy of lowering the detection plate is improved.

[0014] Preferably, a pull rope is further provided between the detection disk and the measuring rope, and two ends of the pull rope are respectively fixedly connected to the detection disk and the measuring rope. When the measuring hammer abuts against the detection disk, the pull rope is in a stretched state.

[0015] By adopting the above technical solution, the weight of the detection plate acts on the measuring rope through the pull rope instead of the connection between the measuring rope and the measuring hammer, thereby ensuring the reliability of the connection between the measuring hammer and the measuring rope. It can also improve the stability of the detection plate during the lowering or lifting process.

[0016] Preferably, the pull rope is provided in plurality and is distributed around the circumference of the measuring rope.

[0017] By adopting the above technical solution, this layout not only improves the overall strength of the pull rope, but also helps to maintain the stability of the detection plate during the lowering process, and reduces the measurement error caused by the tilt of the detection plate.

[0018] Preferably, the detection disk is provided with connecting ribs, the connecting ribs are penetrated with connecting rings, and the pull rope is fixedly connected to the connecting rings.

[0019] By adopting the above technical solution, the pull rope is firmly connected to the detection plate through the fixed connection with the connecting ring. This structural design not only simplifies the assembly process, but also improves the reliability of the connection, providing a strong guarantee for the smooth progress of the measurement operation.

[0020] Preferably, it further comprises a bracket, on which a reference pole is arranged.

[0021] By adopting the above technical solution, the benchmark pole can provide a clear reference point for the measurement process, so as to facilitate the accurate recording of the measuring rope length data.

[0022] Preferably, the reference pole is vertically slidably connected to the bracket.

[0023] By adopting the above technical solution, this connection method enables the benchmark pole to be flexibly adjusted according to actual needs, thereby better meeting diverse measurement scenarios.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The present application adopts a combination of a measuring rope, a measuring hammer and a detection plate. When in use, the detection plate and the measuring hammer are lowered into the pile hole together. The measuring hammer can be lowered to the bottom of the sediment, and the detection plate will stay at the bottom of the sediment under the support of the sediment. By calculating the relative distance between the detection plate and the measuring hammer, the thickness of the sediment can be accurately measured;

[0026] 2. The present application further provides a solution for adding a pull rope, where the weight of the test plate acts on the measuring rope instead of the connection between the measuring rope and the measuring hammer through the pull rope, thereby ensuring the reliability of the connection between the measuring hammer and the measuring rope. It can also improve the stability of the test plate during the lowering or lifting process, making it easier for the operator to accurately control the test plate and improve the detection accuracy. The setting of the pull rope also helps to maintain the stability of the test plate during the lowering process and reduce the measurement error caused by the tilt of the test plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the device for measuring the sediment thickness of underwater concrete bored piles in Example 1 of the present application;

[0028] Figure 2 It is a schematic diagram of the connection structure between the measuring hammer and the detection plate in Example 1 of the present application.

[0029] Figure 3 It is a schematic diagram of the connection structure between the detection disk and the measuring rope in Example 2 of the present application.

[0030] Markings in the attached drawings: 1. bracket; 2. reel; 3. measuring rope; 4. measuring hammer; 41. hammer body; 42. pull rod; 43. transition part; 5. detection plate; 51. connecting rib; 52. connecting ring; 6. benchmark pole; 7. pull rope. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] Example 1

[0033] The device for measuring the thickness of underwater concrete bored pile sediment provided in the embodiment of the present application is intended to accurately detect the thickness of sediment to improve the construction quality control level of concrete bored piles. Figure 1 The device includes a bracket 1, a drum 2, a measuring rope 3, a measuring hammer 4 and a detection disk 5.

[0034] Specifically, the bracket 1 is a basic support structure, which provides stable support for the entire device. The reel 2 is arranged horizontally and is rotatably connected to the bracket 1, and the measuring rope 3 is wound on the reel 2. The length of the measuring rope 3 is controlled by rotating the reel 2. A through hole is opened at the center of the detection disk 5, and the measuring rope 3 passes through the through hole and extends downward to the bottom of the detection disk 5. The measuring hammer 4 is arranged below the detection disk 5 and is fixedly connected to the measuring rope 3, so that the measuring hammer 4 can be stably suspended at the lower end of the measuring rope 3. The diameter of the measuring hammer 4 is smaller than the diameter of the through hole.

[0035] When the device is in use, when the measuring rope 3 is pulled up to make the hammer 4 closely contact the lower surface of the detection disk 5, the distance from the tip of the hammer 4 to the lower surface of the detection disk 5 is measured and recorded as C, where C is a constant. Then, the drum 2 is rotated to lower the hammer 4 into the pile hole. Since the diameter of the hammer 4 is smaller than the diameter of the through hole, the detection disk 5 can be hung above the hammer 4 and lowered together with the hammer 4. The hammer 4 is lowered to the bottom of the sediment, and the length of the measuring rope 3 is recorded as B. The detection disk 5 will stay on the top of the sediment under the support of the sediment. When the hammer 4 is pulled up until the hammer 4 contacts the bottom of the detection disk 5, the length of the measuring rope 3 is recorded as A. The thickness of the sediment is ABC.

[0036] In the present application, the detection plate 5 can be made of cast iron or other materials, so that the detection plate 5 can compress the sediment under the action of its own gravity, avoiding the high sediment thickness caused by partial floating of the sediment, thereby measuring the actual thickness of the sediment.

[0037] Reference Figure 2 Furthermore, the measuring hammer 4 includes two parts, a hammer body 41 and a pull rod 42. The pull rod 42 is located above the hammer body 41 and is fixedly connected to the hammer body 41, and the lower end of the measuring rope 3 is fixedly connected to the pull rod 42. The upper end of the pull rod 42 is plugged into the through hole on the detection plate 5, so that the detection plate 5 and the measuring hammer 4 remain relatively stable and are convenient for being lowered together.

[0038] More specifically, a frustum-shaped transition portion 43 is designed at the connection between the pull rod 42 and the hammer body 41. Correspondingly, the end of the through hole on the detection plate 5 is also conical, forming a close fit with the transition portion 43, further enhancing the relative stability of the detection plate 5 and the hammer 4, and improving the accuracy of lowering the detection plate 5.

[0039] In order to further improve the measurement accuracy of the three data A, B, and C, a reference pole 6 is also provided on the bracket 1, and the reference pole 6 is horizontally placed and connected to the bracket 1. The reference pole 6 can provide a clear and accurate reference point for recording the length of the measuring rope 3, so as to ensure the accuracy of the data.

[0040] In order to meet the measurement requirements of different construction environments, the reference pole 6 can be vertically slidably connected to the bracket 1. This connection method enables the reference pole 6 to be flexibly adjusted according to actual needs, thereby better meeting the diverse measurement scenarios.

[0041] In addition, as a key component in the measurement process, the measuring rope 3 is preferably made of a flexible material. The measuring rope 3 made of a flexible material not only has good flexibility and wear resistance, but can also better fit the hole wall for measurement, thereby reducing measurement errors and improving measurement accuracy. At the same time, the use of the flexible measuring rope 3 also enhances the flexibility and convenience of measurement, providing convenient conditions for rapid detection during construction.

[0042] Example 2

[0043] On the basis of embodiment 1, the embodiment of the present application further provides a solution for adding a pull rope 7. Figure 3 The pull rope 7 is arranged between the detection plate 5 and the measuring rope 3, and its two ends are fixedly connected with the detection plate 5 and the measuring rope 3 respectively. When the measuring hammer 4 abuts against the detection plate 5, the pull rope 7 is in a straightened state. Therefore, the weight of the detection plate 5 acts on the measuring rope 3 rather than the connection between the measuring rope 3 and the measuring hammer 4 through the pull rope 7, thereby ensuring the reliability of the connection between the measuring hammer 4 and the measuring rope 3. It can also improve the stability of the detection plate 5 during the lowering or lifting process, which is convenient for the operator to accurately control the detection plate 5 and improve the detection accuracy.

[0044] In order to enhance the stability and carrying capacity of the pull rope 7, a plurality of pull ropes 7 can be provided and distributed around the periphery of the measuring rope 3. This layout not only improves the overall strength of the pull rope 7, but also helps to maintain the stability of the detection plate 5 during the lowering process, and reduces the measurement error caused by the tilt of the detection plate 5.

[0045] At the same time, in order to facilitate the connection between the detection disk 5 and the drawstring 7, a connecting rib 51 is fixed to the upper end surface of the detection disk 5, and a connecting ring 52 is passed through the connecting rib 51. The drawstring 7 is firmly connected to the detection disk 5 by being fixedly connected to the connecting ring 52. This structural design simplifies the assembly process and improves the reliability of the connection, providing a strong guarantee for the smooth progress of the measurement operation.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for measuring the thickness of sediment of underwater concrete piles, characterized in that: It comprises a measuring rope (3), a measuring hammer (4) and a detection plate (5); The measuring hammer (4) is arranged below the detection plate (5); a through hole is provided at the center of the detection plate (5); the diameter of the through hole is smaller than the diameter of the measuring hammer (4); the measuring rope (3) passes through the through hole and is fixedly connected to the measuring hammer (4).

2. The device for measuring sediment thickness of underwater concrete bored piles according to claim 1, characterized in that: The measuring hammer (4) comprises a hammer body (41) and a pull rod (42), wherein the pull rod (42) is located above the hammer body (41) and is fixedly connected to the hammer body (41), the pull rod (42) is plugged into the through hole, and the measuring rope (3) is fixedly connected to the pull rod (42).

3. The device for measuring the thickness of underwater concrete pile sediment according to claim 2, characterized in that: A frustum-shaped transition portion (43) is provided at the connection between the pull rod (42) and the hammer body (41), and the end of the through hole is arranged in a cone shape and corresponds to the transition portion (43).

4. The device for measuring sediment thickness of underwater concrete cast-in-place piles according to claim 1, characterized in that: A pull rope (7) is further provided between the detection disk (5) and the measuring rope (3), and two ends of the pull rope (7) are respectively fixedly connected to the detection disk (5) and the measuring rope (3). When the measuring hammer (4) abuts against the detection disk (5), the pull rope (7) is in a stretched state.

5. The device for measuring the thickness of underwater concrete pile sediment according to claim 4, characterized in that: The pull ropes (7) are provided in plurality and are distributed around the circumference of the measuring rope (3).

6. The device for measuring the thickness of underwater concrete pile sediment according to claim 4, characterized in that: The detection plate (5) is provided with a connecting rib (51), a connecting ring (52) is passed through the connecting rib (51), and the pull rope (7) is fixedly connected to the connecting ring (52).

7. The device for measuring the thickness of underwater concrete pile sediment according to claim 1, characterized in that: It also comprises a bracket (1), on which a reference pole (6) is arranged.

8. The device for measuring sediment thickness of underwater concrete cast-in-place piles according to claim 7, characterized in that: The reference pole (6) is vertically slidably connected to the bracket (1).

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