Detection device for sediment thickness of cast-in-situ bored pile

Abstract

The utility model relates to the technical field of pile foundation construction, in particular to a cast-in-situ bored pile sediment thickness detection device which comprises a measuring disc, a measuring hammer, a first measuring rope and a second measuring rope. The measuring hammer is fixedly connected to the bottom of the first measuring rope, the measuring disc is fixedly connected to the bottom of the second measuring rope, and the size of the measuring disc is smaller than or equal to that of a drill hole. The number of the second measuring ropes is at least two, and the two second measuring ropes are vertically arranged on the two opposite sides of the measuring disc. A first through hole is formed in the measuring disc and is used for allowing the measuring hammer to pass through; the first through hole is located on a connecting line of connecting points of the two second measuring ropes and the measuring disc. When the measuring hammer penetrates through the first through hole to obtain the sediment thickness at the corresponding position, the sediment thickness corresponding to the connecting point of the measuring disc and the second measuring rope can be obtained according to the position proportion of the first through hole on the connecting line of the connecting points of the two second measuring ropes and the measuring disc, and therefore multiple sets of data of the sediment thickness below the measuring disc are obtained. The corresponding sediment distribution condition below the measuring disc is fully mastered, and the detection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pile foundation construction, and in particular to a device for detecting sediment thickness of bored cast-in-place piles. Background Art

[0002] During the excavation of bored piles, the boring machine may not clean the hole in a timely and thorough manner, resulting in sediment at the bottom of the pile. If the thickness of the sediment at the bottom of the hole is too large, it will affect the bearing performance of the bored pile. Therefore, before the pile foundation pouring construction, it is often necessary to test the sediment thickness as one of the bases for evaluating the bearing capacity of the bored pile.

[0003] Since the sediment is not evenly distributed at the bottom of the borehole, different detection positions have corresponding sediment thicknesses. Comprehensively obtaining the thickness data of the sediment at the bottom of the hole is crucial for determining the bearing capacity of the bored pile. However, the traditional sediment thickness detection device can only obtain the sediment thickness at one position at a time, which is inefficient.

[0004] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0005] The purpose of the present application is to provide a device for detecting the sediment thickness of bored cast-in-place piles, so as to solve or alleviate the problems existing in the above-mentioned prior art.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] A device for detecting the sediment thickness of bored piles, the device comprising a measuring plate, a measuring hammer, a first measuring rope, and a second measuring rope;

[0008] The measuring hammer is fixedly connected to the bottom of the first measuring rope, the measuring plate is fixedly connected to the bottom of the second measuring rope, and the size of the measuring plate is smaller than or equal to the size of the borehole;

[0009] There are at least two second measuring ropes, and the two second measuring ropes are vertically arranged on two opposite sides of the measuring plate;

[0010] The measuring disc is provided with a first through hole for passing the measuring hammer;

[0011] The first through hole is located on the line connecting the connection points of the two second measuring ropes and the measuring disc.

[0012] The device for detecting sediment thickness of bored piles as described above, preferably, further comprises a measuring tube;

[0013] The bottom of the measuring cylinder is rotatably connected to the measuring disc via a ball joint;

[0014] The measuring cylinder is located above the first through hole.

[0015] In the above-mentioned device for detecting sediment thickness of bored cast-in-place piles, preferably, the measuring tube is telescopically arranged along the axial direction.

[0016] The device for detecting sediment thickness of bored piles as described above, preferably, the device further comprises a tray;

[0017] The size of the tray is larger than the size of the hole of the drilled hole;

[0018] The top of the measuring cylinder is connected to the bottom of the tray;

[0019] The tray is provided with a second through hole and a third through hole; the second through hole is connected with the measuring tube and the first through hole; the third through hole is correspondingly arranged above the connection point between the second measuring rope and the measuring disc.

[0020] In the above-mentioned device for detecting sediment thickness of bored cast-in-place piles, preferably, the top of the measuring cylinder is rotatably connected to the bottom of the tray via a ball joint.

[0021] The above-mentioned device for detecting sediment thickness of bored piles is preferably configured such that two second measuring ropes arranged on both sides of the measuring plate are set as a group;

[0022] A plurality of groups of the second measuring ropes are fixedly connected to the outer periphery of the measuring plate.

[0023] In the above-mentioned device for detecting sediment thickness of bored cast-in-place piles, preferably, the second measuring rope is provided with scale lines.

[0024] In the above-mentioned device for detecting sediment thickness of bored cast-in-place piles, preferably, the two second measuring ropes are of equal length.

[0025] In the above-mentioned device for detecting sediment thickness of bored cast-in-place piles, preferably, the size of the measuring disc is equal to the size of the borehole.

[0026] In the device for detecting sediment thickness of bored cast-in-place piles as described above, preferably, a plurality of air holes are provided at intervals on the measuring plate.

[0027] Compared with the closest prior art, the technical solution of the embodiment of the present application has the following beneficial effects:

[0028] By connecting two second measuring ropes on opposite sides of the measuring disc, when the sediment thickness at the corresponding position is obtained by passing the measuring hammer through the first through hole, the sediment thickness corresponding to the connection point between the measuring disc and the second measuring ropes can be obtained according to the position ratio of the first through hole on the line connecting the connection points of the two second measuring ropes and the measuring disc. When the staff adjusts the measuring disc by continuously rotating and adjusting the measuring disc to obtain the maximum value of the height difference between the two connection points of the measuring disc and the second measuring ropes, at this time, the direction of the line connecting the connection points of the two second measuring ropes and the measuring disc is the inclination direction of the measuring disc on the sediment surface. Correspondingly, the sediment thickness at the connection points between the measuring disc and the two second measuring ropes is the sediment thickness corresponding to the highest point and the lowest point of the measuring disc at this time. In this way, multiple sets of data on the sediment thickness below the measuring disc can be obtained, so as to fully grasp the corresponding sediment distribution below the measuring disc and improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. Among them:

[0030] Figure 1 A schematic cross-sectional structure diagram of a device for detecting sediment thickness of bored cast-in-place piles provided according to some embodiments of the present application;

[0031] Figure 2 A top view of a measuring disc provided according to some embodiments of the present application.

[0032] Description of reference numerals:

[0033] 1. Tray; 2. Measuring plate; 3. Measuring tube; 4. Measuring hammer; 5. First through hole; 6. Second through hole; 7. Third through hole; 8. First measuring rope; 9. Second measuring rope; 10. Air vent; 11. Sediment. DETAILED DESCRIPTION

[0034] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application and does not limit the present application. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present application without departing from the scope or spirit of the present application. For example, a feature shown or described as a part of an embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present application includes such modifications and variations within the scope of the appended claims and their equivalents.

[0035] In the following description, the terms "first / second / third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first / second / third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0037] In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and do not require that the present application must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application. The terms "connected", "connected", and "set" used in the present application should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component; it can be a wired electrical connection, a radio connection, or a wireless communication signal connection. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0038] The following will be combined with the attached Figure 1-2 A device for detecting the thickness of bored cast-in-place pile sediment 11 of the present application is further described in detail.

[0039] A device for detecting the thickness of bored pile sediment 11, the device comprising a measuring plate 2, a measuring hammer 4, a first measuring rope 8, and a second measuring rope 9;

[0040] The measuring hammer 4 is fixedly connected to the bottom of the first measuring rope 8, and the measuring plate 2 is fixedly connected to the bottom of the second measuring rope 9. The size of the measuring plate 2 is smaller than or equal to the size of the drill hole.

[0041] At least two second measuring ropes 9 are provided, and the two second measuring ropes 9 are vertically arranged on two opposite sides of the measuring plate 2;

[0042] The measuring plate 2 is provided with a first through hole 5 for passing a measuring hammer 4;

[0043] The first through hole 5 is located on the line connecting the connection points of the two second measuring ropes 9 and the measuring disc 2 .

[0044] In a specific embodiment of the present application, the measuring disc 2 is a circular plate structure made of steel plate, and the measuring hammer 4 is an inverted cone structure made of steel bar. A first through hole 5 is provided at the center of the measuring disc 2 to allow the measuring hammer 4 to pass through, and two second measuring ropes 9 are tied to the edges of both sides of the measuring disc 2. The cross-sectional size of the measuring disc 2 is less than or equal to the cross-sectional size of the borehole, so as to allow the measuring disc 2 to be lowered in the borehole.

[0045] In actual operation, firstly, the overall length of the two second side ropes set relatively to each other is measured and recorded. The staff slowly lowers the measuring plate 2 to the bottom of the borehole along the vertical direction through the second measuring rope 9 until the measuring plate 2 reaches the surface of the sediment 11. At this time, the length of the two second measuring ropes 9 outside the borehole is measured and recorded, and the length of the second measuring rope 9 outside the borehole is subtracted from the overall length of the second measuring rope 9 to obtain the corresponding length of the second measuring rope 9 lowered in the borehole. When the sediment 11 is unevenly distributed at the bottom of the hole and there are ups and downs, the measuring plate 2 is set at an angle on the surface of the sediment 11 accordingly. By calculating the difference between the lengths of the two second measuring ropes 9 set relatively to each other in the borehole obtained by the above operation, the height difference between the two connection points of the measuring plate 2 and the second measuring rope 9 can be obtained. Then, when the thickness of the sediment 11 at the corresponding position is obtained by passing the measuring hammer 4 through the first through hole 5, the thickness of the sediment 11 corresponding to the connection point of the measuring plate 2 and the second measuring rope 9 can be obtained according to the position ratio of the first through hole 5 on the line connecting the connection points of the two second measuring ropes 9 and the measuring plate 2. Furthermore, when the staff obtains the maximum value of the height difference between the two connection points of the measuring disc 2 and the second measuring rope 9 by continuously rotating and adjusting the measuring disc 2, at this time, the direction of the line connecting the connection points of the two second measuring ropes 9 and the measuring disc 2 is the inclination direction of the measuring disc 2 on the surface of the sediment 11. Correspondingly, the thickness of the sediment 11 at the connection points of the measuring disc 2 and the two second measuring ropes 9 is the thickness of the sediment 11 corresponding to the highest point and the lowest point of the measuring disc 2 at this time, thereby obtaining multiple sets of data on the thickness of the sediment 11 below the measuring disc 2, thereby fully understanding the distribution of the sediment 11 below the measuring disc 2 and improving the detection efficiency.

[0046] The detection device also includes a measuring tube 3;

[0047] The bottom of the measuring tube 3 is rotatably connected to the measuring disc 2 via a ball joint;

[0048] The measuring cylinder 3 is located above the first through hole 5 .

[0049] In the specific embodiment of the present application, the measuring cylinder 3 is a cylindrical structure with a through cavity in the middle, and the through cavity of the measuring cylinder 3 is connected to the first through hole 5 to provide a guide for the lowering of the measuring hammer 4. In actual operation, the measuring hammer 4 is continuously lowered along the through cavity of the measuring cylinder 3, passes through the first through hole 5 and reaches the bottom of the sediment 11.

[0050] In order to improve the application range of the detection device, the measuring tube 3 is axially telescopically arranged to match the detection requirements for the thickness of the sediment 11 at the bottom of the borehole of different depths.

[0051] The detection device also includes a tray 1;

[0052] The size of the tray 1 is larger than the size of the hole to be drilled;

[0053] The top of the measuring cylinder 3 is connected to the bottom of the tray 1;

[0054] The tray 1 is provided with a second through hole 6 and a third through hole 7; the second through hole 6 is connected with the measuring tube 3 and the first through hole 5; the third through hole 7 is correspondingly arranged above the connection point between the second measuring rope 9 and the measuring disc 2.

[0055] In the specific embodiment of the present application, the tray 1 is a circular plate-shaped structure made of steel plate, and the cross-sectional size of the tray 1 is larger than the cross-sectional size of the drilling hole. In actual operation, the tray 1 is stopped and set outside the drilling hole, and the top of the measuring cylinder 3 is connected to the bottom of the tray 1, so that the measuring cylinder 3 is suspended above the drilling hole; the second through hole 6 is located at the center of the tray 1, and the second through hole 6 is connected with the through cavity of the measuring cylinder 3 and the first through hole 5 in the vertical direction; the measuring hammer 4 passes through the second through hole 6, the through cavity of the measuring cylinder 3, and the first through hole 5 in turn, and reaches the sediment 11 at the bottom of the hole; the third through hole 7 is relatively set on both sides of the tray 1, and the two second measuring ropes 9 pass through the corresponding third through holes 7 in turn, and are connected to the two sides of the measuring plate 2 in the vertical direction.

[0056] In order to reduce the impact of the flatness of the drilling hole position on the detection data, the top of the measuring cylinder 3 is rotatably connected to the bottom of the tray 1 through a ball joint. When the flatness of the drilling hole of the tray 1 affects the tilt setting, the measuring cylinder 3 can be adjusted to a vertical state by its own gravity and the gravity of the lower structure, so that the first measuring rope 8 can always be lowered in the vertical direction, and accurate data of the thickness of the sediment 11 at the corresponding detection position can be obtained.

[0057] Since the distribution of sediment 11 at the bottom of the borehole varies, for ease of operation, two second measuring ropes 9 arranged on both sides of the measuring plate 2 are set as a group;

[0058] A plurality of groups of second measuring ropes 9 are fixedly connected to the outer periphery of the measuring disc 2 .

[0059] In actual operation, for the group with the largest difference in lowering length in the borehole, the direction of the line connecting the connection points of the two corresponding second measuring ropes 9 and the measuring disc 2 is the inclination direction of the measuring disc 2 on the surface of the sediment 11. By calculating the thickness of the sediment 11 based on the difference data in this direction, the maximum and minimum thickness of the sediment 11 corresponding to the bottom of the measuring disc 2 can be obtained.

[0060] In order to facilitate data calculation, scale lines are provided on the second measuring rope 9. By observing the scale lines on the second measuring rope 9, the lowering length of the second measuring rope 9 in the borehole can be obtained.

[0061] In order to further reduce the workload of data calculation, the two second measuring ropes 9 are equal in length.

[0062] The size of the measuring disc 2 is equal to the size of the drilled hole.

[0063] In a specific embodiment of the present application, the cross-sectional size of the measuring disc 2 is equal to the cross-sectional size of the borehole, so that the measuring disc 2 can completely cover the sediment 11 at the bottom of the borehole while allowing the measuring disc 2 to be lowered in the borehole, so that the distribution of the sediment 11 in the entire range of the bottom of the hole can be obtained through a single detection.

[0064] A plurality of air holes 10 are provided at intervals on the measuring plate 2 to reduce the resistance of the measuring plate 2 when it is lowered, so as to prevent the measuring plate 2 from tilting during the lowering process, thereby affecting the accuracy of the data detection of the sediment 11 .

[0065] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for detecting the thickness of bored pile sediment, characterized in that: The detection device comprises a measuring plate, a measuring hammer, a first measuring rope and a second measuring rope; The measuring hammer is fixedly connected to the bottom of the first measuring rope, the measuring plate is fixedly connected to the bottom of the second measuring rope, and the size of the measuring plate is smaller than or equal to the size of the borehole; There are at least two second measuring ropes, and the two second measuring ropes are vertically arranged on two opposite sides of the measuring plate; The measuring disc is provided with a first through hole for passing the measuring hammer; The first through hole is located on the line connecting the connection points of the two second measuring ropes and the measuring disc.

2. A device for detecting sediment thickness of bored piles as claimed in claim 1, characterized in that: The detection device also includes a measuring cylinder; The bottom of the measuring cylinder is rotatably connected to the measuring disc via a ball joint; The measuring cylinder is located above the first through hole.

3. A device for detecting sediment thickness of bored piles as claimed in claim 2, characterized in that: The measuring cylinder is telescopically arranged along the axial direction.

4. A device for detecting sediment thickness of bored piles as claimed in claim 3, characterized in that: The detection device also includes a tray; The size of the tray is larger than the size of the hole of the drilled hole; The top of the measuring cylinder is connected to the bottom of the tray; The tray is provided with a second through hole and a third through hole; the second through hole is connected with the measuring tube and the first through hole; the third through hole is correspondingly arranged above the connection point between the second measuring rope and the measuring disc.

5. A device for detecting sediment thickness of bored piles as claimed in claim 4, characterized in that: The top of the measuring cylinder is rotatably connected to the bottom of the tray via a ball joint.

6. A device for detecting sediment thickness of bored piles as claimed in claim 1, characterized in that: Two of the second measuring ropes arranged on both sides of the measuring plate are set as a group; A plurality of groups of the second measuring ropes are fixedly connected to the outer periphery of the measuring plate.

7. A device for detecting sediment thickness of bored piles as claimed in claim 1, characterized in that: The second measuring rope is provided with scale lines.

8. A device for detecting sediment thickness of bored piles as claimed in claim 1, characterized in that: The two second measuring lines are of equal length.

9. A device for detecting sediment thickness of bored piles as claimed in claim 1, characterized in that: The size of the measuring disc is equal to the size of the drilled hole.

10. A device for detecting sediment thickness of bored piles according to any one of claims 1 to 9, characterized in that: A plurality of air holes are arranged at intervals on the measuring plate.

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