Cast-in-place pile sediment monitoring equipment and system based on sonar

Abstract

The invention relates to the related technical field of sonar cast-in-place pile construction, in particular to sonar-based cast-in-place pile sediment monitoring equipment and system.The sonar-based cast-in-place pile sediment monitoring equipment comprises a detection rod, a first circular ring plate, a second circular ring plate, a signal cable, a pay-off wheel, a transmitting transducer and a receiving transducer; the upper rod body and the lower rod body are connected through a connecting piece, the detection rod is lowered into a drill hole in the actual use process, the first circular ring plate is fixedly connected to the upper rod body, and the second circular ring plate is fixedly connected to the lower rod body; by arranging the sonar-based cast-in-place pile sediment monitoring equipment formed by combining a detection rod, a first circular ring plate, a second circular ring plate, a signal cable, a pay-off wheel, a transmitting transducer and a receiving transducer, through signal transmitting and receiving time difference and strength analysis of the transmitting transducer and the receiving transducer, and by combining pressure and resistivity data, the sediment of the cast-in-place pile can be monitored. And the height value and the thickness value of the sediment interface in the drill hole can be more accurately determined.

Description

Technical Field

[0001] The present invention relates to the technical field related to sonar bored pile construction, and in particular to sonar bored pile sediment monitoring equipment and system. Background Art

[0002] In the construction industry, cast-in-place piles are a common foundation, and their construction quality is crucial to the stability of the entire building structure. Sediment thickness is a key factor affecting the bearing capacity of cast-in-place piles. Excessive sediment thickness reduces the effective contact area between the pile body and the bearing stratum, thereby reducing the bearing capacity of the cast-in-place pile and compromising building safety.

[0003] At present, the common bored pile sediment monitoring methods on the market mainly include the resistivity method. The resistivity method uses the difference in resistivity between the sediment and the pile bottom medium to determine the sediment interface and thickness. However, this method has many limitations. On the one hand, the detection method is relatively simple and only relies on the physical quantity of resistivity. Under the actual complex geological conditions, there are a variety of substances with different conductivity in the stratum, which can easily interfere with the measurement results, resulting in only a rough judgment of the interface between the mud and the sediment, and the reliability of the detection results is low. On the other hand, the existing equipment is unable to comprehensively analyze the sediment situation by integrating multiple information, and it is difficult to realize real-time processing and display of data, which cannot meet the needs of modern construction for high-precision and high-efficiency monitoring. For this reason, the present invention proposes a sonar-based bored pile sediment monitoring device and system to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a sonar-based cast-in-place pile sediment monitoring device and system to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a sonar-based cast-in-place pile sediment monitoring device, comprising:

[0006] A probe rod, comprising an upper rod body, a lower rod body and a connecting piece, wherein the upper rod body and the lower rod body are connected by the connecting piece, and the probe rod is lowered into the borehole when actually used;

[0007] a first annular plate fixedly connected to the upper rod body;

[0008] a second annular plate, the second annular plate being fixedly connected to the lower rod body;

[0009] A signal cable connected to the connecting post at the upper end of the upper rod body;

[0010] A pay-off wheel, wherein both sides of the pay-off wheel are fixedly connected to a rotating shaft, a rotating shaft seat is fixedly installed at the end of the drill hole, the rotating shaft is rotatably installed on the rotating shaft seat, and a hand crank is fixedly connected to the end face of the pay-off wheel;

[0011] a transmitting transducer, wherein the transmitting transducer is fixed on the lower rod body;

[0012] A receiving transducer is fixed on the lower rod body.

[0013] Preferably, a conical head is formed on the lower side end of the lower rod body, and a pressure sensor unit and a resistance sensor unit are installed on the conical head.

[0014] Preferably, an upper screw hole is provided on the upper rod body, and a lower screw hole is provided on the lower rod body. The connecting part includes a connecting column, an upper screw, a lower screw, and a screw nut. The upper screw and the lower screw are respectively integrally formed with the upper and lower end faces of the connecting column, and the screw nut is integrally formed on the side wall of the connecting column. The thread direction of the upper screw is opposite to the thread direction of the lower screw, and the upper screw and the lower screw are respectively screwed into the upper screw hole and the lower screw hole.

[0015] Preferably, a guide tube is fixedly welded to the lower end surface of the first circular plate, and a guide rod is fixedly welded to the upper end surface of the second circular plate. The guide rod is arranged corresponding to the guide tube, and the guide rod is movably arranged in the guide tube.

[0016] Preferably, the signal cable includes a traction layer and a signal line, the traction layer is provided to cover the outer end of the signal line, and the lower end of the traction layer is fixedly connected to the connecting column.

[0017] Preferably, wiring holes are opened through the connecting column, upper screw and lower screw, and wire channels are opened on the upper rod body and lower rod body. The signal line is set through the wiring holes and wire channels, and the wire body of the signal line located in the inner cavity of the wiring hole is a spring wire.

[0018] Preferably, an annular seat is fixedly connected to the outer side wall of the rotating shaft seat, a slot seat is fixedly connected to the inner side wall of the annular seat, and limiting slots are evenly provided on the inner side wall of the slot seat. An installation groove is provided on the rotating shaft of the pay-off wheel facing the hand crank, and the installation groove is a notch structure with a regular hexagonal cross-section. A movable column is movably installed in the installation groove, and a wiring groove is provided at the bottom of the installation groove. The wiring groove extends to the hand crank, and a brake handle is installed on the hand crank, and the brake line on the brake handle is arranged through the wiring groove.

[0019] Preferably, the cross-sectional dimensions of the movable column match those of the mounting slot, the inner end of the movable column is fixedly connected to a support spring, the outer end of the movable column is fixedly connected to a limiting wheel, a limiting protrusion is integrally formed on the outer side wall of the limiting wheel, the limiting protrusion is matched with the limiting slot, and the inner end face of the movable column is fixedly connected to the end of the brake line.

[0020] Preferably, when the support spring is in the reset state, the limiting protrusion is embedded in the limiting slot. When the brake handle is pressed, the brake line is subjected to force and pulls the movable column inward, and at this time, the limiting protrusion is completely disengaged from the limiting slot.

[0021] A sonar-based bored pile sediment monitoring system is used to control the above-mentioned sonar-based bored pile sediment monitoring equipment. The pressure sensor unit, resistance sensor unit, transmitting transducer, and receiving transducer are all electrically connected to the data processing and control module outside the drilling port through signal cables.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By setting up a sonar-based bored pile sediment monitoring device composed of a detection rod, a first circular plate, a second circular plate, a signal cable, a pay-off wheel, a transmitting transducer, and a receiving transducer, the height and thickness of the sediment interface in the borehole can be more accurately determined by analyzing the time difference and intensity of the signal transmission and reception of the transmitting and receiving transducers, combined with pressure and resistivity data;

[0024] 2. By configuring the detection rod to be composed of an upper rod body, a lower rod body and a connecting piece, and configuring the connecting piece to be composed of a connecting column, an upper screw, a lower screw and a screw nut, the staff can flexibly adjust the length according to different drilling depths, thereby effectively improving the flexibility of the device in practical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure at center A;

[0027] Figure 3 This is a practical application effect diagram of the present invention;

[0028] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0029] Figure 5 for Figure 3A magnified schematic diagram of the structure at point C in the middle;

[0030] Figure 6 for Figure 3 A magnified schematic diagram of the structure at D in the middle;

[0031] Figure 7 for Figure 3 A magnified schematic diagram of the structure at E in the middle;

[0032] Figure 8 A half-section view of the pay-off wheel of the present invention;

[0033] Figure 9 for Figure 8 A magnified schematic diagram of the structure at F in the middle;

[0034] Figure 10 for Figure 9 A magnified schematic diagram of the structure at G in the middle;

[0035] Figure 11 This is a schematic diagram of the distribution of the limiting protrusions of the present invention;

[0036] Figure 12 This is a schematic diagram of the connector structure of the present invention;

[0037] Figure 13 for Figure 12 Enlarged schematic diagram of the structure at H in the middle.

[0038] In the figure: detection rod 1, first circular plate 2, second circular plate 3, signal cable 4, pay-off wheel 5, transmitting transducer 6, receiving transducer 7, rotating shaft 8, rotating shaft seat 9, drilling 10, hand crank 11, upper rod body 12, lower rod body 13, connecting piece 14, connecting column 15, traction layer 16, signal line 17, connecting column 18, upper screw 19, lower screw 20, screw nut 21, wire channel 22, guide tube 25, guide rod 26, mounting groove 27, wiring groove 28, annular seat 29, slot seat 30, limiting slot 31, movable column 32, support spring 33, limiting wheel 34, limiting protrusion 35, brake line 36, brake handle 37. DETAILED DESCRIPTION

[0039] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1-13, the present invention provides the following three preferred embodiments:

[0041] Embodiment 1, a sonar-based cast-in-place pile sediment monitoring device, including a detection rod 1, a first annular plate 2, a second annular plate 3, a signal cable 4, a pay-off wheel 5, a transmitting transducer 6 and a receiving transducer 7, the detection rod 1 includes an upper rod body 12, a lower rod body 13 and a connecting piece 14, the upper rod body 12 and the lower rod body 13 are connected by the connecting piece 14, the detection rod 1 is lowered into the borehole 10 in actual use, and the first annular plate 2 is fixedly connected to the upper rod body 12. The upper rod body 12 is fixedly supported on the second circular plate 3, the lower rod body 13 is fixedly supported on the second circular plate 3, the signal cable 4 is connected to the connecting column 15 at the upper side end of the upper rod body 12, the two sides of the pay-off wheel 5 are fixedly connected with the rotating shaft 8, the end of the drill hole 10 is fixedly installed with a rotating shaft seat 9, the rotating shaft 8 is rotatably installed on the rotating shaft seat 9, and the end face of the pay-off wheel 5 is fixedly connected with a hand crank 11, the transmitting transducer 6 is fixed on the lower rod body 13, and the receiving transducer 7 is fixed on the lower rod body 13.

[0042] A conical head 37 is formed at the lower side end of the lower rod body 13, and a pressure sensor unit and a resistance sensor unit are installed on the conical head 37. By setting up a sonar bored pile sediment monitoring device composed of a detection rod 1, a first circular plate 2, a second circular plate 3, a signal cable 4, a pay-off wheel 5, a transmitting transducer 6 and a receiving transducer 7, the height and thickness of the sediment interface in the borehole 10 can be determined more accurately by analyzing the time difference and intensity of signal transmission and reception of the transmitting transducer 6 and the receiving transducer 7, and combining the pressure and resistivity data.

[0043] Embodiment 2, on the basis of embodiment 1, an upper screw hole is opened on the upper rod body 12, a lower screw hole is opened on the lower rod body 13, and the connecting member 14 includes a connecting column 18, an upper screw 19, a lower screw 20, and a screw nut 21. The upper screw 19 and the lower screw 20 are respectively integrally formed with the upper and lower end surfaces of the connecting column 18, and the screw nut 21 is integrally formed on the side wall of the connecting column 18. The thread direction of the upper screw 19 is the same as the thread direction of the lower screw 20. On the contrary, the upper screw 19 and the lower screw 20 are respectively screwed into the upper screw hole and the lower screw hole. By setting the detection rod 1 to be composed of an upper rod body 12, a lower rod body 13 and a connecting piece 14, and setting the connecting piece 14 to be composed of a connecting column 18, an upper screw 19, a lower screw 20 and a screw nut 21, the staff can flexibly adjust the length according to the depth of different drilling holes 10, thereby effectively improving the flexibility of the device in actual application.

[0044] A guide tube 25 is fixedly welded to the lower end surface of the first circular plate 2, and a guide rod 26 is fixedly welded to the upper end surface of the second circular plate 3. The guide rod 26 is arranged corresponding to the guide tube 25, and the guide rod 26 is movably arranged in the guide tube 25. Through the arrangement of the guide rod 26 and the guide tube 25, the upper screw 19 and the lower screw 20 can be adjusted synchronously when the screw nut 21 is screwed.

[0045] The signal cable 4 includes a traction layer 16 and a signal line 17 . The traction layer 16 is disposed to cover the outer end of the signal line 17 , and the lower end of the traction layer 16 is fixedly connected to the connecting post 15 .

[0046] Wiring holes are opened through the connecting column 18, the upper screw 19, and the lower screw 20. A wire channel 22 is opened on the upper rod body 12 and the lower rod body 13. The signal line 17 is set through the wiring hole and the wire channel 22. The wire body of the signal line 17 located in the inner cavity of the wiring hole is a spring wire.

[0047] Example three, on the basis of Example two, an annular seat 29 is fixedly connected to the outer side wall of the rotating shaft seat 9, a slot seat 30 is fixedly connected to the inner side wall of the annular seat 29, and a limiting slot 31 is evenly provided on the inner side wall of the slot seat 30. A mounting groove 27 is provided on the rotating shaft 8 on the side of the pay-off wheel 5 facing the hand crank 11. The mounting groove 27 is a notch structure with a regular hexagonal cross-section. A movable column 32 is movably installed in the mounting groove 27. A wiring groove 28 is provided at the bottom of the mounting groove 27. The wiring groove 28 extends to the hand crank 11. A brake handle 37 is installed on the hand crank 11. The brake line 36 on the brake handle 37 is arranged through the wiring groove 28.

[0048] The cross-sectional dimensions of the movable column 32 match those of the mounting groove 27 . The inner end of the movable column 32 is fixedly connected to a support spring 33 . The outer end of the movable column 32 is fixedly connected to a limiting wheel 34 . A limiting protrusion 35 is integrally formed on the outer wall of the limiting wheel 34 . The limiting protrusion 35 is matched with the limiting slot 31 . The inner end face of the movable column 32 is fixedly connected to the end of the brake line 36 .

[0049] When the support spring 33 is in the reset state, the limiting protrusion 35 is embedded in the limiting slot 31. When the brake handle 37 is pressed, the brake line 36 is subjected to force and pulls the movable column 32 inward. At this time, the limiting protrusion 35 is completely disengaged from the limiting slot 31. The limiting protrusion 35 is embedded in the limiting slot 31, thereby forming a locking effect on the pay-off wheel 5.

[0050] A sonar-based bored pile sediment monitoring system is used to control the above-mentioned sonar-based bored pile sediment monitoring equipment. The pressure sensor unit, the resistance sensor unit, the transmitting transducer 6, and the receiving transducer 7 are all electrically connected to the data processing and control module outside the borehole 10 port through a signal cable 4.

[0051] Although the above describes the illustrative specific embodiments of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. A sonar-based bored pile sediment monitoring device, characterized by: include: A detection rod (1), the detection rod (1) comprises an upper rod body (12), a lower rod body (13) and a connecting piece (14), the upper rod body (12) and the lower rod body (13) are connected via the connecting piece (14), and the detection rod (1) is lowered into the borehole (10) when actually used; A first annular plate (2), wherein the first annular plate (2) is fixedly connected to the upper rod body (12); A second annular plate (3), wherein the second annular plate (3) is fixedly connected to the lower rod body (13); A signal cable (4), wherein the signal cable (4) is connected to a connecting post (15) at an upper side end of the upper rod body (12); A pay-off wheel (5), wherein both sides of the pay-off wheel (5) are fixedly connected to a rotating shaft (8), a rotating shaft seat (9) is fixedly installed at the end of the drill hole (10), the rotating shaft (8) is rotatably installed on the rotating shaft seat (9), and a hand crank (11) is fixedly connected to the end surface of the pay-off wheel (5); A transmitting transducer (6), wherein the transmitting transducer (6) is fixed on the lower rod body (13); A receiving transducer (7) is fixed on the lower rod body (13).

2. The sonar-based cast-in-place pile sediment monitoring device according to claim 1 is characterized by: A conical head (37) is formed on the lower side end of the lower rod body (13), and a pressure sensor unit and a resistance sensor unit are installed on the conical head (37).

3. The sonar-based cast-in-place pile sediment monitoring device according to claim 2 is characterized in that: An upper screw hole is provided on the upper rod body (12), and a lower screw hole is provided on the lower rod body (13). The connecting member (14) includes a connecting column (18), an upper screw (19), a lower screw (20), and a screw nut (21). The upper screw (19) and the lower screw (20) are integrally formed with the upper and lower end surfaces of the connecting column (18), respectively. The screw nut (21) is integrally formed on the side wall of the connecting column (18). The thread direction of the upper screw (19) is opposite to the thread direction of the lower screw (20), and the upper screw (19) and the lower screw (20) are screwed into the upper screw hole and the lower screw hole, respectively.

4. The sonar-based cast-in-place pile sediment monitoring device according to claim 3 is characterized by: A guide tube (25) is fixedly welded to the lower end surface of the first circular plate (2), and a guide rod (26) is fixedly welded to the upper end surface of the second circular plate (3). The guide rod (26) is arranged corresponding to the guide tube (25), and the guide rod (26) is movably arranged in the guide tube (25).

5. The sonar-based bored pile sediment monitoring device according to claim 4 is characterized in that: The signal cable (4) comprises a traction layer (16) and a signal line (17); the traction layer (16) is arranged to cover the outer end of the signal line (17); and the lower end of the traction layer (16) is fixedly connected to the connecting column (15).

6. The sonar-based bored pile sediment monitoring device according to claim 5 is characterized by: The connecting column (18), the upper screw (19), and the lower screw (20) are provided with wiring holes, and the upper rod body (12) and the lower rod body (13) are provided with wire channels (22). The signal line (17) is arranged through the wiring holes and the wire channels (22). The wire body of the signal line (17) located in the inner cavity of the wiring hole is a spring wire.

7. The sonar-based bored pile sediment monitoring device according to claim 6 is characterized by: The outer side wall of the rotating shaft seat (9) is fixedly connected with an annular seat (29), the inner side wall of the annular seat (29) is fixedly connected with a slot seat (30), the inner side wall of the slot seat (30) is evenly provided with a limit slot (31), the rotating shaft (8) on the side of the pay-off wheel (5) facing the hand crank (11) is provided with a mounting slot (27), the mounting slot (27) is a notch structure with a regular hexagonal cross section, a movable column (32) is movably installed in the mounting slot (27), the bottom of the mounting slot (27) is provided with a wiring slot (28), the wiring slot (28) extends to the hand crank (11), a brake handle (37) is installed on the hand crank (11), and the brake line (36) on the brake handle (37) is arranged through the wiring slot (28).

8. The sonar-based bored pile sediment monitoring device according to claim 7 is characterized by: The cross-sectional dimensions of the movable column (32) match those of the mounting slot (27); the inner end of the movable column (32) is fixedly connected to a support spring (33); the outer end of the movable column (32) is fixedly connected to a limiting wheel (34); a limiting protrusion (35) is integrally formed on the outer wall of the limiting wheel (34); the limiting protrusion (35) is matched with the limiting slot (31); and the inner end surface of the movable column (32) is fixedly connected to the end of the brake line (36).

9. The sonar-based bored pile sediment monitoring device according to claim 8, characterized in that: When the support spring (33) is in a reset state, the limiting protrusion (35) is embedded in the limiting slot (31). When the brake handle (37) is pressed, the brake line (36) is stressed and pulls the movable column (32) inward, and at this time, the limiting protrusion (35) is completely separated from the limiting slot (31).

10. A sonar-based cast-in-place pile sediment monitoring system, characterized by: The sonar-based bored pile sediment monitoring system is used to control any one of the sonar-based bored pile sediment monitoring equipment according to claims 2-9, and the pressure sensor unit, the resistance sensor unit, the transmitting transducer (6), and the receiving transducer (7) are all electrically connected to the data processing and control module outside the borehole (10) port via a signal cable (4).

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