A three-dimensional concrete structure crack monitoring device

Abstract

The present invention proposes a three-dimensional concrete structure crack monitoring device, including a plane direction displacement monitoring component and a vertical direction displacement monitoring component. The plane direction displacement monitoring component includes an angle measuring device, a first micrometer and a connecting hole, and the vertical direction displacement monitoring component includes a second micrometer, a thimble, an automatic telescopic device, a horizontal beam, a vertical beam and a fixed base. The present invention, by monitoring the relative displacement on both sides of the structural crack, can grasp the development trend of the structural crack in real time and better determine the structural crack treatment plan.

Description

Technical Field

[0001] The invention relates to the technical field of crack monitoring, and in particular to a three-dimensional concrete structure crack monitoring device. Background Art

[0002] At present, most tunnel crack monitoring uses total stations, levels, crack meters and other equipment. Total stations and levels generally measure displacement and height difference, and the accuracy is generally 1mm. The human operation error is large, which can easily cause millimeter-level errors. The accuracy does not meet the requirements of the development and change of structural cracks. Crack meters can generally only measure the plane width of structural cracks, but cannot measure the spatial development trend of structural cracks, and cannot effectively determine the deformation cracking trend.

[0003] The use of total stations and general crack meters cannot accurately monitor the development trend of structural cracks in the short term, and cannot timely and accurately analyze the deformation cracking trend, resulting in the inability to timely and accurately determine the treatment plan. At present, most tunnel crack monitoring uses total stations, levels, crack meters and other equipment. The data measured by these devices is single, and the human operation error is large. The data collected in the short term is affected by the error and has little use value, which affects the determination of the treatment plan. In order to timely and accurately analyze the deformation cracking trend, it is necessary to conduct three-dimensional real-time monitoring of structural cracks to clarify data such as structural crack width, misalignment, and relative displacement development. Summary of the invention

[0004] The present invention proposes a three-dimensional concrete structure crack monitoring device, which includes a plane direction displacement monitoring component and a vertical direction displacement monitoring component. The specific scheme is as follows:

[0005] The plane direction displacement monitoring component includes an angle measuring device and a first micrometer, and the vertical direction displacement monitoring component includes a second micrometer, a thimble, an automatic telescopic device, a crossbeam, a vertical beam and a fixed base.

[0006] Specifically, the angle measuring device includes a fixed structure and a rotating structure, the fixed structure includes a protractor, the protractor is fixed to the first side of the structural crack by a fixing bolt, and the rotating structure includes a pointer and a movable hinge;

[0007] Specifically, the pointer, the protractor and the first micrometer are rotatably connected via a movable hinge.

[0008] Specifically, a connecting hole is provided at the other end of the first vernier caliper hinged to the pointer.

[0009] Specifically, the vertical beam is vertically fixed on the fixed base, and the other end is connected to the first end of the horizontal beam through an adjusting bolt; an automatic telescopic device is provided at the second end of the horizontal beam, one end of the second vernier caliper is connected to the automatic telescopic device, and a thimble is provided at the other end of the second vernier caliper.

[0010] Preferably, two bolt holes are provided on the fixing structure, and the fixing structure is fixed to the first side of the structural crack by bolt connection, and four bolt holes are provided on the fixing base, and the fixing base is fixed to the second side of the structural crack by bolt connection.

[0011] Further, the ejector pin contacts the concrete surface on the first side of the structural crack through the connecting hole.

[0012] Preferably, the accuracy of the angle measuring device is 2".

[0013] Preferably, the accuracy of the first vernier caliper and the second vernier caliper is 0.02 mm.

[0014] Furthermore, the second micrometer is arranged perpendicular to the crossbeam.

[0015] Preferably, a first level bubble is provided on the first vernier caliper for leveling the first vernier caliper when setting the planar direction displacement monitoring component.

[0016] Preferably, a second level bubble is provided on the crossbeam for adjusting the second vernier caliper so that the second vernier caliper remains perpendicular to the ground when measuring ground fissures.

[0017] Preferably, the vertical displacement monitoring component also includes a plane adjustment device, which is arranged at the connection between the vertical beam and the horizontal beam, and includes a plane adjuster for adjusting the plane direction of the horizontal beam and a vertical adjuster for adjusting the vertical direction of the horizontal beam.

[0018] Specifically, the vertical adjustment bolt is combined with the plane bubble to realize the second micrometer being perpendicular to the ground, and the top needle can be aligned with the connecting hole through the plane adjustment bolt.

[0019] Furthermore, the automatic telescopic device includes a spring for keeping the ejector pin in contact with the concrete surface.

[0020] The present invention monitors the displacement of the structural crack in the plane direction by a plane displacement monitoring component and monitors the displacement in the vertical direction by a vertical displacement monitoring component, thereby monitoring the three-dimensional spatial changes of the structural crack. The accuracy is higher, the human operation error is extremely small, the cracking trend is better monitored in real time, and a basis is provided for the treatment of the structural cracks.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a three-dimensional structural crack monitoring device;

[0024] Among them, 1-angle measuring device, 101-pointer, 102-movable hinge, 103-fixing bolt, 2-first vernier, 201-connecting hole, 202-first level bubble, 3-second vernier, 301-thimble, 4-automatic telescopic device, 5-cross beam, 501-second level bubble, 6-vertical beam, 601-plane adjuster, 602-vertical adjuster, 7-fixed base. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0026] like Figure 1 As shown, a three-dimensional concrete structure crack monitoring device includes a plane direction displacement monitoring component and a vertical direction displacement monitoring component. The plane direction displacement monitoring component includes an angle measuring device 1 and a first micrometer 2, and the vertical direction displacement monitoring component includes a second micrometer 3, a pin 301, an automatic telescopic device 4, a horizontal beam 5, a vertical beam 6 and a fixed base 7.

[0027] The angle measuring device 1 includes a fixed structure and a rotating structure, the fixed structure includes a protractor, the protractor is fixed to the first side of the structural crack by a fixing bolt 103, and the rotating structure includes a pointer 101 and a movable hinge 102;

[0028] The pointer 101 , the protractor and the first micrometer 2 are rotatably connected via a movable hinge 102 .

[0029] The other end of the first micrometer 2 hinged to the pointer 101 is provided with a connecting hole 201 .

[0030] The fixed base 7 is fixed to the second side of the structural crack by a fixing bolt 103, the vertical beam 6 is vertically fixed on the fixed base 7, and the other end is connected to the first end of the horizontal beam 5 by an adjusting bolt; an automatic telescopic device 4 is set at the second end of the horizontal beam 5, one end of the second vernier 3 is connected to the automatic telescopic device 4, and a ejector pin 301 is set at the other end of the second vernier 3.

[0031] Furthermore, the ejector pin 301 matches the connection hole 201 , and the ejector pin 301 contacts the concrete surface through the connection hole 201 , thereby completing the positioning of both sides of the crack.

[0032] Preferably, the accuracy of the angle measuring device 1 is 2″.

[0033] Preferably, the accuracy of the first micrometer 2 and the second micrometer 3 is 0.02 mm.

[0034] Preferably, a first level bubble 202 is provided on the first micrometer 2 for leveling the first micrometer 2 when setting the plane direction displacement monitoring component.

[0035] Preferably, a second level bubble 501 is provided on the crossbeam 5 to adjust the second micrometer 3 so that the second micrometer 3 remains perpendicular to the ground when monitoring structural cracks located on the ground.

[0036] Furthermore, the vertical displacement monitoring component includes a plane adjustment device, which is arranged at the connection between the vertical beam 6 and the horizontal beam 5, and includes a plane adjuster 601 for adjusting the plane direction of the horizontal beam 5 and a vertical adjuster 602 for adjusting the vertical direction of the horizontal beam 5.

[0037] Preferably, in this embodiment, adjusting bolts are selected as the plane adjuster 601 and the vertical adjuster 602 .

[0038] The specific leveling method of the plane adjustment device using the adjustment bolt is as follows:

[0039] The plane adjustment bolts are set on the vertical beams. The horizontal beams can be rotated in the plane direction by loosening the bolts. The vertical adjustment bolts are set at the connection between the horizontal beam 5 and the vertical beam 6. The horizontal beam 5 can be rotated in the vertical direction by loosening the bolts. At this time, the horizontal beam 5 is adjusted in the vertical direction so that the horizontal beam 5 is parallel to the plane where the structural crack is located. The horizontal beam 5 is then rotated in the plane to install the ejector pin 301 into the connecting hole 201, and the bolts are tightened to complete the fixed connection between the horizontal beam 5 and the vertical beam 6.

[0040] It should be noted that the significance of the plane adjustment device is that it can adjust the position of the crossbeam 5 so as to achieve that the second micrometer 3 is perpendicular to the concrete surface and the ejector pin 301 passes through the connecting hole 201 and contacts the concrete surface.

[0041] Specifically, the vertical adjustment bolt adjusts the second micrometer 3 to be vertical to the concrete surface, and then the plane adjustment bolt is used to align the ejector pin 301 with the connection hole 201 .

[0042] Furthermore, the automatic telescopic device 4 includes a spring for keeping the ejector pin 301 in contact with the concrete surface.

[0043] A three-dimensional concrete structure crack monitoring device provided in this embodiment monitors the displacement of the structural crack in the plane direction through a plane displacement monitoring component and monitors the displacement in the vertical direction through a vertical displacement monitoring component, so as to timely and accurately monitor the deformation and cracking trend of the structural crack, and clarify data such as the width, misalignment, and relative displacement development of the structural crack.

[0044] In order to better illustrate the purpose of this embodiment, the specific implementation of this embodiment will be described in detail below:

[0045] Grind both sides of the structural crack flat, drive fixing bolts 103 into the concrete at about 30 cm on one side of the structural crack, install the fixing structure of the angle measuring device 1 into the bolts and tighten them with nuts, and drive expansion bolts into the other side of the structural crack at about 15 cm to fix the vertical displacement monitoring component to the concrete surface.

[0046] It should be noted that the above distance is not fixed, but is determined according to the specifications of the device. The purpose is to align the connecting hole 201 on the first micrometer 2 and the ejector pin 301 on the second micrometer 3. The above spacing distance is determined according to the specifications of the micrometer in this embodiment.

[0047] When monitoring structural cracks, this embodiment can accurately measure the relative displacement on both sides of the crack.

[0048] The specific monitoring methods are as follows:

[0049] Use the plane adjustment device to level the beam 5, rotate and stretch the first micrometer 2 to align the connection hole 201 with the ejector pin 301, and install the ejector pin 301 into the connection hole 201. After the equipment is installed, record the initial reading of the angle measuring device 1, the initial reading of the first micrometer 2, and the initial reading of the second micrometer 3. When checking the development of the structural crack, you only need to read the reading of the angle measuring device 1, the reading of the first micrometer 2, and the reading of the second micrometer 3.

[0050] The method for calculating the displacement status of structural cracks is to calculate the plane displacement by the difference between the front and back readings of the first micrometer 2 and the front and back readings of the angle measuring device 1, and the vertical displacement by the difference between the front and back readings of the second micrometer 3.

[0051] The calculation formula for plane displacement is as follows:

[0052] X=(K+X 2 )*cosθ-(K+X 1 ), Y=(K+X 2 )*sinθ;

[0053] Where X is the displacement in the x direction; Y is the displacement in the y direction; θ is the difference between the front and back readings of the angle measuring device 1; X 1 is the initial reading of the first micrometer 2; X 2 is the reading of the first micrometer 2 during monitoring; K is the distance between the movable hinge and the connecting hole when the reading of the first micrometer 2 is 0.

[0054] The cracking trend of the structure can be obtained by judging the positive and negative value of the displacement and the magnitude of the absolute value of the displacement.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-dimensional concrete structure crack monitoring device, characterized in that: It comprises a planar displacement monitoring component and a vertical displacement monitoring component, wherein the planar displacement monitoring component comprises an angle measuring device (1) and a first micrometer (2), and the vertical displacement monitoring component comprises a second micrometer (3), an automatic telescopic device (4), a horizontal beam (5), a vertical beam (6) and a fixed base (7); The angle measuring device (1) comprises a fixed structure and a rotating structure, wherein the fixed structure is detachably arranged on a first side of a structural crack, and the rotating structure comprises a pointer (101) and a movable hinge (102); The fixed structure and the first micrometer (2) are rotatably connected via a movable hinge (102), and the pointer (101) is connected to the first micrometer (2); The other end of the first micrometer (2) connected to the pointer (101) is provided with a connecting hole (201); The fixed base (7) is detachably arranged on the second side of the structural crack, the vertical beam (6) is vertically fixed on the fixed base (7), and the other end is connected to the first end of the horizontal beam (5); the second end of the horizontal beam (5) is provided with an automatic telescopic device (4), one end of the second micrometer (3) is connected to the automatic telescopic device (4), and the other end of the second micrometer (3) is provided with a thimble (301); The ejector pin (301) passes through the connection hole (201) and contacts the concrete surface on the first side of the structural crack.

2. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: The accuracy of the angle measuring device (1) is 2″.

3. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: The accuracy of the first vernier ruler (2) and the second vernier ruler (3) is 0.02 mm.

4. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: Two bolt holes are arranged on the fixing structure, and the fixing structure is fixed to the first side of the structural crack by bolt connection. Four bolt holes are arranged on the fixing base (7), and the fixing base (7) is fixed to the second side of the structural crack by bolt connection.

5. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: The second micrometer (3) is arranged perpendicular to the crossbeam (5).

6. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: A first level bubble (201) is arranged on the first micrometer (2), and a second level bubble (501) is arranged on the crossbeam (5).

7. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: The vertical displacement monitoring assembly also includes a plane adjustment device, which is arranged at the connection between the vertical beam (6) and the horizontal beam (5), and includes a plane adjuster (601) for adjusting the plane direction of the horizontal beam (5) and a vertical adjuster (602) for adjusting the vertical direction of the horizontal beam (5).

8. The three-dimensional concrete structure crack monitoring device according to claim 1 is characterized in that: The automatic telescopic device (4) comprises a spring for keeping the ejector pin (301) in contact with the ground.

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