CN107525461B - Tunnel deformation measuring device and tunnel structure - Google Patents
Tunnel deformation measuring device and tunnel structure Download PDFInfo
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- CN107525461B CN107525461B CN201710944545.1A CN201710944545A CN107525461B CN 107525461 B CN107525461 B CN 107525461B CN 201710944545 A CN201710944545 A CN 201710944545A CN 107525461 B CN107525461 B CN 107525461B
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- 238000005259 measurement Methods 0.000 claims abstract description 13
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- 238000000034 method Methods 0.000 description 11
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- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 2
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- 239000011810 insulating material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
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- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/22—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in capacitance
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention provides a tunnel deformation measuring device and a tunnel structure, and belongs to the technical field of tunnel deformation measurement. Tunnel deformation measuring device comprising a terminal device and a terminal device and a plurality of angle sensors electrically connected with the terminal equipment. An angle sensor is correspondingly arranged at a connecting joint and is used for detecting that the relative rotation angle between two adjacent arc segments is converted into an electric signal, and the terminal equipment is used for receiving the electric signal and processing the electric signal so as to obtain the deformation of the tunnel pipe ring. The detection device can detect the tunnel rapidly and efficiently, and can be suitable for severe environments.
Description
Technical Field
The invention relates to the technical field of tunnel deformation measurement, in particular to a tunnel deformation measurement device and a tunnel structure.
Background
With the development of urban economy, the shield method has gradually become one of the main forms in the fields of traffic, pollution discharge and the like, and the specific gravity is increasingly greater. In the designed service life of the shield tunnel, the healthy service of the shield tunnel is critical to the normal operation of the city, and the most main mode for evaluating the health condition of the shield tunnel is on-site monitoring.
Most of the existing shield tunnel monitoring is in a traditional monitoring mode, namely, deformation measurement is carried out by manually holding a traditional monitoring instrument to the site, a great amount of manpower and financial resources are consumed, and the efficiency is low; in addition, in the fields of pollution discharge and the like, the traditional monitoring mode is difficult to implement.
Disclosure of Invention
The invention aims to provide a tunnel deformation measuring device, which is used for solving the problem that the traditional measuring mode is low in efficiency.
The invention aims to provide a tunnel structure so as to solve the problem that the traditional measuring mode is low in efficiency.
The invention is realized in the following way:
based on the first object, the present invention provides a tunnel deformation measuring device, which is used for measuring deformation of a tunnel pipe ring, wherein the tunnel pipe ring comprises a plurality of arc segments, and a connecting seam is formed between two adjacent arc segments, and the tunnel pipe ring comprises a terminal device and a plurality of angle sensors electrically connected with the terminal device;
an angle sensor is correspondingly arranged at a connecting joint and is used for detecting that the relative rotation angle between two adjacent arc segments is converted into an electric signal, and the terminal equipment is used for receiving the electric signal and processing the electric signal so as to obtain the deformation of the tunnel pipe ring.
Further, the terminal equipment comprises a data processing device and a data acquisition device, all the angle sensors are electrically connected with the data acquisition device, the data acquisition device is electrically connected with the data processing device, the data acquisition device is used for receiving the electric signal and converting the electric signal into an angle signal, and the data processing device is used for receiving the angle signal and converting the angle signal into a displacement signal.
Further, two adjacent arc segments are respectively a first arc segment and a second arc segment;
the angle sensor comprises a first rotating body and a second rotating body, the first rotating body is rotationally connected with the second rotating body, the first rotating body is connected with the first arc tube piece, and the second rotating body is connected with the second arc tube piece;
the first rotating body comprises a first arc part electrically connected with the terminal equipment, the second rotating body comprises a second arc part electrically connected with the terminal equipment and coaxially arranged with the first arc part, the first arc part is positioned on the inner side of the second arc part, and the relative rotation of the first rotating body and the second rotating body can change the size of the overlapping part of the first arc part and the second arc part.
Further, the angle sensor further comprises a rotating shaft;
the first rotor still includes first connecting portion, and first circular arc portion is fixed in first connecting portion, and the second rotor still includes second connecting portion, and second circular arc portion is fixed in second connecting portion, and the outside of pivot is all located to first connecting portion and second connecting portion cover.
Further, the first connecting portion and the second connecting portion are both fan-shaped.
Further, the method comprises the steps of, the first arc part and the second arc part are both semi-ring structures.
Further, the angle sensor is in sliding connection with the first arc tube piece, the angle sensor is in sliding connection with the second arc tube piece, and when the first arc tube piece and the second arc tube piece rotate relatively, the angle sensor can slide relatively to the first arc tube piece and the second arc tube piece.
Further, the first rotating body is connected with the first arc tube piece through a first connecting component, the first connecting component comprises a first outer tube and a first connecting rod, the first outer tube is fixedly connected with the first arc tube piece, one end of the first connecting rod is connected with the first rotating body, the other end of the first connecting rod extends into the first outer tube, and the first connecting rod can axially slide relative to the first outer tube;
the second rotating body is connected with the second arc tube piece through a second connecting component, the second connecting component comprises a second outer tube and a second connecting rod, the second outer tube is fixedly connected with the second arc tube piece, one end of the second connecting rod is connected with the second rotating body, the other end of the second connecting rod extends into the second outer tube, and the second connecting rod can axially slide relative to the second outer tube.
Further, the first arc tube piece is provided with a first end face, the second arc tube piece is provided with a second end face, and a connecting seam is formed between the first end face and the second end face;
the sliding direction of the first connecting rod relative to the first outer tube is perpendicular to the first end face, and the sliding direction of the second connecting rod relative to the second outer tube is perpendicular to the second end face.
Based on the second object, the present invention provides a tunnel structure, which comprises a plurality of tunnel pipe rings and the tunnel deformation measuring device, wherein at least one tunnel pipe ring is provided with the tunnel deformation measuring device.
The beneficial effects of the invention are as follows:
the invention provides a tunnel deformation measuring device, wherein an angle sensor is arranged at the back of a connecting joint between two circular arc tube sheets, the angle sensor can detect the relative rotation angle between two adjacent circular arc tube sheets to be converted into an electric signal, and the electric signal is processed by a terminal device to obtain the deformation of a tunnel tube ring so as to achieve the purpose of detecting the tunnel deformation. The detection device can detect the tunnel rapidly and efficiently, and can be suitable for severe environments.
The invention provides a tunnel structure, which comprises the tunnel deformation measuring device, and can perform fixed-point detection on a tunnel so as to determine the deformation condition of the whole tunnel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a measurement schematic diagram of a tunnel deformation measurement device according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of the angle sensor shown in FIG. 1;
FIG. 3 is a schematic view of the first rotor shown in FIG. 2;
FIG. 4 is a schematic view of the second rotor shown in FIG. 2;
fig. 5 is a schematic diagram showing connection between the angle sensor shown in fig. 1 and the first and second circular arc segments.
FIG. 6 is a diagram showing an example of calculation of a tunnel pipe ring by the tunnel deformation measuring apparatus according to embodiment 1 of the present invention;
fig. 7 is a diagram illustrating an example of calculation of a circular arc segment by the tunnel deformation measurement device according to embodiment 1 of the present invention;
fig. 8 is a diagram showing an example of calculation of the tunnel deformation measuring device according to embodiment 1 of the present invention before and after deformation of the tunnel pipe ring.
Icon: 100-tunnel deformation detection device; 10-tunnel pipe ring; 11-arc segment; 12-connecting joints; 13-a first arc segment; 131-a first end face; 14-a second arc segment; 141-a second end face; 20-terminal equipment; 21-a data acquisition device; 22-data processing means; 30-an angle sensor; 31-a first rotor; 311-a first arc part; 312-first connection portion; 32-a second rotor; 321-a second arc part; 322-a second connection; 33-rotating shaft; 40-a first connection assembly; 41-a first outer tube; 42-a first connecting rod; 50-a second connection assembly; 51-a second outer tube; 52-second connecting rod.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in use of the product of the present invention as understood by those skilled in the art, merely for convenience of describing the present invention and simplifying the description, and is not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for understanding as indicating or implying a relative importance.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
The present embodiment provides a tunnel deformation detection device 100 that detects the deformation amount of a tunnel pipe ring 10. In actual construction, the tunnel is formed by connecting a plurality of tunnel pipe rings 10 in series, and of course, the tunnel pipe rings 10 are also formed by a plurality of units.
As shown in fig. 1, the tunnel pipe ring 10 includes a plurality of circular arc segments 11, and the circular arc segments 11 are sector-shaped. All the arc segments 11 are connected end to form a whole circle. Of course, in the actual construction process, a certain gap needs to be left between two circular arc segments 11, and the gap is the connecting seam 12 between two adjacent circular arc segments 11, that is, a plurality of connecting seams 12 will be formed on the whole tunnel pipe ring 10.
The tunnel may be deformed during its lifetime, which is the deformation of the tunnel pipe ring 10. The inventors have found in practice that the deformation of the tunnel pipe ring 10 is actually caused by the relative rotation between two adjacent pipe rings. Therefore, the tunnel can be intuitively and rapidly detected by converting the rotation angle between two adjacent pipe rings into the deformation displacement of the tunnel pipe ring 10.
The tunnel deformation detection apparatus 100 provided in the present embodiment includes a terminal device 20 and a plurality of angle sensors 30, all of which angle sensors 30 are electrically coupled with the terminal device 20. An angle sensor 30 is disposed at a connecting joint 12, the angle sensor 30 is used for detecting that the relative rotation angle between two adjacent arc segments 11 is converted into an electrical signal, and the terminal device 20 is used for receiving the electrical signal and processing the electrical signal to obtain the deformation amount of the tunnel pipe ring 10.
As shown in fig. 2, the angle sensor 30 includes a first rotating body 31, a second rotating body 32, and a rotating shaft 33, and the first rotating body 31 and the second rotating body 32 are rotatably connected by the rotating shaft 33.
As shown in fig. 3, the first rotating body 31 includes a first arc portion 311 and a first connecting portion 312. The first connection portion 312 is made of an insulating material. The first connecting portion 312 has a fan-shaped structure, the central angle of the first connecting portion 312 is 180 degrees, and the circumferential profile of the first connecting portion 312 is formed by a first arc surface and a first plane. The first arc portion 311 is made of metal. The first arc part 311 has a half-ring structure, that is, a fan ring with a central angle of 180 degrees, and the outer diameter of the first arc part 311 is identical to the diameter of the first connection part 312. The first arc portion 311 is fixed on one axial end surface of the first connecting portion 312, the first arc portion 311 and the first connecting portion 312 are coaxially arranged, and two ends of the first arc portion 311 are flush with the first plane.
As shown in fig. 4, the second rotor 32 includes a second arc 321 and a second connection 322. The second connection portion 322 is made of an insulating material. The second connecting portion 322 has a fan-shaped structure, the central angle of the second connecting portion 322 is 180 degrees, and the circumferential profile of the second connecting portion 322 is composed of a second arc surface and a second plane. The second arc portion 321 is made of metal. The second arc portion 321 is a half-ring structure, that is, it is a fan ring with a central angle of 180 degrees, the outer diameter of the second arc portion 321 is identical to the diameter of the second connecting portion 322, and the inner diameter of the second arc portion 321 is larger than the outer diameter of the first arc portion 311. The second arc portion 321 is fixed on one axial end surface of the second connecting portion 322, the second arc portion 321 and the second connecting portion 322 are coaxially arranged, and two ends of the second arc portion 321 are flush with the second plane.
As shown in fig. 2, the first connecting portion 312 of the first rotating body 31 is sleeved outside the rotating shaft 33, and the second connecting portion 322 of the second rotating body 32 is sleeved outside the rotating shaft 33. After the first rotating body 31 and the second rotating body 32 are connected by the rotating shaft 33, the first arc portion 311 of the first rotating body 31 and the second arc portion 321 of the second rotating body 32 are coaxially arranged, the first arc portion 311 is positioned inside the second arc portion 321, and the first arc portion 311 and the second arc portion 321 are partially overlapped. When the first rotating body 31 rotates relative to the second rotating body 32, the overlapping portion of the first arc portion 311 and the second arc portion 321 increases or decreases. The overlapping portions of the first arc portion 311 and the second arc portion 321 form a capacitor, and when the size of the overlapping portion of the first arc portion 311 and the second arc portion 321 changes, the size of the capacitor changes.
In this embodiment, for convenience of description, two adjacent segments are defined as a first circular arc segment 13 and a second circular arc segment 14, respectively. When the first rotor 31 is connected to the first arc segment 13, and the second rotor 32 is connected to the second arc segment 14, the relative rotation angle between the first arc segment 13 and the second arc segment 14 can be obtained according to the size of the portion where the first arc portion 311 and the second arc portion 321 overlap.
However, when the tunnel pipe ring 10 is deformed, the rotational axes of the first circular arc segment 13 and the second circular arc segment 14 may not coincide with the axis of the rotating shaft 33 in the angle sensor 30. When the rotation axes of the first arc segment 13 and the second arc segment 14 are offset from the axis of the rotating shaft 33, the first arc segment 13 and the second arc segment 14 will generate a tensile force to the angle sensor 30 during the relative rotation process, so that the first rotating body 31 and the second rotating body 32 are subjected to opposite forces, resulting in the damage of the sensor.
In this embodiment, therefore, the first and second embodiments, the angle sensor 30 is slidably connected to the first circular arc segment 13 and the second circular arc segment 14.
Specifically, as shown in fig. 5, the first circular arc segment 13 has a first end face 131, the second circular arc segment 14 has a second end face 141, and the first end face 131 and the second end face 141 form a connecting joint 12. A first connecting component 40 is arranged between the angle sensor 30 and the first arc segment 13. The first connection assembly 40 includes a first outer tube 41 and a first connection rod 42, and an inner diameter of the first outer tube 41 is matched with a diameter of the first connection rod 42. The first outer tube 41 is inserted into the first circular arc segment 13 from the first end face 131, and the first outer tube 41 and the first circular arc segment 13 are fixed in a concrete pouring manner, and the first outer tube 41 is perpendicular to the first end face 131. One end of the first connecting rod 42 is inserted into the first outer tube 41, the first connecting rod 42 and the first outer tube 41 form sliding connection, the other end of the first connecting rod 42 is fixed with one end of the first arc portion 311 of the first rotating body 31, and the axis of the first connecting rod 42 intersects with the axis of the first arc portion 311. When the first connecting rod 42 slides relative to the first outer tube 41, the entire angle sensor 30 will move relative to the first circular arc segment 13. The direction in which the first connecting rod 42 slides with respect to the first outer tube 41 is perpendicular to the first end face 131. A second connection assembly 50 is provided between the angle sensor 30 and the second arcuate segment 14. The second connecting assembly 50 comprises a second outer tube 51 and a second connecting rod 52, wherein the inner diameter of the second outer tube 51 is matched with the diameter of the second connecting rod 52, the second outer tube 51 is inserted into the second circular arc tube piece 14 from the second end face 141, the second outer tube 51 and the second circular arc tube piece 14 are fixed in a concrete pouring mode, and the second outer tube 51 is perpendicular to the second end face 141. One end of the second connecting rod 52 is inserted into the second outer tube 51, the second connecting rod 52 and the second outer tube 51 form a sliding connection, the other end of the second connecting rod 52 and the middle position of the second circular arc portion 321 of the second rotating body 32, and the axis of the second connecting rod 52 intersects with the axis of the second circular arc portion 321. When the second link slides relative to the second outer tube 51, the entire angle sensor 30 will move relative to the second arcuate segment 14. The direction in which the second link slides relative to the second outer tube 51 is perpendicular to the first end face 131.
When the axis of the relative rotation of the first arc segment 13 and the second arc segment 14 is not coincident with the axis of the rotating shaft 33 in the angle sensor 30, the angle sensor 30 is slidably connected with the first arc segment 13, and the angle sensor 30 is slidably connected with the second arc segment 14, so that the first arc segment 13 and the second arc segment 14 cannot generate tensile force to the angle sensor 30 in the rotation process of the first arc segment 13 and the second arc segment 14, the accuracy of angle measurement of the angle sensor 30 is ensured, and the damage of the angle sensor 30 is effectively avoided.
In this embodiment, the terminal device 20 includes a data acquisition device 21 and a data processing device 22, and the data processing device 22 is a computer. The first arc portion 311 and the second arc portion 321 in all the angle sensors 30 are electrically connected to the data acquisition device 21, and the data acquisition device 21 is electrically connected to the data processing device 22. When the tunnel pipe ring 10 is deformed, the two adjacent arc segments 11 will rotate, the angle sensor 30 converts the angle of the mutual rotation of the two adjacent arc segments 11 into an electrical signal, the data acquisition device 21 receives the electrical signals transmitted by the angle sensors 30 and converts the electrical signals into angle signals, and the data processing device 22 receives the angle signals and converts the angle signals into displacement signals.
The process of converting the angle signal into the displacement signal is specifically as follows:
as shown in fig. 6, the radius of the tunnel pipe ring 10 is R, and the central angles corresponding to the pipe pieces are β in turn 1 、β 2 、β 3 ...β n-1 、β n The chord length corresponding to each segment is L in turn 1 、L 2 、L 3 ...L n-1 、L n The rotation angles measured by the angle sensors 30 are dα in sequence 1 、dα 2 、dα 3 ...dα n-1 、dα n N is 8.
And (3) taking the center of the tunnel as a coordinate origin (0, 0), taking the vertical downward direction as an x axis, and taking the horizontal right direction as a y axis in the drawing to establish a rectangular coordinate system.
The positions of the angle sensors before deformation are located on the same circumference, and the coordinates of the angle sensors can be respectively expressed as follows:
angle sensor 1:
the angle sensor 2:
angle sensor 3:
...
angle sensor n-2:
angle sensor n-1:
angle sensor n:
the analytical equation for the circle formed by the tunnel ring 10 before deformation is: ### 2 +y 2 ＝R 2 ；
The initial horizontal width is 2R, and the initial top plate height is 2R;
because the arc tube pieces 11 only displace after the tunnel is deformed, and the shape of the arc tube pieces 11 is not changed, the axial radius of each arc tube piece 11 in the deformed lining tunnel tube ring 10 is still R, and the coordinates of each joint after deformation can be obtained through geometric calculation, which is as follows:
angle sensor 1:
the angle sensor 2:
angle sensor 3:
...
angle sensor (n-2):
angle sensor (n-1):
angle sensor n:
the deformed tunnel pipe ring 10 is a closed curve formed by connecting a plurality of circular arcs with the radius of R, the joint positions are circular arc connecting points, the analytical equation of each circular arc segment 11 can be determined by the joint coordinates of the two ends and the radius of R, which are obtained after deformation, and the process is as follows:
(1) And determining an analytical equation after the axis of each circular arc segment 11 is deformed. The G1 analytical equation is still x 2 +y 2 ＝R 2 (x 1 (x 2 )≤x<R,y n ≤y<y 1 ) The method comprises the steps of carrying out a first treatment on the surface of the G2 solutionSolving an equation: as shown in FIG. 7, the coordinates of C areThe slope k of the OC wire is +.> From FIG. 7, the center of circle O after deformation can be found 1 Is thatKnowing the circle center and the radius, the G2 analytic equation after deformation is obtained as follows:
(x 3 ≤x<x 2 ,y 2 ≤y<y 3 ). Analytical equations for G3, G4.. Gn-2, gn-1, gn can be found in the same manner. The analytical equation of the deformed tunnel pipe ring 10 is finally obtained and consists of n arc analytical equation segments.
(2) And determining the relative distance between the deformation front and rear horizontal and vertical directions of each position. As shown in fig. 8, the tunnel pipe rings 10 before and after deformation are closed curves, that is, the lower half point (vertical clear distance) and the right half point (horizontal clear distance) in the figure are taken as y and x reference points respectively, and for the analytical equations of the closed curves, two y (x values) corresponding to the x (y) values can be obtained within the x and y value ranges (except for the end points), and the absolute values of differences between the two y (x) values at each position before and after deformation are obtained respectively. Obtaining x before deformation of j point (relative to lining structure) in horizontal direction j Corresponding to two y values y j 、y k Then, the clear distance of the j position before deformation is calculated as |y j -y k I, j point position clear distance after deformation is i y j1 -y k1 The absolute distance of the i position before deformation of the i point (relative to the lining structure) in the vertical direction can be obtained by the same method as the absolute distance of the i position before deformation of the i point in the vertical direction is |y i -y m I, i point position clear distance after deformation is|y i1 -y m1 | a. The invention relates to a method for producing a fibre-reinforced plastic composite. The same applies to the horizontal and vertical clear distances before and after deformation of other points.
(3) And respectively making differences before and after deformation of each point in the horizontal direction and the vertical direction, and respectively taking the maximum value as the maximum convergence quantity in the horizontal direction and the maximum settlement quantity in the vertical direction of the tunnel. The convergence amount of the horizontal direction of the j position is |y j -y k |-|y j1 -y k1 I, i position vertical direction sinking amount is y i -y m |-|y i1 -y m1 The deformation amount of other points in the horizontal direction and the vertical direction before and after deformation can be obtained by the same method; and then finding out the maximum values in the two directions as the maximum convergence amount in the horizontal direction and the maximum settlement amount in the vertical direction of the tunnel respectively.
After the formulas related in the process are stored in the data processing device 22, the maximum convergence amount (displacement signal) in the horizontal direction and the maximum settlement amount (displacement signal) in the vertical direction of the tunnel can be finally obtained through the angle signals provided by the data acquisition device 21, so that the detection of the tunnel is realized.
The tunnel deformation detection device 100 provided in this embodiment can efficiently detect a tunnel, and is applicable to a severe environment.
In the present embodiment, the angle sensor 30 is a capacitive sensor. The angle sensor 30 is composed of a first rotating body 31, a second rotating body 32 and a rotating shaft 33, and after the first rotating body 31 and the second rotating body 32 are connected through the rotating shaft 33, the rotating accuracy of the first rotating body 31 and the second rotating body 32 can be ensured, and the measuring accuracy is ensured.
Example 2
The present embodiment provides a tunnel structure including a plurality of tunnel pipe rings 10 and the tunnel deformation measuring device in the above embodiment, at least one tunnel pipe ring 10 being provided with the tunnel deformation measuring device. All tunnel pipe rings 10 are connected in series.
In this embodiment, a tunnel deformation measurement device is configured in every three tunnel pipe rings 10 to implement vertex detection on the tunnel, so as to determine deformation of the whole tunnel.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The tunnel deformation measuring device is used for measuring the deformation of a tunnel pipe ring, and the tunnel pipe ring comprises a plurality of arc pipe pieces, and a connecting joint is formed between two adjacent arc pipe pieces;
an angle sensor is correspondingly arranged at one connecting joint and is used for detecting the relative rotation angle between two adjacent arc segments and converting the relative rotation angle into an electric signal, and the terminal equipment is used for receiving the electric signal and processing the electric signal so as to obtain the deformation of the tunnel pipe ring;
the two adjacent arc segments are respectively a first arc segment and a second arc segment;
the angle sensor comprises a first rotating body and a second rotating body, the first rotating body is rotationally connected with the second rotating body, the first rotating body is connected with the first arc tube piece, and the second rotating body is connected with the second arc tube piece;
the first rotating body comprises a first arc part electrically connected with the terminal equipment, the second rotating body comprises a second arc part electrically connected with the terminal equipment and coaxially arranged with the first arc part, the first arc part is positioned at the inner side of the second arc part, and the relative rotation of the first rotating body and the second rotating body can change the size of the overlapping part of the first arc part and the second arc part;
the angle sensor further comprises a rotating shaft; the first rotating body further comprises a first connecting part, the first arc part is fixed on the first connecting part, the second rotating body further comprises a second connecting part, the second arc part is fixed on the second connecting part, and the first connecting part and the second connecting part are sleeved on the outer side of the rotating shaft;
the angle sensor is in sliding connection with the first circular arc tube piece, the angle sensor is in sliding connection with the second circular arc tube piece, and when the first circular arc tube piece and the second circular arc tube piece rotate relatively, the angle sensor can slide relatively to the first circular arc tube piece and the second circular arc tube piece;
the first rotating body is connected with the first arc tube piece through a first connecting component, the first connecting component comprises a first outer tube and a first connecting rod, the first outer tube is fixedly connected with the first arc tube piece, one end of the first connecting rod is connected with the first rotating body, the other end of the first connecting rod extends into the first outer tube, and the first connecting rod can axially slide relative to the first outer tube;
the second rotating body is connected with the second circular arc duct piece through a second connecting component, the second connecting component comprises a second outer tube and a second connecting rod, the second outer tube is fixedly connected with the second circular arc duct piece, one end of the second connecting rod is connected with the second rotating body, the other end of the second connecting rod extends into the second outer tube, and the second connecting rod can axially slide relative to the second outer tube.
2. The tunnel deformation measurement device according to claim 1, wherein the terminal equipment comprises a data processing device and a data acquisition device, all the angle sensors are electrically connected with the data acquisition device, the data acquisition device is electrically connected with the data processing device, the data acquisition device is used for receiving the electric signals and converting the electric signals into angle signals, and the data processing device is used for receiving the angle signals and converting the angle signals into displacement signals.
3. The tunnel deformation measurement device according to claim 1, wherein the first connection portion and the second connection portion are each sector-shaped.
4. The tunnel deformation measurement device according to claim 1, wherein the first circular arc portion and the second circular arc portion are each of a half-ring structure.
5. The tunnel deformation measurement device according to claim 1, wherein the first circular arc segment has a first end face, the second circular arc segment has a second end face, and the connecting seam is formed between the first end face and the second end face;
the sliding direction of the first connecting rod relative to the first outer tube is perpendicular to the first end face, and the sliding direction of the second connecting rod relative to the second outer tube is perpendicular to the second end face.
6. A tunnel structure comprising a plurality of tunnel pipe rings and the tunnel deformation measuring device according to any one of claims 1 to 5, at least one of the tunnel pipe rings having the tunnel deformation measuring device disposed therein.
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| CN110242351A (en) * | 2019-05-30 | 2019-09-17 | 上海工程技术大学 | A kind of tunnel structure rotational angle of joint displacement sensing device |
| CN110939457B (en) * | 2019-12-25 | 2021-04-27 | 兰州理工大学 | Inflatable seismic isolation and reduction tunnel lining structure and construction method |
| CN114322747A (en) * | 2022-01-19 | 2022-04-12 | 范绍木 | Air pipe detection method and detection equipment in tunnel construction |
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