CN116026281A - Concrete strain gauge mounting device with protection function and construction method thereof - Google Patents
Concrete strain gauge mounting device with protection function and construction method thereof Download PDFInfo
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- CN116026281A CN116026281A CN202310324487.8A CN202310324487A CN116026281A CN 116026281 A CN116026281 A CN 116026281A CN 202310324487 A CN202310324487 A CN 202310324487A CN 116026281 A CN116026281 A CN 116026281A
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- 238000010276 construction Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 128
- 239000010959 steel Substances 0.000 claims abstract description 128
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract description 2
- 238000000429 assembly Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a concrete strain gauge mounting device with a protection function and a construction method thereof, wherein the mounting device comprises a fixing box positioned between two structural steel bars, the front side and the rear side of the fixing box are fixed on the two structural steel bars through first steel bars, the left side and the right side of the fixing box are provided with second steel bars, the front end and the rear end of each second steel bar are fixed on the two structural steel bars, a first steel plate is fixed on the front side and the rear side in the fixing box, a second steel plate is fixed on the left side and the right side, a sensor base is formed between the two first steel plates and the second steel plates, a strain sensor is mounted in the sensor base, dowel bars on the left side and the right side of the strain sensor penetrate out of the fixing box, dowel bar positioning assemblies are arranged on the second steel bars corresponding to the dowel bars, wire preformed holes are formed in the fixing box, and wires connected with the strain sensor penetrate out of the wire preformed holes. The invention can realize the protection of the embedded strain sensor, and has convenient installation and accurate measurement result.
Description
Technical Field
The invention relates to the technical field of strain gauge mounting devices, in particular to a concrete strain gauge mounting device with a protection function and a construction method thereof.
Background
In the field of modern construction engineering inspection, embedded concrete strain gauges are often used to detect the stress strain of concrete. The strain gauge has three requirements in the installation process: 1. the strain gauge sensor parts are fragile, and the sensor is required not to be damaged in the construction process; 2. the required position and direction are accurate, and the position of the measuring point is not easy to deviate; 3. the two-end sensing device is required to be free from the deformation of the reinforcing steel bars.
The traditional binding method adopts hard steel wires to bind stress handles at two ends of a concrete strain gauge on steel bars near a measuring point, and has the defects that firstly, the strain gauge sensor and other parts are exposed and are easily damaged by concrete falling rocks in the pouring process or when concrete is vibrated, so that the strain gauge is damaged and the measuring point is invalid; secondly, if no steel bar exists at the measuring point, the strain gauge can only be bound to the steel bar with the nearest measuring point, the position of the measuring point is easy to deviate, and the steel wire binding is easy to slide when disturbed, so that the direction of the strain gauge is changed; thirdly, because the diameter of the circular rings at the two ends of the strain gauge is larger than that of the rod body, the strain gauge is bent and deformed by binding wires, so that the reading is inaccurate, in addition, the conventional concrete structure adopts a threaded reinforcing steel bar, the stressed circular rings are easily blocked by embedding reinforcing steel bars on the threaded reinforcing steel bar by binding the strain gauge, the reading of the strain gauge can be influenced by stretching deformation of the reinforcing steel bar, and further, the real deformation of the concrete material cannot be obtained in the subsequent test.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a concrete strain gauge mounting device with a protection function and a construction method thereof.
The invention adopts the following technical scheme to realize the aim:
the utility model provides a concrete strain gauge installation device with protect function, is including being located the fixed box between two structure reinforcing bars, and both sides are fixed on two structure reinforcing bars through first steel pole around the fixed box, and fixed box left and right sides is equipped with the second steel pole, and both ends are fixed on two structure reinforcing bars around the second steel pole, and both sides are fixed with first steel sheet and left and right sides and are fixed with the second steel sheet around in the fixed box, form sensor base between two first steel sheets, the second steel sheet, and strain sensor installs in the sensor base, outside the dowel steel of strain sensor left and right sides wears out the fixed box, correspond the dowel steel and be equipped with dowel steel locating component on the second steel pole, be equipped with wire preformed hole on the fixed box, the wire that strain sensor connects wears out from the wire preformed hole.
The fixed box comprises a box body connected with the two first steel rods and a box cover hinged to the top of the box body.
The left side surface and the right side surface of the box body are provided with dowel bar preformed holes, and the dowel bars pass through the dowel bar preformed holes.
The dowel bar positioning assembly comprises a cushion block welded on the second steel bar, a U-shaped spring clamping piece is welded at the top of the cushion block, and the dowel bar is inserted in the U-shaped spring clamping piece.
The second steel plate is provided with an arc-shaped groove, and the dowel bar is arranged in the arc-shaped groove.
The end part of the dowel bar is provided with a metal disc, and the diameter of the metal disc is larger than that of the dowel bar.
The construction method of the concrete strain gauge mounting device with the protection function is characterized by comprising the following specific steps of:
s1, firstly, determining the model of an embedded strain sensor, determining the length, the width and the height of the strain sensor, the diameter of a force transmission rod and the diameter of a metal wafer;
s2, determining the position of a to-be-measured point of the strain sensor and determining the distance between structural steel bars near the measured point;
s3, manufacturing a fixed box
The fixed box is divided into a box body and a box cover, the box body is made into a non-cover box shape by utilizing a steel plate, the length of the box body is 3cm longer than that of the strain sensor, the width of the box body is 3cm longer than that of the strain sensor, and the height of the box body is 1cm longer than that of the strain sensor; the left side plate and the right side plate of the box body are provided with a dowel bar preformed hole and a wire preformed hole, the dowel bar preformed hole is semicircular, the radius of the dowel bar preformed hole is 2cm larger than the diameter of the dowel bar, the diameter of the wire preformed hole is larger than the diameter of the wire, the box body is hinged with the box cover, and the strain sensor can be prevented from being damaged by falling rocks when concrete is poured after the box cover is covered, so that the strain sensor has a protection effect;
s4, manufacturing a sensor base
Welding two first steel plates and two second steel plates on a box body bottom plate of the fixed box to serve as a base for fixing the strain sensor;
the first steel plates are welded tightly against the strain sensor, the distance between the two first steel plates is the width of the strain sensor, the length of the first steel plates is l-2cm smaller than the length of the strain sensor, and the height of the first steel plates is the height of the strain sensor;
the distance between the two second steel plates is 4mm greater than the length of the strain sensor, the length of the second steel plates is 2cm smaller than the width of the strain sensor, the height of the second steel plates is the height of the strain sensor, the second steel plates are provided with arc grooves, and the radius of each arc groove is 2cm greater than the diameter of the force transmission rod;
s5, mounting and fixing box
The fixing box is welded and fixed with the first steel rod, the end part of the first steel rod is welded and fixed with the structural steel bar, and the elevation, the plane position and the left-right distance from the structural steel bar of the fixing box are all determined by the position of the measuring point;
s6, manufacturing U-shaped spring clamping piece
The dowel bar is fixed by a U-shaped spring clamping piece, the U-shaped spring clamping piece is made of an elastic steel sheet into a circle with an opening at the top, the opening at the top is made into a horn shape, the dowel bar is convenient to insert, the diameter of the circle is 2cm larger than that of the dowel bar and smaller than that of a metal disc, and the dowel bar is ensured to freely stretch in the U-shaped spring clamping piece but not to fall off;
s7, fixing U-shaped spring clamping piece
The U-shaped spring clamping piece is fixedly connected with the second steel rod through a cushion block, two ends of the second steel rod are fixedly welded with structural steel bars, the height of the U-shaped spring clamping piece is adjusted by the height of the cushion block, the dowel steel is located at the right center of the U-shaped spring clamping piece and is not in direct contact with the U-shaped spring clamping piece, the left-right distance between the U-shaped spring clamping piece and the structural steel bars is determined by the measuring point position, the distance between the first steel rod and the second steel rod is determined by the length of the dowel steel, and the U-shaped spring clamping piece is located between the strain sensor and the metal disc;
s8, mounting a strain sensor
Installing the embedded strain sensor in a base in the fixed box, enabling a dowel bar to pass through a dowel bar preformed hole, inserting the dowel bar into a U-shaped spring clamping piece, checking and installing firmly, and covering a box cover of the fixed box;
s9, installing wires
Extending the wires from the wire preformed holes on the side surface of the fixed box, binding the extended wires along the first steel rod and the structural steel bars, leading the wires to the bridge side surface or the bridge deck guard rail, and protecting the wire plugs;
s10, checking the installation effect
And connecting a wire plug led to the side surface of the bridge or the bridge deck guardrail with a detection instrument, checking whether the reading of the strain sensor is abnormal, and finishing the installation after the installation is ensured to be correct.
In the step S3, the box cover is made of a stainless steel plate with the thickness of 10mm.
In step S4, the thickness of the first steel plate and the second steel plate is 10mm.
The beneficial effects of the invention are as follows: the invention can realize the protection of the embedded strain sensor, and has convenient installation and accurate measurement result.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of dowel bar preformed holes and wire preformed holes on a side of a cassette;
FIG. 3 is a schematic view of an arcuate slot in a second steel plate;
FIG. 4 is a cross-sectional view of A-A of FIG. 1;
FIG. 5 is a cross-sectional view of B-B of FIG. 1;
in the figure: 1-a fixed box; 2-a first steel rod; 3-a second steel rod; 4-a first steel plate; 5-a second steel plate; 6-a dowel bar positioning assembly; 7-wire preformed holes; 8-structure steel bars; a 9-strain sensor; 10-a dowel bar; 11-conducting wires; 12-arc grooves; 13-a metal disc;
101-a box body; 102-box cover; 103-dowel bar preformed holes;
601-a cushion block; 602-U-shaped spring clips;
the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. The invention is more particularly described by way of example in the following paragraphs with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 5, a concrete strain gauge mounting device with a protection function comprises a fixing box 1 positioned between two structural steel bars 8, wherein the front side and the rear side of the fixing box 1 are fixed on the two structural steel bars 8 through first steel bars 2, the left side and the right side of the fixing box 1 are provided with second steel bars 3, the front side and the rear side of each second steel bar 3 are fixed on the two structural steel bars 8, a first steel plate 4 is fixed on the front side and the rear side of the fixing box 1, a second steel plate 5 is fixed on the left side and the right side of each second steel bar 1, a sensor base is formed between the two first steel plates 4 and the second steel plates 5, a strain sensor 9 is mounted in the sensor base, a dowel bar 10 on the left side and the right side of the strain sensor 9 penetrates out of the fixing box 1, dowel bars 10 corresponding to the dowel bars 10 are provided with dowel bar positioning assemblies 6, wire preformed holes 7 are arranged on the fixing box 1, and wires 11 connected with the strain sensor 9 penetrate out of the wire preformed holes 7.
The fixed box 1 comprises a box body 101 connected with two first steel bars 2 and a box cover 102 hinged on the top of the box body 101.
Dowel bar preformed holes 103 are formed in the left side surface and the right side surface of the box body 101, and dowel bars 10 penetrate through the dowel bar preformed holes 103.
The dowel bar positioning assembly 6 comprises a cushion block 601 welded on the second steel bar 3, a U-shaped spring clamping piece 602 is welded on the top of the cushion block 601, and the dowel bar 10 is inserted into the U-shaped spring clamping piece 602.
The second steel plate 5 is provided with an arc-shaped groove 12, and the dowel bar 10 is arranged in the arc-shaped groove 12.
The end of the dowel bar 10 is provided with a metal disc 13, and the diameter of the metal disc 13 is larger than that of the dowel bar 10.
The construction method of the concrete strain gauge mounting device with the protection function is characterized by comprising the following specific steps of:
s1, firstly, determining the model of the embedded strain sensor 9, determining the length, the width and the height of the strain sensor 9, the diameter of the dowel bar 10 and the diameter of the metal disc;
s2, determining the position of a to-be-measured point of the strain sensor 9, and determining the distance between structural steel bars 8 near the measured point;
s3, manufacturing a fixed box 1
The fixed box 1 is divided into a box body 101 and a box cover 102, wherein the box body 101 is made of a steel plate into a non-cover box shape, the length of the box body 101 is 3cm longer than the length of the strain sensor 9, the width of the box body is 3cm longer than the width of the strain sensor 9, and the height of the box body is 1cm longer than the height of the strain sensor 9; the left side plate and the right side plate of the box body 101 are provided with a dowel bar preformed hole 103 and a wire preformed hole 7, the dowel bar preformed hole 103 is semicircular, the radius of the dowel bar preformed hole 103 is 2cm larger than the diameter of the dowel bar 10, the diameter of the wire preformed hole 7 is larger than the diameter of the wire 11, the box body 101 is hinged with the box cover 102, and the strain sensor 9 can be ensured not to be damaged by falling rocks when concrete is poured after the box cover 102 is covered, so that a protection effect is achieved;
s4, manufacturing a sensor base
Welding two first steel plates 4 and two second steel plates 5 on the bottom plate of the box body 101 of the fixed box 1 to serve as bases for fixing the strain sensors 9;
the first steel plates 4 are welded closely to the strain sensors 9, the distance between the two first steel plates 4 is the width of the strain sensors 9, the length of each first steel plate 4 is l-2cm smaller than the length of each strain sensor 9, and the height of each first steel plate 4 is the height of each strain sensor 9;
the distance between the two second steel plates 5 is 4mm greater than the length of the strain sensor 9, the length of the second steel plates 5 is 2cm smaller than the width of the strain sensor 9, the height of the second steel plates 5 is the height of the strain sensor 9, the second steel plates 5 are provided with arc grooves 12, and the radius of the arc grooves 12 is 2cm greater than the diameter of the dowel bar 10;
s5, mounting and fixing box 1
The fixed box 1 is welded and fixed with the first steel rod 2, the end part of the first steel rod 2 is welded and fixed with the structural steel bar 8, and the elevation, the plane position and the left-right distance from the structural steel bar 8 of the fixed box 1 are all determined by measuring point positions;
s6, manufacturing U-shaped spring clamping piece 602
The dowel bar 10 is fixed by the U-shaped spring clamping piece 602, the U-shaped spring clamping piece 602 is made of an elastic steel sheet into a circle with an opening at the top, the opening at the top is made into a horn shape, the dowel bar 10 is convenient to insert, the diameter of the circle is 2cm larger than that of the dowel bar 10 and smaller than that of the metal disc 13, and the dowel bar 10 can be freely stretched in the U-shaped spring clamping piece 602 but cannot fall off;
s7, fixed U-shaped spring clip 602
The U-shaped spring clamping piece 602 is fixedly connected with the second steel rod 3 through a cushion block 601, two ends of the second steel rod 3 are fixedly welded with the structural steel bars 8, the height of the U-shaped spring clamping piece 602 is adjusted by the height of the cushion block 601, the dowel steel 10 is guaranteed to be positioned at the right center of the U-shaped spring clamping piece 602 and not to be in direct contact with the U-shaped spring clamping piece 602, the left-right distance between the U-shaped spring clamping piece 602 and the structural steel bars 8 is determined by the measuring point position, the distance between the first steel rod 2 and the second steel rod 3 is determined by the length of the dowel steel 10, and the U-shaped spring clamping piece 602 is guaranteed to be positioned between the strain sensor 9 and the metal disc 13;
s8, installing a strain sensor 9
Installing the embedded strain sensor 9 in a base in the fixed box 1, enabling the dowel bar 10 to pass through the dowel bar reserved hole 103, inserting the dowel bar 10 into the U-shaped spring clamping piece 602, checking that the installation is firm, and covering the box cover 102 of the fixed box 1;
s9, mounting wire 11
The wire 11 is extended out of the wire preformed hole 7 on the side surface of the fixed box 1, the extended wire 11 is bound along the first steel rod 2 and the structural steel bar 8, the wire 11 is led to the side surface of the bridge or the bridge deck guardrail, and the plug of the wire 11 is protected;
s10, checking the installation effect
And connecting a plug of the lead 11 led to the side surface of the bridge or the bridge deck guardrail with a detection instrument, checking whether the reading of the strain sensor 9 is abnormal, and ensuring that the installation is completed after the installation is correct.
In step S3, the cover 102 is made of a stainless steel plate having a thickness of 10mm.
In step S4, the thicknesses of the first steel sheet 4 and the second steel sheet 5 are 10mm.
The invention can realize the protection of the embedded strain sensor 9, and has convenient installation and accurate measurement result.
While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is intended to cover various modifications, either made by the method concepts and technical solutions of the invention, or applied directly to other applications without modification, within the scope of the invention.
Claims (9)
1. The utility model provides a concrete strain gauge installation device with protect function, a serial communication port, including being located fixed box (1) between two structure reinforcing bars (8), both sides are fixed on two structure reinforcing bars (8) through first steel pole (2) around fixed box (1), fixed box (1) left and right sides is equipped with second steel pole (3), both ends are fixed on two structure reinforcing bars (8) around second steel pole (3), both sides are fixed with first steel sheet (4) and left and right sides are fixed with second steel sheet (5) around in fixed box (1), form the sensor base between two first steel sheets (4), second steel sheet (5), strain sensor (9) are installed in the sensor base, outside dowel steel (10) of strain sensor (9) left and right sides wear out fixed box (1), correspondence dowel steel (10) are equipped with dowel steel locating component (6) on second steel pole (3), be equipped with wire preformed hole (7) on fixed box (1), strain sensor (9) are worn out from dowel steel wire preformed hole (11).
2. A concrete strain gauge mounting device with protection function according to claim 1, characterized in that the fixed box (1) comprises a box body (101) connected with two first steel bars (2) and a box cover (102) hinged on top of the box body (101).
3. The concrete strain gauge mounting device with the protection function according to claim 2, wherein dowel bars (10) pass through dowel bar preformed holes (103) on the left side surface and the right side surface of the box body (101).
4. A concrete strain gauge mounting device with protection function according to claim 3, characterized in that the dowel bar positioning assembly (6) comprises a cushion block (601) welded on the second steel bar (3), a U-shaped spring clamping piece (602) is welded on top of the cushion block (601), and the dowel bar (10) is inserted in the U-shaped spring clamping piece (602).
5. A concrete strain gauge mounting apparatus with protection function according to claim 4, characterized in that the second steel plate (5) is provided with an arc-shaped groove (12), and the dowel bar (10) is mounted in the arc-shaped groove (12).
6. The concrete strain gauge mounting device with the protection function according to claim 5, wherein the end part of the dowel bar (10) is provided with a metal disc (13), and the diameter of the metal disc (13) is larger than that of the dowel bar (10).
7. A construction method of the concrete strain gauge mounting device with protection function according to claim 6, characterized by comprising the specific steps of:
s1, firstly, determining the model of an embedded strain sensor (9), and determining the length, the width and the height of the strain sensor (9), the diameter of a dowel bar (10) and the diameter of a metal disc;
s2, determining the point to be measured of the strain sensor (9), and determining the distance between structural steel bars (8) near the point to be measured;
s3, manufacturing fixed box (1)
The fixed box (1) is divided into a box body (101) and a box cover (102), wherein the box body (101) is made of a steel plate into a non-cover box shape, the length of the box body (101) is 3cm larger than the length of the strain sensor (9), the width of the box body is 3cm larger than the width of the strain sensor (9), and the height of the box body is 1cm larger than the height of the strain sensor (9); a dowel bar preformed hole (103) and a wire preformed hole (7) are formed in the left side plate and the right side plate of the box body (101), the dowel bar preformed hole (103) is semicircular, the radius of the dowel bar preformed hole (103) is 2cm larger than the diameter of the dowel bar (10), the diameter of the wire preformed hole (7) is larger than the diameter of the wire (11), the box body (101) is hinged with the box cover (102), and the strain sensor (9) can be prevented from being damaged by falling rocks when concrete is poured after the box cover (102) is covered, so that a protection effect is achieved;
s4, manufacturing a sensor base
Welding two first steel plates (4) and two second steel plates (5) on a bottom plate of a box body (101) of the fixed box (1) to serve as bases for fixing the strain sensors (9);
the first steel plates (4) are tightly adhered to the strain sensors (9) for welding, the distance between the two first steel plates (4) is the width of the strain sensors (9), the length of each first steel plate (4) is l-2cm smaller than the length of each strain sensor (9), and the height of each first steel plate (4) is the height of each strain sensor (9);
the distance between the two second steel plates (5) is 4mm greater than the length of the strain sensor (9), the length of the second steel plates (5) is 2cm smaller than the width of the strain sensor (9), the height of the second steel plates (5) is the height of the strain sensor (9), the second steel plates (5) are provided with arc grooves (12), and the radius of the arc grooves (12) is 2cm greater than the diameter of the dowel bar (10);
s5, mounting and fixing box (1)
The fixing box (1) is welded and fixed with the first steel rod (2), the end part of the first steel rod (2) is welded and fixed with the structural steel bar (8), and the elevation, the plane position and the left-right distance from the structural steel bar (8) of the fixing box (1) are determined by measuring point positions;
s6, manufacturing U-shaped spring clip (602)
The dowel bar (10) is fixed by a U-shaped spring clamping piece (602), the U-shaped spring clamping piece (602) is made of an elastic steel sheet into a circle with an opening at the top, the opening at the top is made into a horn shape, the dowel bar (10) is convenient to insert, the diameter of the circle is 2cm larger than that of the dowel bar (10) and smaller than that of a metal disc (13), and the dowel bar (10) can be freely stretched in the U-shaped spring clamping piece (602) but cannot fall off;
s7, fixed U type spring clip (602)
The U-shaped spring clamping piece (602) is fixedly connected with the second steel rod (3) through a cushion block (601), two ends of the second steel rod (3) are fixedly welded with the structural steel bars (8), the height of the U-shaped spring clamping piece (602) is adjusted by the height of the cushion block (601), the fact that the dowel steel (10) is located at the right center of the U-shaped spring clamping piece (602) and is not in direct contact with the U-shaped spring clamping piece (602) is guaranteed, the left-right distance between the U-shaped spring clamping piece (602) and the structural steel bars (8) is determined by measuring point positions, the distance between the first steel rod (2) and the second steel rod (3) is determined by the length of the dowel steel (10), and the fact that the U-shaped spring clamping piece (602) is located between the strain sensor (9) and the metal disc (13) is guaranteed;
s8, mounting strain sensor (9)
Installing the embedded strain sensor (9) in a base in the fixed box (1), enabling the dowel bar (10) to pass through a dowel bar reserved hole (103), inserting the dowel bar (10) into the U-shaped spring clamping piece (602), and covering a box cover (102) of the fixed box (1) after the installation is firm;
s9, mounting wire (11)
The wire (11) is extended out of a wire preformed hole (7) on the side surface of the fixed box (1), the extended wire (11) is bound along the first steel rod (2) and the structural steel bar (8), the wire (11) is led to the side surface of the bridge or the bridge deck guardrail, and the plug of the wire (11) is protected;
s10, checking the installation effect
And connecting a plug of a lead (11) led to the side surface of the bridge or the bridge deck guardrail with a detection instrument, checking whether the reading of the strain sensor (9) is abnormal, and finishing the installation after ensuring that the installation is correct.
8. The construction method of a concrete strain gauge mounting apparatus with a protection function according to claim 7, wherein in step S3, the cover (102) is made of a stainless steel plate having a thickness of 10mm.
9. The method for constructing a concrete strain gauge mounting apparatus with a protection function according to claim 8, wherein in step S4, the thickness of the first steel plate (4) and the second steel plate (5) is 10mm.
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| CN202310324487.8A CN116026281B (en) | 2023-03-30 | 2023-03-30 | Concrete strain gauge mounting device with protection function and construction method thereof |
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| CN202310324487.8A CN116026281B (en) | 2023-03-30 | 2023-03-30 | Concrete strain gauge mounting device with protection function and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117591837A (en) * | 2024-01-19 | 2024-02-23 | 中国航发四川燃气涡轮研究院 | Method for diagnosing feasibility of mounting scheme of strain gauge of rotor blade of gas compressor |
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|---|---|
| CN116026281B (en) | 2023-06-30 |
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