CN220708595U - Wireless monitoring structure of bridge prestressing force - Google Patents
Wireless monitoring structure of bridge prestressing force Download PDFInfo
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- CN220708595U CN220708595U CN202322108620.4U CN202322108620U CN220708595U CN 220708595 U CN220708595 U CN 220708595U CN 202322108620 U CN202322108620 U CN 202322108620U CN 220708595 U CN220708595 U CN 220708595U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
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- 230000005611 electricity Effects 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 24
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 12
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
The utility model provides a wireless monitoring structure of bridge prestressing force, relates to bridge detection technical field, cooperates with the prestressing force steel strand wires of the prestressing force stretch-draw side of bridge, including setting up at the anchor backing plate of bridge prestressing force stretch-draw side, installing the anchor rope meter on the anchor backing plate through wedge backing plate and fixed mounting data transmitter on the anchor backing plate, anchor backing plate lateral part indent is provided with and is used for the card to fix the notch of wedge backing plate, data transmitter with the anchor rope meter passes through the cable electricity and is connected, the prestressing force steel strand wires pass anchor backing plate, wedge backing plate, anchor rope meter stretch-draw monitoring, data transmitter will detect the prestressing force data wireless transmission that obtains. The utility model adopts wireless emission to make measurement more convenient, and adds the notch of the anchor backing plate and the wedge backing plate to make the prestress steel strand which is not vertical to the anchor backing plate easier to stretch, reduce prestress loss in stretching process and prevent slippage in stretching process.
Description
Technical Field
The utility model relates to the technical field of bridge detection, in particular to a wireless monitoring structure for bridge prestress.
Background
At present, the detection of the prestress under the bridge anchors mainly adopts a vibrating wire strain gauge made of stainless steel, and the vibrating wire strain gauge has high precision and sensitivity, excellent waterproof performance, corrosion resistance and long-term stability. The special four-core shielded cable is used for transmitting frequency and temperature resistance signals, and the frequency signals are not influenced by the length of the cable. The method is suitable for long-term monitoring of the strain change of the building under severe environment. However, the conventional bridge cable detection system has the original defects of complicated wiring, large influence on measurement accuracy due to wiring and the like, and is greatly limited in practical use.
The existing vibrating wire sensor can be used as a high-precision data acquisition joint, and a wireless transmission function can be realized if a wireless transmission module is added; loRa is a long-distance wireless transmission technology based on a spread spectrum technology, and the advantage of LoRa is long-distance capability in the technical aspect. A single gateway or base station may cover the entire city or hundreds of square kilometers. The nodes are firstly connected with the LoRa gateway through LoRa wireless communication, and then connected to the PC end server through a 4G network or an Ethernet. The gateway and the PC end server are communicated through a TCP/IP protocol, so that the prestress data of multiple nodes can be remotely collected.
Based on the above, the utility model designs a wireless bridge prestress monitoring structure to solve the above problems.
Disclosure of Invention
The utility model aims to provide a wireless bridge prestress monitoring structure for solving the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a wireless monitoring structure of bridge prestressing force, cooperates with the prestressing force steel strand wires of the prestressing force stretch-draw side of bridge, including setting up at the anchor backing plate of bridge prestressing force stretch-draw side, installing the anchor rope meter on the anchor backing plate through the wedge backing plate and fixed mounting data transmitter on the anchor backing plate, anchor backing plate lateral part indent is provided with and is used for the card to fix the notch of wedge backing plate, data transmitter with the anchor rope meter passes through the cable electricity and is connected, the prestressing force steel strand wires pass anchor backing plate, wedge backing plate, anchor rope meter stretch-draw monitoring, data transmitter will detect the wireless transmission of gained prestressing force data.
Further, the wedge angle of the wedge-shaped backing plate is equal to the angle between the anchor backing plate and the vertical line of the prestressed steel strand.
Further, the anchor rope meter comprises an alloy barrel, a plurality of vibrating wire strain gauges uniformly distributed and welded in the alloy barrel, a bearing plate fixedly arranged on one side of the alloy barrel far away from the wedge-shaped base plate, and a junction box arranged on the side part of the alloy barrel, wherein the junction box is electrically connected with the data transmitter through the cable.
Further, the data transmitter comprises a device shell, a wireless transmitter circuit board is fixedly arranged in the device shell, a data interface electrically connected with the anchor cable meter through a cable is arranged at the top of the device shell, a wireless communication interface is arranged on the side face of the device shell, an antenna is connected to the wireless communication interface, and a wired communication interface is arranged on the top face of the device shell.
Further, the bottom of the device shell is provided with a plurality of bolt mounting holes for being fixedly matched with the wedge-shaped backing plate.
Further, the wireless transmitter circuit board comprises a data control module and a Lora wireless module, wherein the data control module and the Lora wireless module are used for controlling reading and transmission of data.
Further, the wireless communication interface is an SMA antenna interface of the Lora wireless module and is used for connecting an antenna for wireless communication, and the antenna is a 470Mhz rod antenna.
Furthermore, the wired communication interface is a DB9 interface, and the wired communication interface and the external equipment perform wired data transmission through an RS232 serial port line.
Further, the thinnest end of the wedge-shaped shim plate has a thickness of at least 20mm.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The original defects that the existing bridge wired detection system is complicated in wiring, the measurement accuracy is greatly affected by the wiring and the like are overcome, and the wireless transmission is adopted to enable the measurement to be more convenient.
(2) The groove opening of the anchor backing plate and the wedge backing plate are additionally arranged, so that the prestressed steel strand which is not vertical to the anchor backing plate is easier to stretch, the prestress loss in the stretching process is reduced, and the slippage does not occur in the stretching process.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of a data transmitter according to the present utility model;
FIG. 3 is a schematic top view of a data transmitter according to the present utility model;
FIG. 4 is a schematic top view of the cable gauge of the present utility model;
in the drawings, the list of components represented by the various numbers is as follows:
1. an anchor cable gauge; 2. a data transmitter; 3. prestress steel strand; 4. a pressure bearing plate; 5. an elastic alloy cylinder; 6. vibrating wire strain gauge; 7. a cable; 8. a junction box; 9. wedge-shaped backing plate; 10. an anchor backing plate; 11. a notch; 12. bridge, 21, device housing; 22. a wireless transmitter circuit board; 23. a data control module; 24. a Lora wireless module; 25. a wireless communication interface; 26. a data interface; 27. a wired communication interface; 28. an antenna; 29. bolt holes.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-4, the wireless monitoring structure of bridge prestress cooperates with a prestress steel strand 3 on the prestress tensioning side of a bridge 12, and comprises an anchor backing plate 10 arranged on the prestress tensioning side of the bridge 12, an anchor rope meter 1 arranged on the anchor backing plate 10 through a wedge backing plate 9, and a data transmitter 2 fixedly arranged on the anchor backing plate 10, wherein a notch 11 for clamping the wedge backing plate 9 is concavely arranged on the side part of the anchor backing plate 10, the data transmitter 2 is electrically connected with the anchor rope meter 1 through a cable 7, the prestress steel strand 3 passes through the anchor backing plate 10, the wedge backing plate 9 and the anchor rope meter 1 for tensioning monitoring, and the data transmitter 2 wirelessly transmits prestress data obtained by detection.
Specifically, as shown in the figure, the wedge angle of the wedge-shaped backing plate 9 is equal to the angle between the anchor backing plate 10 and the vertical line of the prestressed steel strand 3, so as to ensure that the prestressed steel strand is vertical to the wedge-shaped backing plate, and the aperture in the middle of the wedge-shaped backing plate 9 is the same as the anchor backing plate 10.
Specifically, as shown in the figure, the anchor cable gauge 1 comprises an alloy cylinder 5, a plurality of vibrating wire strain gauges 6 uniformly distributed and welded in the alloy cylinder 5, a bearing plate 4 fixedly arranged on one side of the alloy cylinder 5 far away from a wedge-shaped backing plate 9, and a junction box 8 arranged on the side part of the alloy cylinder 5, wherein the junction box 8 is electrically connected with the data transmitter 2 through the cable 7.
Specifically, the bearing plate 4 is used for bearing the load applied by the jack step by step, so that the elastic alloy cylinder 5 is axially deformed, and the vibrating wire strain gauge 6 welded in the elastic alloy cylinder is synchronously deformed. The vibrating wire strain gauge 6 generates stress change after deformation, so that the vibration frequency of the vibrating wire is changed, the magnetic field lines are cut in the magnetic field after vibration of the vibrating wire, the generated induced electromotive force is transmitted through the cable 7, the data measured by the vibrating wire strain gauges are averaged to be a final measured value, and the error in the monitoring process can be reduced.
Specifically, as shown in the figure, the data transmitter 2 includes a device housing 21, a wireless transmitter circuit board 22 is fixedly disposed in the device housing 21, a data interface 26 electrically connected with the anchor cable meter 1 through a cable 7 is disposed at the top of the device housing 21, a wireless communication interface 25 is disposed on a side surface of the device housing 21, an antenna 28 is connected to the wireless communication interface 25, and a wired communication interface 27 is disposed on the top surface of the device housing 21.
Specifically, as shown in the figure, the bottom of the device housing 21 is provided with a plurality of bolt mounting holes 29 for fixedly engaging with the wedge-shaped pad 9.
Specifically, as shown, the wireless transmitter circuit board 22 includes a data control module 23 for controlling reading and transmission of data, and a Lora wireless module 24.
Specifically, as shown in the figure, the wireless communication interface 25 is an SMA antenna interface of the Lora wireless module 24, and is used for connecting an antenna 28 for wireless communication, and the antenna 28 is a 470Mhz rod antenna.
Specifically, as shown in the figure, the wired communication interface 27 is a DB9 interface, and the wired communication interface 27 and an external device perform wired data transmission through an RS232 serial line.
Specifically, as shown in the figure, the thickness of the thinnest end of the wedge-shaped backing plate 9 is at least 20mm, so as to ensure the strength requirement during tensioning.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (9)
1. The utility model provides a wireless monitoring structure of bridge prestressing force, cooperates with prestressing force steel strand wires (3) of prestressing force tensioning side of bridge (12), its characterized in that, including anchor backing plate (10) that set up in bridge (12) prestressing force tensioning side, anchor rope meter (1) on anchor backing plate (10) are installed through wedge backing plate (9) to and data transmitter (2) of fixed mounting on anchor backing plate (10), anchor backing plate (10) lateral part indent is provided with be used for the card to fix notch (11) of wedge backing plate (9), data transmitter (2) with anchor rope meter (1) are connected through cable (7) electricity, prestressing force steel strand wires (3) pass anchor backing plate (10), wedge backing plate (9), anchor rope meter (1) stretch-draw monitoring, data transmitter (2) are with the wireless transmission of the prestressing force data that detects.
2. A bridge pre-stressing wireless monitoring structure according to claim 1, characterized in that the wedge angle of the wedge-shaped shim plate (9) is equal to the angle between the anchor shim plate (10) and the vertical line of the pre-stressing steel strand (3).
3. The bridge prestress wireless monitoring structure according to claim 1, wherein the anchor cable gauge (1) comprises an alloy barrel (5), a plurality of vibrating wire strain gauges (6) uniformly distributed and welded in the alloy barrel (5), a pressure bearing plate (4) fixedly arranged on one side, far away from a wedge-shaped base plate (9), of the alloy barrel (5), and a junction box (8) arranged on the side of the alloy barrel (5), wherein the junction box (8) is electrically connected with the data transmitter (2) through the cable (7).
4. A bridge pre-stressing wireless monitoring structure according to claim 3, characterized in that the data transmitter (2) comprises a device housing (21), a wireless transmitter circuit board (22) is fixedly arranged in the device housing (21), a data interface (26) electrically connected with the anchor rope meter (1) through a cable (7) is arranged at the top of the device housing (21), a wireless communication interface (25) is arranged on the side face of the device housing (21), an antenna (28) is connected at the wireless communication interface (25), and a wired communication interface (27) is arranged on the top face of the device housing (21).
5. The bridge prestress wireless monitoring structure according to claim 4, wherein the bottom of the device housing (21) is provided with a plurality of bolt mounting holes (29) for fixedly matching with the wedge-shaped backing plate (9).
6. The bridge prestress wireless monitoring structure according to claim 4, wherein the wireless transmitter circuit board (22) comprises a data control module (23) and a Lora wireless module (24) for controlling reading and transmission of data.
7. The bridge prestress wireless monitoring structure of claim 6, wherein the wireless communication interface (25) is an SMA antenna interface of a Lora wireless module (24) for connecting an antenna (28) for wireless communication, and the antenna (28) is a 470Mhz rod antenna.
8. The bridge prestress wireless monitoring structure according to claim 4, wherein the wired communication interface (27) is a DB9 interface, and the wired communication interface (27) and an external device perform wired data transmission through an RS232 serial port line.
9. A bridge pre-stressing wireless monitoring structure according to claim 1, characterized in that the thinnest end of the wedge-shaped shim plate (9) has a thickness of at least 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322108620.4U CN220708595U (en) | 2023-08-07 | 2023-08-07 | Wireless monitoring structure of bridge prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322108620.4U CN220708595U (en) | 2023-08-07 | 2023-08-07 | Wireless monitoring structure of bridge prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220708595U true CN220708595U (en) | 2024-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322108620.4U Active CN220708595U (en) | 2023-08-07 | 2023-08-07 | Wireless monitoring structure of bridge prestressing force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220708595U (en) |
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2023
- 2023-08-07 CN CN202322108620.4U patent/CN220708595U/en active Active
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