CN109916358A - High-speed rail bridge support and beam-ends gap automatic monitoring device and its detection method - Google Patents
High-speed rail bridge support and beam-ends gap automatic monitoring device and its detection method Download PDFInfo
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- CN109916358A CN109916358A CN201910162622.7A CN201910162622A CN109916358A CN 109916358 A CN109916358 A CN 109916358A CN 201910162622 A CN201910162622 A CN 201910162622A CN 109916358 A CN109916358 A CN 109916358A
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- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000006073 displacement reaction Methods 0.000 claims abstract description 70
- 238000012360 testing method Methods 0.000 claims abstract description 52
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- 238000005259 measurement Methods 0.000 claims description 3
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- 230000007246 mechanism Effects 0.000 description 6
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- 230000003862 health status Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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Abstract
The invention discloses a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device and its detection methods, a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device, including gateway and collector, the gateway is mounted on above the bridge pier of bridge pad side, the collector is mounted in front of bridge pier, and the gateway is connected separately with support corner displacement testing agency, support lateral displacement testing agency, support length travel testing agency and beam end displacement testing agency.LoRa is whole world Internet of Things transmission technology most burning hot in recent years, it is a kind of spread spectrum, can transmit 2 kilometers to 8 kilometers under battery electric power thus supplied according to power consumption difference and differ.In terms of bridge machinery, longer bridge can also be completely covered with signal.Eliminate wireless relay part.This equally saves relaying purchase cost, solar energy whole system purchase cost, installation cost and maintenance cost, while ensure that the more stable transmission of data.
Description
Technical field
The present invention relates to railway systems technical field, specially a kind of high-speed rail bridge support and beam-ends gap monitor dress automatically
It sets and its detection method.
Background technique
High-speed rail bridge support and beam-ends gap detection are the detections to the multidirectional support of high-speed rail bridge and between two bridges
It is detected in gap.The detection of support includes: lateral displacement, length travel, the detection of corner displacement.The detection in beam-ends gap,
It is exactly the detection of clearance distance between bridge and bridge.High-speed rail bridge abutment portion can not use power supply electricity without direct sunlight
Cable, distance, remote location.
High-speed rail bridge detection at present is mainly artificial detection and observation, the use of tool is mainly gage, and high-speed rail bridge is more, inspection
Survey task weight, personnel are few, effective low, can only often check a support health status every year；Monitoring means is original, mainly by
Personnel's detection and observation, obtained data have error；Bridge is high, current check personnel there are biggish difficulty and security risk,
So providing a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device and its detection method to solve asking for above-mentioned appearance
Topic very it is necessary to.
Summary of the invention
The purpose of the present invention is to provide a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device and its detection sides
Method, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of high-speed rail bridge support and beam-ends gap are automatic
Monitoring device, including gateway and collector, the gateway are mounted on above the bridge pier of bridge pad side, the collector installation
In front of bridge pier, it is vertical that the gateway is connected separately with support corner displacement testing agency, support lateral displacement testing agency, support
To displacement detecting mechanism and beam end displacement testing agency, support corner displacement testing agency is mounted on the outside of bridge pad
Between bridge pier and the first bridge, support lateral displacement testing agency be mounted on bridge pad side and the first bridge bottom it
Between, support length travel testing agency is mounted in front of bridge pad between the first bridge bottom, the beam end displacement
Testing agency one end is fixedly connected with connecting plate, and the beam end displacement testing agency and connecting plate are respectively fixedly connected in first
Bridge one end and second bridge one end.
Preferably, support corner displacement testing agency, support lateral displacement testing agency, support length travel detection
Mechanism and beam end displacement testing agency include fixed plate and displacement sensor, and institute's displacement sensors are fixedly connected on fixation
Above plate.
Preferably, the fixed plate is L-shaped structure, the fixed plate be adhered to above bridge pier respectively by glue and
First bridge bottom and front.
Preferably, the gateway is connected with solar panel by conducting wire.
Preferably, the quantity of support corner displacement testing agency is three groups, and support corner displacement described in three groups is examined
Mechanism is surveyed to be centrosymmetric above the bridge pier on the outside of bridge pad distribution.
The present invention also provides the detection method of a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device, including it is as follows
Step:
S1: three-dimensional cartesian coordinate system, the displacement of the corner displacement sensor in three groups of support corner displacement testing agencies are constructed
Respectively h1, h2, h3, using h3 sensor fulcrum as origin, the direction h3 and h1 as x-axis, the direction h3 and h2 as y-axis, he
Face be used as z-axis vertically upward, construct three-dimensional system of coordinate；
S2: corner calculates, and h1, h2, h3 are obtained by the corner displacement sensor measurement in three groups of support corner displacement testing agencies
It arrives, L determines that it is the side length of isosceles right angle trigonometry when installing sensor, calculated by this 4 amounts derivations
Corner.
Compared with prior art, the beneficial effects of the present invention are:
1, all displacement sensors and acquisition equipment all use ultra low power devices.Standby current 2.7uA.Therefore battery is used
The simple work for 10 years of power supply energy, it is not necessary that go using solar powered.Save solar energy whole system purchase cost
With solar energy installation cost and maintenance cost；
2, using the transmission technology LoRa of low-power consumption overlength distance.LoRa is whole world Internet of Things transmission most burning hot in recent years
Technology, it is a kind of spread spectrum, can transmit 2 kilometers to 8 kilometers under battery electric power thus supplied according to power consumption difference and differ.
In terms of bridge machinery, longer bridge can also be completely covered with signal.Eliminate wireless relay part.This is equally saved
Relaying purchase cost, solar energy whole system purchase cost, installation cost and maintenance cost, while ensure that data more
Stablize transmission；
3, gateway uses NB-IoT uploading file, instead of original GPRS technology.NB-IoT is to carry out emerging Internet of Things this year
Technology, it is the network for aiming at Internet of Things and transmitting being derived based on 4G network.The signal intensity ratio GPRS of the base station NB-IoT
The high 23dbm of signal strength, therefore his coverage area is more wide, we can also be received in more remote area
To base station signal.The power consumption of NB-IoT is very low, and well below GPRS, therefore we can be when powering to gateway
Solar electric power supply system is done very small and exquisite.Simultaneously the rate of NB-IoT be fixed 20 yuan 1 year, this rate well below
The rate of GPRS；
4, the high accuracy displacement sensor of low-power consumption has been used.Railroad bridge detection needs more smart than highway bridge detection parameters
Close, we can reach 0.01 millimeter to the detection accuracy of bridge displacement.It can solve the Precision measurements such as high-speed rail bridge roll angle inspection
Demand.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is support corner displacement of the present invention testing agency and bridge pad overlooking structure diagram；
Fig. 3 is support corner displacement of the present invention testing agency structural schematic diagram；
Fig. 4 is that three-dimensional rectangular coordinate of the present invention constructs schematic diagram；
Fig. 5 is that first quartile regional perspective 9 of the present invention etc. divides schematic diagram；
Fig. 6 is the high-level schematic of y-axis of the present invention and z-axis relative to origin.
In figure: 1, gateway；2, collector；3, solar panel；4, support corner displacement testing agency；5, support is lateral
Displacement detecting mechanism；6, support length travel testing agency；7, beam end displacement testing agency；8, connecting plate；9, fixed plate；10,
Displacement sensor；11, bridge pier；12, bridge pad；13, the first bridge；14, the second bridge.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1-6, the present invention provides a kind of technical solution: a kind of high-speed rail bridge support and beam-ends gap monitor automatically
Device, including gateway 1 and collector 2, the gateway 1 are mounted on 11 top of bridge pier of 12 side of bridge pad, the collector 2
It is mounted on 11 front of bridge pier, the gateway 1 is connected separately with support corner displacement testing agency 4, support lateral displacement detection machine
Structure 5, support length travel testing agency 6 and beam end displacement testing agency 7, support corner displacement testing agency 4 are mounted on
Between the bridge pier 11 and the first bridge 13 in 12 outside of bridge pad, support lateral displacement testing agency 5 is mounted on bridge branch
Between 12 sides of seat and 13 bottom of the first bridge, support length travel testing agency 6 be mounted on the front of bridge pad 12 with
Between first bridge, 13 bottom, described 7 one end of beam end displacement testing agency is fixedly connected with connecting plate 8, the beam end displacement inspection
It surveys mechanism 7 and connecting plate 8 is respectively fixedly connected in 14 one end of 13 one end of the first bridge and the second bridge；Wherein collector 2 is adopted
It is powered with battery, inside includes super low-power consumption microprocessor, LoRa wireless transport module, sensor acquisition interface, temperature acquisition
Interface composition.6 ultra-low-power high-precision displacement sensors 10 are connected simultaneously, and a whole set of collector 2 and displacement sensor 10 are installed
At bridge pad 12 can, the timing of collector 2 (daily multi collect is once sent) acquisition support and beam-ends gap
Displacement data is wirelessly transmitted to gateway 1 by LoRa overlength distance；Gateway 1 uses small-sized solar solar panel+lithium battery mould
Formula power supply, inside include miniature solar recharging management module, NB-IoT module, LoRa module and low-power consumption high speed master control
Device module processed.1 power consumption of gateway is very low, and power only has 0.1W.Gateway 1 is mounted on the middle position of bridge, can obtain half in this way
The signal cover that 3 kilometers of diameter.Gateway 1 continues working, and gateway LoRa module ought receive collector and is transmitted across by LoRa
When the data come, gateway 1 wakes up NB-IoT, server is sent to by NB-IoT module after LoRa data processing
Cloud server, at this moment can be in the data for understanding bridge in real time thousands of miles away.
Support corner displacement testing agency 4, support lateral displacement testing agency 5, support length travel testing agency 6
It include fixed plate 9 and displacement sensor 10 with beam end displacement testing agency 7, institute's displacement sensors 10 are fixedly connected on
9 top of fixed board.The fixed plate 9 is L-shaped structure, the fixed plate 9 by glue be adhered to respectively the top of bridge pier 11 and
First bridge, 13 bottom and front.The gateway 1 is connected with solar panel 3 by conducting wire.The support corner displacement inspection
The quantity for surveying mechanism 4 is three groups, and support corner displacement testing agency 4 described in three groups is on the bridge pier 11 in 12 outside of bridge pad
Just be centrosymmetric distribution.
The present invention also provides the detection method of a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device, including it is as follows
Step:
S1: building three-dimensional cartesian coordinate system, three groups of support corner displacements examine sensor, their installation site forms a right angle
Triangle, their fulcrum can construct a plane；
S2: according to the quadrant of these three sensors taught where can determining plane according to coordinate system.
S3: we are sampled point according to 10 ° each quadrant, calculate separately out corresponding angle, we select maximum
Angle, this angle are just the largest angle data.
Excessively high precision does not have in all senses for construction personnel, and increases the computational load of collector cpu.Cause
This corner direction both meets the requirement of construction personnel using 10 ° of precision as sampling precision, and the calculating that can also reduce cpu is negative
Lotus.
Whole system of the present invention is formed using the star-like networking mode of collector 2+ gateway 1, and gateway 1 is mounted on bridge midpoint
Position, collector 2 are separately mounted to each 11 position of bridge pier, and package unit is all around high-precision, and low-power consumption is easy to install,
Low cost, design easy to maintain.Compared with highway bridge detection, the relay portion eliminated first eliminates collector 2 in fact
Solar powered part, reduce the solar powered part of gateway 1 again, while the stability of increased data transmission,
A large amount of post and telecommunication tariff is saved, more accurate detection is realized.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of high-speed rail bridge support and beam-ends gap automatic monitoring device, including gateway (1) and collector (2), feature exists
In: the gateway (1) is mounted on above the bridge pier (11) of bridge pad (12) side, and the collector (2) is mounted on bridge pier
(11) front, the gateway (1) are connected separately with support corner displacement testing agency (4), support lateral displacement testing agency
(5), support length travel testing agency (6) and beam end displacement testing agency (7), support corner displacement testing agency (4)
It is mounted between the bridge pier (11) on the outside of bridge pad (12) and the first bridge (13), support lateral displacement testing agency
(5) it is mounted between bridge pad (12) side and the first bridge (13) bottom, support length travel testing agency (6) peace
In front of bridge pad (12) between the first bridge (13) bottom, described beam end displacement testing agency (7) one end is fixed to be connected
It is connected to connecting plate (8), the beam end displacement testing agency (7) and connecting plate (8) are respectively fixedly connected in the first bridge (13)
One end and the second bridge (14) one end.
2. a kind of high-speed rail bridge support according to claim 1 and beam-ends gap automatic monitoring device, it is characterised in that: institute
State support corner displacement testing agency (4), support lateral displacement testing agency (5), support length travel testing agency (6) and beam
End movement testing agency (7) includes fixed plate (9) and displacement sensor (10), and institute's displacement sensors (10) are fixedly connected
Above fixed plate (9).
3. a kind of high-speed rail bridge support according to claim 2 and beam-ends gap automatic monitoring device, it is characterised in that: institute
Stating fixed plate (9) is L-shaped structure, and the fixed plate (9) is adhered to above bridge pier (11) respectively by glue and the first bridge
Beam (13) bottom and front.
4. a kind of high-speed rail bridge support according to claim 1 and beam-ends gap automatic monitoring device, it is characterised in that: institute
It states gateway (1) and solar panel (3) is connected with by conducting wire.
5. a kind of high-speed rail bridge support according to claim 1 and beam-ends gap automatic monitoring device, it is characterised in that: institute
The quantity for stating support corner displacement testing agency (4) is three groups, and support corner displacement testing agency (4) described in three groups is in bridge
Be centrosymmetric distribution above bridge pier (11) on the outside of support (12).
6. the detection method of a kind of high-speed rail bridge support according to claim 1 and beam-ends gap automatic monitoring device,
It is characterized in that: including the following steps:
S1: three-dimensional cartesian coordinate system, the displacement of the corner displacement sensor in three groups of support corner displacement testing agencies (4) are constructed
Amount is respectively h1, h2, h3, using h3 sensor fulcrum as origin, the direction h3 and h1 as x-axis, the direction h3 and h2 as y-axis,
Their face is used as z-axis vertically upward, constructs three-dimensional system of coordinate；
S2: corner calculates, and h1, h2, h3 are by the corner displacement sensor measurement in three groups of support corner displacement testing agencies (4)
It obtains, L determines that it is the side length of isosceles right angle trigonometry when installing sensor, pass through this 4 amounts and derive calculating
Corner out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910162622.7A CN109916358A (en) | 2019-03-05 | 2019-03-05 | High-speed rail bridge support and beam-ends gap automatic monitoring device and its detection method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910162622.7A CN109916358A (en) | 2019-03-05 | 2019-03-05 | High-speed rail bridge support and beam-ends gap automatic monitoring device and its detection method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110276133A (en) * | 2019-06-24 | 2019-09-24 | 同济大学 | Box girder bridge overturn-preventing based on structural response measurement monitors system |
| CN110455474A (en) * | 2019-09-11 | 2019-11-15 | 苏交科集团股份有限公司 | A kind of bridge pad deformation visualization early warning system and method |
| WO2021046846A1 (en) * | 2019-09-14 | 2021-03-18 | 南京东南建筑机电抗震研究院有限公司 | High-speed railway bridge damage monitoring system |
| CN112902850A (en) * | 2021-01-20 | 2021-06-04 | 沈阳建筑大学 | Support displacement sensor based on bridge health monitoring system and mounting method thereof |
| CN112982194A (en) * | 2019-09-04 | 2021-06-18 | 石家庄铁道大学 | Assembly device for railway bridge beam end jacking maintenance |
-
2019
- 2019-03-05 CN CN201910162622.7A patent/CN109916358A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110276133A (en) * | 2019-06-24 | 2019-09-24 | 同济大学 | Box girder bridge overturn-preventing based on structural response measurement monitors system |
| CN110276133B (en) * | 2019-06-24 | 2023-05-05 | 同济大学 | Box girder bridge anti-overturning monitoring system based on structural response measurement |
| CN112982194A (en) * | 2019-09-04 | 2021-06-18 | 石家庄铁道大学 | Assembly device for railway bridge beam end jacking maintenance |
| CN112982195A (en) * | 2019-09-04 | 2021-06-18 | 石家庄铁道大学 | Railway bridge beam end jacking maintenance method |
| CN112982194B (en) * | 2019-09-04 | 2022-08-30 | 石家庄铁道大学 | Assembly device for railway bridge beam end jacking maintenance |
| CN110455474A (en) * | 2019-09-11 | 2019-11-15 | 苏交科集团股份有限公司 | A kind of bridge pad deformation visualization early warning system and method |
| WO2021046846A1 (en) * | 2019-09-14 | 2021-03-18 | 南京东南建筑机电抗震研究院有限公司 | High-speed railway bridge damage monitoring system |
| CN112902850A (en) * | 2021-01-20 | 2021-06-04 | 沈阳建筑大学 | Support displacement sensor based on bridge health monitoring system and mounting method thereof |
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Application publication date: 20190621 |