CN106644326A - Bridge load limit fast monitoring system based on dynamic deflection - Google Patents

Bridge load limit fast monitoring system based on dynamic deflection Download PDF

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Publication number
CN106644326A
CN106644326A CN201710085019.4A CN201710085019A CN106644326A CN 106644326 A CN106644326 A CN 106644326A CN 201710085019 A CN201710085019 A CN 201710085019A CN 106644326 A CN106644326 A CN 106644326A
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China
Prior art keywords
bridge
vehicle
data
load limit
deflection
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CN201710085019.4A
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Chinese (zh)
Inventor
何先龙
杨学山
佘天莉
贾行建
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Institute of Engineering Mechanics China Earthquake Administration
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Institute of Engineering Mechanics China Earthquake Administration
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Priority to CN201710085019.4A priority Critical patent/CN106644326A/en
Publication of CN106644326A publication Critical patent/CN106644326A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0008Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

The invention discloses a bridge load limit fast monitoring system based on dynamic deflection. The bridge load limit fast monitoring system comprises a bridge dynamic deflection monitoring device used for real-time monitoring of bridge inclination; a vehicle information acquisition device used for monitoring and identifying information related to vehicles passing a bridge; a data processing device used for calculating maximum concave downward deflection values, comparing the maximum concave downward deflection values with a bridge safety design deflection allowable value, and sending alarming information at the same time; an over-limit information alarming device used for displaying the information related to the over-limit vehicles according to the alarming information; a data remote transmitting device used for transmitting data related to the over-limit vehicles; and a data remote receiving device used for receiving the information related to the over-limit vehicles, and storing the data. The bridge load limit fast monitoring system is advantageous in that fast installation is realized without requiring blocking of traffic; the actual bearing capability of the bridge is not required to be detected and evaluated in advance; the bridge load limit fast monitoring system is used for load limit monitoring of old highway bridges or damaged highway bridges in meizoseismal areas, and occurrence of bridge collapse accidents is reduced.

Description

Bridge load limit fast monitored system based on dynamic deflection
Technical field
The present invention relates to a kind of monitoring system, specifically, is related to a kind of bridge load limit fast monitored system based on dynamic deflection Whether system, the truck entirety equivalent weight for running over bridge for identification has exceeded the actual safe bearing load scope of bridge, so as to right Old bridge or meizoseismal area have the bridge for damaging carries out limit for tonnage monitoring.
Background technology
Bridge load limit monitoring is to ensure that after old bridge or macroseism that the bridge that there is damage continues the important means used safely. Existing monitoring method is mainly based upon Dynamic Weighing Technology to realize bridge load limit, and its principle is by vehicle in measurement traveling Before and after tire pressure estimating the weight of vehicle stationary state.Dynamic load bearing system generally comprise a series of pressure inductors and Equipment data acquisition analyzing.Mainly there are quartz resonance, pressure drag bended plate type, piezoelectricity currently used for the pressure transducer of dynamic weighing Diaphragm type etc..Quartz resonance, pressure drag bending plate type sensor are traditional pressure transducer, technology maturation but are existed expensive The shortcomings of slow with dynamic response, it is very restricted in Modern High-Speed Highway Weigh-in-Motion Systems application.Piezoelectric membrane is passed Sensor, it is shown that outstanding advantage, occupies very big market application, and regrettably, it yet suffers from price costly, accurately The shortcomings of degree is relatively low, high on site operation requirement degree, Sensor temperature drift is larger, cross force affects larger to sensor.
The advantage of Dynamic Weighing Technology is that normal vehicle operation is not affected in weighing process, but there is also obvious shortcoming, Specifically, induction apparatuss need to be covered with below each track, install and debug trouble, the bridge being particularly on active service.In addition The method that bridge load limit is realized based on Dynamic Weighing Technology is based only on single load permissible value to judge whether current truck surpasses Carry, it is therefore desirable to which accurate evaluation goes out old bridge or there is the actual bearer ability of the bridge for damaging, and does not consider that truck travels position Put the incorrect and incorrect destruction for causing of speed.
Therefore, the cost for measuring how is reduced, for the limit for tonnage ability of bridge is disposably measured, so as to letter Just efficiently the limit for tonnage of bridge judged, becomes the technical problem of prior art urgent need to resolve.
The content of the invention
In view of this, the purpose of the present invention be for some old highway bridges provide it is a set of can Fast Installation limit for tonnage monitoring system System, it is ensured that these old bridges are not crushed by heavy truck.Another object of the present invention be occur for macroseism after, to may be Occur damaging but because a set of limit for tonnage of a large amount of highway bridge Fast Installations in earthquake region that disaster relief demand must be continuing with is supervised under severe earthquake action Examining system, it is ensured that disaster relief haulage truck safe passing and disaster relief life line it is unimpeded.
Specifically,
The invention discloses a kind of bridge load limit fast monitored system based on dynamic deflection, including bridge dynamic deflection monitoring dress Put 1, data processing equipment 2, vehicle information collecting device 3, and the information alarming device 4 that transfinites,
Wherein described bridge dynamic deflection monitoring device 1, for vehicle, dynamic deflection change to be monitored when the bridge, obtains To the dynamic deflection data at bridge each moment;
Vehicle information collecting device 3, for being acquired to the vehicle-related information that vehicle is travelled on bridge;
Data processing equipment 2, connects respectively with the bridge dynamic deflection monitoring device 1 and the vehicle information collecting device 3 Connect, for receiving the dynamic deflection data and described vehicle-related information at bridge each moment respectively, according to the bridge each moment Dynamic deflection data, calculate maximum recessed deflection value when vehicle is travelled, and maximum recessed deflection value is set with bridge security Meter amount of deflection permissible value is compared, if in the range of bridge security design amount of deflection permissible value, judging that vehicle does not transfinite, if Amount of deflection permissible value is designed beyond bridge security, then judges vehicle overload, send information warning, preserve the vehicle-related information, And the vehicle-related information is sent to into the information alarming device 4 that transfinites;
The information that transfinites alarming device 4, for receiving described in the simultaneously overrun vehicle of the transmission of display data processing apparatus 2 Vehicle-related information.
Further, the bridge dynamic deflection monitoring device includes multiple beam body gradient inductive transducers 11 and a number According to collection sub-device 12, the beam body gradient inductive transducer 11 is arranged at multiple key positions of bridge beam body, is gathered The fore-and-aft tilt degree of the key position, by the fore-and-aft tilt degree of each monitoring point of the synchronous acquisition of data acquisition sub-device 12, and root The dynamic deflection data at bridge each moment are calculated according to the fore-and-aft tilt degree.
Further, the beam body gradient inductive transducer 11 is servo-type inclinator, and the key position is at least 5 It is individual.
Further, the vehicle information collecting device 2 includes multiple cameras, image recognizer and corresponding shooting Machine fixing device, installs 1 video camera on each track, and vehicle-related information during vehicle current to bridge floor is monitored to be adopted Collection.
Further, the license plate number of the vehicle-related information including vehicle, vehicle, tire quantity, traveling-position and Traveling lane.
Further, the information alarming device 4 that transfinites is including field display screen.
Further, the monitoring system also includes electric supply installation 5, for providing power supply to whole monitoring system.
Further, the electric supply installation 5 is solar power supply apparatus, including solar panels, charging-discharging controller, electric power storage Pond and corresponding fixed mount.
Further, the monitoring system also includes remote data dispensing device 6 and data remote receiver 7, described Remote data dispensing device 6 is used to the vehicle-related information of overrun vehicle is transmitted to the remote data reception device 7, The remote data reception device 7 is used for the vehicle-related information of the overrun vehicle for receiving long-range transmission, and is preserved.
Further, the remote data dispensing device 6 includes wireless data transmission unit DTU and 4G cell phone card;It is described Remote data reception device 7 includes server and data base.
The present invention differentiates whether the truck equivalent weight of current bridge exceedes the reality of bridge based on dynamic deflection maximum Safe bearing capacity, rather than first judge the load-carrying of vehicle, then differentiate whether truck weight transfinites.Relative to prior art, The present invention has the advantage that:
(1) can Fast Installation, without the need for blocking traffic;
(2) without detection in advance and the actual bearer ability of assessment monitoring bridge;
(3) can be used for old highway bridge or meizoseismal area has the limit for tonnage monitoring of the highway bridge for damaging, reduce bridge collapse The generation of event.
Description of the drawings
By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the present invention, feature and Advantage will be apparent from, in the accompanying drawings:
Fig. 1 is that the device of the bridge load limit fast monitored system based on dynamic deflection according to a particular embodiment of the invention shows It is intended to;
Fig. 2 is the schematic diagram of bridge dynamic deflection monitoring device according to a particular embodiment of the invention;
Fig. 3 is the bridge load limit fast monitored system based on dynamic deflection of another specific embodiment of the invention Testing process.
1st, bridge dynamic deflection monitoring device;2nd, data processing equipment;3rd, vehicle information collecting device;4th, the information that transfinites is warned Device;5th, electric supply installation;6th, remote data dispensing device;7th, remote data reception device;11st, beam body gradient sensing sensing Device;12nd, data acquisition sub-device.
Specific embodiment
Below based on embodiment, present invention is described, but the present invention is not restricted to these embodiments.
In bridge health monitoring system and loading test, deformation is an extremely important index.Amount of deflection is used as deformation A kind of description form, can evaluate bridge quality and operation state, reflect the rigidity of bridge, be that bridge bulk deformation is most obvious Reaction.The especially dynamic deflection of bridge, even more bridge stiffness reacts the most in real time, be bridge under Vehicle Load most For real reaction.Under Vehicle Load, bridge structure is by deformation bigger under the effect of producing ratio identical dead load and should Power.Therefore, vehicle is measured by the dynamic deflection of bridge during bridge, by the dynamic deflection maximum and bridge dynamic deflection of change Design safety permissible value is compared, and can rapidly judge whether bridge load transfinites.And the measurement letter of bridge dynamic deflection Just, quickly, without blocking traffic.
Embodiment 1:
Referring to Fig. 1, the bridge load limit fast monitored system based on dynamic deflection according to a particular embodiment of the invention is shown The schematic device of system.The bridge load limit fast monitored system includes bridge dynamic deflection monitoring device 1, data processing equipment 2, car Information collecting device 3, and the information alarming device 4 that transfinites,
Wherein described bridge dynamic deflection monitoring device 1, for vehicle, dynamic deflection change to be monitored when the bridge, obtains To the dynamic deflection data at bridge each moment;
Vehicle information collecting device 3, for being acquired to the vehicle-related information that vehicle is travelled on bridge.It is exemplary , the vehicle-related information includes license plate number, vehicle, tire quantity, traveling-position and the traveling lane of vehicle.
Data processing equipment 2, connects respectively with the bridge dynamic deflection monitoring device 1 and the vehicle information collecting device 3 Connect, for receiving the dynamic deflection data at bridge each moment and the relevant information of vehicle respectively, according to moving for the bridge each moment Deflection data, calculates maximum recessed deflection value when vehicle is travelled, and maximum recessed deflection value is scratched with bridge security design Degree permissible value is compared, if in the range of bridge security design amount of deflection permissible value, judging that vehicle does not transfinite, if exceeded Bridge security designs amount of deflection permissible value, then judge vehicle overload, sends information warning, preserves the vehicle-related information, and will The vehicle-related information of overrun vehicle is sent to the information alarming device 4 that transfinites;
The information that transfinites alarming device 4, for the vehicle-related information of the transmission of receiving data processing meanss 2, and in phase The vehicle-related information of position display overrun vehicle is answered, to reach prompting car owner, or prompting road supervision and management personnel Carry out corresponding safe handling.
Corresponding position, can be the easy position for finding or observing of related personnel, for example, can be in bridge End of the bridge.
Therefore, it is of the invention by being measured by the dynamic deflection of bridge during bridge to vehicle, by the dynamic deflection of change most Big value is compared with bridge dynamic deflection design safety permissible value, can rapidly judge whether bridge load transfinites.
Further, referring to Fig. 2, the exemplary installation drawing of bridge dynamic deflection monitoring device, the bridge moving are shown Deflection monitoring device includes multiple beam body gradient inductive transducers 11 and a data acquisition sub-device 12, and the beam body is inclined Degree inductive transducer 11 is arranged at multiple key positions of beam body, the fore-and-aft tilt degree of the key position is gathered, by data The fore-and-aft tilt degree of each monitoring point of the collection synchronous acquisition of sub-device 12, and it is each to be calculated bridge according to dynamic fore-and-aft tilt degree The dynamic deflection data at moment.
Exemplary, the beam body gradient inductive transducer 11 is high-precision servo formula inclinator, the key position It is at least 5, at the key position that the high-precision servo formula inclinator is arranged in box beam, is collected by data collecting instrument The fore-and-aft tilt degree of each monitoring point, and data processing equipment 2 is sent to, the data processing equipment 2 is to each fore-and-aft tilt degree Data carry out Digital Signal Processing and filtering, and digital dynamic inclination signal is obtained into beam body each moment based on digital integration model Whole across dynamic deflection curve, and obtain vehicle in the maximum dynamic deflection value in whole process, i.e., maximum recessed deflection value.
The data processing equipment 2 can adopt G01NET bridge movings of the prior art when bridge dynamic deflection is calculated Deflection monitoring software, it is also possible to voluntarily write correlation computations program to realize.The quantity of key position and specific position can Set with the practical situation according to bridge.For example, when arranging, arranged according to the uniform length of monitored beam body, adopted Cement is firmly fixed on the concrete of box beam bottom surface.
The vehicle information collecting device 2 includes that multiple cameras, image recognizer and corresponding video camera fix dress Put, 1 video camera is installed on each track, relevant information during vehicle current to bridge floor is monitored collection, as vehicle Jing Out-of-date, vehicle information collecting device 2 is carried out using image recognizer by camera acquisition image information to the image for gathering Image recognition processing, obtains the vehicle-related information, and is transferred to the data processing equipment 2.
The information that transfinites alarming device 4, including field display screen, for example, can field usage water proof type warning LED show Screen, the alarming device 4 can be arranged on end of the bridge, it is also possible to be arranged on the relevant position in inspection post.
Further, also with electric supply installation 5, for providing power supply to whole monitoring system.In fig. 2, it is merely exemplary The electric supply installation 5 that marks electrically connect with data processing equipment 2, but this is only merely illustrative, electric supply installation 5 also with monitoring system in Other device electrical connections.
Exemplary, the electric supply installation 5 is solar power supply apparatus, including solar panels, charging-discharging controller, electric power storage Pond and corresponding fixed mount.
Further, the monitoring system also includes remote data dispensing device 6 and data remote receiver 7, described Remote data dispensing device 6 is used to the vehicle-related information of overrun vehicle is transmitted to the remote data reception device 7, The remote data reception device 7 is used for the described vehicle-related information of the overrun vehicle for receiving long-range transmission, and is protected Deposit.
Exemplary, the form that the remote data dispensing device 6 can be wireless or wired is transmitted, for example, bag Include wireless data transmission unit (Data Transfer unit DTU) and 4G cell phone card;The remote data reception device 7 is wrapped Server and data base are included, server receives the vehicle-related information of overrun vehicle, and is stored in data base.
Embodiment 2:
The present embodiment, shows the specific component devices of monitoring system, and the corresponding course of work.
Beam body gradient induction installation 1:Using more than 5 high-precision servo-type inclinators, such as QY types inclinator, as Beam body dynamic tilt degree measurement sensor.The beam body dynamic tilt degree measurement sensor is arranged in box beam, according to monitored The uniform length arrangement of beam body, is firmly fixed on the concrete of box beam bottom surface using cement.
Data acquisition sub-device 12:Using 24 high-precise synchronization data collecting instruments, such as G01NET-2 types dynamic data Acquisition Instrument, sample frequency is set to below 20Hz.
Data processing equipment 2:With ARM10 chips as core, supporting peripheral resistance and electric capacity are constituted;Or adopt low-power consumption Microcomputer, such as industrial PC GK1037.
Vehicle information collecting device 3:Using LHC-S02 information of vehicles monitor terminals, then supporting multiple stage wireless network intelligent Photographic head, such as LS-C4 types photographic head.
The information that transfinites alarming device 4:Using can field usage water proof type warning LED display, the DT types of such as Wei Sian Caution device.
Solar power supply apparatus 5:By one piece of 200W solaode, 12V200AHQ lead-acid accumulators, a charge and discharge The electric controller such as supporting cabinet such as C2C1R2 large current densities electric installation and installation shelf are constituted.Stable-pressure device, example can be included Such as adopt U250W stable-pressure devices.
Data remote transmission device 6:The DRF2617A-ZigBee being made up of for core CC2530 chips is adopted without traditional thread binding Put.
Remote data reception device 7:Using a set of common computer, and computer is arranged into 1 fixed IP or the office in unit Mapping one is to external port in the net of domain, then installs a set of vehicle information management software for possessing SQL network data bases, such as U.S. spring MQ-DZ vehicle information management softwares.
Referring to Fig. 3, the idiographic flow being monitored using the monitoring system is shown.
First, inquired about based on design data and obtain the safe permissible value of deflection of bridge span design, and be stored in data processing dress Put 2.
At the same time, when load-carrying vehicle is through bridge, bridge dynamic deflection monitoring device 1 and vehicle information collecting device 3 The dynamic deflection and information of vehicles of bridge are acquired respectively.
Bridge dynamic deflection monitoring device 1 arranges high-precision servo-type inclinator at 5 key positions of beam body, collection The fore-and-aft tilt degree of the key position, by the fore-and-aft tilt degree of each monitoring point of the synchronous acquisition of data acquisition sub-device 12, concurrently Data processing equipment 2 is given, the data processing equipment 2 carries out Digital Signal Processing and filter to each fore-and-aft tilt degrees of data Ripple, obtains whole across the dynamic deflection curve at beam body each moment based on digital integration model, so as to obtain by digital dynamic inclination signal Pick-up is moved in the maximum in whole process and scratches value.
Vehicle information collecting device 3 installs 1 video camera on each track, relevant information during vehicle current to bridge floor Collection is monitored, when vehicle is passed through, vehicle information collecting device 2 utilizes image by camera acquisition image information Evaluator carries out image recognition processing to the image for gathering, and obtains the vehicle-related information, and is transferred to the data processing Device 2.
Data processing equipment 2 is compared the maximum recessed dynamic value of scratching of real-time measurement with bridge security design amount of deflection permissible value Compared with, judge its ratio, if ratio is less than or equal to 1, illustrate in the range of bridge security design amount of deflection permissible value, to judge vehicle Do not transfinite;If ratio is more than 1, illustrate to design amount of deflection permissible value beyond bridge security, judge vehicle overload, send warning letter Breath, by the vehicle-related information information alarming device 4 that transfinites is sent to, and by transfiniting, information alarming device 4 is shown in end of the bridge Show, and preserve the vehicle-related information, the vehicle-related information is transmitted by remote data dispensing device 6 remote to data Journey reception device 7, is remotely being received and is being preserved by the remote data reception device 7.
Therefore, the present invention differentiates whether the truck equivalent weight of current bridge exceedes bridge based on dynamic deflection maximum Actual safe bearing capacity, is not first to judge the load-carrying of vehicle, then differentiates whether truck weight transfinites.Relative to existing skill Art, the present invention has the advantage that:
(1) can Fast Installation, without the need for blocking traffic;
(2) without detection in advance and the actual bearer ability of assessment monitoring bridge;
(3) can be used for old highway bridge or meizoseismal area has the limit for tonnage monitoring of the highway bridge for damaging, reduce bridge collapse The generation of event.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for those skilled in the art For, the present invention can have various changes and change.All any modification, equivalents made within spirit and principles of the present invention Replace, improve etc., should be included within the scope of the present invention.

Claims (10)

1. a kind of bridge load limit fast monitored system based on dynamic deflection, it is characterised in that:
The bridge load limit fast monitored system includes bridge dynamic deflection monitoring device (1), data processing equipment (2), vehicle letter Breath harvester (3), and the information alarming device (4) that transfinites,
Wherein described bridge dynamic deflection monitoring device (1), for vehicle, dynamic deflection change to be monitored when the bridge, obtains The dynamic deflection data at bridge each moment;
Vehicle information collecting device (3), for being acquired to the vehicle-related information that vehicle is travelled on bridge;
Data processing equipment (2), respectively with the bridge dynamic deflection monitoring device (1) and the vehicle information collecting device (3) Connection, for receiving the dynamic deflection data and described vehicle-related information at bridge each moment respectively, according to the bridge it is each when The dynamic deflection data at quarter, calculate maximum recessed deflection value when vehicle is travelled, and by maximum recessed deflection value and bridge security Design amount of deflection permissible value is compared, if in the range of bridge security design amount of deflection permissible value, judging that vehicle does not transfinite, such as Fruit designs amount of deflection permissible value beyond bridge security, then judge vehicle overload, sends information warning, preserves the related letter of the vehicle Breath, and the vehicle-related information is sent to the information alarming device (4) that transfinites;
The information that transfinites alarming device (4), for receiving and shows the overrun vehicle that the data processing equipment (2) is transmitted The vehicle-related information.
2. bridge load limit fast monitored system according to claim 1, it is characterised in that:
The bridge dynamic deflection monitoring device includes multiple beam body gradient inductive transducers (11) and a data acquisition dress Put (12), the beam body gradient inductive transducer (11) is arranged at multiple key positions of bridge beam body, gather the pass The fore-and-aft tilt degree of key position, by the fore-and-aft tilt degree of each monitoring point of data acquisition sub-device (12) synchronous acquisition, and according to institute State the dynamic deflection data that fore-and-aft tilt degree is calculated bridge each moment.
3. bridge load limit fast monitored system according to claim 2, it is characterised in that:
The beam body gradient inductive transducer (11) is servo-type inclinator, and the key position is at least 5.
4. bridge load limit fast monitored system according to claim 1, it is characterised in that:
The vehicle information collecting device (2) including multiple cameras, image recognizer and corresponding camera fixing device, 1 video camera is installed on each track, vehicle-related information during vehicle current to bridge floor is monitored collection.
5. bridge load limit fast monitored system according to claim 4, it is characterised in that:
The vehicle-related information includes license plate number, vehicle, tire quantity, traveling-position and the traveling lane of vehicle.
6. bridge load limit fast monitored system according to claim 1, it is characterised in that:
The information alarming device (4) that transfinites is including field display screen.
7. bridge load limit fast monitored system according to claim 1, it is characterised in that:
The monitoring system also includes electric supply installation (5), for providing power supply to whole monitoring system.
8. bridge load limit fast monitored system according to claim 7, it is characterised in that:
The electric supply installation (5) is solar power supply apparatus, including solar panels, charging-discharging controller, accumulator and corresponding Fixed mount.
9. bridge load limit fast monitored system according to claim 1, it is characterised in that:
The monitoring system also includes remote data dispensing device (6) and data remote receiver (7), and the remote data is sent out Device (6) is sent for the vehicle-related information of overrun vehicle to be transmitted to the remote data reception device (7), the number According to remote receiver (7) for receiving the vehicle-related information of the overrun vehicle of long-range transmission, and preserved.
10. bridge load limit fast monitored system according to claim 8, it is characterised in that:
The remote data dispensing device (6) is including wireless data transmission unit (DTU) and 4G cell phone card;
The remote data reception device (7) is including server and data base.
CN201710085019.4A 2017-02-17 2017-02-17 Bridge load limit fast monitoring system based on dynamic deflection Pending CN106644326A (en)

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CN107687924A (en) * 2017-08-28 2018-02-13 广州大学 The safe early warning method and system of a kind of bridge
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CN109596053A (en) * 2019-01-14 2019-04-09 中山大学 A method of measurement high-speed rail bridge vertically moves degree of disturbing
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CN112014043A (en) * 2020-08-19 2020-12-01 江苏方天电力技术有限公司 Digital large plate girder deflection measuring device and method
CN114001887A (en) * 2021-10-26 2022-02-01 浙江工业大学 Bridge damage assessment method based on deflection monitoring
CN114417468A (en) * 2022-01-11 2022-04-29 哈尔滨工业大学 Intelligent automobile load limiting method for sub-health highway bridge

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CN107248016A (en) * 2017-07-06 2017-10-13 内蒙古大学 Applied to the bridge information evaluation transmitting device of bridge and using its warning system
CN107687924B (en) * 2017-08-28 2019-05-03 广州大学 A kind of safe early warning method and system of bridge
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CN111429720A (en) * 2020-03-18 2020-07-17 李鹏飞 Construction temporary steel structure safety management informatization method
CN112014043A (en) * 2020-08-19 2020-12-01 江苏方天电力技术有限公司 Digital large plate girder deflection measuring device and method
CN114001887A (en) * 2021-10-26 2022-02-01 浙江工业大学 Bridge damage assessment method based on deflection monitoring
CN114001887B (en) * 2021-10-26 2024-02-27 浙江工业大学 Bridge damage assessment method based on deflection monitoring
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Application publication date: 20170510