Fiber bragg grating based bridge safety monitoring structure

A fiber grating and safety monitoring technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as inconvenience in bridge detection, and achieve the effect of facilitating monitoring and ensuring safety in use.

Pending Publication Date: 2020-07-28
深圳特发东部服务有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bridge safety monitoring structure bas

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fiber bragg grating based bridge safety monitoring structure
  • Fiber bragg grating based bridge safety monitoring structure
  • Fiber bragg grating based bridge safety monitoring structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example one:

[0032] The bridge span 30 includes a main arch ring 31 and a plurality of suspension rods 32. The upper part of the suspension rod 32 is fixedly arranged with the main arch ring 31, and the lower part of the suspension rod 32 is fixedly arranged with the bridge deck 20 along the length of the main arch ring 31. , A plurality of booms 32 are arranged in order at intervals; the boom 32 is provided with a second acceleration sensor 60, and the second acceleration sensor is arranged in signal connection with the server; in the bridge, the boom 32 is also prone to stress changes, passing the second acceleration sensor 2. Acceleration sensor to realize monitoring of boom 32 and improve the safety of the bridge.

[0033] The boom 32 has an inner wall 34, and the inner wall 34 of the boom 32 is provided with two correspondingly arranged fixed posts 33. Both ends of the second acceleration sensor 60 are respectively fixed on the fixed posts 33. The second acceleration ...

Example Embodiment

[0041] Embodiment two:

[0042] The bridge deck 20 includes a plurality of main beams 22, a plurality of connecting rods 29, and a panel body 21. The panel bodies 21 are laid out in a flat manner. Along the length direction of the panel body 21, the main beams 22 are arranged in sequence at intervals. The top of the pylon is fixedly arranged with the panel body 21, the bottom of the main beam 22 is fixedly arranged with the bridge pier 10, the two ends of the connecting rod 29 are respectively butt-fixed to the adjacent main beam 22, and the lower part of the boom 32 is fixedly arranged with the main beam 22; The main girder 22 is provided with a third acceleration sensor; in the bridge, the main girder 22 is also prone to stress changes. The third acceleration sensor is used to monitor the main girder 22 to ensure the safety of the main girder 22.

[0043] The main beam 22 is provided with a fiber grating stress and strain sensor 40, and the third acceleration sensor is replaced w...

Example Embodiment

[0054] Embodiment three:

[0055] The bridge safety monitoring structure based on fiber grating includes a data collector, fiber grating stress-strain sensor 40, fiber grating temperature sensor, first acceleration sensor 50, second acceleration sensor 60, third acceleration sensor, fourth acceleration sensor 27, and fifth acceleration sensor. The acceleration sensor 28 is connected to the data collector respectively; the data collector and the server are arranged in a wireless signal connection; the data collector is installed on the bridge to facilitate data collection, ensure the accuracy and timeliness of the collection, and at the same time, facilitate data Centralized processing, and then transmitted to the server.

[0056] The bridge span 30 is provided with a wind speed and direction sensor 70, and the wind speed and direction sensor 70 is arranged in a wireless signal connection with the server; the wind speed and direction sensor 70 is used to measure wind speed and wind ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to the technical field of bridge safety monitoring, and discloses a fiber bragg grating based bridge safety monitoring structure, which comprises piers, a bridge deck and bridgespans, and is characterized in that the piers are used for supporting the bridge deck and the bridge spans; the bridge piers are in butt joint with the bridge spans to form skewback parts, fiber bragggrating strain sensors and fiber bragg grating temperature sensors are arranged at the skewback parts, and first acceleration sensors are arranged on the bridge deck; and the fiber bragg grating stress-strain sensor, the fiber bragg grating temperature sensors and the first acceleration sensors are in signal connection with a server. According to the bridge deck vibration, the first accelerationsensor outputs a voltage signal in direct proportion to the vibration quantity and transmits the voltage signal to the server to monitor the bridge deck; through the fiber bragg grating strain sensorsand the fiber bragg grating temperature sensors, once stress changes occur to the skewback part, the corresponding fiber bragg grating strain sensor transmits signals to the server, remote monitoringis achieved, great convenience is brought to monitoring of a bridge, and the use safety of the bridge is guaranteed.

Description

technical field [0001] The patent of the present invention relates to the technical field of bridge safety monitoring, specifically, to a bridge safety monitoring structure based on fiber gratings. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. [0003] At present, bridges are divided according to their stress characteristics, including girder bridges, arch bridges, rigid frame bridges, suspension bridges, composite system bridges (cable-stayed bridges), etc. [0004] If closed traffic is used to detect and maintain the arch bridge, it is neither realistic nor economical; therefore, in the prior art, the arch bridge is lacking in monitoring, and the use safety of the arch bridge cannot be guaranteed. Contents of the invention [0005] The purpose of the present invention is to provide a bridge safety monitoring structure based on fiber gratings, aiming to solve the p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E01D19/00E01D19/02E01D19/12E01D19/16G01B11/16G01K11/32G01L1/24G01P5/00G01P13/02G01K11/3206
CPCE01D19/00E01D19/02E01D19/125E01D19/16G01L1/242G01B11/16G01K11/32G01P5/00G01P13/02
Inventor 刘良古前彬李嘉桐
Owner 深圳特发东部服务有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap