Structural state evaluation method for freight railway simply supported girder bridge

A simply supported girder bridge, structural state technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as misreporting, instantaneous abnormal monitoring data, and missing bridge structural damage.

Active Publication Date: 2018-12-04
CHONGQING JIAOTONG UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing monitoring methods evaluate the state of the bridge based on the measured values ​​of the collected bridges. This method will have the following two problems: (1) When the bridge structure is intact, the monitoring data will be abnormal due to the large load. Misreporting occurs; (2) When the bridge structure is damaged, the damage to the bridge structure is underreported due to the small load

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
  • Structural state evaluation method for freight railway simply supported girder bridge
  • Structural state evaluation method for freight railway simply supported girder bridge
  • Structural state evaluation method for freight railway simply supported girder bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0053] like figure 1 As shown, the present invention discloses a flow chart of a method for assessing the structural state of a freight railway simply supported girder bridge, comprising the following steps:

[0054] S101. Obtain the real-time load value of the target simply supported girder bridge and the real-time monitoring value corresponding to the real-time load value, and perform finite element simulation on the healthy target simply supported girder bridge based on the real-time load value to obtain the real-time The real-time theoretical value corresponding to the monitoring value, calculate the real-time monitoring ratio value η, the real-time monitoring ratio value η is the ratio of the real-time monitoring value to the real-time theoretical value, and...

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

No PUM Login to view more

Abstract

The invention discloses a structural state evaluation method for a freight railway simply supported girder bridge. The method comprises: acquiring a real-time load value of a target simply supported girder bridge and a real-time monitoring value corresponding to the real-time load value; obtaining a state evaluation interval ([eta]1,[eta]2), wherein [eta]1 is an optimum state value; calculating astate score based on the state evaluation interval ([eta]1, [eta]2) and a real-time monitoring ratio value [eta]; generating state evaluation information of a target simply supported girder bridge based on the state score. The method uses a proportional coefficient of a measured value and a theoretical value as an index for evaluating whether the simple supported girder bridge structure is intactor not, and can prevent false report when the simple supported girder bridge structure bears high load and is intact in structure, and can also prevent false report when the simple supported girder bridge structure bears low load and is damaged.

Description

technical field [0001] The invention relates to the technical field of engineering monitoring, in particular to a method for evaluating the structural state of a simply supported beam bridge on a freight railway. Background technique [0002] Simply supported girder bridges are an important part of freight railway lines, and their safety status has always been the focus of engineering personnel. In the normal operation process, vehicle-bridge coupling, material aging of simply supported beam bridges, environmental erosion, accidental natural factors, human factors, etc. will all cause damage to the structure of simply supported beam bridges. If the management and maintenance work is not in place, the long-term development It will lead to the occurrence of structural accidents of simply supported beam bridges. [0003] In the existing technology, engineers have proposed a bridge health monitoring system, which can monitor the environmental indicators and status indicators of...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F2111/10G06F30/23
Inventor 杨建喜戴森昊祁德龙沙高岑吴佳坤
Owner CHONGQING JIAOTONG UNIVERSITY
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