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Bridge structural damage identification method and system

A bridge structure and damage identification technology, which is applied in the testing of machines/structural components, measuring devices, elastic testing, etc., can solve problems such as unsatisfactory practical application effects and uncertain response of bridge structures, and achieve stable monitoring signals Reliable, guaranteed safe operation, and low impact coefficient

Active Publication Date: 2018-02-13
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a large number of scholars at home and abroad have carried out the research, development and practical engineering application of the bridge structure health monitoring system, the safety assessment and damage identification are mainly based on theoretical results. Due to the complexity of the actual bridge structure and field environmental conditions, and the incompleteness of measured data The uncertainty of the bridge structure response caused by external disturbances, etc., make the actual application effect of the existing research results still have many unsatisfactory places.

Method used

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  • Bridge structural damage identification method and system
  • Bridge structural damage identification method and system
  • Bridge structural damage identification method and system

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 Shown, be an embodiment of the present invention, comprise:

[0039] (1) The deflection data acquisition device can realize real-time monitoring of bridge deflection information at multiple measuring points, and can ensure the accuracy and reliability of bridge deflection monitoring data.

[0040] (2) The bridge structure health state evaluation module stores preset standard values ​​for bridge structure health state evaluation and deflection prediction functions. After receiving and processing the deflection data, the system compares it with the evaluation standard to evaluate the health status of the bridge structure, judge whether it is necessary to carry out damage identification and issue a safety alarm. figure 2 is the flow chart of the bridge structure health assessment module, ε in the figure 1i and...

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Abstract

The invention discloses a bridge structure damage identification method and system. The method includes: collecting environmental variables and deflection information of the bridge structure; evaluating the health status of the bridge structure, judging whether damage identification is required and issuing a safety alarm; using a damage position identification model The damage position is identified; the damage degree is identified by using the damage degree identification model. The system includes a data acquisition module, a health status evaluation module, an alarm module, a damage location recognition module, a damage degree recognition module and a display module. The invention has a simple structure and is easy to implement, is applicable to various bridge structures, can provide bridge management departments with timely and detailed bridge structure health status information, and ensures safe operation of the bridge structure.

Description

technical field [0001] The invention relates to the technical field of bridges. Background technique [0002] In the past 20 to 30 years, various bridge accidents have occurred frequently in our country, and the more serious one is the sudden collapse of bridges, which has caused heavy casualties and property losses. There are many reasons for the collapse of the bridge, but it is certain that before the collapse of the bridge, due to the long-term action of various dynamic and static loads and the influence of various adverse environmental factors on certain key parts, the fatigue of the bridge structure, corrosion and aging of materials, As well as the lack of timely discovery and maintenance, the damage of the bridge structure will accumulate during the service period, and its stiffness will decline, which will seriously affect the service life of the bridge structure, and even seriously exceed the limit safety range of the design, leading to accidents. . It can be seen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00G01M99/00
CPCG01M5/0008G01M99/007
Inventor 任剑莹苏木标李韶华李文平艾庆华
Owner SHIJIAZHUANG TIEDAO UNIV
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