Bridge structure damage identification method and system

A bridge structure and damage identification technology, which is applied in the testing of machines/structural components, instruments, elastic testing, etc., can solve the problems of bridge structural response uncertainty and unsatisfactory practical application effects, and achieve stable and reliable monitoring signals , Guarantee safe operation, easy to achieve effect

Active Publication Date: 2017-04-05
SHIJIAZHUANG TIEDAO UNIV
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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

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  • Bridge structure damage identification method and system
  • Bridge structure damage identification method and system
  • Bridge structure damage identification method and system

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Embodiment Construction

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

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

[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 evaluation module stores the preset standard values ​​of the bridge structure health evaluation and the prediction function of deflection. After the system receives the deflection data information and processes it, compares it with the evaluation standard, evaluates the health of the bridge structure, and judges whether it is necessary to identify damage and issue a safety alarm. figure 2 Is the flow chart of the bridge structure health assessment module, the ε in the figure 1i And ε 2i (i = 1, 2, ..., n, i...

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Abstract

The invention discloses a bridge structure damage identification method and system; the method comprises the following steps: collecting flexibility information of environment variables and a bridge structure; evaluating the health state of the bridge structure, determining whether the bridge structure needs damage identification or not, and sending safety alarms; using a damage position identification model to identify damaged positions; using a damage level identification model to identify the damage level. The system comprises a data acquisition module, a health state evaluation module, an alarm module, a damage position identification module, a damage level identification module and a display module. The bridge structure damage identification system is simple in structure, easy to realize, suitable for various bridge structures, and can timely provide detail bridge structure health state information for a bridge management department, thus ensuring safety operation of the bridge structures.

Description

Technical field [0001] The invention relates to the technical field of bridges. Background technique [0002] In the past two to three decades, various bridge accidents have occurred frequently in our country. The more serious one is the sudden collapse of the bridge, 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 effects of various dynamic and static loads and the influence of various adverse environmental factors, the fatigue of the bridge structure, the 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 life 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, resulting in sudden accidents. . It can be seen that when...

Claims

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Application Information

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IPC IPC(8): G01M5/00G01M99/00
CPCG01M5/0008G01M99/007
Inventor 任剑莹苏木标李韶华李文平
Owner SHIJIAZHUANG TIEDAO UNIV
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