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Kalman filtering steel truss bridge structure parameter monitoring method based on adaptive control

A Kalman filter and adaptive control technology, applied in the fields of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inability to capture in real time

Pending Publication Date: 2022-02-11
HOHAI UNIV
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  • Application Information

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Problems solved by technology

However, the components of this harmonic are not necessarily present for the entire duration of this time series and cannot be captured in real time

Method used

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  • Kalman filtering steel truss bridge structure parameter monitoring method based on adaptive control
  • Kalman filtering steel truss bridge structure parameter monitoring method based on adaptive control
  • Kalman filtering steel truss bridge structure parameter monitoring method based on adaptive control

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0034] In the long-term service process, due to the effects of natural factors such as climate and environment and the increasing traffic flow and the increasing number of heavy vehicles and overweight vehicles passing the bridge, the bridge structure continues to grow with the age of the bridge, and the safety and use of the structure Performance degradation is bound to occur. The invention proposes a Kalman filter steel truss bridge structural parameter monitoring method based on adaptive control. Based on historical measurements of damage-sensitive features involved in the state-space dynamic model, the method is used to generate real-time estimates of these features as well as the derivation of criteria, which can then be used to form control bounds for statistical control to detect any anomalies in selected features.

[0035] The present inve...

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Abstract

The invention discloses a Kalman filtering steel truss bridge structure parameter monitoring method based on adaptive control. The method comprises the following steps: firstly, determining mechanical parameters such as mass and rigidity of a steel truss bridge structure; secondly, speed, acceleration, displacement and ground acceleration vibration response data of a truss where the steel truss bridge structure is located are collected; and then tracking the change of the speed, acceleration, displacement and rigidity of the structure by using a Kalman filtering algorithm, performing envelope control by combining a dynamic statistical process algorithm, and automatically alarming when the rigidity generates a change value and exceeds an envelope control line. According to the method, the Kalman filtering algorithm is optimized so that the Kalman filtering algorithm can achieve the change of the predicted rigidity on the steel truss bridge structure, and the actual engineering requirements are met; compared with a traditional single threshold algorithm, the defect of a fixed threshold is overcome, the fixed threshold is optimized into dynamic control, reference is provided for performance evaluation of the steel truss bridge structure, and management and maintenance work of the steel truss bridge structure can be effectively served.

Description

technical field [0001] The invention discloses a method for monitoring structural parameters of a steel truss bridge, and in particular relates to the field of bridge structure health monitoring and safety early warning. Background technique [0002] At this stage, the number of super-large bridges in my country is constantly increasing. Steel truss continuous girder bridges are widely used because of their reasonable structure, clear force, economical cost, and beautiful appearance. Steel truss bridges are now gradually moving towards standardized and assembled roads. The prefabricated steel truss bridge structure will be damaged to varying degrees due to its construction, installation and corrosion degradation. These damages cannot be detected and repaired in time, which will directly affect the bearing capacity and safety of the fabricated steel truss bridge structure, and ultimately cause a series of problems in the process of design, construction and final bridge comple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F119/14
CPCG06F30/13G06F30/23G06F2119/14
Inventor 曹茂森王泽雨李帅张鑫
Owner HOHAI UNIV
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