Civil engineering structure health state monitoring method and system

Abstract

The invention belongs to the technical field of civil engineering, particularly relates to a civil engineering structure health state monitoring method and system and provides a civil engineering structure health state monitoring method and system which can timely monitor, analyze and perform early warning on the health state of a civil engineering structure. According to the technical scheme, the method comprises the steps as follows: S101, establishing a database for storing material characteristic parameters of the civil engineering structure; S102, acquiring stress data of monitored parts of structural elements at multiple time points through sampling; S103, processing the stress data at the multiple time points and calculating equivalent stress values corresponding to the multiple time points; S104, calculating damage values corresponding to the multiple time points according to the equivalent stress values at the multiple time points; S105, analyzing the equivalent stress values and the damage values of the monitored parts of the structural elements at the current time points and giving an alarm when the equivalent stress values and the damage values exceed preset thresholds.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a method and system for monitoring the health status of civil engineering structures. Background technique [0002] In the field of civil engineering, the basic process of structural fatigue assessment and analysis based on the health status monitoring system is as follows: figure 1 As shown, the monitoring data is obtained first, and then standard samples are made according to these data, and the strain spectrum or sample spectrum is obtained according to some counting methods or statistical methods, and then the traditional fatigue accumulation method based on the number of cycles is used for these processed strain spectra or sample spectra. Criteria for the calculation of cumulative fatigue damage. [0003] In the above process, on the one hand, a large amount of precious information will inevitably be lost in the process of monitoring information proces...

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Problems solved by technology

[0003] In the above process, on the one hand, a large amount of precious information will inevitably be lost in the process of monitoring information processing; on the other hand, if the sample spectrum is used, the sample needs to be updated every time after a period of operation; therefore, this Traditional structural fatigue analysis methods can neither meet the timeliness requirements of health status monitoring system information analysis, nor can it reflect the superiority of continuous information collection of health status monitoring system. There is a considerable time difference between calculations, which greatly reduces the effectiveness of the structural health status monitoring system, and the resulting delayed warning will also have certain security vulnerabilities

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