Axle safety health assessment system and method based on axle coupling analysis

Abstract

The invention discloses an axle safety health assessment system and method based on axle coupling analysis, and relates to the field of bridge health monitoring. The axle safety health assessment system comprises an axle coupling analysis subsystem, a bridge health situation assessment system and a traffic safety assessment system, wherein the axle coupling analysis subsystem utilizes actual measurement data of a bridge health monitoring system to correct a bridge finite element model to obtain a bridge benchmark finite element model, and the bridge benchmark finite element model is used for carrying out axle coupling vibration analysis calculation to obtain a theoretical calculating value under an equal condition of the actual measurement data of the bridge health monitoring system; the bridge health situation assessment system compares the actual measurement data with the theoretical calculating value to assess the bridge health situation; the traffic safety assessment system utilizes the theoretical calculating value obtained through the axle coupling vibration analysis calculation and actual measurement bridge vibration data to assess a situation of the traffic safety. The theoretical data and the actual measurement data are combined to realize a purpose that the bridge health and the traffic safety are quantitatively analyzed and assessed, and the reliability of an assessment result is improved.

Description

technical field [0001] The invention relates to the field of bridge health monitoring, in particular to a vehicle-bridge safety and health assessment system and method based on vehicle-bridge coupling analysis. Background technique [0002] From the end of the last century, the focus of structural control research has turned to structural monitoring systems. Over the past ten years, bridge completion monitoring has gradually received attention and has been greatly developed. With the softness of long-span bridges and the complexity of form and function, the bridge structure monitoring system has become a research hotspot in the academic and engineering circles at home and abroad. my country has installed bridge health monitoring systems on some long-span bridges that have been built or are under construction to monitor bridge structures for a long time, but there is no relatively perfect method for bridge health assessment and traffic safety assessment. [0003] At present...

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Problems solved by technology

[0004] (1) The threshold value is often a limit value. In daily operation, this limit value is generally not reached, or even far less than this limit value. When the measured value or trend value exceeds the threshold value range, the bridge structure may have suffered significant damage;

[0005] (2) When the train load is small and the vibration response of vehicles and bridges is large, that is, when there is a large difference between the measured value and the real value, the measured value may still be within the threshold range, but in fact the measured value has deviated from the specification value

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