A Time-Variation Analysis Method and System for Interface Damage in Composite Bridges

By constructing a stress distribution analysis mechanism for a virtual rolling contact zone and a nonlinear mapping operator, the problems of environmental interference and material creep in the time-varying analysis of interface damage in composite bridges were solved, achieving high-precision interface damage identification and time-varying analysis.

CN121919632BActive Publication Date: 2026-06-30CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP CO LTD +3
View PDF 3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP CO LTD
Filing Date
2026-03-26
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies struggle to accurately reconstruct the interfacial mechanical evolution process in the health monitoring of composite bridges. In particular, they cannot effectively isolate the benchmark shift caused by environmental interference and material creep in long-term monitoring scenarios, leading to the accumulation of errors in the analysis results and a decrease in prediction accuracy.

Method used

A stress distribution analysis mechanism based on the virtual rolling contact zone is constructed. Through dynamic residual filtering, thermal stress feature matrix compensation and nonlinear mapping operator, interface damage characteristics are accurately extracted. Combined with interface neutral point spatial vector tracking and rolling bite-in critical criteria, high-precision analysis of aliasing monitoring data is achieved.

Benefits of technology

It achieves high-precision identification of interface damage in a low-power edge monitoring unit, reduces hardware computing power dependence, ensures the physical robustness and logical consistency of analysis results, and can capture the critical inflection point of interface stiffness from quantitative to qualitative change.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN121919632B_ABST
    Figure CN121919632B_ABST
Patent Text Reader

Abstract

This invention relates to the field of electrical digital data processing technology and discloses a combined bridge interface damage time-varying analysis method and system, comprising: acquiring slip sequence and temperature gradient data of the joint interface; extracting high-frequency dynamic response signals through dynamic residual filtering; calculating displacement compensation based on thermal stress feature matrix, removing the compensation from the dynamic response signal to determine the net slip characteristic value; mapping the slip spatial distribution difference to a topological feature vector using an interface stress distribution mapping operator; analyzing the unsteady oscillation characteristics of the dynamic response signal and determining the cementation failure probability; and outputting damage analysis indicators in combination with the topological feature vector. This invention achieves accurate decoupling of environmental thermally induced displacement interference and structural damage signals, eliminates the influence of non-damage factors, captures the critical point of stiffness degradation using the interface topological evolution mechanism, improves the reliability of early interface void identification, and supports bridge safety assessment.
Need to check novelty before this filing date? Find Prior Art