斜拉索PE护套微裂纹检出方法及系统
By combining wideband composite excitation and circumferential flexible sensing array with multi-layer judgment logic, microcracks in the PE sheath of cable-stayed bridges are identified and a growth-environment coupling model is constructed. This solves the problems of high missed detection rate and high false judgment rate in existing technologies, and realizes efficient and accurate diagnosis and dynamic risk assessment of microcracks in the PE sheath of cable-stayed bridges.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG GANGXIN DETECTION TECH
- Filing Date
- 2026-03-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies suffer from high rates of missed detection and false positives when detecting microcracks in the PE sheath of cable stays, and are unable to dynamically assess risks. Traditional methods cannot achieve efficient and accurate early identification and dynamic risk assessment.
A broadband composite excitation signal was used to excite the multi-physics response of the PE sheath of the cable-stayed bridge. Characteristic parameters were collected by a circumferential flexible sensor array. By combining the spatial gradient mutation algorithm and multi-layer judgment logic, microcracks were identified and confirmed. A crack growth-environment coupling model was constructed for dynamic risk assessment.
It enables efficient and accurate diagnosis of microcracks in the PE sheath of cable stays, significantly reducing the rate of missed detections and false alarms. It can dynamically assess the risk evolution trend of cracks and provide a reliable technical support for preventive maintenance of bridges.
Smart Images
Figure CN121805421B_ABST