Self-sensing FRP rib embedded with piezoelectric ceramic sensor and using method thereof

Abstract

The invention discloses a self-sensing FRP rib embedded with a piezoelectric ceramic sensor and a using method thereof. The self-sensing FRP rib embedded with the piezoelectric ceramic sensor includesan FRP rib and a sensor assembly; the sensor assembly includes a piezoelectric ceramic sensor and a BNC connector; the piezoelectric ceramic sensor includes a piezoelectric ceramic sheet and a coppershell; and the piezoelectric ceramic sensor is embedded in the rabbet of the FRP rib and fixed through a packaging material layer. The self-sensing FRP rib embedded with the piezoelectric ceramic sensor has a novel structural design and can effectively realize real-time and online monitoring. The using method of the self-sensing FRP rib embedded with the piezoelectric ceramic sensor comprises thefollowing steps of: a, preparing the piezoelectric ceramic sensor; b, connecting the piezoelectric ceramic sensor with the BNC connector; c, selecting the type of the FRP rib and opening the rabbet;d, performing packaging material ratio test and proportion selection; e, embedding the piezoelectric ceramic sensor and filling the packaging material; and f, monitoring. By using the using method ofthe self-sensing FRP rib embedded with the piezoelectric ceramic sensor, the problems of FRP rib wear and FRP rib-concrete interface monitoring can be solved, the assessment can be accurate, and the safety performance of the concrete structure can be enhanced.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a self-sensing FRP bar embedded with a piezoelectric ceramic sensor and a method for using the same. Background technique [0002] FRP bars are widely used in the field of civil engineering, especially in reinforced concrete structures. It should be pointed out that under the long-term natural environment, the FRP reinforced concrete structure is easy to wear the FRP reinforcement and degrade the performance of the interface between the FRP reinforcement and the concrete, resulting in a decrease in the ultimate bearing capacity of the reinforced concrete structure and a shortened normal service life. [0003] In view of the above situation, it is of great significance to effectively monitor the wear of FRP bars and the damage of the interface between FRP bars and concrete in real time to evaluate the safety performance of reinforced concrete structures and avoid structu...

AI Technical Summary

Problems solved by technology

[0006] Another object of the present invention is to provide a method for using self-sensing FRP bars embedded with piezoelectric ceramic sensors, which can effectively solve the problems of FRP bar wear and FRP bar-concrete interface monitoring, and can accurately evaluate reinforced concrete structures The safety performance of the structure, so that the corresponding remedial measures can be taken before the occurrence of structural accidents, so as to prevent catastrophic structural accidents

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