압전 필름을 이용한 교량 탄성 받침의 동적 하중 모니터링

Abstract

In this study, the applicability of PVDF films of dynamic load monitoring in a Bridge Elastomeric bearing was investigated. A relationship between the strain and the voltage response of a PVDF film was analytically derived. Free vibration test on a steel cantilever beam was performed and vibration response of the beam was measured both by a conventional foil ESG (ESG) and a PVDF film. Strain-voltage relationship obtained from the experiment was compared with the analytic relationship. In addition, the Bridge Elastomeric bearing for the Static/Dynamic load test of load-strain relationship found by doing. Through Strain-voltage relationship and Load-strain relationship to Load-voltage relationship is derived. Good agreement between the analytic and experimental relationships was observed. It was found that a tailored PVDF film can monitoring the dynamic load of a Bridge Elastomeric bearing .