Fundamental Study on Compressive Stress Estimation Based on Vibration Measurement of Steel Plates

Abstract

Studied herein is the evaluation of compressive stresses in steel plated structures based on the localized out-of-plane vibration of the structural plates. It is verified that the frequency of the out-of-plane vibration of steel plates decreases as the compressive stress in the plates increases. By this, the geometrical dimensions and constraints of the plate elements are discussed in order to assess the feasibility of compressive stress evaluation in an actual bridge regarding the structural stability. It is concluded that the geometry of the structural member may not influence localized out-of-plane vibration in a circular membrane at arbitrary selected locations within plate elements when the out-of-plane displacement along the annulus is constrained.