Estimation of Thickness of Steel Specimens Simulating Corroded Steel Sheet Pile by One-Dimensional Heat Conduction Analysis

Abstract

The corrosion of an agricultural steel sheet pile is evaluated by its plate thickness, which is one of the useful parameters for corroded condition of in-service structures. By the authors, results of this paper lead to development of estimation method for plate thickness in service steel sheet pile, which is based on non-contact detection. In this study, experiments and one-dimensional heat conduction analysis was conducted by model steel plates, which was set to several experimental conditions in different thickness of model steel plates. The heat flex in steel sheet pile is affected by its thickness. The one-dimensional heat conduction model is used by two layers of corroded steel specimens simulating steel sheet piles and glass beads simulating back soil. As a result, from the viewpoint of heat flux, it is confirmed that the thinner the plate thickness of the steel material, the larger the heat flux per unit width that contributes to the temperature rise. Therefore, the largely temperature rise is detected in thinner the plate thickness condition, and a negative correlation is obtained between the plate thickness and the amount of temperature change.