The 2019 World Congress on Advances in Structural Engineering and Mechanics (ASEM19)
Abstract
Steel strands are widely used as important structural members of bridges. This study proposes a new method for the probabilistic range prediction of the ultimate strength of corroded seven-wire strands. For the task, first, finite element (FE) models are built for several types of corroded steel wires. Second, according to the corresponding FE analysis results, a nonparametric surrogate model is constructed using Gaussian process regression (GPR). Third, employing the Monte Carlo simulation (MCS) with a theoretical strand model, the probabilistic range of the ultimate strength of a corroded steel strand is provided. The proposed method is applied to several actual specimens, and the prediction results show good agreement with the test results.
Publisher
Int’l Association of Structural Eng. & Mechanics (IASEM)