Fundamental study on estimation of torsional deformation during bridge construction based on Bayesian inverse problem

Abstract

In bridge construction, managing the height of the bridge deck is conducted through leveling surveys, which require significant effort. Recent advances in sensing technology offer the potential to reduce this burden. This study proposes a method for estimating vertical displacement for the height management including torsional deformation during bridge construction. The estimation was examined using both a detailed method based on 3D finite element analysis and a simplified method based on beam theory. The proposed method suggests the possibility of capturing small differences in displacement between the left and right sides of the bridge by both methods.