Investigation of Actual In-Plane Geometric Imperfections of Steel Tied-Arch Bridges

The complex global analysis of the steel tied-arch bridges may require specific data in some cases, e.g., residual stress or real geometrical imperfections. presented research is focused on investigation actual in-plane shape bridges. To obtain shapes arches existing bridges, 3D terrestrial laser scanning was applied. Data were then investigated as a group order to find relationship within bridges’ vertical Firstly, detailed surveyed points selected position mathematically determined estimate measured data. next step included creation curves presenting course using numerical modelling. After pre-programming, calculations and related modelling performed Matlab environment. These modelled arch-bridges courses approximated by regression analysis. approximating from represent theoretical arches. difference between processed values be examined Subsequently, paper presents comparisons evaluation individual imperfections comparison measurement with standardised