Keywords

Bayesian Dynamic Linear Model, Hydraulic Season Time, Monitoring, Bridge, Masonry, Underpinning

Abstract

The Pont de Pierre of Bordeaux, France, built between 1810 and 1821, was the first bridge erected across the Garonne in Bordeaux. Since the beginning of the construction, each pier of the bridge is affected by excessive settlements. Six of them (Piers 1 to 6) have even been reinforced by micropiles in 1993-1994 (Piers 1 to 4) and 2002 (Piers 5 and 6). The settlement and overtopping measurements available before and after reinforcement are analyzed using two complementary models (Hydrostatic Season Time and Bayesian Dynamic Linear Model) to highlight the benefits of the work and analyze the effect of external stresses on the structure. Moreover, data analysis provides a convincing tool for detecting anomalies during reinforcement and maintenance works.

DOI