Monte carlo simulation-based life-cycle assessment method for an old roof steel truss

When it comes to existing buildings subjected to conversion of use, it is necessary to know the structural residual bearing capacity. Structural diagnostics provides rather comprehensive damage patterns if surveys are detailed and accurate. In order to optimise the experimental survey process, a simulation of the structural life-cycle could be useful. Considering the roof steel truss of the old slaughterhouse, this paper investigates the life-cycle of the structure during different stages of the building lifespan along with the damages caused by aging and negligence. The periods analysed are: from construction to disuse and from disuse to today. The aim is to identify critical situations, to assess the residual life of the system, to plan possible retrofit strategies for the building conversion. The procedure proposed is based on a Monte Carlo simulation implemented with a damage law. This integrated method enables to consider different environmental conditions affecting the structure during its life.