Design using Flood Risk Management methods

The innovative design approach made available by using Flood Risk Management methods (methodology that integrates hydraulic sizing with the assessment of performance characteristics) – which is a significant novelty in the field of design of large-sized linear infrastructures as well as of maintenance of existing infrastructures – has been introduced in the design of the hydraulic supervision of railway lines and of the regions they cross. The opportunity of applying it derives from the use of the most state of the art techniques for environmental remote sensing in land analysis (ground laser scanner measurements and LiDAR flights) as well as the use of modern 2D hydrological/hydraulic calculation programs for assessing the behaviour of flooded waterways. Recently, the study of geomorphological processes and of river morphology have been added to the project standards in order to take into account the development trends of the waterways.
Hydraulic risk analysis for the infrastructure then leads to the identification of intervention priorities both in terms of scheduled maintenance and in terms of overhauling of existing works, where necessary, via the assessment of the corresponding attention level, defined using a matrix system.
Thanks to this original approach, it will be possible to start inserting into future works the SuDS (Sustainable Drainage Systems) characteristics that until now have not been applied in the defence of railway structures against floods.
These innovative methods are increasingly improving the iterative process of Integrated Design, that blends compliance with requirements typical of railway infrastructures and compatibility needs with the layout of the land, providing in particular the plano-altimetric constraints to be taken into consideration in order to ensure its correct environmental integration.