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Depth damage functions for road infrastructure

Depth damage functions for road infrastructure

Depth damage functions for road infrastructure

(OP)
I am tasked with determining general depth-damage functions for road assets including tunnels, culverts, roads and bridges for the primary road network of a country in the Balkans.

I will be receiving flood hazard maps containing flood depth at various return intervals. I also have the locations of the aforementioned assets including the entire road network. Finally it would not be difficult to obtain a DEM of the area. From these materials (especially the flood hazard map) I would have to determine percent damage for each road asset. This could be a percentage of replacement cost or an index for actual structural damage.

I spent a lot of time looking for ready-made damage depth functions and looked through the HAZUS docs, HEC-FIA user manual, Riskscape docs and global databases such as the one by Huizinga "Global flood depth damage functions database". I also sought to find the 2007 "Flood damage functions for EU member states" but this appears to be a confidential report.

In all the available literature I could find, the damage-depth function concept appears limited to computing damage for buildings and businesses. There is little on bridges and even less on culverts and roads.

For our project the buildings are of no consequence. How can I come up with thought out damage depth functions to apply for transportation network assets in this project?

Thanks

RE: Depth damage functions for road infrastructure

suggest you hire a hydrologist / hydraulic engineer to help

RE: Depth damage functions for road infrastructure

I would think the task would be very tough to do, and very situational, and if you were able to do it, it wouldn't be very likely to give you information that's useful on a per-event basis. Depth isn't what destroys road infrastructure, velocity is what does it. And there is no good relationship between depth and velocity across sample areas, because the velocity is topo dependent. It's also dependent on how the infrastructure is designed, which will vary regionally. There are other confounding factors as well.

If you want to get the closest estimate possible, I think you'd have to look at a specific subset of historical data that most closely matches your country, in terms of topo, climate, and construction methodology, and see what happened there.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

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