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foreng (Civil/Environmental) (OP)
25 Aug 04 15:36
I am currently looking at alternative bridge foundations for temporary bridge applications. The bridge span will range from 6-12 m with loading for off highway vehicles with a GVW 100 Ton or 90,680 kg. It has been suggested that a single row of wire mesh gabions might be an option.  The bridge would bear on a timber sill to help distribute the weight. Upon contacting my supplier I was informed that the use of gabions as abutments was not recommended as they may fail under load. I have found other reference that say it is a viable alternative. I am looking for information on the use of gabions as abutments, are they prone to failure?
Are there situations where they could be used (load range)?
Is there design information for this type of application?
BigH (Geotechnical)
25 Aug 04 16:04
I've seen them used as abutments in permanent bailey bridge works in Laos - but loadings would be quite low - normal lorry and probably not overloaded.  Not what you need but some info anyway.
TTK (Structural)
25 Aug 04 20:13
100 tons is a significant load and getting gabions to work as a gravity abutment with direct bearing from the deck will be difficult.

I would recommend using the gabions as a facing on an MSE type abutment using whatever reinforcing straps are available (steel, geogrid etc...).  The superstructure loads should be transferred to the reinforced soil behind the gabions to eliminate the possibility of crushing or bursting the gabions.  
VoyageofDiscovery (Structural)
26 Aug 04 9:42
Hi foreng,

Try log cribs.

Regards

VOD
cage (Structural)
26 Aug 04 11:01
I agree with voyage, timber crib would be the way to go.

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