Thank you everyone for your input. Unfortunately we did not win the tender. Our solution, albeit extreme ended up being a major excavation (2m x 2m) slot under the abutment to enable excavation down to rock/suitable material then creating a pile from there up to the underside of the abutment...
Thank you guys,
The problem bridge(s) are in Melbourne, Victoria on the Western Highway. The underlying soils are expansive clays. The road authority, VicRoads, has had issues of on some earlier bridges where the settlement has caused drmatic issues. The bridges in question were constructed...
We are exploring how we can install new piles under an existing bridge abutment, this is in order to provide support directly to the rock below the fill rather than rely on the abutment sitting on a reinforced earth fill embankment. The bridge is a freeway structure with super T beams and is...