Bauer has announced that it has successfully completed the first stage of slope stabilisation scheme using a “unique concept” at a new research facility in Zurich, Switzerland.
The new laboratory complex at ETH Zürich called for stabilisation of a 110m long north eastern slope.
“A unique concept for stabilising the slope had to be developed for this,” said Bauer project manager Niklas Haag.
Implenia constructed a back-anchored intermittent bored pile wall to secure the slope during the foundation work with around 800 temporary anchors placed.
“However, to keep the slope-side terrain free of bulky and heavy stabilising elements in the future, the extreme forces needed to be absorbed by an independent supporting structure,” explained Haag.
According to Haag, the solution used has never been delivered on this scale before.
After excavating a 20m basement pit, installation of 14 diaphragm wall segments up to 26m deep perpendicular to the slope were completed to make up the lower part of the protection system. The wall segments will be pre-stressed in spring next year and the slope stabilisation supporting structure will be built.