Orientation about the project
A new 100% waterproof was to be established
safety construction of jet piles which was supposed to be the basis for
new culvert through Block S by Ahus. The building was
founded with piles to solid rock there
safety structures were to be established.
The security structure was to be complete with walls and
floor and have a clear width and height equal to 2.5 m x 3.5 m. It was set
requirements for zero sets, deformations, shakes or
vibrations during the execution, since the hospital was supposed to be in
full operation during the construction period.
Basic conditions
The total soundings were carried out, which showed depths to rock on
approx. 16 – 19 m. The loose masses were assumed to consist of medium solids
to firm silty clay. The total soundings showed that during approx. 10
– 12 m depth was a transition to coarser masses (the moraines).
Under the floor in Block S, there was supposed to be a drainage layer
puck.
Solution
It was established approx. 75 jet piles and a total of approx. 290
running meters. The diameter varied from 1.2 to 2.0 m. Mutually
c/c distance between the piles was from 1.2 to 1.7m. It was also
installed 4 EC1 piles to rock to support parts of it
the existing construction.
Conclusion
No heaving or settling was observed during or after
production. The excavation of the basement showed that the jet piles
constituted a dense construction.
Nye Ahus
