Environmental Engineering Reference
In-Depth Information
FIGURE 8.52
Anchored sheet-pile wall retaining clayey silts interbedded with sands in excavation adjacent to the ocean
behind dike in upper right of photo. Wellpoint header pipe in lower left and well-point discharge in lower right.
Underpinning
wall
Pipe-beam
roof
Intermediate
column
FIGURE 8.53
Slurry wall construction for five-story-
high metro station (Antwerp, Belgium).
After pipe-beam roof is installed and
underpinned, and partial excavation
underneath is completed, deeper parts of
the station structure are built starting
with slurry trench foundation walls.
Intermediate columns are also founded
on deep slurry walls. Floor slabs are cast
in place. (From Musso, G.,
Civil
Engineering,
ASCE, 79-82, 1979. Adapted
with the permission of the American
Society of Civil Engineers.)
Underpinning
wall
Slurry
wall
Slurry-wall
excavation
filter layers directly beneath the floor to intercept the water and carry it to subdrainage
pipes and finally to an outlet as illustrated in
Figure 8.54.
The outlet can be drained by
gravity if the topographic configuration of the adjacent land permits, but more often the
