Soil improvement and construction methods in peat - Geotechnics of Organic Soils and Peat - page 154

Figure 6.31 Typical section of the AuGeo pile system ( after Abdullah et al ., 2003).
Figure 6.32 Concept of MRSC ( after Suleaman, 2003).
is based on a calculation of soil parameters and prescribed performance. The preload-
ing further prestresses and prestrains the columns and the surrounding soil matrix to
increase the stiffness and strength of this foundation system (Sulaeman, 2003).
Preload piers. or geopiers, is another example of a floating foundation technique
for stabilizing soft soil, including peat (Lien et al ., 2002; Biringen and Edil, 2003).
These piers are inserted in the ground and expanded to about three times their origi-
nal cross-sectional area. As a result of this expansion the surrounding soil is radially
stressed, which initiates consolidation and general stiffening of the surrounding soil. If