| dc.description.abstract | Palembang - Indralaya toll road that located in Kab. Ogan Komering Ilir, Sout Sumatera
was built on soft soil. Soft soil with its characteristic such as low permeability, high compressibility
and low bearing capacity is not suitable for construction since soil settlement can occured and
become a threat for the structure above it. So, a soil improvement action is needed in order to meet
the criteria of the construction.
The method that will be used is combination of vacuum consolidation method with PVD
and soil preloading with PVD to accelerate the consolidation of the soil. This method is done by
applying the vacuum pressure to the soil through the PVD that has been installed. It goes the same
with preloading where the soil fill will act as additional load to the soil. This research aim is to
determine the consolidation time and soil settlement value.
The result for this research that were obtained shows that combination of vacuum
consolidation method and prefabricated vertical drain can accelerate the consolidation time. The
result is soil settlement of 0.387 m for 47 days on 90% consolidation by using PVD triangle pattern
with 1 m space while without PVD took 21.9 years. From the result, the PVD triangle pattern with
1 m space is the most effective PVD pattern. | en_US |
