Media Teknik Sipil, Vol 5, No 2 (2005)

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Pemilihan Metode Perbaikan Tanah untuk Kawasan Pantai (Studi Kasus: Di Wilayah Pelabuhan Tanjung Perak Surabaya)

Indra Nurtjahjaningtyas


Industrial estate in Surabaya and its suburban is planned to be developed on the coast area because it is impossible to expand Industrial estate at the Hinterland. This master plan is constrained by ground soil condition at that location. Especially, at Harbor site, it is formed from tickly soft-soil-layer.  This type of soil will make a high consolidation if embankment is loaded. This research aims to find a suitable method for soil improvement on area. The method used for soil consolidation is preloading with direct loading. This method was conducted at two phases. Then, Vertical drain system was used to accelerate compaction time. Furthermore, five alternatives of soil consolidation method (i.e. stone columns, geotextile, combination of stone column and geotextile, micropile and combination of micropile and geotextile) were conducted to avoid sliding. The research result concludes that the most suitable method for this area is vertical drain, with combination of geotextile and micropile (alternative 5).

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