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STUDI DESAIN REKLAMASI TELUK LAMONG DENGAN MENGGUNAKAN SISTEM PERBAIKAN TANAH VIBRO COMPACTION DAN PREFABRICATED VERTICAL DRAIN DENGAN METODE ELEMEN HINGGA

STUDY DESIGN LAMONG BAY RECLAMATION CONSTRUCTION USING GROUND IMPROVEMENT VIBRO COMPACTION AND PREFABRICATED VERTICAL DRAIN WITH FINITE ELEMENT METHOD

Undergraduate Theses from JBPTITBPP / 2017-12-08 13:05:05
Oleh : REY ANDRESON (NIM : 15012079), S1 - Civil Engineering-FTSL
Dibuat : 2017, dengan 14 file

Keyword : Breakwater, Reklamasi, Prefabricated Vertical Drain, gained strength, konsolidasi, likuifaksi, Vibro Compaction, PLAXIS; Breakwater, reclamation, Prefabricated Vertical Drain, gained strength, consolidation, liquefaction, Vibro Compaction, PLAXIS

Struktur breakwater dibangun pada area reklamasi Teluk Lamong karena tinggi muka air tanah pada proyek ini cukup tinggi sehingga timbunan harus ditopang oleh breakwater agar timbunan bisa berdiri pada timbunan bertahap. Karena lapisan tanah terdiri atas tanah lunak, maka struktur breakwater harus diberikan perkuatan agar tanah tidak runtuh, yaitu konstruksi matras bambu dan cerucuk bambu di bawah struktur breakwater.


Perbaikan tanah reklamasi menggunakan metode Prefabricated Vertical Drain dengan konfigurasi segitiga dengan spasi sebesar 1 meter. Konstruksi dari timbunan dilakukan secara bertahap agar timbunan tidak runtuh dan terjadi kenaikan daya dukung (gained strength) melalui proses konsolidasi. Penggunaan timbunan dengan pasir mengakibatkan potensi terjadinya likuifaksi, sehingga diperlukan sistem perbaikan tanah dengan menggunakan Vibro Compaction.


Pemodelan dengan metode elemen hingga dan analisis stabilitas lereng akibat beban timbunan akan menggunakan software PLAXIS 2D. Hasil analisis stabilitas lereng oleh PLAXIS 2D menunjukkan untuk kondisi timbunan bertahap, gempa, dan masa layan memenuhi persyaratan nilai SF minimum.

Deskripsi Alternatif :

Breakwater structure is built on a reclamation area in Lamong Bay because the ground water level is high enough so the sand embankment must be supported by breakwater to make the embankment still stands in the staged construction. Because the subsoil consists of soft soil, the structure of the breakwater should be given the reinforcement so that the soil does not collapse, such as the construction of a bamboo matrass and bamboo cluster under the structure of the breakwater.


Ground improvement in this reclamation area using Prefabricated Vertical Drain. triangular configuration with spacing of 1 meter. Construction of the sand embankment is done in stages so the embankment will not collapse and increase bearing capacity (gained strength) through the consolidation process. Because of the material of the embankment is sand, so there is a potential for liquefaction, therefore the embankment need the improvement using Vibro Compaction.


PLAXIS 2D will give the model for finite element method and slope stability analysis. The results of slope stability analysis by PLAXIS 2D shown the embankment conditions, earthquakes, and service life meets the requirements of SF minimum value.

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