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Perbandingan Safety Factor dan Nilai Ekonomis Dinding Penahan Tanah Gravitasi Terasering Dengan Tanpa Terasering.

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Názov: Perbandingan Safety Factor dan Nilai Ekonomis Dinding Penahan Tanah Gravitasi Terasering Dengan Tanpa Terasering. (Indonesian)
Autori: Kusuma Wiranata, I. Made, Sinarta, I. Nengah, Ariyana Basoka, I. Wayan
Zdroj: Journal of Syntax Literate; Sep2025, Vol. 10 Issue 9, p7942-7952, 11p
Predmety: SAFETY factor in engineering, VALUE (Economics), RETAINING walls, FINITE element method, NUMERICAL analysis, TERRACING, SLOPE stability
Geografický termín: BALI Island (Indonesia)
Abstract (English): This research is motivated by the significant increase in tourism sector development in Bali, with the number of non-star hotel rooms increasing from 32,810 rooms in 2021 to 36,886 rooms in 2023. Land limitations in South Bali have prompted investors to shift toward building hotels and villas in the central Bali hilly regions, which necessitate slope stability analysis using gravity-type retaining walls (DPT). The objective of this study is to compare the effectiveness of safety factors and economic value between continuous gravity DPT and terraced DPT at various height and slope angle variations. The research method uses numerical analysis with the Finite Element Method (FEM) through the Plaxis application to evaluate safety factors on four gravity DPT models with variations in the number of terraces, terrace height, and slope angles of 45° and 60° on 10-meter high slopes. Economic evaluation was conducted by comparing DPT cross-sectional areas, excavation volumes, and fill volumes. The results show that the safety factor for continuous DPT is 5-15% higher compared to terraced DPT, but requires a cross-sectional area up to 145% larger and excavation volume 162%-225% greater. The implications of this research indicate that terraced DPT is more economically efficient despite having slightly lower safety factors, making it a more practical alternative for slope stability management at heights around 10 meters in Bali's hilly regions. [ABSTRACT FROM AUTHOR]
Abstract (Indonesian): Penelitian ini dilatarbelakangi oleh peningkatan signifikan pembangunan sektor pariwisata di Bali, dengan jumlah kamar hotel nonbintang yang meningkat dari 32.810 kamar pada tahun 2021 menjadi 36.886 kamar pada tahun 2023. Keterbatasan lahan di Bali Selatan mendorong investor beralih ke pembangunan hotel dan vila di wilayah perbukitan Bali Tengah, yang menuntut analisis stabilitas lereng menggunakan dinding penahan tanah (DPT) tipe gravitasi. Tujuan penelitian ini adalah membandingkan efektivitas safety factor dan nilai ekonomis antara DPT gravitasi menerus dengan DPT terasering pada berbagai variasi tinggi dan sudut lereng. Metode penelitian menggunakan analisis numerik dengan Finite Element Method (FEM) melalui aplikasi Plaxis untuk mengevaluasi faktor keamanan pada empat model DPT gravitasi dengan variasi jumlah terasering, tinggi terasering, dan sudut lereng 45° dan 60° pada lereng setinggi 10 meter. Evaluasi ekonomis dilakukan melalui perbandingan luas penampang DPT, volume galian, dan timbunan. Hasil penelitian menunjukkan bahwa faktor keamanan pada DPT menerus lebih tinggi 5-15% dibandingkan DPT terasering, namun memerlukan luas penampang yang lebih besar hingga 145% dan volume galian yang lebih besar 162%-225%. Implikasi penelitian ini menunjukkan bahwa DPT terasering lebih efisien secara ekonomis meskipun memiliki safety factor yang sedikit lebih rendah, sehingga dapat menjadi alternatif yang lebih praktis untuk penanganan stabilitas lereng pada ketinggian sekitar 10 meter di wilayah perbukitan Bali. [ABSTRACT FROM AUTHOR]
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Databáza: Complementary Index
Popis
Abstrakt:This research is motivated by the significant increase in tourism sector development in Bali, with the number of non-star hotel rooms increasing from 32,810 rooms in 2021 to 36,886 rooms in 2023. Land limitations in South Bali have prompted investors to shift toward building hotels and villas in the central Bali hilly regions, which necessitate slope stability analysis using gravity-type retaining walls (DPT). The objective of this study is to compare the effectiveness of safety factors and economic value between continuous gravity DPT and terraced DPT at various height and slope angle variations. The research method uses numerical analysis with the Finite Element Method (FEM) through the Plaxis application to evaluate safety factors on four gravity DPT models with variations in the number of terraces, terrace height, and slope angles of 45° and 60° on 10-meter high slopes. Economic evaluation was conducted by comparing DPT cross-sectional areas, excavation volumes, and fill volumes. The results show that the safety factor for continuous DPT is 5-15% higher compared to terraced DPT, but requires a cross-sectional area up to 145% larger and excavation volume 162%-225% greater. The implications of this research indicate that terraced DPT is more economically efficient despite having slightly lower safety factors, making it a more practical alternative for slope stability management at heights around 10 meters in Bali's hilly regions. [ABSTRACT FROM AUTHOR]
ISSN:25410849
DOI:10.36418/syntax-literate.v10i9.61754