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All Journal Sinergi International Journal of Informatics, Economics, Management and Science Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil
Harianto, Yudi
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Neuroscience Physics

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Effect of near-surface heterogeneities on the pore-water pressure distribution and slope stability Gofar, Nurly; Pangestika, Ega Nanda; Harianto, Yudi; Gumay, Herdian; Satyanaga, Alfrendo
SINERGI Vol 28, No 2 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2024.2.012

Abstract

Seepage and slope stability are important problems analyzed in geotechnical engineering. Conventionally, the analysis is performed in conditions where the soil is intact. However, near-surface soil is subjected to various conditions that lead to heterogeneity, for example, the presence of cracks in clay, relics in weathered rock, and plant roots. The presence of cracks and other forms of heterogeneity on the near-surface layer increases the rainfall infiltration into the slope and changes the pore water pressure distribution accordingly. Water infiltration increases the pore water pressure, raises groundwater level, and decreases the matrix suction of unsaturated soils - which is a critical factor for the stability of slopes. This study aims to evaluate the effect of varying permeability of near-surface soil on the rainwater infiltration to slope and, subsequently, the safety factor. In this case, the near-surface soil is modeled as a layer with higher permeability. Numerical analysis performed in this study using SEEP/W and SLOPE/W indicated that considering this condition results in a higher safety factor of the slope because the higher permeability resulting from heterogeneity helps dissipate pore water pressure, which is critical in maintaining the slope stability during heavy rainfall.
Analysis of Jakarta Provincial Government Budget System Implementation Harianto, Yudi; Sari, Putri Novita; Pratiwi, Yuni; Hidayat, Arief
International Journal of Informatics, Economics, Management and Science Vol 2 No 2 (2023): IJIEMS (August 2023)
Publisher : Sekolah Tinggi Manajemen Informatika dan Komputer Jayakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52362/ijiems.v2i2.1162

Abstract

Technology has now reached its fourth stage, known as the Industrial Revolution 4.0, which is marked by the development of sensor technology and the digitalization era. One of the innovations made by the Provincial Government in the era of the Industrial Revolution 4.0, was the implementation of ERP using e-Monev and LPSE. This type of research uses a qualitative approach with a descriptive research design. Data collection was carried out trough in-depth interviews and document analysis. Data analysis used a content analysis approach. Understanding of budget allocations made by the DKI Jakarta Provincial Government, experiences and views of stakeholders regarding the implementation of the DKI Jakarta Provincial Government budget system, efficiency and effectiveness of the budget system in managing public finances, as well as supporting factors, obstacles, and challenges in the preparation and implementation of the system budget. A significant budget allocation for priority sectors, namely education and infrastructure. There are also challenges in controlling operational spending, and the need to improve performance indicators to more accurately measure the achievement of regional development goals. The implication of this research is to increase transparency, accountability, and effectiveness of budget management in the Provincial Government of DKI Jakarta.
Pengaruh Campuran Abu Terbang dan Kapur terhadap Daya Dukung Tanah Dasar Dewi, Anggi Purnama Sari; Akbar, Syah Alam; Harianto, Yudi; Gofar, Nurly
Dinamika Teknik Sipil: Majalah Ilmiah Teknik Sipil Vol. 18/No. 2/Desember 2025
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/dts.vi.9855

Abstract

Kinerja perkerasan jalan sangat dipengaruhi oleh kualitas material tanah dasar. Tanah lempung kurang baik digunakan sebagai tanah dasar karena mempunyai daya dukung yang rendah dan sensitif terhadap perubahan kadar air akibat curah hujan maupun genangan. Makalah ini menyajikan hasil studi laboratorium mengenai pengaruh penambahan abu terbang dan kapur  terhadap tanah lempung untuk dijadikan material tanah dasar jalan perkotaan.  Nilai Plastisitas dan California Bearing Ratio (CBR) digunakan sebagai indikasi peningkatan kekuatan tanah dasar pada kondisi tidak direndam dan direndam. Dalam penelitian ini dilakukan penambahan 5% kapur dan 5 – 30% abu terbang. Hasil pengujian menunjukkan nilai optimum penambahan abu terbang sebesar 25%. Uji batas Atterberg menunjukkan bahwa penambahan 5% kapur dan 25% abu terbang menurunkan indeks plastisitas tanah dari 23,60% kepada 17,72%, sehingga dapat mengurangi pengaruh air terhadap tanah. Hasil pengujian CBR menunjukkan bahwa penambahan 5% kapur dan 25% abu terbang memberikan nilai CBR tertinggi sebesar 8,27% dan nilai pengembangan terendah yaitu 0.84%.
Co-Authors Abda Abda Akbar, Syah Alam Alfrendo Satyanaga Dewi, Anggi Purnama Sari Gumay, Herdian Nurly Gofar, Nurly Pangestika, Ega Nanda Putri Novita Sari Yuni Pratiwi