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All Journal Jurnal Teknik Pengairan: Journal of Water Resources Engineering Construction and Material Journal Jurnal Artesis
Trisno Lestari, Rini
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Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Materials Science & Nanotechnology Transportation

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ANALISIS STABILITAS TIMBUNAN PROYEK PEMBANGUNAN JALUR GANDA JALAN KERETA API (KA) SEPANJANG-MOJOKERTO Wulan Anggarita, Ovilia; Putra Purnama, Paksitya; Nurtjahjaningtyas, Indra; Trisno Lestari, Rini
Construction and Material Journal Vol. 6 No. 2 (2024): Construction and Material Journal Vol. 6 No. 2 November 2024
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v6i2.6630

Abstract

The construction of the Sepanjang-Mojokerto railway double track is an initiative to address the growing demand for railway transportation infrastructure. During the building of the double-track railroad, it is anticipated that the rail structure will endure the weight of traversing trains; hence, a stability study for settlement and sliding is essential. The settlement of the embankment between KM 49+500 and KM 49+750 was studied using sondir and borlog correlation data and then a geoslope model to see how stable the embankment was against sliding. The calculated findings indicate a reduction of 0.49 m to 1.49 m. The decrease is unsafe as it is above the permissible limit of 20 cm; achieving a decline to U90% requires around 0.9 years—15 years. Consequently, it is imperative to expedite the reduction using PVD and preloading. The PVD installation employs a triangle configuration with a spacing of 1.5 meters, requiring a duration of 16 to 20 weeks to achieve a 90% reduction. The stability control of the embankment against sliding on the railroad body yielded a safety factor (SF) value ranging from 1.63 to 2.33. SF > 1.5 indicates that the SF value is secure, surpassing the permissible threshold.
Impact of Land Use Changes on Irrigation Systems and Water Balance in the Cimanuk River Basin Ariyani, Dwi; Trisno Lestari, Rini; Prautama Dewi, Atri; Yasmin Kanwar, Sonia; Putri Kirani, Fachriza
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.9

Abstract

Water resources are crucial for life and the economy, especially in the Cimanuk River Basin, where irrigation supports agricultural productivity. Population and economic growth have led to significant changes in land use that impact irrigation systems. The shift from agricultural to non-agricultural land, along with factors such as urbanization, flooding, drought, and pests, has reduced the area of farmland and decreased rice productivity in West Java. This study aims to analyze changes in land use and their effects on the irrigation system in the Cimanuk River Basin. The research methods include analyzing combined data such as remote sensing, statistical tests, evapotranspiration calculations, and irrigation water needs to assess the water balance of irrigation based on water availability and demand. The findings reveal a significant decrease in agricultural land coverage, from 37.48% of the total area of the Cimanuk River Basin in 2000 to 22.79% in 2023. This change in land cover affects irrigation needs and impacts the water balance in the Cimanuk River Basin, resulting in a water deficit between availability and irrigation needs. The water deficit occurs during peak dry months, such as July, with a maximum deficit of 215.72 m³/second, indicating that the water requirements for irrigation are often not met optimally.
The ANALISIS PERBANDINGAN PERKUATAN DINDING PENAHAN TANAH DENGAN SHEET PILE Trisno Lestari, Rini; Herzanita Y, Ayu; Zuhdan, Muhammad Ghinva
Construction and Material Journal Vol. 7 No. 1 (2025): Construction and Material Journal Vol. 7 No. 1 Mei 2025
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/cmj.v7i1.7075

Abstract

Natural disasters are recurring challenges experienced by countries worldwide, including Indonesia. One of the most common natural disasters in Indonesia is landslides, which frequently occur in various regions each year. Soil plays a critical role in construction, as stable and strong soil conditions are essential for structural integrity. However, poor soil conditions are often encountered, particularly on sloped terrain, increasing the risk of landslides. This study aims to analyze the Safety Factor (SF) of a slope using software based on the Limit Equilibrium Method (LEM). The SF value serves as a reference for further analysis; when SF < 1, reinforcement is required to support the applied loads. The slope stability analysis in this study yielded an SF value of 0.52. Based on this result, two reinforcement methods were evaluated: Retaining Wall and Corrugated Concrete Sheet Pile (CCSP). The analysis indicated that the Retaining Wall failed to adequately support the slope. In contrast, the CCSP reinforcement provided sufficient stability, with a Safety Factor of 1.587. Therefore, the Corrugated Concrete Sheet Pile (CCSP) is recommended as a safe and effective slope reinforcement solution.
ANALISIS STABILITAS LERENG DENGAN GEOGRID DAN BRONJONG Dedy Pratama1, Dimas; Trisno Lestari, Rini; Purnama Putra, Paksitya
Jurnal ARTESIS Vol. 3 No. 2 (2023): JURNAL ARTESIS
Publisher : Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/artesis.v3i2.5930

Abstract

Lokasi penelitian ini berada Purwakarta dimana lokasi konstruksi peternakan ini berada tepat di tepi lereng tebing. Kondisi stabilitas lereng pada lokasi penelitian ini tidak stabil, hal ini dikarenakan pada saat masa konstruksi tanah dan bangunan tersebut amblas dan terjadi kelongsoran. Berdasarkan hal tersebut perlu dilakukan perkuatan lereng untuk meningkatkan daya dukungnya. Analisis yang pertama dilakukan yaitu dengan mengecek apakah lereng tersebut aman atau tidak dengan menggunakan software berbasis Limit Equilibrium Method (LEM) dimana dihasilkan nilai Safety Factor (SF) sebesar 1,06 yaitu kurang dari 1,5 dari SF rencana. Berdasarkan analisis tersebut diperlukan alternatif metode perkuatan lereng, metode perkuatan lereng yang digunakan pada penelitian ini yaitu dengan alternatif pertama dengan menggunakan material geogrid, alternatif kedua dengan material bronjong dan alternatif ketiga yaitu kombinasi keduanya. Alternatif pertama yaitu perencanaan geogrid dilakukan dengan menghitung kebutuhan yang akan dipasang dimana dihasilkan Tipe geogrid Biaxial Geogrid 200/50 F dengan nilai Ultimate Tensile Strength (MD/CM) sebesar 200/50 kN/m dengan jarak pemasangan 0,5 meter dengan nilai MR komulatif sebesar 2,512.820513 kN/m sebanyak empat lapisan dengan total panjang geogrid yang dibutuhkan sebesar 10,8791 m. Alternatif kedua yaitu dengan material bronjong yang dianalisis dengan software dihasilkan nilai safety factor sebesar 0,20 sehingga kurang aman. Alternatif yang ketiga yaitu dengan menggunakan kombinasi kedua nya dimodelkan dengan software dihasilkan deformasi sebesar 0,07127 meter. Pemilihan analisis perhitungan dari ketiga alternatif tersebut dihasilkan alternatif yang ketiga yaitu dengan kombinasi kedua material geogrid dan bronjong.
ANALISIS PENURUNAN DAN STABILITAS TIMBUNAN JALAN JALUR GANDA KERETA API DI MOJOKERTO : Studi Kasus: Jalur Kereta Km 36+900 - Km 37+100 Riyasyul Huda, Ahmad; Purnama Putra, Paksitya; Wicaksono, Luthfi Amri; Trisno Lestari, Rini
Jurnal ARTESIS Vol. 4 No. 1 (2024): JURNAL ARTESIS
Publisher : Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/artesis.v4i1.6779

Abstract

Pembangunan Jalur Ganda Sepanjang - Mojokerto menjadi salah satu upaya pemerintah dalam meningkatkan penggunaan kereta api sebagai moda transportasi penumpang maupun barang. Lokasi pembangunan double track kereta api KM36+900 - KM 37+100 berada di Kabupaten Sidoarjo merupakan daerah yang terbentuk akibat proses sedimentasi yang termasuk didalam formasi alluvium (Qa). Tanah aluvial merupakan salah satu jenis lapisan tanah dari proses endapan, dibentuk dari lumpur dan pasir halus yang mengalami erosi tanah karena aliran sungai. Tanah aluvial atau tanah berpasir lainnya memiliki daya dukung rendah yang memungkinkan terjadinya penurunan tanah dan mempengaruhi kestabilan timbunan. Oleh karena itu, penelitian ini menggunakan metode analisa terhadap besar penurunan konsolidasi, waktu konsolidasi, dan stabilitas timbunan, untuk mendapatkan kestabilan tanah yang sesuai dengan angka safety factor (SF) diperlukan perbaikan terhadap tanah dasar dan timbunan. Preloading merupakan salah satu metode untuk meningkatkan daya dukung terdapap tanah dasar dan geotextile sebagai perkutan timbunan untuk mencapai angka keamanan SF > 1,5. Sedangkan untuk mengatasi lama waktu penurunan karena konsolidasi dapat menggunakan Prefabicated Vertical Drains (PVD).
Impact of Land Use Changes on Irrigation Systems and Water Balance in the Cimanuk River Basin Ariyani, Dwi; Trisno Lestari, Rini; Prautama Dewi, Atri; Yasmin Kanwar, Sonia; Putri Kirani, Fachriza
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 15 No. 2 (2024)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2024.015.02.9

Abstract

Water resources are crucial for life and the economy, especially in the Cimanuk River Basin, where irrigation supports agricultural productivity. Population and economic growth have led to significant changes in land use that impact irrigation systems. The shift from agricultural to non-agricultural land, along with factors such as urbanization, flooding, drought, and pests, has reduced the area of farmland and decreased rice productivity in West Java. This study aims to analyze changes in land use and their effects on the irrigation system in the Cimanuk River Basin. The research methods include analyzing combined data such as remote sensing, statistical tests, evapotranspiration calculations, and irrigation water needs to assess the water balance of irrigation based on water availability and demand. The findings reveal a significant decrease in agricultural land coverage, from 37.48% of the total area of the Cimanuk River Basin in 2000 to 22.79% in 2023. This change in land cover affects irrigation needs and impacts the water balance in the Cimanuk River Basin, resulting in a water deficit between availability and irrigation needs. The water deficit occurs during peak dry months, such as July, with a maximum deficit of 215.72 m³/second, indicating that the water requirements for irrigation are often not met optimally.
Co-Authors Ayu Herzanita Dedy Pratama1, Dimas Dwi Ariyani Indra Nurtjahjaningtyas Luthfi Amri Wicaksono Prautama Dewi, Atri Purnama Putra, Paksitya Putra Purnama, Paksitya Putri Kirani, Fachriza Riyasyul Huda, Ahmad Wulan Anggarita, Ovilia Yasmin Kanwar, Sonia Zuhdan, Muhammad Ghinva