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All Journal CIVED (Journal of Civil Engineering and Vocational Education) Jurnal Teknik Sipil BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Rekayasa Sipil Jurnal Ilmiah Rekayasa Sipil Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Talenta Sipil SAINSTEK
Andriani Andriani
Jurusan Teknik Sipil, Fakultas Teknik, Universitas Andalas. Padang, Sumatera Barat, Indonesia
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Liquefaction Potential Analysis Using Various Methods (Case Study of Railway Bridge in Sintuk Toboh Gadang District, Padang Pariaman Regency, West Sumatera) Didi Yoriadi; Andriani Andriani; Abdul Hakam
Journal of Applied Engineering and Technological Science (JAETS) Vol. 6 No. 2 (2025): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v6i2.6115

Abstract

The earthquake that rocked West Sumatra with a magnitude of 7.9 SR, a depth of 71 km, and an epicenter of 0.84 LS - 99.65 BT around 57 km Southwest of Pariaman on 30 September 2009 has caused damage to infrastructure and buildings and caused 383 fatalities. One of the problems caused by the earthquake is the liquefaction phenomenon. Liquefaction was reported to have occurred in Padang in the form of sand ejection coming out of cracks in the ground after the 7.9 SR earthquake in 2009. This study aims to determine the liquefaction potential of the Sintuk Toboh Gadang railway, Pariaman, using various liquefaction potential analysis methods so that the most practical and convincing method is obtained among these methods. In this study, the methods used to predict liquefaction are the Tsuchida (1970), Seed & Idriss (1971), Shibata & Teparaksa (1988), and Hakam (2020) methods. Field testing was conducted at four CPT test points, four NSPT test points, and machine drilling tests. The results showed that using the Tsuchida (1970) method, soil deposits at the four points tended to have liquefaction potential. The Seed & Idriss (1971) method showed that points 3, with depths of 8m and 14m, and point 4, with a depth of 8m, had liquefaction potential, while the Shibata & Teparaksa (1988) method using CPT data showed that at depths <10 meters there was a tendency for liquefaction to occur at the four points reviewed. The study's results using the Hakam (2020) method resemble the method proposed by Seed & Idriss (1971). It can be concluded that among the four methods, the most practical and convincing method is the Hakam (2020) method.
Analisis Stabilitas dan Perbandingan Metode Perbaikan Longsor Ruas Jalan Barung-Barung Belantai KM. 45+400, Pesisir Selatan Zelby, Rahayu; Hakam, Abdul; Andriani, Andriani
Jurnal Ilmiah Rekayasa Sipil Vol 22 No 1 (2025): April 2025
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v22i1.1761

Abstract

The Barung-Barung Belantai road section is located in Pesisir Selatan Regency, West Sumatra. The area is dominated by steep hillsides that are prone to landslides. The types of slope reinforcement used are Gabion, Cantilever Retaining Walls and Sheet Piles. This study aims to calculate the slope safety factor value using the slice method, analyze slope reinforcement against the safety factors of overturning, sliding, soil bearing capacity and calculate the cost and time of the work. Based on the calculation of slope stability, the slope safety factor (Fs) value is 0.8569, overturning is 0.971, and the soil bearing capacity value is 0.996. These values ​​indicate that the slope condition is classified as unstable because all safety factor values ​​(Fs) are below 1.25, which is the safe limit. Based on this analysis, this study recommends the use of a 4-meter high cantilever retaining wall as a repair solution. The calculation results show that this wall has a safety factor (Fs) against shear of 4.920, overturning of 2.003, and soil bearing capacity of 4.730, including the safe category and meeting technical criteria. It is concluded that the cantilever wall is more efficient than the gabion and sheet pile methods. The construction of the cantilever wall requires a budget of Rp. 522,259,000 with a working time of 14 weeks. As a comparison, the construction of the gabion structure costs Rp. 560,974,000 with a work duration of 11 weeks, while the sheet pile costs Rp. 629,578,000.- with a work time of 10 weeks.
Penanganan Longsor Pada Ruas Jalan Padang – Painan (Sta. 50+950 - 51+035) di Kabupaten Pesisir Selatan dengan Dinding Penahan Tanah dan Fondasi Tiang Bor Laurency, Sonya Ostha; Andriani, Andriani; Hakam, Abdul; Istijono, Bambang
Jurnal Ilmiah Rekayasa Sipil Vol 22 No 1 (2025): April 2025
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v22i1.1765

Abstract

High rainfall on steep slopes along the Padang – Painan city boundary road (Sta 50+950 – Sta 51+035) Pesisir Selatan Regency resulted in landslides and damage to retaining walls. This study aims to analyze slope stability, and retaining wall stability without and using bored pile foundations. The retaining wall used in this study is the Cantilever type. Slope stability analysis using the slices method was carried out by trial and error three times, the results showed a safety factor value (FS <1.25) which means the slope is unstable. The results of the slope improvement analysis using cantilever retaining wall without bored pile foundations showed that the structure was safe against overturning (FS = 3.9) and shear safety (FS = 2.3), but not safe against soil bearing capacity (FS = 1.5 <3). The addition of a single bored pile foundation to the retaining wall increased the bearing capacity to 3,443.43 kN but was unable to withstand the design load of 41,766.45 kN. Therefore, a pile group foundation with a maximum load capacity of 482,080.27 kN, and a permissible bearing capacity of 192,832 kN is used so that it can withstand the structural load. The estimated cost of geotechnical and structural work is Rp10,361,534,397.05 with an implementation time of 10 weeks. The results of this study provide technical recommendations for comprehensive slope and DPT repairs for similar conditions in the future.
Studi Perilaku Subgrade Terhadap Tanah Bahan Baku Bata di Mentawai Mahmudi, Fuad; Hakam, Abdul; Andriani
SAINSTEK Vol. 13 No. 1 (2025)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v13i1.303

Abstract

Kepulauan Mentawai mempunyai cukup banyak kandungan Lanau dan Lempung untuk Pembuatan Batu Bata. Ada beberapa Pabrik Batu Batu Merah yang sudah berdiri di Kepulauan Mentawai tersebut. Penelitian ini bertujuan menganalisa perilaku Subgrade terhadap Sifat-Sifat Fisik dan Mekanik Tanah Bahan Baku Batu Bata sebagai alternatif perbaikan lapis pondasi jalan. Metodologi yang digunakan dalam penelitian ini termasuk penelitian eksperimental di Laboratorium. Keabsahan hasil dilakukan dengan beberapa sampel percobaan yang memadai untuk keterwakilannya. Hasil penelitian ini menyatakan bahwa Klasifikasi Tanah sangat menentukan terhadap hasil pengujian, Tanah Bahan Baku Pabrik Rahman dan Pabrik Misna termasuk Lanauan Elastis (MH) dan Pabrik Samirin termasuk Lempung Plastisitas Rendah (CL). Tanah Bahan Baku di Kepulauan Mentawai mempunyai Berat Jenis yang cukup berat yaitu 2,70 - 2,72 karena mempunyai kandungan Besi Oksida (Fe2O3) sekitar 20% - 30% dari komposisi kimianya. Peningkatan yang cukup signifikan pada percobaan pemadatan Tanah Bahan Baku pada pengujian CBR Rendaman 4 hari yang sebelumnya bernilai 4,90% menjadi 10,92% naik sekitar 200%. Perbaikan Tanah untuk yang bernilai CBR < 6% dengan Metode Pembakaran (Burning Method) sampai tanah berwarna kemerahan terbukti dapat meningkatkan nilai CBR 2 kali lipat karena adanya unsur kimia berupa Pozzolanic yaitu Silika (SiO2), Alumina (Al2O3), dan Besi Oksida (Fe2O3) lebih dari 70%, dan dengan pembakaran akan mengurangi komposisi mineral Montmorillonite dan Illite dan beralih ke komposisi dominan Quartz dan Graphite.
Optimization of Bored Pile Foundation Usage in Apartment Development Projects in Batam Defitri, Hilga; Andriani, Andriani; Hakim, Abdul; Hape, Shafira Rahmadilla
Jurnal Teknik Sipil Vol 25, No 2 (2025): Vol 25, No 2 (2025): JURNAL TEKNIK SIPIL EDISI MEI 2025
Publisher : Fakultas Teknik Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/jts.v25i2.91760

Abstract

Batam is actively developing apartments and hotels to support the growing tourism sector. Proper planning of structures and foundations is essential in the construction process to ensure the building's strength. Several factors must be considered when designing bored pile foundations, such as depth, diameter, and pile cap dimensions. Costs increase as the piles' diameter and the pile cap's dimensions expand. Therefore, optimizing the foundation design to achieve the optimal pile diameter, number of piles, and bearing capacity is important while maintaining cost efficiency without compromising foundation safety standards. This study aims to optimize the allowable bearing capacity of the actual bored pile foundation using the N-SPT value approach and compare the costs of executing the actual bored pile foundation with the optimized bored pile foundation. The analysis results show that the actual foundation bearing capacity in the field is 21.038,448 kN, while the optimized foundation has a bearing capacity of 10.812 kN. The cost for the actual bored pile foundation in the field is IDR 604.862.538, while the cost for the optimized pile foundation is IDR 416.517.335. The difference in cost between the two is IDR 188.345.203, indicating a cost saving of 68,86% with the optimized foundation.
Karakteristik Material Tanah Galodo Gunung Marapi terhadap Potensi Bencana Riadi, Irvan; Hakam, Abdul; Andriani, Andriani
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.903

Abstract

Mount Marapi in West Sumatra is an active mountain with a history of disasters, including galodo or flash floods due to eruptions and high rainfall. The soil material carried by the galodo greatly influences the potential for disaster. This research analyzes the classification and characteristics of galodo soil material and its relationship with disaster potential, as well as determining mitigation efforts that can be carried out. This research method uses laboratory experiments. Soil samples were taken from 16 points at seven river locations, namely Batang Jambu, Batang Malanang, Batang Bangkahan, Batang Arau, Sungai Talang, and Batang Anai, with a distance of 50 meters between points. Samples were collected in the form of disturbed soil, which was then analyzed to determine its physical and mechanical properties. The results showed that the galodo soil material was classified as sand (SW), silty sand (SM), and clayey sand (SC). Its physical properties include a specific gravity of 2.65-2.67, a bulk density of 1.61-1.96 gr/cm3, and a plasticity index of 8.25-9.17%. Mechanically, the soil has a cohesion of 0.029–0.071 kg/cm2 and a deep shear angle of 26.57–37.77°. These characteristics indicate non-cohesive properties, so when saturated due to high rainfall, the pore water pressure increases and causes high-speed debris flow. The kinetic energy of these flows can damage riverbanks, settlements, and infrastructure. Mitigation measures include structural measures such as the construction of check dams, groundsills, and sabo dams, as well as non-structural measures such as early warning, disaster education, and limiting settlements on riverbanks.
Simulasi Luas Genangan Banjir Batang Sinamar Nagari Taram Kab. Lima Puluh Kota Taufik, Arrahmat; Daud, Darwizal; Andriani, Andriani
Jurnal Talenta Sipil Vol 8, No 2 (2025): Agustus
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i2.953

Abstract

Batang Sinamar is located in Lima Puluh Kota Regency, West Sumatra Province, and flows through Riau Province before emptying into the Strait of Malacca. Flooding can cause loss of life and property. In the Nagari Taram area, floods occur almost every year with an average inundation depth of 1–2 meters. However, no research has been conducted on flood control and early warning systems. Meanwhile, the economic losses experienced by the community are significant. Therefore, it is necessary to conduct simulations of flood inundation depth and flood-prone areas as an initial study for flood control planning. The simulation uses HEC-RAS 6.4.1 software, QGIS, and the DEMNAS base map from BIG. Hydrological analysis is performed using the Nakayasu and Snyder Synthetic Unit Hydrographs with flood return periods of 2, 5, 10, and 25 years. The simulation results show that the flood inundation area increases with higher return periods. For the flood event in 2019, the discharge was equivalent to a 5-year return period flood, which was 982.18 m³/s, with an inundation area of 293.51 hectares. Hazard zones (marked in red) are predominantly found along the riverbanks, with an average distance of around 100 meters from the river's edge. The study concludes that the areas along the riverbanks are unsuitable for residential settlements, schools, and agricultural activities due to inundation depths of ≥3.0 meters.
Co-Authors AA Sudharmawan, AA Abdul Hakam Abdul Hakim Alfito Alfito Arian Dodi Azra, Dio Syahlung Bambang Istijono, Bambang Bayu Martanto Adji, Bayu Martanto Candra, Prasetia Dego Daud, Darwizal Defitri, Hilga Didi Yoriadi Fachriansyah, Ikrar Farid Akmal Febrin Anas Ismail Franky Leo Fernandez Giffari, Muhammad Al Hape, Shafira Rahmadilla Herol, Herol Indra, Bambang Adi Jamhari Jamhari Mahdi Mahdi Mahdi Mahdi, Mahdi Mahmudi, Fuad Muhammad Al Giffari Muhammad Latif Narny, Yenny Nurhamidah, Nurhamidah Putra, Hendri Gusti Rahmad Yuhendra Raihan, Shufrael Riadi, Irvan Rina Yuliet, Rina Risma Apdeni Saputra, Dendi Sonya Ostha Laurency Taufik, Arrahmat Yossafra, Yossafra Yuliet, Rina Zelby, Rahayu Zis, Sirajul Fuad