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All Journal Jurnal Teknik Sipil Jurnal Penelitian Pendidikan IPA (JPPIPA) BENTANG : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Jurnal Rekayasa Sipil Jurnal Ilmiah Rekayasa Sipil 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
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Pengaruh Perubahan Kadar Air Tanah Terhadap Stabilitas Dinding Penahan Tanah Jenis Bronjong Andriani Andriani; Hanafi Hanafi; Abdul Hakam
Jurnal Rekayasa Sipil (JRS-Unand) Vol 17, No 1 (2021)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrs.17.1.85-96.2021

Abstract

Bronjong merupakan salah satu jenis dinding penahan tanah tipe gravity, dimana tingkat stabilitasnya tergantung dari berat konstruksi dan jenis timbunan yang digunakan.  Dinding penahan tanah merupakan suatu konstruksi yang digunakan untuk menahan tekanan lateral dari masa tanah dengan  ketinggian tertentu, untuk itu stabilitas dinding penahan tanah harus memenuhi syarat agar aman terhadap beban yang bekerja. Salah satu faktor yang mempengaruhi stabilitas dinding penahan tanah adalah kuat geser tanah timbunan dibelakang dinding. Pada lokasi tertentu terkadang sulit untuk menemukan jenis tanah berbutir kasar, sehingga digunakan jenis tanah berbutir halus. Penggunaan tanah berbutir halus sebagai bahan timbunan  dipengaruhi oleh kadar air, sehingga kuat geser tanah akan berubah. Penelitian ini bertujuan untuk mempelajari tingkat  stabilitas  jangka pendek dan jangka panjang dinding penahan tanah tipe bronjong di km 31+800 ruas jalan nasional Lubuk Selasih – Batas kota Padang dan menganalisis pengaruh berbagai variasi kadar air terhadap kuat geser tanah timbunan. Parameter kuat geser yang ditinjau berupa kuat geser total dan kuat geser efektif. Parameter kuat geser didapatkan dari pengujian di laboratorium  menggunakan uji triaksial Unconsolidated Undrained (UU) dan uji triaksial Consolidated Undrained (CU). Sampel yang digunakan dalam pengujian  dipadatkan pada tiga variasi kadar air, yaitu pada kadar air dibawah optimum, pada kadar air optimum dan pada kadar air diatas optimum. Hasil penelitian menunjukkan bahwa kuat geser total dan kuat geser efektif tertinggi diperoleh pada kondisi variasi kadar air terkecil (30 %). Dari perhitungan nilai stabilitas bronjong diperoleh bahwa pada variasi kadar air 30 % dan 40 % tingkat stabilitas bronjong aman terhadap guling, geser dan daya dukung sedangkan pada variasi  kadar air  50 %, dinding bronjong aman terhadap daya dukung tetapi tidak aman terhadap guling dan geser.
PENGARUH PENGGUNAAN SEMEN SEBAGAI BAHAN STABILISASI PADA TANAH LEMPUNG DAERAH LAMBUNG BUKIT TERHADAP NILAI CBR TANAH Andriani Andriani; Rina Yuliet; Franky Leo Fernandez
Jurnal Rekayasa Sipil (JRS-Unand) Vol 8, No 1 (2012)
Publisher : Civil Engineering Departement, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (755.851 KB) | DOI: 10.25077/jrs.8.1.29-44.2012

Abstract

Tanah merupakan material yang sangat berpengaruh dalam suatu pekerjaan konstruksi, karena suatu daerah tidak akan memiliki sifat tanah yang sama dengan daerah lainnya. Sebagian besar wilayah di Indonesia khususnya Kota Padang berada pada tanah lunak. Dua pokok masalah pada tanah lunak adalah penurunan yang besar dan daya dukung tanah yang kecil. Salah satu usaha perbaikan tanah yang akan diteliti adalah stabilisasi tanah dengan menggunakan bahan aditif yaitu Portland Cement Type I. Stabilisasi adalah memperbaiki sifat fisik dan mekanik tanah sehingga memenuhi persyaratan teknis tertentu. Tujuan penelitian ini untuk membandingkan nilai CBR tanah lempung sebelum dan setelah distabilisasi dengan penambahan Portland Cement Type I. Tanah yang akan distabilisasi adalah tanah lempung yang berasal dari daerah Lambung Bukik, Padang, dengan nilai CBR < 10%. Penelitian meliputi sifat fisik dan mekanik tanah yaitu parameter pemadatan dan uji CBR. Pengujian ini berpedoman pada ASTM untuk setiap pengujian. Variasi penambahan semen adalah 5%, 10%, 15%, dan 20% dari berat tanah kering. Pemeraman dilakukan sebelum dilakukan uji CBR, dengan waktu pemeraman selama 3 hari pada kondisi kadar air optimum. Hasil dari penelitian ini menunjukkan bahwa nilai maksimum CBR tanah lempung terdapat pada kadar penambahan semen sebanyak 20% dengan γdry maksimum 1.351 gr/cm3, kadar air optimum 32.9%, dan nilai CBR 64.138 % dengan waktu pemeraman 3 hari. Keywords : tanah lempung, stabilisasi tanah, portland cement type I, CBR
Analisis Tingkat dan Sebaran Bencana Tanah Longsor di Kabupaten Bengkulu Tengah Muhammad Latif; Andriani Andriani; Abdul Hakam
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 11 No 2 (2023): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (Juli 2023)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v11i2.6956

Abstract

The confluence of the three largest plates in the world between the Indo-Australian, Eurasian, and Pacific plates makes Indonesia a potential area for landslides. A landslide is the movement of a mass of soil or geology through a sliding plane down a slope. Bengkulu Tengah Regency, which is in Bengkulu Province, is an area prone to landslides, this can be seen based on previous events, which have caused people to experience loss of property and loss of life. Distribution Analysis of landslides is a method used to identify areas with potential levels of landslides starting from low to very high, which allows people to be more vigilant. The purpose of this study is to determine the distribution of landslide susceptibility and dominant factors that influence the level of landslide potential. The research method was carried out by giving weights and scoring with reference to Puslittanak. The making of landslide map was obtained from the results of overlaying secondary data such as DEM, distribution of land cover, distribution of rainfall, geological distribution, and distribution of soil types using the ArcGIS 10.7 application. The results showed that the level of landslides distribution in Bengkulu Tengah Regency was dominated by the distribution level of moderate landslides covering an area of ​​73455 Ha with a percentage of 60%. Areas that have a very high distribution of landslides are in four sub-districts consisting of Taba Penanjung, Meringgi Kelindang, Meringgi Sakti, and Pematang Tiga sub-districts with an area of ​​8948 Ha with a percentage of 7%. The rainfall map distribution had the highest value, which the most dominant factor in the process of landslide occurrence.
Geotechnical Investigation to Predicte of Liquefaction Potential in Gunung Pangilun Area, Padang City Fachriansyah, Ikrar; Raihan, Shufrael; Putra, Hendri Gusti; Andriani
Bentang : Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil Vol 13 No 1 (2025): BENTANG Jurnal Teoritis dan Terapan Bidang Rekayasa Sipil (January 2025)
Publisher : Universitas Islam 45

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/bentang.v13i1.10153

Abstract

Gunung Pangilun is an area in Padang that continues to experience urban and infrastructure development. Padang City is located in an earthquake-prone area in Indonesia, so it has a high risk of liquefaction. Geotechnical investigation is a crucial step in assessing liquefaction potential. This study aims to predict the liquefaction potential in Padang City, especially in the Gunung Pangilun area. The research methodology includes collecting geotechnical data through soil testing in the field, namely CPT and laboratory testing in the form of soil physical property tests. Liquefaction potential analysis was carried out using empirical methods such as the Seed & Idriss and Tsuchida methods. The analysis showed that at CPT points 1, point 2, point 3, and point 4, there was potential for liquefaction at depths below 1.0 m and 2.0 m. Meanwhile, based on the Tsuchida Curve, it shows that the surface of the soil (depth of 0.00 m - 1.00 m) does not have the potential for liquefaction because it is outside the liquefaction zone and the sand has a non-uniform gradation. Analysis of grain gradation on the ground surface (depth 0.00 m - 1.00 m) has a D50 value of 1.62 mm and at a depth of 1.00 m has a D50 value of 1.39 mm so that at that point, it shows that the ground surface has no potential for liquefaction. The conclusion of this study shows that the potential for liquefaction on Gunung Pangilun is at a depth of more than 1 m.
Improvement of California Bearing Ratio (CBR) Value of Clay Soil in Limau Manis Area, Padang by Using Lime and Rice Husk Ash Candra, Prasetia Dego; Andriani, Andriani; Hakam, Abdul; Apdeni, Risma
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 6 No 3 (2024): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46574/motivection.v6i3.390

Abstract

Clay soil is known for its low bearing capacity, causing cracking or even collapse in construction. Soil improvement is needed before embanking into building on this type of soil. Methods to increase the bearing capacity of clay soil include compacting the soil or mixing it with additive materials that can improve soil properties. This study aimed to analyze the CBR value of clay soil in the Limau Manis hilly area, Padang City, with the addition of 5% lime and 2%, 4%, 6%, and 8% rice husk ash (RHA). The type of the soil is Organic Silt and Silty Clay (OL). This study conducted physical and mechanical properties of soil testing, i.e. sieve analysis, specific gravity, plastic limit, liquid limit, and CBR value. The results showed that adding 5% lime increased the CBR values of 0-day and 7-day cured soil, both in soaked and unsoaked conditions. The CBR value of the soaked and unsoaked 0-day cured soil sample increased by 189% and 168% respectively, while the CBR value of the soaked and unsoaked 7-day cured soil sample increased by 259% and 215% respectively. However, the addition of rice husk ash decreased the CBR value.
Identifikasi dan Pemetaan Masalah di Nagari Pasca Bencana Erupsi Gunung Marapi di Sumatera Barat Mahdi, Mahdi; Istijono, Bambang; Yossafra, Yossafra; Ismail, Febrin Anas; Hakam, Abdul; Adji, Bayu Martanto; Saputra, Dendi; Andriani, Andriani; Narny, Yenny; Giffari, Muhammad Al; Zis, Sirajul Fuad; Yuliet, Rina
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.705

Abstract

Mount Marapi is an active volcano located in West Sumatra. The eruptions of Mount Merapi have a significant impact on the social and economic conditions of the surrounding communities. This study aims to identify and map the post-disaster issues in the nagari affected by the eruption of Mount Marapi in West Sumatra Province to formulate appropriate mitigation measures. Using a descriptive qualitative approach with a case study method, data were collected through direct observation, in-depth interviews, and photographic documentation. The results of the study show that infrastructure damage, including roads and bridges, hinders mobility and aid distribution, while the agricultural and livestock sectors suffer substantial losses. The social impacts include loss of housing and psychological trauma, while the economic impacts are evident in the significant losses faced by small and medium enterprises (SMEs). Health concerns, such as increased respiratory and skin diseases, as well as sanitation issues, are also major concerns. Mitigation efforts undertaken include infrastructure repairs, construction of embankments, public education on disaster preparedness, and psychological support for disaster victims. This study highlights the importance of comprehensive and sustainable mitigation strategies to reduce the impact of disasters and ensure the well-being of communities in disaster-prone areas.
Pemodelan Luas Genangan Banjir Batang Lunto di Wilayah Kota Sawahlunto Indra, Bambang Adi; Daud, Darwizal; Andriani, Andriani; Azra, Dio Syahlung
Jurnal Talenta Sipil Vol 8, No 1 (2025): Februari
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/talentasipil.v8i1.848

Abstract

Batang Lunto originates in Barangin District, Sawahlunto City, West Sumatra Province and flows eastwards, dividing Sawahlunto City in Lembah Segar District and empties into Batang Ombilin. The Batang Lunto River is included in the Ombilin Coal Mining Heritage Area of Sawahlunto and has been designated as a world cultural heritage by the United Nations Educational, Scientific and Cultural Organization (UNESCO). During the rainy season along the Batang Lunto river, flooding often occurs, while along the Batang Lunto river there are heritage and geopark assets which are tourism destinations in Sawahlunto City. This research aims to model the area of the Batang Lunto flood inundation in the Sawahlunto City area as a first step in mitigating the risk of flood disasters with an area under review of 125.70 Ha. Modeling was carried out using a hydrological and hydrodynamic approach using rainfall data, topography and river flow characteristics. This research utilizes simulation software to map flood-affected areas with various flow discharge scenarios. Flood inundation simulations were carried out using ArcGIS 10.3, HEC-Ras 6.3.1 software at return periods of 2, 5, 10, 25, 50, 100 years. The results of this research show that the flood inundation area resulting from the HEC RAS simulation at the 2-year return period with a discharge of 102.61 m3/s is 18.12 Ha or around 14.42% of the total area of the survey area in this study and respectively for return periods 5, 10, 25, 50, 100 annual is 20.43 Ha (16.25%), 38.38 Ha (30.53%), 45.84 Ha (36.48%), 55.56 Ha (44.20%), 63.70 Ha (50.68%).
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.
Co-Authors AA Sudharmawan, AA Abdul Hakam Abdul Hakim Aprisal Azra, Dio Syahlung Bambang Istijono, Bambang Candra, Prasetia Dego Daud, Darwizal Defitri, Hilga Fachriansyah, Ikrar Fauzan Febrin Anas Ismail Franky Leo Fernandez Giffari, Muhammad Al Hape, Shafira Rahmadilla Indra, Bambang Adi Jamhari Jamhari Laurency, Sonya Ostha Mahdi Mahdi, Mahdi Mahmudi, Fuad Muhammad Latif Narny, Yenny Nofrizal Nofrizal Putra, Hendri Gusti Raihan, Shufrael Riadi, Irvan Rina Yuliet, Rina Risma Apdeni Saputra, Dendi Taufik, Arrahmat Yossafra, Yossafra Yuliet, Rina Zelby, Rahayu Zis, Sirajul Fuad