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Analisa Konsentrasi Khlorofil-A Di Selat Madura Berbasis Nilai Algoritma Dari Reflektan Citra Satelit Suomi-VIIRs Hendrata Wibisana; Siti Zainab; Dian Purnama Solin
Jurnal Aplikasi Teknik Sipil Vol 16, No 2 (2018)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1195.18 KB) | DOI: 10.12962/j2579-891X.v16i2.3780

Abstract

Abstrak Pemetaan konsentrasi khlorofil-a sudah banyak dilakukan oleh para peneliti untuk memantau kondisi suatu perairan di laut lepas, hal ini dikarenakan klorofil-a merupakan salah satu parameter yang digunakan untuk mengukur kesehatan suatu perairan . Dengan mengetahui nilai konsentrasi klorofil-a suatu daerah maka dapat dilakukan suatu aksi terhadap proses management daerah perairan tersebut. Pada penelitian ini daerah pesisir pantai yang diambil adalah daerah selat Madura, dimana konsentrasi klorofil-a yang diukur berada di kabupaten Sampang dan kabupaten Pamekasan. Penelitian ini menggunakan teknik penginderaan jauh dengan memanfaatkan nilai reflektan permukaan dari citra satelit Suomi-VIIRS yang memiliki resolusi 750 meter. Nilai konsentrasi klorofil-a diperoleh dari ekstraksi citra satelit dengan program SeaDASS 7.2 dan dilakukan penyusunan algoritma dengan pemanfaatan kanal citra satelit pada panjang gelombang 410, 443, 551 dan 671 nanometer. Dari hasil perhitungan algoritma yang ada diperoleh bahwa kanal pada panjang gelombang 551 nm lebih cocok untuk menggambarkan konsentrasi klorofil-a dibandingkan dengan kanal lainnya, dan hasil olahan statistik memperlihatkan model yang paling cocok untuk itu adalah bentuk model linier dan pangkat pada kanal 551 nm , masing-masing dengan nilai R2 = 0,83 untuk model linier dan R2=0,85 untuk model pangkat.
Analisis Perbandingan Daya Dukung Tiang Pancang pada Tanah Berlempung Berdasarkan Data Penyelidikan Tanah Dian Purnamawati Solin
AGREGAT Vol 7, No 1 (2022)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v7i1.13319

Abstract

Perencanaan pondasi tiang memerlukan data penyeledikan tanah. Oleh karena itu, diperlukan data dan analisis dari penyelidikan tanah yang akurat guna menghindari terjadi kegagalan pada pondasi tiang. Penyelidikan tanah dengan pengujian Standard Pentetration Test (SPT) dan Cone Penetration Test (CPT) merupakan pengujian yang paling sering digunakan di beberapa proyek. Pada studi ini, dilakukan perhitungan daya dukung pondasi tiang berdasarkan data SPT dan CPT, tiga persamaan digunakan untuk menghitung daya dukung untuk setiap data pengujian. Dari hasil analisis didapatkan bahwa untuk perhitungan daya dukung berdasarkan data pengujian SPT, penggunaan persamaan Luciano Decourt lebih efektif dibandingkan dengan persamaan Nakazawa dan Reese & Wright. Hasil ini didapatkan dengan membandingkan nilai daya dukung dengan hasil pengujian Pile Driver Analyzer (PDA). Sementara itu, untuk daya dukung berdasarkan data CPT, penggunaan persamaan Meyerhof dan Price & Wardle memiliki tingkat kemiripan yang tinggi dengan BCR (Bearing Capacity Ratio) > 1.
Estimation of Bearing Capacity of Pile with Variation of Shape on Cohesive Soil Based on the Result of CPT Test (Study Case: Gunung Anyar District) Dian Purnamawati Solin; Fithri Estikhamah
Nusantara Science and Technology Proceedings International Seminar of Research Month 2021
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2458

Abstract

The bearing capacity of soil provides the most important output for soil investigation. Bearing capacity becomes a reference in designing the substructure of the structure. Therefore, it is necessary to have a capable bearing capacity analyzed by varying the shape of the foundation to provide a clear description of the highest bearing capacity of all the variations presented. In this study, a soil investigation was carried out by using the Cone Penetration Test from several distribution locations in Gunung Anyar District Area, where it is well known as cohesive soil which has a lower bearing capacity compared to non-cohesive soil. Based on this analysis, it shows that the pile foundation using a square cross-section will provide a greater value for the pile bearing capacity. Increasing the dimensions of the cross-sectional shape, it will provide a greater value for the carrying capacity of the pile as well. This is evidenced at a depth of 16.4 m, for a square cross-sectional dimension of 0.4 m it gives a value of 80.49 tons, while for a cross-sectional dimension of 0.6 m it gives a value of 164.736 tons.
Analisa Anjlokan Kereta Api Bima Rute Surabaya-Malang Pada KM 8+625 Petak Wonokromo-Waru Nugroho Utomo; Dian Purnamawati Solin
KERN Vol 5 No 2 (2019): Jurnal KERN : Oktober 2019
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.125 KB) | DOI: 10.33005/kern.v5i2.16

Abstract

Peristiwa anjloknya kereta api pada rel merupakan kondisi dimana kereta api tidak dapat menunjukkan performa perjalanannya dengan aman dan keluar dari jalurnya disebabkan karena gangguan mekanik pada rel seperti rel patah dan komponen pendukung struktur jalan kereta api seperti penambat rel dan bantalan rel yang tidak berfungsi dengan baik. Anjloknya kereta api merupakan hal yang perlu dipertimbangkan dalam keselamatan perjalanan kereta api terlebih lagi jika kereta api tersebut membawa muatan barang berbahaya. Penyebab dari rel patah dapat terjadi karena kelelahan material dari rel yang tidak terpantau ditambah dengan pembebanan berulang dari kereta api. Selain itu kejadian anjloknya kereta api pada rel juga dapat terjadi di area perlintasan sebidang antara jalan kereta api dan jalan raya dengan jarak pandang aman tersedia yang pendek. Dari beberapa peristiwa kereta api anjlok yang pernah terjadi di Indonesia umumnya disebabkan karena patah rel. Seperti peristiwa yang terjadi pada tanggal 26 Juli 2017 di KM 8+625 petak Wonokromo – Waru yakni anjloknya Kereta Api Bima (KA 43) rute Surabaya –Malang disebabkan oleh rel patah. Prosedur analisis anjloknya Kereta Api Bima ini dilakukan dengan perhitungan distribusi pembebanan pada stamformasi kereta api rencana, perhitungan nilai dumping factor (λ), perhitungan besar momen maksimum dan tegangan yang terjadi pada rel dan perhitungan besar momen dan tegangan yang terjadi pada bantalan rel. Dari hasil analisis diketahui bahwa penyebab anjloknya Kereta Api Bima adalah karena nilai tegangan hitung pada rel hampir mendekati nilai tegangan ijin rel (kritis), sehingga kondisi rel eksisting rawan terhadap kelelahan material (fatigue) lebih awal.
Analisis Hubungan Antara Porositas Dengan Penyerapan Air Dian Purnamawati Solin; Nugroho Utomo; Siti Zainab
KERN Vol 5 No 2 (2019): Jurnal KERN : Oktober 2019
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.192 KB) | DOI: 10.33005/kern.v5i2.17

Abstract

Soils is one of key of infrastructure and agriculture development. Therefore, it is necessary to identify the behavior of soil. In this paper, the relation between porosity and water absorption were identified by using laboratory test. Based on the results of laboratory testing, the porosity value of the soil in the coastal areas tends to be small, with the largest porosity value = 0.388. Meanwhile, for water absorption, the largest percentage of water that can be absorbed in the soil is 35,925. By using a linear mathematical model found a relationship between soil porosity with water absorption y = 204.91x-44.4 with a regression value R2 = 0.9954.
Evaluasi Karakteristik Kekuatan Tanah yang Distabilisasi dengan Fly Ash Himatul Farichah; Dio Alif Hutama; Dian Purnamawati Solin
Jurnal Pensil : Pendidikan Teknik Sipil Vol 12 No 3 (2023): Jurnal Pensil : Pendidikan Teknik Sipil
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/jpensil.v12i3.37489

Abstract

High domestic consumption of coal, especially in energy sector, has raised concerns on several environmental issues in Indonesia. Large amount of coal combustion product in the form of solid waste, such as fly ash resulting from coal power plant production causes problems in its disposal since its necessity of land occupancy. Over the last decade, many researchers have put effort to solve this disposal concerns by utilizing these materials for various purposes, such as construction materials as part of circular economy. This paper presents the utilization of fly ash for soil stabilization in Surabaya. Firstly, the index properties of soil samples were determined through a series of laboratory soil test including specific gravity, unit weight, moisture content, sieve analysis and Atterberg’s limit tests. Subsequently, standard proctor test was conducted to obtain the maximum dry density and optimum moisture content of the soil samples. Using those parameters, four types of soil stabilized with fly ash samples were prepared with fly ash content based on weight of soil as follows: 0%, 5%, 10%, and 15%. Finally, unconfined compression tests were performed with cylindrical soil samples to assess the unconfined compressive strength of those samples. The results indicate that soil with fly ash content of 10% showing the highest unconfined compressive strength compared to the other variations of 0.90 kg/cm2.
Numerical Analysis of Soft Soil Improvement using Pile at Airport Construction Project Himatul Farichah; Dio Alif Hutama; Dian Purnamawati Solin
JACEE (Journal of Advanced Civil and Environmental Engineering) Vol 6, No 2 (2023): October
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/jacee.6.2.107-117

Abstract

Construction on the soft ground poses an excellent challenge for geotechnical engineers. Several engineering problems such as bearing capacity failure and differential settlement could occur either during or after the construction phase due to high compressibility and low shear strength. Nowadays, a number of soil improvement techniques are available to solve such problems. However, each method has its advantages and disadvantages. In this study, soil improvement analysis using pile were performed with three variations depths so called 12 m, 18 m, and 24 m from the ground level. A finite element simulation has been performed using PLAXIS 2D. The pile has been modeled as plate and Mohr-Coulomb model was used for soil model. The results show that the deeper the pile, the settlement will be decreasing. Moreover, the axial force and bending moment of the pile obtained from the output of PLAXIS 2D were also presented to assess the performance of the soil improvement technique.
Analisis Perbandingan Variasi Dimensi Fondasi Tiang Pancang Pada Jembatan Sambirejo di Tol Solo-Kertosono Wulandari, Malinda; Solin, Dian Purnamawati; Farichah, Himatul
AGREGAT Vol 8 No 2 (2023)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v8i2.20201

Abstract

The foundation is one of the essential elements in a construction. Therefore, during the process of designing, meticulous design becomes important. This involves a careful consideration of soil investigation and upper structure data. Apart from these two aspects, the selection of the appropriate foundation type, dimensions, and depth are also crucial factors to consider during process of designing. Hence, in this research the analysis of the bearing capacity of pile foundations is conducted with variations in dimensions of 500, 600, and 800 to obtain effective and suitable dimensions for the case study area of the Solo-Kertosono toll road. Additionally, this study includes an analysis of the efficiency of pile by calculating the bearing capacity, settlement and the cost and time estimation plan. In summary, the result of this research indicate that the most effective and suitable dimension is a foundation with a diameter of 800 mm.
ANALISIS STABILITAS DAN ALTERNATIF PERKUATAN LERENG PROYEK REHABILITASI BENDUNGAN PACAL KABUPATEN BOJONEGORO Lutfiah, Ine; Solin, Dian Purnamawati; Farichah, Himatul
AGREGAT Vol 8 No 2 (2023)
Publisher : Universitas Muhammadiyah Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30651/ag.v8i2.20947

Abstract

Pacal Dam is infrastructure used for irrigation purposes for the Bojonegoro community. However, in 2014 there was heavy rain and it triggered a landslide on the right side of the support cliffspillway. Therefore, this research was carried out to determine the condition of the slopes of the Pacal Dam project in existing conditions and to find out safe alternatives for handling it as planned. With assistive programsPlaxis can find out the safety value of the slope in its existing condition and when handling is carried out. The safety value when existing conditions have a less safe value, namely 1.1061 or less than 1.50. Therefore, handling is carried out by adjusting the slope of the slope (cut and fill) and strengthening by usingSoil Nailing. Safety value when excavating and filling (cut and fill) of 2.1179 which means it is safe. And for security value with reinforcementSoil Nailing The security value is 2.9407, with long planningnail 10 meters, vertical horizontal distance 1 meter, and with a slope of 15. From the slope results, both treatments met the planned standard safety value of 1.5. Therefore, slope strengthening can be used as an alternative for handling slope stability.
Effects of Gravel Percentage to Compaction Density and Stability of Embankment Sukmawati, Eka; Solin, Dian Purnamawati; Farichah, Himatul
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 20 No. 1 (2024): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v20i1.65825

Abstract

Embankments are frequently used in the construction of road, railway, airport, dams and other types infrastructure. Soil compaction is a crucial part of the construction process of embankment. Thus, soil compaction needs to be conducted and investigated in such a way so embankment will not experience large settlement that could lead to collapse. Generally, soil compaction density testing is performed using the sand cone method according to ASTM D-1556. The material used in this test is not carefully considered, which may lead to inaccurate results. In this study, the sand cone correction test according to ASTM D-4718 which consider the percentage of gravel is established to identify the compaction density of embankment and the effect to its stability. 16 secondary data of compaction density have been collected from the construction of embankment. According to the data, the compaction density of the embankment has met the specifications. The relationship between the gravel percentage and the compaction density is obtained. With a determination coefficient (R2) value of 0.805, it can be understood that these two variables have a highly significant correlation. Furthermore, to understand the relationship between the compaction density and the stability of the embankment, a slope stability analysis was conducted on the embankment using the Fellenius method. The result shows that when the compaction density of the embankment meet the specifications, embankment is stable with the safety factor (SF) of 1.511. Furthermore, both variables have a very strong relationship. The safety factor of the embankment is increased as the compaction density increases.