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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Teknik Rekayasa Sipil Teknisia Teras Jurnal Jurnal Pendidikan Fisika dan Teknologi Inersia : Jurnal Teknik Sipil Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Journal of the Civil Engineering Forum Jurnal Teknik Sipil Jurnal Geosaintek

Supriani, Fepy

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Author-ID : 1208942

Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Physics Transportation

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Unveiling Differences in Seismic Response: Comparative Study of Equivalent Linear and Nonlinear Analyses in the Central Coastal Region of Bengkulu, Indonesia Anggraini, Giovanny Dhebby; Mase, Lindung Zalbuin; Supriani, Fepy; Misliniyati, Rena; Amri, Khairul; Chaiyaput, Salisa
Journal of the Civil Engineering Forum Vol. 11 No. 1 (January 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.13849

Seismic response analysis is a key aspect in earthquake geotechnical engineering, as it provides important insights into the behavior of soils when exposedtoseismic forces. This research compares equivalent linear and non-linear models in the central coastal region of Bengkulu, which is known for its complex geology and high seismicity. By evaluating the accuracy and reliability of each model in predicting ground motion amplification, this research aims to provide useful recommendations for seismic design. The research method uses one-dimensional equivalent linear and nonlinear propagation modeling, namely Pressure Dependent Hyperbolic (PDH). The analysis resulted in the parameters of Peak Ground Acceleration (PGA), time history acceleration, spectral response acceleration, and amplification factor. The equivalent linear method consistently produced higher values for peak ground acceleration (PGA), spectral response acceleration, time history acceleration, and amplification factor compared to the nonlinear method. The analysis results show that the equivalent linear PGA values are in the range of 0.32g to 0.63g, while the nonlinear values range from 0.20g to 0.52g. The resulting spectral responses are averaged over the design spectrum within 0.2 s to 0.9 s, which can affect low- to high-ceilinged buildings. The equivalent linear amplification factor has a range of 1.59 to 1.91, while the nonlinear has a range of 0.80 to 1.59. Both methods have their advantages, with the nonlinear approach offering greater accuracy for large seismic events, while the equivalent linear model remains useful for preliminary analysis. Hopefully, these findings will improve the understanding of ground response in coastal areas and provide valuable data for improving infrastructure resilience in earthquake-prone areas around the world.

Spatial Distribution Analysis of Geotechnical Properties (Elastic Modulus, Cohesion, and Internal Friction Angle) in Soil Layers of Bengkulu City Hanipa, Rerisa Al; Kamal, Thomas Mustafa; Fikri, Muhammad Haikal; Mase, Lindung Zalbuin; Misliniyati, Rena; Supriani, Fepy; Refrizon, Refrizon
INERSIA lnformasi dan Ekspose Hasil Riset Teknik Sipil dan Arsitektur Vol. 21 No. 1 (2025): May
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/inersia.v21i1.78611

This study investigates the spatial distribution of key geotechnical parameters—namely modulus of elasticity, cohesion, and internal friction angle—in the dominant soil types of Bengkulu City, Indonesia. Given the region’s complex geological structure and vulnerability to seismic activity, accurate assessment of soil characteristics is essential to support infrastructure development and mitigate geotechnical risks. Bengkulu lies between two active tectonic faults, making soil behavior analysis a crucial component of earthquake-resistant design. A total of 215 geotechnical data points were compiled from previous field investigations, covering a wide range of lithologies, including sandy soils, clay deposits, and various rock layers. The geotechnical parameters were spatially interpolated using the Inverse Distance Weighting (IDW) method to generate distribution maps that visualize the variation across different soil layers. This method was selected for its simplicity, effectiveness, and ability to provide weighted estimates based on spatial proximity. The analysis reveals that soils in the southern coastal region generally exhibit lower values of modulus of elasticity and cohesion, indicating a higher potential for deformation and shear failure. In contrast, central and northern areas tend to show higher geotechnical strength parameters, suggesting relatively stable ground conditions. The internal friction angle also increases with depth and material density, with hard rock zones showing the highest values. These findings contribute to the understanding of soil behavior in Bengkulu City and offer valuable insights for geotechnical engineers, urban planners, and disaster mitigation authorities. The spatial analysis of soil strength parameters provides a foundation for more resilient infrastructure planning and can be used as a reference for similar studies in other high-risk seismic regions.

Karakteristik Tanah pada Kawasan Sawah Lebar Baru Kota Bengkulu dan Aplikasinya dalam Perancangan Geoteknik Rifqi, Fianco Fakhri; Mase, Lindung Zalbuin; Supriani, Fepy; Misliniyati , Rena; Hardiansyah
Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Vol. 14 No. 1 (2025): Cantilever
Publisher : Department of Civil Engineering and Planning, Faculty of Engineering, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35139/cantilever.v14i1.416

Soil is an essential and indispensable material in civil engineering and building design, affecting various construction works. The primary function of soil is to support the construction load built on it, so the soil must be able to carry the load. Each type of soil has different characteristics, so it requires special handling, both physically and mechanically. This research aims to determine the soil's physical and mechanical properties and its application using the finite element method in the Sawah Lebar Baru area, Bengkulu City. The Sawah Lebar Baru area is currently developing a new residential area. Based on the tests conducted, the soil in the area is classified as silt with high plasticity (MH). The tests include physical tests such as moisture content, volume weight, specific gravity, grain size analysis, and Atterberg limits, as well as mechanical tests such as free compressive strength test, consolidation test, and direct shear test. The results of this study provide information on the type, characteristics, physical and mechanical properties of soil, as well as its application in geotechnical design. The foundation design test results showed that the maximum vertical load was 32,900 kN/m², and the safety factor value was 3.047 for the 0.5 m depth variation. The maximum vertical load value in the foundation with a depth variation of 0.75 m is 67,500 kN/m², and the most significant safety factor value is 5.909. For the depth variation of 1 m, the maximum vertical load value is 118,050 kN/m², and the safe factor value is 9.864.

Characteristics of Cohesive Soil Tanjung Jaya area of Bengkulu City and Its Implementation in Geotechnical Design Junasiq, M. Afra; Misliniyati, Rena; Mase, Lindung Zalbuin; Hardiansyah, Hardiansyah; Supriani, Fepy
Teras Jurnal : Jurnal Teknik Sipil Vol. 15 No. 1 (2025): Volume 15 Nomor 1, Maret 2025
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v15i1.1214

Abstrak Pembangunan konstruksi di Indonesia terus meningkat seiring dengan meningkatnya kebutuhan infrastruktur. Kota Bengkulu, ibukota Provinsi Bengkulu, juga mengalami pembangunan infrastruktur yang signifikan dalam beberapa tahun terakhir. Penelitian ini bertujuan untuk mengidentifikasi karakteristik tanah kohesif di kawasan Tanjung Jaya, Kota Bengkulu, dan penerapannya dalam mendesain fondasi dangkal. Tahap awal penelitian ini meliputi pengambilan sampel, kemudian dilanjutkan dengan pengujian sifat-sifat fisis tanah, seperti kadar air, berat volume, berat jenis, analisa ukuran butiran, dan Atterberg Limits. Dari hasil pengujian tersebut, tanah di lokasi tersebut diklasifikasikan sebagai lanau elastis (MH). Pengujian sifat mekanis dilakukan melalui uji kuat tekan bebas dan konsolidasi. Pemodelan fondasi berdasarkan sifat fisis dan mekanis tanah, dilakukan dengan menggunakan aplikasi berbasis metode elemen hingga pada satu titik sampel, dengan menggunakan nilai terendah dari kuat tekan bebas (qu) dan kuat geser (Su) dari dua titik uji pada kedalaman 0,75 m dan 1 m, serta variasi lebar fondasi untuk pendekatan yang lebih konservatif. Faktor keamanan terkecil yang diperoleh adalah 1,440, dan terbesar adalah 4,654, dengan beban vertikal maksimum mencapai 109,30 kN/m² pada kedalaman 1 m dan lebar fondasi 2 m.Kata kunci: Tanah kohesif, sifat fisis, sifat mekanis, metode elemen hingga, fondasi dangkal Abstract Construction development in Indonesia continues to increase in line with the growing demand for infrastructure. The City of Bengkulu, the capital of Bengkulu Province, has also seen significant infrastructure development in recent years. This study aims to identify the characteristics of cohesive soil in the Tanjung Jaya area, Bengkulu City, and its application in designing shallow footing. The initial phase of the study includes sample collection, followed by tests of the soil's physical properties, such as moisture content, volume weight, specific gravity, grain size analysis, and Atterberg Limits. The results classify the soil in this location as elastic silt (MH). Mechanical properties testing was assessed through unconfined compressive strength and consolidation tests. Foundation modeling, based on the soil's physical and mechanical properties, was conducted using a finite element method-based application at one sample point, utilizing the lowest values of unconfined compressive strength (qu) and shear strength (Su) from the two test points at depths of 0.75 m and 1 m, as well as Foundation width variations, for a more conservative approach. The most minor safety factor obtained was 1.440, and the largest was 4.654, with the maximum vertical load reaching 109.30 kN/m² at a depth of 1 m and a foundation width of 2 m. Keywords: Cohesive soil, physical properties, mechanical properties, element method, shallow footing

The Effect of Cross-Sectional Shape of Pile Foundation on the Bearing Capacity and Settlement for the Kobema Bengkulu SPAM Filter Building Ibtisamah, Athiyyah Meisu; Misliniyati, Rena; Amri, Khairul; Fikri, Muharram Nur; Supriani, Fepy
Rekayasa Sipil Vol. 19 No. 3 (2025): Rekayasa Sipil Vol. 19 No. 3
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2025.019.03.13

This study aims to investigate the impact of dimensional variations on the bearing capacity and settlement of filter buildings in the Benteng Kobema Bengkulu Regional Drinking Water Supply System (SPAM), which has a capacity of 380 L/second and plays a crucial role in providing clean water to the community. Given the potential risk of the Mentawai Pagai Megathrust subduction earthquake, it is necessary to evaluate the bearing capacity and settlement of building foundations. Based on the results of the Standard Penetration Test (SPT), the effect of variations on bearing capacity and settlement can be determined using two types of pile cross-sections, namely square and circular, accompanied by differences in pile cross-section dimensions, namely 300 mm, 400 mm, 500 mm, and depths of 7 m, 9 m, 11 m, and 13 m. The comparison is based on the bearing capacity of the foundation and the settlement of the pile foundation for the filter building of the SPAM Kobema Bengkulu project, using several methods: Poulos and Davis, Reese and Wright, Luciano Decourt, and the Finite Element Method. The smallest settlement is obtained by comparing the total settlement with the allowable settlement, which is 10% of the diameter. The test results show that the bearing capacity, deflection magnitude, and smallest settlement are below the permissible settlement limit, which is less than 10% of the foundation dimensions. The comparison between the static and numerical methods, or the Bearing Capacity Ratio (BCR), is closer to 1, indicating a more efficient and safer approach. In this analysis, a BCR value approaching one was obtained for a square-section foundation with a size of 500 mm, using the Reese and Wright method at a depth of 9 m. This yielded a bearing capacity of 312.04 tons for a single pile and 207.69 tons for a group of piles.

PENGETAHUAN MAHASISWA TEKNIK SIPIL UNIVERSITAS BENGKULU MENGENAI KESEHATAN DAN KESELAMATAN KERJA KONSTRUKSI Edriani, Annisa Fitria; Supriani, Fepy
JURNAL TEKNIK SIPIL Vol 9, No 2 (2020): Volume 9, Nomor 2, November 2020
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jts.v9i2.16366

: Dengan tetap tingginya angka kecelakaan kerja di Indonesia, bahkan seluruh dunia, diperlukan inovasi-inovasi dan pendekatan-pendekatan baru dalam usaha menekan angka kecelakaan kerja sektor konstruksi. Salah satu usaha yang dapat dilakukan adalah dengan memastikan calon pekerja sektor konstruksi, khususnya calon sarjana teknik sipil, memiliki pemahaman yang cukup mengenai K3 sebelum mereka menamatkan pendidikan lalu bekerja di sektor konstruksi. Penelitian ini dilakukan untuk mengetahui tingkat pemahaman mahasiswa tahun pertama mengenai K3 di sektor konstruksi kemudian membandingkannya dengan tingkat pemahaman mahasiswa tahun keempat. Pengambilan data dilakukan melalui penyebaran kuisioner kepada dua kelompok sampel tersebut. Kuisioner dikembangkan dalam bentuk penilaian diri (self-assessment). Hasil penelitian menunjukkan sebanyak 23.1% responden dari mahasiswa tahun pertama menjawab sangat buruk ketika ditanyakan apakah Anda mengetahui mengenai K3 konstruksi. Nilai tersebut menjadi 0% ketika pertanyaan yang sama ditanyakan kepada mahasiswa tahun keempat. Menanggapi pertanyaan bagaimana sikap Anda terhadap K3 konstruksi? sebanyak 35.9% (mayoritas) responden merespon dengan skor 3 (biasa). Mayoritas responden mahasiswa tahun keempat memberikan skor 4 atau sangat baik (46.5%). Mayoritas tingkat pengetahuan mahasiswa tahun pertama mengenai aturan (undang-undang, peraturan menteri, dll) K3 konstruksi berada pada tingkat buruk (35.9%) sedangkan mayoritas mahasiswa tahun keempat merasa tingkat pengetahuan mahasiswa tahun pertama mengenai aturan (undang-undang, peraturan menteri, dll) K3 konstruksi mereka baik (44.2%). Mahasiswa tahun keempat diberikan beberapa pertanyaan tambahan. Sebanyak 41.9% responden memberikan penilaian baik dan sebanyak 44.2% responden memberikan penilaian sangat baik terhadap pertanyaan bagaimana kualitas pengajaran mengenai K3 oleh dosen di Prodi Teknik Sipil Universitas Bengkulu?. Penulis menanyakan tingkat penekanan pentingnya K3 oleh dosen di Prodi Teknik Sipil Universitas Bengkulu dan hasil yang diberikan serupa dengan pertanyaan sebelumnya (mayoritas baik dan sangat baik).

STUDI RESISTENSI TANAH BERDASARKAN VARIASI KEDALAMAN KECEPATAN GELOMBANG GESER (Vs) DI KECAMATAN SELEBAR, KOTA BENGKULU Setiawan, Dedi; Mase, Lindung Zalbuin; Supriani, Fepy; Misliniyati, Rena; Amri, Khairul
Jurnal Geosaintek Vol. 11 No. 2 (2025)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v11i2.3075

Kecamatan Selebar merupakan salah satu kecamatan di Kota Bengkulu yang memiliki beberapa infrastruktur vital. Kondisi geologi yang beragam dan aktivitas seismik yang masif menjadikan kawasan ini sebagai lokasi penting dalam studi geoteknik. Penelitian ini bertujuan untuk mengeksplorasi hubungan antara kecepatan gelombang geser (Vs) terhadap resistensi tanah di Kecamatan Selebar berdasarkan parameter kecepatan gelombang geser rata-rata (Vs) pada kedalaman 10 hingga 50 m (Vs10, Vs20, Vs30, Vs40, dan Vs50), kelas situs dan Ground Amplification Factor (GAF). Penelitian ini menggunakan data sekunder dari perekaman mikrotremor sebanyak 40 titik yang kemudian dianalisis dan divisualisasikan dalam bentuk peta sebaran dua dimensi berbasis Geographic Information System (GIS). Interpolasi spasial dilakukan menggunakan metode Ordinary Kriging dengan Spherical Semivariogram Model dan Inverse Distance Weighting (IDW) untuk memperoleh distribusi sebaran yang lebih akurat. Hasil penelitian menunjukkan bahwa nilai Vs10, Vs20, Vs30, Vs40, dan Vs50 di Kecamatan Selebar berkisar antara 100 hingga 1.100 m/s, dengan peningkatan kekakuan tanah seiring bertambahnya kedalaman. Kecamatan Selebar didominasi oleh kelas situs C, dengan beberapa zona B dan D, serta GAF antara 0.9 hingga 1,7. Penelitian ini diharapkan dapat memberikan gambaran mengenai respons tanah dan dapat menjadi referensi dalam upaya mitigasi serta pertimbangan dalam perencanaan pembangunan infrastruktur tahan gempa di Kecamatan Selebar, Kota Bengkulu.

PENGARUH PENGGANTIAN SEBAGIAN SEMEN DENGAN ABU TERBANG (FLY ASH) DAN ABU CANGKANG LOKAN TERHADAP KUAT TEKAN PAVING BLOCK Marwan, Marwan; Supriani, Fepy; Afrizal, Yuzuar
Inersia: Jurnal Teknik Sipil Vol. 9 No. 1 (2017)
Publisher : Universitas Bengkulu

Paving block is used to fill the needs of surface pavement. This research uses waste of sea shell ash and fly ash as cement substitute material in the manufacture of paving blocks. Sea shell ash and fly ash containing calcium oxide (CaO) and silica oxide (SiO) that can replace and strengthen the chemical composition of cement. Variations of replacement much as 2.5%, 5%, 7.5% and 10% compared to normal compressive strength of the paving block (0%). Test specimen numbered 75 samples of rectangular with a length of 20 cm, width 10 cm and a thickness of 6 cm. Manufacture of paving blocks using conventional construction methods. The results of compressive strength testing of the age of 7 days, 14 days and 28 days for any 2 variations on the variations increase to 7.5% and down 10%. The results of the compressive strength largest average variation occurs in the replacement of 7.5% ie at the age of 7 days of 31.19 MPa, aged 14 days amounted to 33.55 MPa and 28 days amounted to 34.74 MPa. The percentage increase was highest compressive strength at 28 days with an increase of 23.19%.

PENGARUH METODE PERLAKUAN DALAM PERAWATAN BETON TERHADAP KUAT TEKAN DAN DURABILITAS BETON Supriani, Fepy; Islam, Mukhlis
Inersia: Jurnal Teknik Sipil Vol. 9 No. 2 (2017)
Publisher : Universitas Bengkulu

Concrete strength is influenced by several variables, among others by its constituent material, mix design, workmanship, and curing. The objective of concrete curing is to maintain the concrete in certain conditions after the dismantling of the formwork hence the optimization of concrete strength can be achieved close to the designed strength. This study aims to determine the effect of concrete curing on its compressive strength. Designed concrete compressivestrength of 20 MPa with slump values of 60-100 mm to be used. The specimens are cube-shaped with 15 cm dimension. Concrete compressive strength tests were conducted at 28 days and 56 days of concrete age. The types of concrete curing consist of 9 variations, i.e., not treated, water immersed and water sprinkling. Optimum 28 days age of compressive strength of concrete obtained from specimens that immersed in fresh water, which was 31,3 MPa. The concretespecimens that were put outdoor without any curing and treatment generates second highest compressive strength value of 28.6 MPa. The 28 days age of concrete compressive strength values cured with water sprinkling with addition of burlap wrapping are still under the compressive strength of uncured concrete. Significant changes to the strength of cured concrete occurred at age of 56 days and uncured concrete strength decreased up to 19%. The optimum increase occurred in concrete cured with burlap sack wrapping and water sprinkling that was conducted routinely for 3 days by 27,84%. With increasing age (durability) the treated concrete has better strength.

PENGARUH PENAMBAHAN ARANG SERBUK KAYU GERGAJI TERHADAP KUAT TEKAN MORTAR Manullang, Hotmalina; Supriani, Fepy; Gunawan, Agustin
Inersia: Jurnal Teknik Sipil Vol. 11 No. 1 (2019)
Publisher : Universitas Bengkulu

Mortar is a mixture of adhesive (Portland cement and limestone), sand, and water with a certain composition. Mortar is used in structural and nonstructural constructions. This research uses sawdust charcoal as cement addition because in similar research mention that wood charcoal contains silica. This research was aimed to know the value of compressive strength of the mortar (1:3 and 1:5) by using sawdust charcoal as cement addition. The method of manufacture and testing compressive strength of mortar refers to SNI 03-6825-2002. The mortar specimens is cube shaped with side 50 mm and the total of specimens have 112 mortar test specimens. Variations of sawdust charcoal used were 2,5%, 5%, 7,5%, 10%, 12,5% and 15% of the weight of cement. The range of initial flow values used are 105% - 115 (SNI 03-6882-2002). The specimens were soaked for 26 days and compressive strength test of mortar was performed at 28 days. The test results showed that the compressive strength value of normal mortar (1:3) of 25,09 MPa, the value of compressive strength of variation mortar 2,5%, 5%, 7,5%, 10%, 12,5% and 15% respectively are 25,89 MPa, 26,93 MPa, 27,84 MPa, 25,58 MPa, 20,68 MPa and 17,24 MPa. The value of compressive strength of normal mortar (1:5) of 15,48 MPa, the value of compressive strength of mortar variation 2,5%, 5%, 7,5%, 10%, 12,5% and 15% respectively are 15,83 MPa, 16,24 MPa, 17,01 MPa, 15,59 MPa, 14,45 MPa dan 12,26 MPa. The highest increase of compressive strength value in mixture 1:3 was variation 7,5% by 10,94% and mixture 1:5 was variation 7,5% by 9,90% from the compressive strength value of normal mortar.

Co-Authors Afrizal, Yuzuar Anggraini, Giovanny Dhebby Beriyadi, Agung Chaiyaput, Salisa Dedi Setiawan Dhanty Kirana, Virgie Edriani, Annisa Fitria Fikri, Muhammad Haikal Fikri, Muharram Nur Gunawan, Agustin Hanipa, Rerisa Al Hardiansyah Hardiansyah Hardiansyah Ibrahim, Zaky Majid Ibtisamah, Athiyyah Meisu Islam, Mukhlis Jonrinaldi Junasiq, M. Afra Kamal, Thomas Mustafa Khairul Amri Lindung Zalbuin Mase, Lindung Zalbuin Manullang, Hotmalina Marwan Marwan Misliniyati , Rena Misliniyati, Rena Purwaningsih, Annisa Indah Refrizon Refrizon Rifqi, Fianco Fakhri Sati, Rara Ayu Ugizaqiah, Olyvia Yuandita, Defina Yulianty, Chindy

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