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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Teknik IJOG : Indonesian Journal on Geoscience Journal of Engineering and Technological Sciences Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Teknisia Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Teknik Sipil Teras Jurnal Potensi : Jurnal Sipil Politeknik Wikrama Parahita : Jurnal Pengabdian Masyarakat JTERA (Jurnal Teknologi Rekayasa) SIKLUS: Jurnal Teknik Sipil Jurnal Pendidikan Fisika dan Teknologi TAPAK (Teknologi Aplikasi Konstruksi) : Jurnal Program Studi Teknik Sipil RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Inersia : Jurnal Teknik Sipil Indonesian Journal on Geoscience Indonesian Journal on Geoscience Journal Innovation of Civil Engineering (JICE) Cantilever: Jurnal Penelitian dan Kajian Bidang Teknik Sipil Journal of the Civil Engineering Forum Makara Journal of Technology Jurnal Ilmu dan Inovasi Fisika Edubiotik : Jurnal Pendidikan, Biologi dan Terapan Jurnal Geosaintek RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Lindung Zalbuin Mase, Lindung Zalbuin
Department Of Civil Engineering, University Of Bengkulu, Bengkulu,
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Liquefaction Potential Analysis Along Coastal Area of Bengkulu Province due to the 2007 Mw 8.6 Bengkulu Earthquake Lindung Zalbuin Mase
Journal of Engineering and Technological Sciences Vol. 49 No. 6 (2017)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2017.49.6.2

Abstract

This paper presents a seismic response analysis study of liquefiable sites along the northern parts of the coastal area of Bengkulu Province that underwent liquefaction phenomena during the strong earthquake (8.6 Mw) on 12 September 2007. Several investigation tests, including the standard penetration test (SPT) and the soil shear wave velocity test, were conducted at 8 locations. The data were used to simulate the seismic response in order to investigate soil behaviors during the earthquake. In addition, the excess pore water pressure ratio obtained from the analysis was compared with the prediction value calculated from empirical data. The results show that liquefaction can occur at shallow depth layers dominated by loose sand. The results also confirm field evidence collected during the earthquake that was reported in several previous studies. The excess pore water pressure ratio was in good agreement with the predicted value from the empirical approach.
Seismic Response Validation of Simulated Soil Models to Vertical Array Record During A Strong Earthquake Rena Misliniyati; Lindung Zalbuin Mase; Masyhur Irsyam; Hendriawan Hendriawan; Andika Sahadewa
Journal of Engineering and Technological Sciences Vol. 51 No. 6 (2019)
Publisher : Institute for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2019.51.6.3

Abstract

Several soil models, such as linear elastic, equivalent linear, and non-linear models, are employed in seismic ground response analysis. The aim of this study was to validate the seismic responses at ground surface of several soil models with the vertical array record of the Kobe earthquake. One-dimensional seismic response analyses were performed at Port Island using several soil models. The responses at ground surface from the simulated soil models were validated with the vertical array record of the Kobe earthquake. The results showed that the extended hyperbolic model yielded the most appropriate response according to the Kobe earthquake's recorded motion. This means that this model can be considered a suitable soil model to predict the response of strong earthquakes. In general, the results support the recommendation to select the most appropriate soil model for seismic ground response analysis.
Implementation of Seismic Ground Response Analysis in Estimating Liquefaction Potential in Northern Thailand Lindung Zalbuin Mase; Suched Likitlersuang
Indonesian Journal on Geoscience Vol 8, No 3 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.3.371-383

Abstract

DOI:10.17014/ijog.8.3.371-383It has been known that northern Thailand is an active tectonic region in Southeast Asia. Some earthquakes with low to medium magnitudes had occurred in northern Thailand. The Mw6.1 Mae Lao Earthquake occurred on May 5th, 2014 in Chiang Rai Province. The earthquake also resulted in the unique phenomenon of ground failure, which was known as liquefaction. Learning from the event, the liquefaction potential based on seismic ground response analysis was performed. Several site investigations including standard penetration test and seismic down-hole test in Chiang Rai Province were carried out. The next generation attenuation model was conducted to generate the ground motion for nonlinear seismic response analysis. The peak ground acceleration at the ground surface from seismic ground response analysis was used to analyze the empirical analysis of liquefaction potential. The results show that liquefaction could occur at the investigated locations during the earthquake. The results also confirm the liquefaction evidence found in Chiang Rai Province during the Mw 6.1 Mae Lao Earthquake. This research can help the people to consider the earthquake impacts to northern Thailand.
Seismic Response Analysis along the Coastal Area of Bengkulu during the September 2007 Earthquake Mase, Lindung Zalbuin
Makara Journal of Technology Vol. 22, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A strong earthquake of 8.4 Mw occurred at the Sumatra Subduction Zone in September 12, 2007. The area that underwent the impact of the earthquake was located along the coastal area of the Bengkulu Province. A seismic ground response study was then performed with reference to the event. Several site investigations, including standard penetration test and shear wave velocity tests, were conducted to understand the subsoil condition. The data were used to analyze a ground response during the earthquake. The amplification factor of each site was obtained, and a comparison of the spectral accelerations was performed. The results showed that the study area could undergo an amplification factor ranging from 1.1 to 1.5 during the seismic wave propagation. The spectral acceleration that resulted from the seismic response analysis was also within the design value. The study results could generally bring awareness to local engineers to consider the seismic design value for the coastal area of the Bengkulu Province, particularly if a stronger earthquake happens in the future.
Liquefaction Potential Analysis Based on Nonlinear Ground Response on the Coastline of Bengkulu City, Indonesia Mase, Lindung Zalbuin
Makara Journal of Technology Vol. 24, No. 1
Publisher : UI Scholars Hub

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Abstract

This paper presents the study of the seismic response and liquefaction potential of the coastal area of Bengkulu City during the September 2007 Sumatra earthquake. The study is conducted by collecting site investigation data (standard penetration test) and applying input motion to observe soil response. Synthetic ground motion is generated by considering the important aspects of earthquakes, including focal depth, epicenter, earthquake source, and site classification. The synthetized ground motion is then used as the input motion in the seismic response analysis. The results of this analysis are spectral acceleration and peak ground acceleration at each depth. The resulting spectral acceleration is compared with that specified in the seismic design code of Indonesia (SNI 03-1726-2012). Liquefaction potential analysis is performed on the basis of the results of the seismic response analysis. Results show that spectral acceleration depends on soil type. A high soil density equates to a low spectral response. The designed spectral acceleration may still be considered for each borehole, especially for T (period) < 1. However, for T > 1, spectral acceleration should be prioritized, especially for high-rise building construction. The liquefaction analysis reveals that a shallow depth is vulnerable to liquefaction. In general, this study could give a better understanding on the implementation of seismic ground response for liquefaction potential analysis.
Implementation of Seismic Ground Response Analysis in Estimating Liquefaction Potential in Northern Thailand Lindung Zalbuin Mase; Suched Likitlersuang
Indonesian Journal on Geoscience Vol. 8 No. 3 (2021)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.8.3.371-383

Abstract

DOI:10.17014/ijog.8.3.371-383It has been known that northern Thailand is an active tectonic region in Southeast Asia. Some earthquakes with low to medium magnitudes had occurred in northern Thailand. The Mw6.1 Mae Lao Earthquake occurred on May 5th, 2014 in Chiang Rai Province. The earthquake also resulted in the unique phenomenon of ground failure, which was known as liquefaction. Learning from the event, the liquefaction potential based on seismic ground response analysis was performed. Several site investigations including standard penetration test and seismic down-hole test in Chiang Rai Province were carried out. The next generation attenuation model was conducted to generate the ground motion for nonlinear seismic response analysis. The peak ground acceleration at the ground surface from seismic ground response analysis was used to analyze the empirical analysis of liquefaction potential. The results show that liquefaction could occur at the investigated locations during the earthquake. The results also confirm the liquefaction evidence found in Chiang Rai Province during the Mw 6.1 Mae Lao Earthquake. This research can help the people to consider the earthquake impacts to northern Thailand.
PENGARUH NANO-MATERIAL DAN BIOPOLIMER TERHADAP KARAKTERISTIK TANAH LUNAK UNTUK DESAIN PERKERASAN JALAN Sanniyah, Salwa Siti; Sihombing, Atmy Verani R.; Mase, Lindung Zalbuin; Susanto, Ambar; Somantri, Andri Krisnandi; Krisologus, Yulianto Petrus
Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Vol. 10 No. 1 (2024)
Publisher : Himpunan Pengembangan Jalan Indonesia (HPJI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26593/jhpji.v10i1.7648.53-64

Abstract

Abstract The effect of soft soil modification using nano-materials and biopolymers on road pavement design is discussed in this paper. The nano-materials and biopolymers used in this research are nano-lime and nano-silica, with the biopolymer in the form of chitosan from shrimp shells. First, soil mixed with nano-materials with 1-5 matrix variations and 4 variations of biopolymer mixture (0.05%, 0.1%, 0.15%, and 0.2%) were tested in the laboratory to determine the effect of nano-materials and biopolymers on soft soil characteristics, which are expressed by the Atterberg Limit and California Bearing Ratio. Next, the data obtained was used to design road pavement. This study shows that the addition of nano-materials and biopolymers improves soil characteristics, both at the Atterberg Limit and the California Bearing Ratio of the soil. This soil improvement can reduce the thickness of the road pavement by 18.18%. Keywords: soft soil; nano-materials; biopolymers; road pavement; road Abstrak Pengaruh modifikasi tanah lunak menggunakan nano-material dan biopolimer terhadap desain perkerasan jalan dibahas pada tulisan ini. Nano-material dan biopolimer yang digunakan pada penilitian ini adalah nano-kapur dan nano-silika, dengan biopolimer berupa chitosan dari kulit udang. Pertama, tanah campuran nano-material dengan variasi matriks 1-5 dan 4 variasi campuran biopolimer (0,05%, 0,1%, 0,15%, dan 0,2%) diuji di labora-torium untuk mengetahui pengaruh nano-material dan biopolimer terhadap karakteristik tanah lunak, yang dinya-takan dengan Atterberg Limit dan California Bearing Ratio. Selanjutnya, data yang diperoleh digunakan untuk merancang perkerasan jalan. Penelitian ini menunjukkan bahwa penambahan nano-material dan biopolimer memperbaiki karakteristik tanah, baik pada Atterberg Limit maupun pada California Bearing Ratio tanah tersebut. Perbaikan tanah ini dapat mengurangi tebal perkerasan jalan sebesar 18,18%. Kata-kata kunci: tanah lunak; nano-material; biopolimer; perkerasan jalan; jalan
Upaya Peningkatan Budaya Sadar Bencana Gempa Melalui Analisis Statistik Parameter Geofisika di Kota Bengkulu, Indonesia Misliniyati, Rena; Mase, Lindung Zalbuin; Refrizon, Refrizon
Wikrama Parahita : Jurnal Pengabdian Masyarakat Vol. 8 No. 1 (2024): Mei 2024
Publisher : Universitas Serang Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30656/jpmwp.v8i1.6891

Abstract

Potensi gempa bumi yang sewaktu-waktu dapat terjadi kerap menjadi isu utama bagi pembangunan dan masyarakat. Upaya peningkatan budaya sadar bencana gempa perlu dilakukan guna memberikan edukasi dalam menyikapi bahaya gempa yang dapat terjadi di Kota Bengkulu. Kegiatan ini dilakukan dalam rangka pelaksanaan kegiatan pengabdian berbasis riset, dimana pengukuran geofisik digunakan untuk mendeskripsikan kerentanan seismik Kota Bengkulu, melalui kerja sama kemitraan oleh Badan Penang­gulangan Bencana Daerah (BPBD) Kota Bengkulu. Hasil pengukuran geofisik selanjutnya diolah lebih lanjut untuk mendapatkan parameter amplifikasi (A0) dan frekuensi dominan (f0). Kedua parameter tersebut kemudian dianalisis untuk mendeskripsikan indeks kerentanan seismik (Kg) di Kota Bengkulu. Pema­paran hasil analisis juga dilakukan sebagai transfer pemahaman kerentanan seismik kepada mitra. Hasil kegiatan memperlihatkan bahwa terdapat 211 titik yang diinvestigasi. Secara umum tingkat kerentanan seismik di Kota Bengkulu rata-rata pada level rendah dengan sangat tinggi dengan nilai kerentanan rata-rata berkisar pada 2,69 sampai dengan 36,31. Kecamatan Ratu Samban, Ratu Agung, Gading Cempaka, Kampung Melayu, dan Teluk Segara digolong­kan sebagai wilayah dengan kerentanan sangat tinggi, dengan nilai maksimum rerata sebesar 36,31. Kecamatan Selebar dan Singaran Pati digolongkan sebagai wilayah dengan kerentanan tinggi dengan nilai maksimum rerata sebesar 5,97, Kecamatan Sungai Serut dengan kerentanan sedang dengan nilai maksimum rerata 4,41, dan Kecamatan Muara Bangka­hulu dengan kerentanan rendah dengan nilai maksimum rerata 2,69. Kegiatan ini membantu mitra dalam memetakan kerentanan seismik di Kota Bengkulu.
Pengaruh Usia Stabilisasi Tanah Gambut Melalui Bioaugmentasi Oleh Bakteri Pseudomonas Taiwanensis Gulo, Elrich Gratiawan WD; Amalia, Dewi; Mase, Lindung Zalbuin; Yulianto, Faisal Estu
Siklus : Jurnal Teknik Sipil Vol. 9 No. 2 (2023): Siklus: Jurnal Teknik Sipil
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/siklus.v9i2.16064

Abstract

Sebelum membangun di atas tanah gambut harus dilakukan perlakuan treatment khusus agar struktur yang dibangun dapat stabil. Salah satu metode yang telah diusulkan untuk memperbaiki sifat tanah gambut adalah stabilisasi tanah biologis melalui pendekatan bioteknologi. Metode bioaugmentasi merupakan salah satu pendekatan perbaikan tanah yang ramah lingkungan. Penelitian ini bertujuan untuk mempercepat dekomposisi serat gambut, menurunkan kadar air dan mengatasi tingkat keasaman yang tinggi pada tanah gambut. Dalam studi eksperimen ini, bakteri pseudomonas taiwanensis digunakan sebagai agen dalam proses bioaugmentasi, karena memiliki kemampuan yang tinggi dalam dekomposisi serat gambut. Hasil penelitian menunjukkan bahwa penambahan bakteri pseudomonas taiwanensis sebesar 5% di masa pemeraman 28 hari berhasil mengurangi kadar air hingga 309,45%, dari awalnya 704,02% menjadi 394,57%. Selain itu, terjadi peningkatan signifikan pada nilai pH, dari 3,2 menjadi 6,5, pada semua variasi sampel. Oleh karena itu, dapat disimpulkan bahwa bakteri pseudomonas taiwanensis dapat efektif meningkatkan sifat fisik tanah gambut.
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

Abstract

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.
Co-Authors AGUS SUYONO Ahmad, Debby Ariansyah Amalia , Dewi Ambar Susanto, Ambar Andika Sahadewa Andri Krisnandi Somantri Andri Krisnandi Somantri, Andri Krisnandi Anggraini, Giovanny Dhebby Annisa Zahara Azzahra, Raisya Chaiyaput, Salisa Dewi Amalia Dhanty Kirana, Virgie Ega Yulita Sari, Ega Yulita Elvandani, Yogi Endarina, Nurul Dwi Ery Radya Juarti, Ery Radya Faisal Estu Yulianto, Faisal Estu FEPY SUPRIANI Fikri, Muhammad Haikal Gita Aprilia Gulo, Elrich Gratiawan WD Gusta Gunawan Hanipa, Rerisa Al Hardiansyah Hardiansyah Hardiansyah Hendriawan Hendriawan Hendriawan, Hendriawan Ibrahim, Zaky Majid Ivana, Nurdila Junasiq, M. Afra Kamal, Thomas Mustafa Khairul Amri Khairul Amri Krisologus, Yulianto Petrus Kusuma, Yusmiati Likitlersuang, Suched Lubis, Aminah Rahmadhani Masyhur Irsyam Misliniyati , Rena Misliniyati, Rena Misliniyati, Rena Muhammad Farid Nirvana, Aura Nurfikri, Muharram Pranata, Andhika Purwaningsih, Annisa Indah Putri, Melly Zuhadjar Qotrunnada, Mutia Refrizon Refrizon Rena Misliniyati Rena Misliniyati Rifqi, Fianco Fakhri Sahadewa, Andika Sanniyah, Salwa Siti Saputra, Ramadhani Niko Sihombing, Atmy Verani R. Suched Likitlersuang Supriani, Fepy Teuku Faisal Fathani Valetta, Fitria Leonni