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All Journal Inersia : Jurnal Teknik Sipil dan Arsitektur MEDIA KOMUNIKASI TEKNIK SIPIL IJOG : Indonesian Journal on Geoscience Journal of Engineering and Technological Sciences Jurnal HPJI (Himpunan Pengembangan Jalan Indonesia) Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Teknik Sipil Jurnal Fisika FLUX Teras Jurnal Potensi : Jurnal Sipil Politeknik Wikrama Parahita : Jurnal Pengabdian Masyarakat JTERA (Jurnal Teknologi Rekayasa) SIKLUS: Jurnal Teknik Sipil Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Jurnal Pensil : Pendidikan Teknik Sipil Jurnal Pendidikan Fisika dan Teknologi 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 Geosaintek RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi

Lindung Zalbuin Mase, Lindung Zalbuin

Department Of Civil Engineering, University Of Bengkulu, Bengkulu,

Author-ID : 619147

Astronomy Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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ANALISIS POTENSI LIKUIFAKSI DI KELURAHAN LEMPUING KOTA BENGKULU MENGGUNAKAN PERCEPATAN MAKSIMUM KRITIS Mase, Lindung Zalbuin; Somantri, Andri Krisnandi
Potensi : Jurnal Sipil Politeknik Vol 18, No 1 (2016): Potensi: Jurnal Sipil Politeknik
Publisher : Potensi : Jurnal Sipil Politeknik

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

Pada tanggal 12 September 2007, gempa dahsyat berkekuatan 7,9 SR, mengguncang Propinsi Bengkulu. Kejadian gempa tersebut menyebabkan kerugian yang besar, di antaranya runtuhnya bangunan rumah tinggal penduduk dan gedung, rusaknya sarana-prasarana infrastuktur, hingga terjadinya beberapa bencana ikutan lainnya, seperti longsoran dan likuifaksi. Fenomena likuifaksi akibat gempa tersebut, ditemui hampir secara massif di kawasan pesisir Provinsi Bengkulu. Salah satu daerah yang terkena dampak likuifaksi adalah Kelurahan Lempuing, yang letaknya di pesisir pantai barat sumatera. Belajar dari pengalaman di tahun 2007, sebuah studi mengenai potensi likuifaksi berdasarkan data penyelidikan tanah di Kelurahan Lempuing dirancang untuk dilakukan. Penelitian ini bertujuan untuk mengetahui potensi likuifaksi berdasarkan percepatan maksimum kritis yang menjadi syarat minimal percepatan maksimum gempa (peak ground acceleration (PGA)), yang memicu potensi likuifaksi dalam keadaan kritis atau yang memiliki faktor aman (FS) bernilai 1. Hasil analisis menunjukkan bahwa akibat PGA kritis rata-rata, nilai faktor aman yang dihasilkan berkisar antara 0,503 dan 2,64. Hasil analisis juga menunjukkan bahwa secara umum, likuifaksi berpotensi terjadi pada kedalaman 0 sampai 6 meter, meskipun pada titik penyelidikan tertentu likuifaksi juga berpotensi terjadi pada kedalaman 7,5 sampai 8,5 meter. Analisis probabilitas likuifaksi menunjukkan bahwa semakin besar faktor aman, maka probabilitas likuifaksi menjadi semakin kecil. Hasilanalisis ini juga menunjukkan bahwa probabilitas kritis untuk FS = 1, bernilai 0,54 (54%). Kata

Experimental Liquefaction Study of Southern Yogyakarta Using Shaking Table Mase, Lindung Zalbuin
Jurnal Teknik Sipil Vol 24, No 1 (2017)
Publisher : Institut Teknologi Bandung

AbstractAn experimental study using shaking table was conducted to learn liquefaction. Samples used were sandy soils from South of Yogyakarta Special Region Province. Analysis of liquefaction potential was performed by considering several factors, i.e. peak ground acceleration (PGA) of 0.3 g to 0.4 g, vibrational frequency of 1.8 Hz, and vibration duration of 8, 16, and 32 seconds which reflect earthquake magnitudes of 5, 6, and 7. The pore water pressure was measured by using a pressure transducer. Liquefaction potential was determined by using the parameter of excess pore water pressure ratio (ru). Liquefaction potentially occurred when ru > 1, whereas ru < 1 indicated liquefaction didnât occur. The results of test showed that liquefaction potentially occur in each applied dynamic load, that maximum excess pore wate pressure (ru max) measured was equal to or larger than 1. The larger peak ground acceleration applied, the faster beginning time of liquefaction. The bigger peak ground acceleration applied, the slower dissipation time of pore water pressure. The duration of liquefaction become longer, along with the increase of applied peak ground acceleration. The bigger applied peak ground acceleration, the larger maximum excess pore water pressure.AbstrakSebuah penelitian eksperimetal dengan menggunakan alat shaking table (meja getar) dilakukan untuk mempelajari likuifaksi. Bahan uji yang digunakan adalah tanah pasir yang diambil dari daerah selatan Provinsi Daerah Istimewa Yogyakarta. Analisis potensi likuifaksi dilakukan dengan mempertimbangkan beberapa parameter di antaranya percepatan maksimum gempa (PGA) sebesar 0,3 g sampai dengan 0,4 g, frekuensi getaran 1,8 Hz, dan waktu penggetaran selama 8, 16 dan 32 detik yang mewakili gempa denganÂ magnitudo 5, 6, dan 7. Alat pembacaan tekanan air pori yang digunakan adalah pressure tranducer. Likuifaksi ditentukan dengan menggunakan parameter rasio peningkatan tekanan air (ru). Likuifaksi berpotensi terjadi apabila nilai ru > 1, sedangkan nilai ru < 1 mengindikasikan bahwa likuifaksi tidak berpotensi terjadi. Hasil pengujian menunjukkan bahwa pasir dari selatan Provinsi Daerah Istimewa Yogyakarta berpotensi likuifaksi untuk setiap beban dinamik yang diberikan, dimana nilai rasio peningkatan tegangan air pori maksimum (ru max) yang diperoleh bernilai lebih besar atau sama dengan satu. Semakin besar percepatan maksimum yang diterapkan, maka waktu dimulainya likuifaksi semakin cepat. Semakin besar percepatan maksimum yang diberikan, maka waktu terdisipasinya tegangan air pori akan semakin lambat. Durasi terjadinya likuifaksi menjadi semakin lama, seiring dengan bertambahnya percepatan maksimum yang diterapkan. Semakin besar percepatan maksimum yang diterapkan, maka semakin besar pula tegangan air pori maksimum yang dihasilkan.Â

Studi Kehandalan Metode Analisis Likuifaksi Menggunakan SPT Akibat Gempa 8,6 Mw, 12 September 2007 di Area Pesisir Kota Bengkulu Mase, Lindung Zalbuin
Jurnal Teknik Sipil Vol 25, No 1 (2018)
Publisher : Institut Teknologi Bandung

AbstrakNaskah ini menyajikan hasil studi potensi likuifaksi di kawasan pesisir Kota Bengkulu, berdasarkan gempa berkekuatan 8,4 Mw, yang terjadi pada 12 September 2007 silam. Penelitian ini dilakukan dengan menganalisis potensi likuifaksi berdasarkan data SPT menggunakan metode empiris yang paling sesuai dari beberapa metode empiris yang lazim digunakan. Untuk memperoleh metode analisis yang paling sesuai, dilakukanlah perbandingan hasil analisis dengan data kejadian likuifaksi di lapangan. Metode yang paling sesuai adalah metode yang memiliki nilai faktor bobot kesalahan terendah. Metode tersebut selanjutnya digunakan untuk menentukan faktor keamanan likuifaksi nilai probabilitas likuifaksi (PL). Hasil penelitian ini memperlihatkan bahwa Metode Idriss-Boulanger merupakan metode yang paling mendekati dalam mengestimasi kesesuaian prediksi dan kejadian di lapangan. Berdasarkan hasil analisis menggunakan metode tersebut, likufaksi sangat berpotensi terjadi pada area yang diteliti. Kondisi kritis likuifaksi (faktor aman sama dengan 1) dapat terjadi dengan nilai probabilitas sebesar 0,495 khususnya pada tanah pasir sedang sampai dengan padat.AbstractThis paper presents a study of liquefaction potential in coastal area of Bengkulu City caused during the 8.4 Mw earthquake event on 12 September 2007. To determine the most suitable method, all methods are compared with the liquefaction event data, by fitting concept. The most suitable method was selected as the smallest error weighted factor. The suitable method is then used to determine factor of safety (FS) against liquefaction and probability of liquefaction (PL). The result shows that the suitable method in estimating the suitability of prediction and field data is Idriss-Boulanger method. In general, Liquefaction could occur at the investigated area. The critical condition of liquefaction could happen with PL of 0.495, especially medium-dense sands.Â

THE EMPIRICAL ANALYSIS OF SOIL LIQUEFACTION IN IMOGIRI SITE, YOGYAKARTA, INDONESIA Mase, Lindung Zalbuin
Potensi : Jurnal Sipil Politeknik Vol 21, No 1 (2019): Potensi: Jurnal Sipil Politeknik
Publisher : Politeknik Negeri Bandung

A strong earthquake with magnitude of 6.3 Mw, which was later known as the JogjaEarthquake, occurred in the southern part of Yogyakarta Special Province. The earthquakehad resulted in the huge damage to the buildings, public facilities as well as triggering theground failure phenomenon, which was known as liquefaction. An empirical analysis usingthe conventional method was performed to investigate the liquefaction severity for the siteinvestigation data in Imogiri, a site with the high-level of the liquefaction damage duringthe earthquake. The peak ground accelerations varied to 0.3 to 0.4g are also implemented inthe analysis. The results show that the investigated site is dominated by sandy soils. Thesandy soil in Imogiri site is categorised as the liquefiable layer during the Jogja Earthquakeand potentially to liquefy on shallow depth. In general, this study could warn the people forthe impact of soil liquefaction if the stronger earthquake happens in the future.

Liquefaction Potential Analysis Along Coastal Area of Bengkulu Province due to the 2007 Mw 8.6 Bengkulu Earthquake Mase, Lindung Zalbuin
Journal of Engineering and Technological Sciences Vol 49, No 6 (2017)
Publisher : ITB Journal Publisher, LPPM ITB

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

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.

Liquefaction Susceptibility Zonation in Lempuing Subdistrict, Bengkulu City, Indonesia Mase, Lindung Zalbuin
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 25, Nomor 2, DESEMBER 2019
Publisher : Department of Civil Engineering, Diponegoro University

Zonation of liquefaction potential is the important thing in understanding the liquefaction impact on an area. The liquefaction Severity Index (LSI) method can be applied to determine the liquefaction vulnerability level. This paper presents a study of liquefaction using LSI method to compose the liquefaction vulnerability map in a coastal area of Bengkulu City i.e., Lempuing Subdistrict. This study was conducted by analyzing CPT data in Lempuing Subdistrict to obtain the Factor of Safety and the probability of liquefaction. Peak Ground Acceleration (PGA) was assumed as 0.5g, which refers to SNI 03-1726-2012. Furthermore, the value of liquefaction probability and factor of safety obtained was analyzed to obtain LSI index and adjusted to the specific categories i.e., very low (0<LSI<15), low (15<LSI<35), moderate (35<LSI<65), high (65<LSI<85), and very high (85<LSI<100). Based on the analysis result, Lempuing Subdistrict was categorized as a very high to the very low susceptible area to liquefaction. The very high susceptible area was located on the eastern Lempuing Subdistrict bordering to the Gading Cempaka Subdistrict. The high susceptible area was located on the northern Lempuing Subdistrict bordering the Tanah Patah Subdistrict. Moderate to very low susceptible areas were located in the middle, west, and south of Lempuing Subdistrict.

SEISMIC RESPONSE VALIDATION OF SIMULATED SOIL MODELS TO VERTICAL ARRAY RECORD DURING A STRONG EARTHQUAKE Misliniyati, Rena; Mase, Lindung Zalbuin; Irsyam, Masyhur; Hendriawan, Hendriawan; Sahadewa, Andika
Journal of Engineering and Technological Sciences Vol 51, No 6 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

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

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 Mase, Lindung Zalbuin; Likitlersuang, Suched
Indonesian Journal on Geoscience Vol 8, No 3 (2021)
Publisher : Geological Agency

It 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.

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

Penggunaan Parameter Gerakan Tanah untuk mengidentifikasi Likuifaksi selama Gempa Besar di Thailand Utara Mase, Lindung Zalbuin
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 27, Nomor 1, JULI 2021
Publisher : Department of Civil Engineering, Diponegoro University

This paper presents a ground response analysis to simulate the liquefaction phenomenon during the 2011 Tarlay Earthquake in northern Thailand. The site investigation data and geophysical measurements on 7 sites in northern Thailand were collected. The multi-springs element model was implemented in finite element ground response analysis. Several parameters, such as peak ground acceleration, peak ground velocity, amplification factor, excess pore pressure ratio, were observed. Furthermore, the correlation from the ground motion parameters was generated to estimate liquefaction potential, which was represented by excess pore pressure ratio. The result showed that the excess pore pressure ratio was relatively well correlated with several ground parameters, such as amplification factor, velocity-acceleration ratio, and factor of safety against liquefaction. The results could be also used for the engineering practice in predicting liquefaction potential in Northern Thailand.

Co-Authors Aditia Febriansya Ahmad, Debby Ariansyah Ambar Susanto, Ambar Andika Sahadewa Andri Krisnandi Somantri Andri Krisnandi Somantri, Andri Krisnandi Anggraini, Giovanny Dhebby Annisa Zahara Arif Ismul Hadi Chaiyaput, Salisa Dedi Setiawan Dewi Amalia Elvandani, Yogi Fadli, Darmawan Ikhlas Fahrezi, Zhehan 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 Ivana, Nurdila Junasiq, M. Afra Kamal, Thomas Mustafa Khairul Amri Khairul Amri Krisologus, Yulianto Petrus Likitlersuang, Suched lndah, Risma Nur Masyhur Irsyam Misliniyati , Rena Misliniyati, Rena Misliniyati, Rena Muhammad Farid Mulyadi Yuswandono Nirvana, Aura Novtrisa, Indri Pranata, Andhika Priani, Anggela Agus Putri, Melly Zuhadjar Raafidiani, Reni Refrizon Refrizon Rena Misliniyati Rena Misliniyati Rifqi, Fianco Fakhri Sahadewa, Andika Sanniyah, Salwa Siti Sihombing, Atmy Verani R Sihombing, Atmy Verani R. Siti Patimah Suched Likitlersuang Supriani, Fepy Susanti, Dwi Dzulma Teuku Faisal Fathani Valetta, Fitria Leonni ‎Hardiansyah, Hardiansyah

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