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All Journal The Jurnal Arsip Rekayasa Sipil dan Perencanaan (Journal of Archive in Civil Engineering and Planning) Aceh International Journal of Science and Technology
Bambang Setiawan
Program Studi Teknik Geologi, Fakultas Teknik Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Transportation

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ANALISIS KERENTANAN TANAH TERHADAP BAHAYA LIKUIFAKSI BERDASARKAN DATA PENGUJIAN SPT Muhammad Kautsar Rizki; Halida Yunita; Bambang Setiawan; Zulkifli Zulkifli
Jurnal Arsip Rekayasa Sipil dan Perencanaan Vol 4, No 4 (2021): Jurnal Arsip Rekayasa Sipil dan Perencanaan
Publisher : Prodi Magister Teknik Sipil Unsyiah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jarsp.v4i4.25575

Abstract

Aceh is a province in Indonesia that was hit significantly by the 26 December 2004 disaster. The province was also hit by the M 6.5 Pidie Jaya earthquake on 7 December 2016. Several damages induced by liquefaction, i.e., sand boils, were observed in these two seismic events. Liquefaction is defined as the transformation of granular material from a solid to a liquefied state. This Liquefaction phenomenon can cause damage to buildings and infrastructures built on it. This study presents the results of liquefaction assessment using the standard penetration test (SPT). A borehole was sunk at Rundeng Village, Johan Pahlawan sub-distrit, Aceh Barat distrit to collect the SPT data. This location was selected as several facts, i.e., low water table, built of sand layer, and high seismicity region were suggested for this Rundeng village. Three different models of  Esteva (1974), Donovan (1970), and Mc Guirre (1977) were used to estimate the cyclic stress ratio (CSR). A model developed by Seed and Idriss (1982) was employed to estimate the cyclic resistance ratio (CRR). From the calculation of potential liquefaction evaluation, the cyclic stress ratio (CSR) value highly depends on the earthquake magnitude. The greater the earthquake magnitude, the greater the CSR value becomes. Soil layers from SPT data at a depth of 3,50 m – 13,00 m have a value of (N1)60cs 30 which means the soil is too dense to liquefy and classified as non-liquefiable soil. From the SPT data, it can be seen the soil will be liquefied if an earthquake with a magnitude ≥ 8 occurs.
Quantifying the Seismicity Parameters of A New Model of Seismic Source Zone for Aceh and Surrounding Areas Juellyan Juellyan; Bambang Setiawan; Muttaqin Hasan; Taufiq Saidi
Aceh International Journal of Science and Technology Vol 11, No 3 (2022): December 2022
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (846.926 KB) | DOI: 10.13170/aijst.11.3.28360

Abstract

Aceh is justified as one of the Indonesian provinces with a high level of seismicity. This high seismicity certainly has a severe negative impact on various aspects of human life in Aceh and the surrounding areas. Various types of efforts must be carried out to solve and mitigate the problem caused by each earthquake in Aceh and the surrounding areas. One aspect that can be carried out to minimize the hazards of seismic activity is the characterization of the source of the earthquake. This characterization can be used for various purposes for further seismic-related studies, including for studying seismic hazard analysis using the probabilistic seismic hazard analysis (PSHA) method. This research aims to determine the characteristics of the seismic source zones for Aceh and the surrounding areas. Based on the geological setting and seismicity catalog data of Aceh and the surrounding areas, a new model of seismic source zones was developed. This new model proposed for Aceh and the surrounding areas is divided into four zones: shallow background seismic source zones (divided into two source zones), two deep background seismic source zones, two megathrust source zones, and one fault zone, namely the Sumatra fault zone. The results of this study suggest that Zone I and Zone II of shallow background seismic source zones have a-values of 2.36 and 4.7, b-values of 0.545, and Mmax of 7.7 and 6.8. Deep background seismic source zone I has an a-value of 4.43 and a b-value of 0.9 with a maximum magnitude of 7 Mw. Meanwhile, deep background seismic source zone II has an a-value of 3.28 and a b-value of 0.755 with a maximum magnitude of 6.1 Mw. Megathrust seismic source zone I has an a-value of 3.53 and a b-value of 0.691 with a Mmax of 7.7 Mw. Meanwhile, the megathrust seismic source zone II has an a-value of 3.81 and a b-value of 0.702 with a Mmax of 7.1 Mw. Sumatra fault seismic source zone has an a-value of 2.88 and a b-value of 0.615 with a Mmax of 6.7 Mw.
Co-Authors Halida Yunita Heni Pujiastuti Juellyan Juellyan Muhammad Kautsar Rizki Muttaqin Hasan Taufiq Saidi