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All Journal Journal of Geosciences and Applied Geology
Agung Mulyo
Departemen Geologi Terapan, Fakultas Teknik Geologi, Universitas Padjadjaran
Earth & Planetary Sciences Engineering

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Shallow Bearing Capacity in Cilengkrang, Bandung, West Java, Indonesia Nur Khoirullah; Annisa Ayungingtyas Pratiwi Adiwijaya; Irvan Sophian; Agung Mulyo; Dicky Muslim; Zufialdi Zakaria
Journal of Geological Sciences and Applied Geology Vol 3, No 3 (2019): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v3i3.26226

Abstract

Cilengkrang is located on the eastern side of Bandung City, West Java Indonesia. This area is surrounded by the district of Cimenyan, Cijambe, Cileunyi, and Ujung Berung. The population growth in Cilengkrang area has experienced 1.8% over the last six years as evidenced by the quantity of new housing complexes being built. Due the limitations on available land the development of housing complex is predicted settled in Cilengkrang District. This paper is aimed to determine the characteristic of shallow bearing capacity foundation, as an important factor on constructing a housing complex. To analyze shallow bearing capacity, the soil mechanics data is tested in the laboratory. These samples are taken in 14 sites distribute randomly.  Based on the field mapping, the soil that covers the research area is dominated by fine-grained soil as the residual and transported soil product of young and old volcanic products. Based on Universal Classification of Soil (USCS), the high plasticity silt (MH) is dominating this area than the low plasticity silt (ML) and high plasticity clay (CH). Based on shallow bearing capacity foundation data, the allowable bearing capacity in this area ranging from 19.42 to 70 Ton/m2 on square footing. The circular footing values ranging from 19.35 to 69.93 Ton/m2, and continuous footing values ranging from 15.47 to 52.77 Ton/m2.
Mapping the Level of Earthquake Risk of Holtekamp Bridge at Jayapura Based on Earthquake Data and Microtremor Measurement Doodle Dandy Waromi; Nur Khoirullah; Dicky Muslim; Agung Mulyo
Journal of Geological Sciences and Applied Geology Vol 2, No 5 (2018): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i5.20321

Abstract

Holtekamp bridge which is located in Jayapura region between Hamadi and Holtekamp Village inthe Northern part of Papua island. The region constitutes an active earthquake zone with therecurrence frequency and magnitude of the earthquake are relatively high. The region is locatedon an active fault zone. The seismotectonics setting in this region is directly implied to thecalculations of the seismic design for engineering and design purposes on building and non-buildingstructures including Holtekamp bridge in Jayapura city. To recognize a characteristic of theearthquake at the site of interest, the historical earthquakes (background) data surrounding thestudy area. Local microtremor measurements data are analyzed by means of a probabilisticseismic hazard analysis (PSHA). Deterministic seismic hazard analysis (DSHA) using someground-motion models in attenuation relationship equations. In resulting of seismic hazardparameter as represented by peak ground acceleration (PGA), values in earthquake scenario atoperating basis earthquake (OBE), maximum design earthquake (MDE), and maximum credibleearthquake (MCE) conditions. These values are used as a reference to evaluate the complianceof the current technical aspects with the new required design facing the updated seismicityparameters.Keyword : Jayapura, Holtekamp, seismic Hazard Analysis, Peak Ground Acceleration.
Co-Authors Annisa Ayungingtyas Pratiwi Adiwijaya Dicky Muslim Doodle Dandy Waromi Irvan Sophian Nur Khoirullah Zufialdi Zakaria