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All Journal Potensi : Jurnal Sipil Politeknik
Triandi, Ivan
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Assessment of Liquefaction Potential Based on CPT Data in Tuban Police Headquarters Apartment Building Construction Project Triandi, Ivan; Budhi , Wahyu Satyaning; Surahman , Ganda
Potensi: Jurnal Sipil Politeknik Vol. 28 No. 1 (2026): Potensi: Jurnal Sipil Politeknik
Publisher : Department of Civil Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/potensi.v28i1.6709

Abstract

Liquefaction is a seismic phenomenon where saturated soil loses its shear strength and transforms into a liquid state due to earthquake-induced cyclic loading. While primarily occurring in sandy soils, this study evaluates the liquefaction potential at the Tuban Police Headquarters Apartment project, characterized by clayey deposits in a former paddy field area. Given Tuban's significant seismic activity, a thorough assessment is imperative. This research employs a quantitative approach using the semi-empirical NCEER method developed by Youd and Idriss (2001). The evaluation is based on primary data from the Cone Penetration Test (CPT) at two distinct points, S-1 and S-2. The analysis involves calculating the Cyclic Stress Ratio (CSR) as the seismic demand and the Cyclic Resistance Ratio (CRR) as the soil’s liquefaction resistance. A Safety Factor (FS) is then calculated for each soil layer to determine stability. Results indicate that FS values range from 3.1 to 8.9 at S-1 and from 3.4 to 9.1 at S-2. Since all calculated FS values exceed the critical threshold of 1.0, the site is classified as non-liquefiable and seismically stable for the planned construction.
Co-Authors Budhi , Wahyu Satyaning Surahman , Ganda