Journal of the Civil Engineering Forum
Vol. 6 No. 3 (September 2020)

The Implementation of Ground Response Analysis to Quantify Liquefaction Potential Index (LPI) in Bengkulu City, Indonesia

Lindung Zalbuin Mase (Department of Civil Engineering, Faculty of Engineering, University of Bengkulu, INDONESIA)
Muhammad Farid (Department of Geophysics, Faculty of Math and Natural Sciences, University of Bengkulu, INDONESIA)
Nanang Sugianto (Department of Geophysics, Faculty of Math and Natural Sciences, University of Bengkulu, INDONESIA)
Sintia Agustina (Department of Civil Engineering, Faculty of Engineering, University of Bengkulu, INDONESIA)



Article Info

Publish Date
16 Sep 2020

Abstract

Bengkulu City is one of the areas vulnerable to earthquakes in Indonesia and several studies have shown the city experienced a unique phenomenon called liquefaction during the Mw 8.6 Bengkulu-Mentawai Earthquake. This event has initiated a step by step intensive study on earthquake in the area but previous studies are generally limited by the use of site investigation data to empirically analyse liquefaction potential and those that used advance method such as the seismic wave propagation model are rare. This means the level of liquefaction damage in the study area is not totally understood, therefore, this research focused on implementing the ground response analysis to quantify the Liquefaction Potential Index (LPI) using several areas in Bengkulu City in order to determine their vulnerability. The process involved the collection of several site investigation data including boring log and shear wave velocity profile as well as a desk study to determine the geological condition of the observed sites. Moreover, a non-linear seismic ground response analysis was conducted to obtain maximum ground surface acceleration (amax) parameter which was further used to analyse the liquefaction potential in the study area. The results showed several sites have the potential to experience liquefaction during earthquakes. The method applied was considered successful and the results are expected to be implemented for city development. Furthermore, the framework is recommended for adoption in investigating the liquefaction in other areas.

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Journal Info

Abbrev

jcef

Publisher

Subject

Civil Engineering, Building, Construction & Architecture Environmental Science

Description

Journal of the Civil Engineering Forum (JCEF) is a four-monthly journal on Civil Engineering and Environmental related sciences. The journal was established in 1992 as Forum Teknik Sipil, a six-monthly journal published in Bahasa Indonesia, where the first publication was issued as Volume I/1 - ...