Vol 24, No 1 (2020) > Civil Engineering and Architecture >

Liquefaction Potential Analysis Based on Nonlinear Ground Response on the Coastline of Bengkulu City, Indonesia

Lindung Zalbuin Mase 1


  1. Department of Civil Engineering, Faculty of Engineering, Universitas Bengkulu, Bengkulu 38371, Indonesia


Abstract: This paper presents the study of seismic response analysis and liquefaction potential of coastal area of Bengkulu City due to September 12, 2007 Earthquake. This study is conducted by collecting site investigation data (SPT) and applying input motion to observe soil response. The synthetic ground motion is generated by considering important aspects of earthquake, i.e. focal depth, epicenter, earthquake source, and site classification. The synthetized ground motion is then used as the input motion in seismic response analysis. The results of this analysis are spectral acceleration and PGA on each depth. The result of spectral acceleration is also compared with seismic design code of Indonesia (SNI 03-1726-2012). Liquefaction potential analysis is performed considering the results of seismic response analysis. Result shows that spectral acceleration resulted depends on soil type. A higher density means the lower spectral response. In general, the designed spectral acceleration is still reliable to consider the spectral acceleration of each borehole, especially for T (Period) < 1. However, for T > 1 spectral acceleration should be concerned, especially for high-rise building construction. For liquefaction analysis, the shallow depth is relatively vulnerable to undergo liquefaction.
Keywords: wave propagation; earthquake; liquefaction potential, Bengkulu City
Published at: Vol 24, No 1 (2020) pages: 34-42

Access Counter: 126 views, 77 PDF downloads, .

Full PDF Download


Agency of Meteorology, Climatology, and Geophysics (BMKG), Earthquake Data in 2007,

BMKG (in Indonesian), http://www.bmkg.go.id., 2016

P.B. Schnabel, J. Lysmer, H.B. Seed, SHAKE: A Computer Program for Earthquake Response Analysis of Horizontally Layered Sites", Report No. UCBIEERC-72/l2, Earthquake Engineering Research Centre, University of California, Berkeley, California, USA., 1972.

K. Kanai, Relation between the Nature of Surface Layer and the Amplitude of Earthquake Motions, Bulletin Earthquake Research Institute, Tokyo, Japan, 1951.

R.B. Matthiesen, C.M. Duke, D.J. Leeds, J.C. Fraser, Site Characteristics of Southern California Strong-Motion Earthquake Stations, Part Two, Report No. 64-15, Department of Engineering, University of California, Los Angeles, USA., 1964.

J.M. Roesset, R.V. Whitman, Theoretical Background for Amplification Studies," Research Report No. R69-15, Soils Publications No. 231, Massachusetts Institute of Technology, Cambridge, USA., 1969.

J. Lysmer, H.B. Seed, P.B. Schnabel, Bull. Seismol. Soc. Am. 61/6 (2012) 1213.

I.M. Idriss, H.B., Seed, J. Soil Mech. Found. Div. ASCE 94/4 (1968) 1003.

W.D.L, Finn, G.R. Martin, M.K. Lee, (1978), J. Geotech. Eng. ASCE.GTS/1 (1978) 472.

Yoshida N, (1995), DYNEQ a computer program for DYNamic response analysis of level ground by EQuivalent linear method, version 3.25. http://www.civil.tohoku-gakuin.ac.jp/yoshidaj.html.

A. Elgamal, Z. Yang, J. Lu. Cyclic1D: A Computer Program for Seismic Ground Response,” Report No. SSRP-06/05, Department of Structural Engineering, University of California, San Diego, La Jolla, CA, USA. 2006.

Z. Yang, J. Lu, A. Elgamal. J. Adv. Eng. Softw. 35/5 (2004) 249.

H.B. Seed, I.M. Idriss, (1971) J. Soil Mech. Found. Div. ASCE 97/9 (1971) 1249.

P.K. Robertson, C.E. Wride. J. Can. Geotech. 35/3 (1998) 442.

R.D. Andrus, P. Piratheepan, S.B. Ellis, J. Zhang, and C.H. Juang. J. Soil Dyn. Eng. 24/9-10 (2003) 713.

P. Monaco, S. Marchetti, Proceeding of the 4th International Conference on Geotechnical Engineering, Thessaloniki: Greece., 2007.

L.Z. Mase. Teknosia 2/15 (2015) 25 (in Indonesian).

L.Z. Mase (2018). J. Civil Eng. 25/1 53 (in Indonesian).

L.Z. Mase. Int. J. Technol. 9/5 (2018) 910.

SeismoArtif, Program for generating artificial Acceleration, Seismosoft Ltd. 2015) http://www.seismosoft.com.

S. Gafoer, T.C. Amin, R. Pardede. Sheet of Geology Map for Bengkulu Sumatra, Indonesia. Geological Centre of Research and Development, Indonesia., 1992.

R.D. Miller, J. Xia, C.B. Park, J. Ivanov, E. Williams. SEG Technical Program Expanded Abstracts Society of Exploration Geophysicists 1/1 (1999) 433.

T.L. Youd, I.M. Idriss. J. Geotech. Geoenviron. Eng. ASCE 127/4 (2001) 297.

Google Earth. Zonation of Bengkulu City. 2019. https://www.google.com/intl/id/earth/.

SNI 03-1726-2012, Standard of Earthquake Resistance Design for Building, Ministry of Public Works, Jakarta, Indonesia, 2012, p.149 (in Indonesian).

R. Misliniyati, Mawardi, Besperi, M.R. Razali, R. Muktadir. Inersia 5/2 (2014) 1 (in Indonesian).

A. Monalisa, Undergraduate Final Project: Department of Civil Engineering, Faculty of Engineering, Universitas Bengkulu, Bengkulu, Indonesia, 2014.