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A Case Study of Liquefaction Potential Verification During a Strong Earthquake at Lempuing Subdistrict, Bengkulu City, Indonesia
https://orcid.org/http://orcid.org/0000-0002-0470-0149
The Mw 8.6 Bengkulu-Mentawai Earthquake triggered liquefaction in Bengkulu City, Indonesia. One of the impacted areas was the Lempuing Subdistrict. Site investigation and geophysical measurements were conducted to obtain the natural frequency, horizontal-to-vertical spectral ratio (H/V) and shear wave velocity (Vs) profile. Ground motion prediction and spectral matching methods were performed to generate ground motion during the earthquake. Non-linear seismic ground response analysis was conducted to observe soil behaviour during the earthquake. Several results, such as peak ground acceleration, pore pressure and effective stress, settlement, curve of spectral acceleration, and soil behaviour, are discussed. The results showed that the investigated sites are dominated by sandy soils with a shallow groundwater level. The results also showed that liquefaction could occur. Shallow groundwater levels also play an important role in triggering liquefaction during earthquakes. The framework implemented in this study could be adopted to investigate soil liquefaction in other areas.
A Case Study of Liquefaction Potential Verification During a Strong Earthquake at Lempuing Subdistrict, Bengkulu City, Indonesia
https://orcid.org/http://orcid.org/0000-0002-0470-0149
The Mw 8.6 Bengkulu-Mentawai Earthquake triggered liquefaction in Bengkulu City, Indonesia. One of the impacted areas was the Lempuing Subdistrict. Site investigation and geophysical measurements were conducted to obtain the natural frequency, horizontal-to-vertical spectral ratio (H/V) and shear wave velocity (Vs) profile. Ground motion prediction and spectral matching methods were performed to generate ground motion during the earthquake. Non-linear seismic ground response analysis was conducted to observe soil behaviour during the earthquake. Several results, such as peak ground acceleration, pore pressure and effective stress, settlement, curve of spectral acceleration, and soil behaviour, are discussed. The results showed that the investigated sites are dominated by sandy soils with a shallow groundwater level. The results also showed that liquefaction could occur. Shallow groundwater levels also play an important role in triggering liquefaction during earthquakes. The framework implemented in this study could be adopted to investigate soil liquefaction in other areas.
A Case Study of Liquefaction Potential Verification During a Strong Earthquake at Lempuing Subdistrict, Bengkulu City, Indonesia
https://orcid.org/http://orcid.org/0000-0002-0470-0149
The Mw 8.6 Bengkulu-Mentawai Earthquake triggered liquefaction in Bengkulu City, Indonesia. One of the impacted areas was the Lempuing Subdistrict. Site investigation and geophysical measurements were conducted to obtain the natural frequency, horizontal-to-vertical spectral ratio (H/V) and shear wave velocity (Vs) profile. Ground motion prediction and spectral matching methods were performed to generate ground motion during the earthquake. Non-linear seismic ground response analysis was conducted to observe soil behaviour during the earthquake. Several results, such as peak ground acceleration, pore pressure and effective stress, settlement, curve of spectral acceleration, and soil behaviour, are discussed. The results showed that the investigated sites are dominated by sandy soils with a shallow groundwater level. The results also showed that liquefaction could occur. Shallow groundwater levels also play an important role in triggering liquefaction during earthquakes. The framework implemented in this study could be adopted to investigate soil liquefaction in other areas.
A Case Study of Liquefaction Potential Verification During a Strong Earthquake at Lempuing Subdistrict, Bengkulu City, Indonesia
Transp. Infrastruct. Geotech.
Mase, Lindung Zalbuin (author)
Transportation Infrastructure Geotechnology ; 11 ; 1547-1572
2024-08-01
26 pages
Article (Journal)
Electronic Resource
English
Liquefaction Susceptibility Zonation in Lempuing Subdistrict, Bengkulu City, Indonesia
| DOAJ | 2019