Seismic hazard mitigation for Bengkulu Coastal area based on site class analysis

International Conference on Earth Science, Mineral, and Energy

地球科学;矿业工程;能源学

Misliniyati, R.^1,2 ; Mase, L.Z.^1 ; Syahbana, A.J.^2,3 ; Soebowo, E.^3

Civil Engineering UNIB, Bengkulu, Indonesia^1

Civil Engineering ITB, Bandung, Indonesia^2

Research Center for Geotechnology, LIPI Bandung, Indonesia^3

关键词: Disaster mitigation;    Ground surfaces;    Local site condition;    Probability of exceedance;    Sediment layers;    Seismic hazards;    Seismic loadings;    Surface response;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/212/1/012004/pdf
DOI  :  10.1088/1755-1315/212/1/012004

来源: IOP

【 摘 要 】

Bengkulu Coastal Area is a zone with high seismicity that has an acceleration of bedrock in the range 0.7-2.0g for the 2% probability of exceedance in 50 years. This area lies above the quarter sediment layers consisting of fluviatile, alluvium and coastal deposits which are very susceptible to undergo seismic hazards. Understanding about surface response spectra and free surface motion based on local site condition is very required in arranging Spatial Plan (RTRW) of Region. The objective of this study is to observe the response on ground surface of Bengkulu Coastal Area during the seismic loading. The site class analysis based on SNI-1726-2012 classification is performed to achieve this goal. The results obtained are surface response spectra and free surface motion, which are furthermore confirmed by the existing RTRW. In general, the conformity would suggest that disaster mitigation strategy should be actualized by the stakeholders.